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fs2open.github.com/code/graphics/gropengldraw.cpp
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/*
* Copyright (C) Volition, Inc. 1999. All rights reserved.
*
* All source code herein is the property of Volition, Inc. You may not sell
* or otherwise commercially exploit the source or things you created based on the
* source.
*
*/
#include <algorithm>
#include "bmpman/bmpman.h"
#include "cmdline/cmdline.h"
#include "freespace2/freespace.h"
#include "globalincs/pstypes.h"
#include "globalincs/systemvars.h"
#include "graphics/grinternal.h"
#include "graphics/gropengl.h"
#include "graphics/gropenglbmpman.h"
#include "graphics/gropengldraw.h"
#include "graphics/gropenglextension.h"
#include "graphics/gropengllight.h"
#include "graphics/gropenglpostprocessing.h"
#include "graphics/gropenglshader.h"
#include "graphics/gropengltexture.h"
#include "graphics/gropengltnl.h"
#include "graphics/line.h"
#include "lighting/lighting.h"
#include "math/floating.h"
#include "nebula/neb.h"
#include "osapi/osapi.h"
#include "palman/palman.h"
#include "render/3d.h"
GLuint Scene_framebuffer;
GLuint Scene_color_texture;
GLuint Scene_position_texture;
GLuint Scene_normal_texture;
GLuint Scene_specular_texture;
GLuint Scene_luminance_texture;
GLuint Scene_effect_texture;
GLuint Scene_depth_texture;
GLuint Cockpit_depth_texture;
GLuint Scene_stencil_buffer;
GLuint Distortion_framebuffer;
GLuint Distortion_texture[2];
int Distortion_switch = 0;
int Scene_texture_initialized;
bool Scene_framebuffer_in_frame;
bool Deferred_lighting = false;
int Scene_texture_width;
int Scene_texture_height;
GLfloat Scene_texture_u_scale = 1.0f;
GLfloat Scene_texture_v_scale = 1.0f;
GLuint deferred_light_sphere_vbo = 0;
GLuint deferred_light_sphere_ibo = 0;
GLushort deferred_light_sphere_vcount = 0;
GLuint deferred_light_sphere_icount = 0;
GLuint deferred_light_cylinder_vbo = 0;
GLuint deferred_light_cylinder_ibo = 0;
GLushort deferred_light_cylinder_vcount = 0;
GLuint deferred_light_cylinder_icount = 0;
struct opengl_vertex_bind {
vertex_format_data::vertex_format format;
enum type {
POSITION,
COLOR,
TEXCOORD0,
TEXCOORD1,
NORMAL,
ATTRIB
};
opengl_vertex_bind::type binding_type;
GLint size;
GLenum data_type;
// used only by vertex attributes
SCP_string attrib_name;
GLboolean normalized;
};
static opengl_vertex_bind GL_array_binding_data[] =
{
{ vertex_format_data::POSITION4, opengl_vertex_bind::POSITION, 4, GL_FLOAT, "", GL_FALSE },
{ vertex_format_data::POSITION3, opengl_vertex_bind::POSITION, 3, GL_FLOAT, "", GL_FALSE },
{ vertex_format_data::POSITION2, opengl_vertex_bind::POSITION, 2, GL_FLOAT, "", GL_FALSE },
{ vertex_format_data::SCREEN_POS, opengl_vertex_bind::POSITION, 2, GL_INT, "", GL_FALSE },
{ vertex_format_data::COLOR3, opengl_vertex_bind::COLOR, 3, GL_UNSIGNED_BYTE, "", GL_FALSE },
{ vertex_format_data::COLOR4, opengl_vertex_bind::COLOR, 4, GL_UNSIGNED_BYTE, "", GL_FALSE },
{ vertex_format_data::TEX_COORD, opengl_vertex_bind::TEXCOORD0, 2, GL_FLOAT, "", GL_FALSE },
{ vertex_format_data::NORMAL, opengl_vertex_bind::NORMAL, 3, GL_FLOAT, "", GL_FALSE },
{ vertex_format_data::TANGENT, opengl_vertex_bind::TEXCOORD1, 4, GL_FLOAT, "", GL_FALSE },
{ vertex_format_data::MODEL_ID, opengl_vertex_bind::ATTRIB, 1, GL_FLOAT, "model_id", GL_FALSE },
{ vertex_format_data::RADIUS, opengl_vertex_bind::ATTRIB, 1, GL_FLOAT, "radius", GL_FALSE },
{ vertex_format_data::FVEC, opengl_vertex_bind::ATTRIB, 3, GL_FLOAT, "fvec", GL_FALSE },
{ vertex_format_data::UVEC, opengl_vertex_bind::ATTRIB, 3, GL_FLOAT, "uvec", GL_FALSE },
{ vertex_format_data::INTENSITY, opengl_vertex_bind::ATTRIB, 1, GL_FLOAT, "intensity", GL_FALSE }
};
void opengl_bind_vertex_component(vertex_format_data &vert_component)
{
opengl_vertex_bind &bind_info = GL_array_binding_data[vert_component.format_type];
switch ( bind_info.binding_type ) {
case opengl_vertex_bind::POSITION:
{
GL_state.Array.EnableClientVertex();
GL_state.Array.VertexPointer(bind_info.size, bind_info.data_type, vert_component.stride, vert_component.data_src);
break;
}
case opengl_vertex_bind::TEXCOORD0:
{
GL_state.Array.SetActiveClientUnit(0);
GL_state.Array.EnableClientTexture();
GL_state.Array.TexPointer(bind_info.size, bind_info.data_type, vert_component.stride, vert_component.data_src);
break;
}
case opengl_vertex_bind::TEXCOORD1:
{
GL_state.Array.SetActiveClientUnit(1);
GL_state.Array.EnableClientTexture();
GL_state.Array.TexPointer(bind_info.size, bind_info.data_type, vert_component.stride, vert_component.data_src);
break;
}
case opengl_vertex_bind::COLOR:
{
GL_state.Array.EnableClientColor();
GL_state.Array.ColorPointer(bind_info.size, bind_info.data_type, vert_component.stride, vert_component.data_src);
GL_state.InvalidateColor();
break;
}
case opengl_vertex_bind::NORMAL:
{
GL_state.Array.EnableClientNormal();
GL_state.Array.NormalPointer(bind_info.data_type, vert_component.stride, vert_component.data_src);
break;
}
case opengl_vertex_bind::ATTRIB:
{
// grabbing a vertex attribute is dependent on what current shader has been set. i hope no one calls opengl_bind_vertex_layout before opengl_set_current_shader
GLint index = opengl_shader_get_attribute(bind_info.attrib_name.c_str());
if ( index >= 0 ) {
GL_state.Array.EnableVertexAttrib(index);
GL_state.Array.VertexAttribPointer(index, bind_info.size, bind_info.data_type, bind_info.normalized, vert_component.stride, vert_component.data_src);
}
break;
}
}
}
void opengl_bind_vertex_layout(vertex_layout &layout)
{
GL_state.Array.BindPointersBegin();
uint num_vertex_bindings = layout.get_num_vertex_components();
for ( uint i = 0; i < num_vertex_bindings; ++i ) {
opengl_bind_vertex_component(*layout.get_vertex_component(i));
}
GL_state.Array.BindPointersEnd();
}
void gr_opengl_pixel(int x, int y, int resize_mode)
{
gr_line(x, y, x, y, resize_mode);
}
void opengl_aabitmap_ex_internal(int x, int y, int w, int h, int sx, int sy, int resize_mode, bool mirror)
{
if ( (w < 1) || (h < 1) ) {
return;
}
if ( !gr_screen.current_color.is_alphacolor ) {
return;
}
float u_scale, v_scale;
GL_CHECK_FOR_ERRORS("start of aabitmap_ex_internal()");
GL_state.SetTextureSource(TEXTURE_SOURCE_NO_FILTERING);
GL_state.SetAlphaBlendMode(ALPHA_BLEND_ALPHA_BLEND_ALPHA);
GL_state.SetZbufferType(ZBUFFER_TYPE_NONE);
if ( !gr_opengl_tcache_set(gr_screen.current_bitmap, TCACHE_TYPE_AABITMAP, &u_scale, &v_scale) ) {
mprintf(("WARNING: Error setting aabitmap texture (%i)!\n", gr_screen.current_bitmap));
return;
}
float u0, u1, v0, v1;
float x1, x2, y1, y2;
int bw, bh, do_resize;
if ( resize_mode != GR_RESIZE_NONE && (gr_screen.custom_size || (gr_screen.rendering_to_texture != -1)) ) {
do_resize = 1;
} else {
do_resize = 0;
}
bm_get_info(gr_screen.current_bitmap, &bw, &bh);
u0 = u_scale * (i2fl(sx) / i2fl(bw));
v0 = v_scale * (i2fl(sy) / i2fl(bh));
u1 = u_scale * (i2fl(sx+w) / i2fl(bw));
v1 = v_scale * (i2fl(sy+h) / i2fl(bh));
x1 = i2fl(x + ((do_resize) ? gr_screen.offset_x_unscaled : gr_screen.offset_x));
y1 = i2fl(y + ((do_resize) ? gr_screen.offset_y_unscaled : gr_screen.offset_y));
x2 = x1 + i2fl(w);
y2 = y1 + i2fl(h);
if (do_resize) {
gr_resize_screen_posf(&x1, &y1, NULL, NULL, resize_mode);
gr_resize_screen_posf(&x2, &y2, NULL, NULL, resize_mode);
}
GL_state.Color(gr_screen.current_color.red, gr_screen.current_color.green, gr_screen.current_color.blue, gr_screen.current_color.alpha);
if (mirror) {
float temp = u0;
u0 = u1;
u1 = temp;
}
GLboolean cull_face = GL_state.CullFace(GL_FALSE);
opengl_draw_textured_quad(x1,y1,u0,v0, x2,y2,u1,v1);
GL_state.CullFace(cull_face);
GL_CHECK_FOR_ERRORS("end of aabitmap_ex_internal()");
}
void gr_opengl_aabitmap_ex(int x, int y, int w, int h, int sx, int sy, int resize_mode, bool mirror)
{
int reclip;
#ifndef NDEBUG
int count = 0;
#endif
int dx1 = x;
int dx2 = x + w - 1;
int dy1 = y;
int dy2 = y + h - 1;
int bw, bh, do_resize;
bm_get_info(gr_screen.current_bitmap, &bw, &bh);
if ( resize_mode != GR_RESIZE_NONE && (gr_screen.custom_size || (gr_screen.rendering_to_texture != -1)) ) {
do_resize = 1;
} else {
do_resize = 0;
}
int clip_left = ((do_resize) ? gr_screen.clip_left_unscaled : gr_screen.clip_left);
int clip_right = ((do_resize) ? gr_screen.clip_right_unscaled : gr_screen.clip_right);
int clip_top = ((do_resize) ? gr_screen.clip_top_unscaled : gr_screen.clip_top);
int clip_bottom = ((do_resize) ? gr_screen.clip_bottom_unscaled : gr_screen.clip_bottom);
do {
reclip = 0;
#ifndef NDEBUG
if (count > 1) {
Int3();
}
count++;
#endif
if ( (dx1 > clip_right) || (dx2 < clip_left) ) {
return;
}
if ( (dy1 > clip_bottom) || (dy2 < clip_top) ) {
return;
}
if (dx1 < clip_left) {
sx += clip_left - dx1;
dx1 = clip_left;
}
if (dy1 < clip_top) {
sy += clip_top - dy1;
dy1 = clip_top;
}
if (dx2 > clip_right) {
dx2 = clip_right;
}
if (dy2 > clip_bottom) {
dy2 = clip_bottom;
}
if ( sx < 0 ) {
dx1 -= sx;
sx = 0;
reclip = 1;
}
if ( sy < 0 ) {
dy1 -= sy;
sy = 0;
reclip = 1;
}
w = dx2 - dx1 + 1;
h = dy2 - dy1 + 1;
if ( sx + w > bw ) {
w = bw - sx;
dx2 = dx1 + w - 1;
}
if ( sy + h > bh ) {
h = bh - sy;
dy2 = dy1 + h - 1;
}
if ( (w < 1) || (h < 1) ) {
// clipped away!
return;
}
} while (reclip);
// Make sure clipping algorithm works
#ifndef NDEBUG
Assert( w > 0 );
Assert( h > 0 );
Assert( w == (dx2-dx1+1) );
Assert( h == (dy2-dy1+1) );
Assert( sx >= 0 );
Assert( sy >= 0 );
Assert( sx+w <= bw );
Assert( sy+h <= bh );
Assert( dx2 >= dx1 );
Assert( dy2 >= dy1 );
Assert( (dx1 >= clip_left) && (dx1 <= clip_right) );
Assert( (dx2 >= clip_left) && (dx2 <= clip_right) );
Assert( (dy1 >= clip_top) && (dy1 <= clip_bottom) );
Assert( (dy2 >= clip_top) && (dy2 <= clip_bottom) );
#endif
// We now have dx1,dy1 and dx2,dy2 and sx, sy all set validly within clip regions.
opengl_aabitmap_ex_internal(dx1, dy1, (dx2 - dx1 + 1), (dy2 - dy1 + 1), sx, sy, resize_mode, mirror);
}
void gr_opengl_aabitmap(int x, int y, int resize_mode, bool mirror)
{
int w, h, do_resize;
bm_get_info(gr_screen.current_bitmap, &w, &h);
if ( resize_mode != GR_RESIZE_NONE && (gr_screen.custom_size || (gr_screen.rendering_to_texture != -1)) ) {
do_resize = 1;
} else {
do_resize = 0;
}
int dx1 = x;
int dx2 = x + w - 1;
int dy1 = y;
int dy2 = y + h - 1;
int sx = 0, sy = 0;
int clip_left = ((do_resize) ? gr_screen.clip_left_unscaled : gr_screen.clip_left);
int clip_right = ((do_resize) ? gr_screen.clip_right_unscaled : gr_screen.clip_right);
int clip_top = ((do_resize) ? gr_screen.clip_top_unscaled : gr_screen.clip_top);
int clip_bottom = ((do_resize) ? gr_screen.clip_bottom_unscaled : gr_screen.clip_bottom);
if ( (dx1 > clip_right) || (dx2 < clip_left) ) {
return;
}
if ( (dy1 > clip_bottom) || (dy2 < clip_top) ) {
return;
}
if (dx1 < clip_left) {
sx = clip_left - dx1;
dx1 = clip_left;
}
if (dy1 < clip_top) {
sy = clip_top - dy1;
dy1 = clip_top;
}
if (dx2 > clip_right) {
dx2 = clip_right;
}
if (dy2 > clip_bottom) {
dy2 = clip_bottom;
}
if ( (sx < 0) || (sy < 0) ) {
return;
}
if ( (sx >= w) || (sy >= h) ) {
return;
}
// Draw bitmap bm[sx,sy] into (dx1,dy1)-(dx2,dy2)
opengl_aabitmap_ex_internal(dx1, dy1, (dx2 - dx1 + 1), (dy2 - dy1 + 1), sx, sy, resize_mode, mirror);
}
#define MAX_VERTS_PER_DRAW 120
struct v4 { GLfloat x,y,u,v; };
static v4 GL_string_render_buff[MAX_VERTS_PER_DRAW];
void gr_opengl_string(float sx, float sy, const char *s, int resize_mode)
{
int width, spacing, letter;
float x, y;
bool do_resize;
float bw, bh;
float u0, u1, v0, v1;
float x1, x2, y1, y2;
float u_scale, v_scale;
if ( !Current_font || (*s == 0) ) {
return;
}
GL_CHECK_FOR_ERRORS("start of string()");
gr_set_bitmap(Current_font->bitmap_id);
GL_state.SetTextureSource(TEXTURE_SOURCE_NO_FILTERING);
GL_state.SetAlphaBlendMode(ALPHA_BLEND_ALPHA_BLEND_ALPHA);
GL_state.SetZbufferType(ZBUFFER_TYPE_NONE);
if ( !gr_opengl_tcache_set(gr_screen.current_bitmap, TCACHE_TYPE_AABITMAP, &u_scale, &v_scale) ) {
return;
}
int buffer_offset = 0;
int ibw, ibh;
bm_get_info(gr_screen.current_bitmap, &ibw, &ibh);
bw = i2fl(ibw);
bh = i2fl(ibh);
// set color!
if (gr_screen.current_color.is_alphacolor) {
GL_state.Color(gr_screen.current_color.red, gr_screen.current_color.green, gr_screen.current_color.blue, gr_screen.current_color.alpha);
} else {
GL_state.Color(gr_screen.current_color.red, gr_screen.current_color.green, gr_screen.current_color.blue);
}
// if ( (gr_screen.custom_size && resize) || (gr_screen.rendering_to_texture != -1) ) {
if ( resize_mode != GR_RESIZE_NONE && (gr_screen.custom_size || (gr_screen.rendering_to_texture != -1)) ) {
do_resize = true;
} else {
do_resize = false;
}
int clip_left = ((do_resize) ? gr_screen.clip_left_unscaled : gr_screen.clip_left);
int clip_right = ((do_resize) ? gr_screen.clip_right_unscaled : gr_screen.clip_right);
int clip_top = ((do_resize) ? gr_screen.clip_top_unscaled : gr_screen.clip_top);
int clip_bottom = ((do_resize) ? gr_screen.clip_bottom_unscaled : gr_screen.clip_bottom);
x = sx;
y = sy;
if (sx == (float)0x8000) {
// centered
x = (float)get_centered_x(s, !do_resize);
} else {
x = sx;
}
spacing = 0;
GLboolean cull_face = GL_state.CullFace(GL_FALSE);
GL_state.Array.BindArrayBuffer(0);
vertex_layout vert_def;
vert_def.add_vertex_component(vertex_format_data::POSITION2, sizeof(v4), &GL_string_render_buff[0].x);
vert_def.add_vertex_component(vertex_format_data::TEX_COORD, sizeof(v4), &GL_string_render_buff[0].u);
opengl_bind_vertex_layout(vert_def);
// pick out letter coords, draw it, goto next letter and do the same
while (*s) {
x += spacing;
while (*s == '\n') {
s++;
y += Current_font->h;
if (sx == (float)0x8000) {
// centered
x = (float)get_centered_x(s, !do_resize);
} else {
x = sx;
}
}
if (*s == 0) {
break;
}
letter = get_char_width(s[0], s[1], &width, &spacing);
s++;
// not in font, draw as space
if (letter < 0) {
continue;
}
float xd, yd, xc, yc;
float wc, hc;
// Check if this character is totally clipped
if ( (x + width) < clip_left ) {
continue;
}
if ( (y + Current_font->h) < clip_top ) {
continue;
}
if (x > clip_right) {
continue;
}
if (y > clip_bottom) {
continue;
}
xd = yd = 0;
if (x < clip_left) {
xd = clip_left - x;
}
if (y < clip_top) {
yd = clip_top - y;
}
xc = x + xd;
yc = y + yd;
wc = width - xd;
hc = Current_font->h - yd;
if ( (xc + wc) > clip_right ) {
wc = clip_right - xc;
}
if ( (yc + hc) > clip_bottom ) {
hc = clip_bottom - yc;
}
if ( (wc < 1) || (hc < 1) ) {
continue;
}
int u = Current_font->bm_u[letter];
int v = Current_font->bm_v[letter];
x1 = xc + ((do_resize) ? gr_screen.offset_x_unscaled : gr_screen.offset_x);
y1 = yc + ((do_resize) ? gr_screen.offset_y_unscaled : gr_screen.offset_y);
x2 = x1 + wc;
y2 = y1 + hc;
if (do_resize) {
gr_resize_screen_posf( &x1, &y1, NULL, NULL, resize_mode );
gr_resize_screen_posf( &x2, &y2, NULL, NULL, resize_mode );
}
u0 = u_scale * (i2fl(u+xd) / bw);
v0 = v_scale * (i2fl(v+yd) / bh);
u1 = u_scale * (i2fl((u+xd)+wc) / bw);
v1 = v_scale * (i2fl((v+yd)+hc) / bh);
if ( buffer_offset == MAX_VERTS_PER_DRAW ) {
glDrawArrays(GL_TRIANGLES, 0, buffer_offset);
buffer_offset = 0;
}
GL_string_render_buff[buffer_offset].x = (GLfloat)x1;
GL_string_render_buff[buffer_offset].y = (GLfloat)y1;
GL_string_render_buff[buffer_offset].u = u0;
GL_string_render_buff[buffer_offset].v = v0;
buffer_offset++;
GL_string_render_buff[buffer_offset].x = (GLfloat)x1;
GL_string_render_buff[buffer_offset].y = (GLfloat)y2;
GL_string_render_buff[buffer_offset].u = u0;
GL_string_render_buff[buffer_offset].v = v1;
buffer_offset++;
GL_string_render_buff[buffer_offset].x = (GLfloat)x2;
GL_string_render_buff[buffer_offset].y = (GLfloat)y1;
GL_string_render_buff[buffer_offset].u = u1;
GL_string_render_buff[buffer_offset].v = v0;
buffer_offset++;
GL_string_render_buff[buffer_offset].x = (GLfloat)x1;
GL_string_render_buff[buffer_offset].y = (GLfloat)y2;
GL_string_render_buff[buffer_offset].u = u0;
GL_string_render_buff[buffer_offset].v = v1;
buffer_offset++;
GL_string_render_buff[buffer_offset].x = (GLfloat)x2;
GL_string_render_buff[buffer_offset].y = (GLfloat)y1;
GL_string_render_buff[buffer_offset].u = u1;
GL_string_render_buff[buffer_offset].v = v0;
buffer_offset++;
GL_string_render_buff[buffer_offset].x = (GLfloat)x2;
GL_string_render_buff[buffer_offset].y = (GLfloat)y2;
GL_string_render_buff[buffer_offset].u = u1;
GL_string_render_buff[buffer_offset].v = v1;
buffer_offset++;
}
if ( buffer_offset ) {
glDrawArrays(GL_TRIANGLES, 0, buffer_offset);
}
GL_state.CullFace(cull_face);
GL_CHECK_FOR_ERRORS("end of string()");
}
void gr_opengl_string(int sx, int sy, const char *s, int resize_mode)
{
gr_opengl_string(i2fl(sx), i2fl(sy), s, resize_mode);
}
void gr_opengl_line(int x1,int y1,int x2,int y2, int resize_mode)
{
int do_resize;
float sx1, sy1;
float sx2, sy2;
if ( resize_mode != GR_RESIZE_NONE && (gr_screen.custom_size || (gr_screen.rendering_to_texture != -1)) ) {
do_resize = 1;
} else {
do_resize = 0;
}
int clip_left = ((do_resize) ? gr_screen.clip_left_unscaled : gr_screen.clip_left);
int clip_right = ((do_resize) ? gr_screen.clip_right_unscaled : gr_screen.clip_right);
int clip_top = ((do_resize) ? gr_screen.clip_top_unscaled : gr_screen.clip_top);
int clip_bottom = ((do_resize) ? gr_screen.clip_bottom_unscaled : gr_screen.clip_bottom);
int offset_x = ((do_resize) ? gr_screen.offset_x_unscaled : gr_screen.offset_x);
int offset_y = ((do_resize) ? gr_screen.offset_y_unscaled : gr_screen.offset_y);
INT_CLIPLINE(x1, y1, x2, y2, clip_left, clip_top, clip_right, clip_bottom, return, ;, ;);
sx1 = i2fl(x1 + offset_x);
sy1 = i2fl(y1 + offset_y);
sx2 = i2fl(x2 + offset_x);
sy2 = i2fl(y2 + offset_y);
if (do_resize) {
gr_resize_screen_posf(&sx1, &sy1, NULL, NULL, resize_mode);
gr_resize_screen_posf(&sx2, &sy2, NULL, NULL, resize_mode);
}
GL_state.SetTextureSource(TEXTURE_SOURCE_NONE);
GL_state.SetAlphaBlendMode(ALPHA_BLEND_ALPHA_BLEND_ALPHA);
GL_state.SetZbufferType(ZBUFFER_TYPE_NONE);
if ( (x1 == x2) && (y1 == y2) ) {
gr_opengl_set_2d_matrix();
GLfloat vert[3]= {sx1, sy1, -0.99f};
GL_state.Color(gr_screen.current_color.red, gr_screen.current_color.green, gr_screen.current_color.blue, gr_screen.current_color.alpha);
vertex_layout vert_def;
vert_def.add_vertex_component(vertex_format_data::POSITION3, 0, vert);
opengl_bind_vertex_layout(vert_def);
glDrawArrays(GL_POINTS, 0, 1);
GL_CHECK_FOR_ERRORS("end of opengl_line()");
gr_opengl_end_2d_matrix();
return;
}
if (x1 == x2) {
if (sy1 < sy2) {
sy2 += 0.5f;
} else {
sy1 += 0.5f;
}
} else if (y1 == y2) {
if (sx1 < sx2) {
sx2 += 0.5f;
} else {
sx1 += 0.5f;
}
}
gr_opengl_set_2d_matrix();
GLfloat line[6] = {
sx2, sy2, -0.99f,
sx1, sy1, -0.99f
};
GL_state.Color(gr_screen.current_color.red, gr_screen.current_color.green, gr_screen.current_color.blue, gr_screen.current_color.alpha);
vertex_layout vert_def;
vert_def.add_vertex_component(vertex_format_data::POSITION3, 0, line);
opengl_bind_vertex_layout(vert_def);
glDrawArrays(GL_LINES, 0, 2);
GL_CHECK_FOR_ERRORS("end of opengl_line()");
gr_opengl_end_2d_matrix();
}
void gr_opengl_line_htl(vec3d *start, vec3d *end)
{
if (Cmdline_nohtl) {
return;
}
gr_zbuffer_type zbuffer_state = (gr_zbuffering) ? ZBUFFER_TYPE_FULL : ZBUFFER_TYPE_NONE;
GL_state.SetTextureSource(TEXTURE_SOURCE_NONE);
GL_state.SetZbufferType(zbuffer_state);
if (gr_screen.current_color.is_alphacolor) {
GL_state.SetAlphaBlendMode(ALPHA_BLEND_ALPHA_BLEND_ALPHA);
GL_state.Color( gr_screen.current_color.red, gr_screen.current_color.green, gr_screen.current_color.blue, gr_screen.current_color.alpha );
} else {
GL_state.SetAlphaBlendMode(ALPHA_BLEND_NONE);
GL_state.Color( gr_screen.current_color.red, gr_screen.current_color.green, gr_screen.current_color.blue );
}
GLfloat line[6] = {
start->xyz.x, start->xyz.y, start->xyz.z,
end->xyz.x, end->xyz.y, end->xyz.z
};
GL_state.Array.BindArrayBuffer(0);
opengl_shader_set_current();
vertex_layout vert_def;
vert_def.add_vertex_component(vertex_format_data::POSITION3, 0, line);
opengl_bind_vertex_layout(vert_def);
glDrawArrays(GL_LINES, 0, 2);
GL_CHECK_FOR_ERRORS("end of opengl_line_htl()");
}
void gr_opengl_aaline(vertex *v1, vertex *v2)
{
// -- AA OpenGL lines. Looks good but they are kinda slow so this is disabled until an option is implemented - taylor
// gr_opengl_set_state( TEXTURE_SOURCE_NONE, ALPHA_BLEND_ALPHA_BLEND_ALPHA, ZBUFFER_TYPE_NONE );
// glEnable( GL_LINE_SMOOTH );
// glHint( GL_LINE_SMOOTH_HINT, GL_FASTEST );
// glLineWidth( 1.0 );
float x1 = v1->screen.xyw.x;
float y1 = v1->screen.xyw.y;
float x2 = v2->screen.xyw.x;
float y2 = v2->screen.xyw.y;
float sx1, sy1;
float sx2, sy2;
FL_CLIPLINE(x1, y1, x2, y2, (float)gr_screen.clip_left, (float)gr_screen.clip_top, (float)gr_screen.clip_right, (float)gr_screen.clip_bottom, return, ;, ;);
sx1 = x1 + (float)gr_screen.offset_x;
sy1 = y1 + (float)gr_screen.offset_y;
sx2 = x2 + (float)gr_screen.offset_x;
sy2 = y2 + (float)gr_screen.offset_y;
GL_state.SetTextureSource(TEXTURE_SOURCE_NONE);
GL_state.SetAlphaBlendMode(ALPHA_BLEND_ALPHA_BLEND_ALPHA);
GL_state.SetZbufferType(ZBUFFER_TYPE_NONE);
if ( (x1 == x2) && (y1 == y2) ) {
gr_opengl_set_2d_matrix();
GL_state.Color(gr_screen.current_color.red, gr_screen.current_color.green, gr_screen.current_color.blue, gr_screen.current_color.alpha);
GLfloat vert[3]= {sx1, sy1, -0.99f};
vertex_layout vert_def;
vert_def.add_vertex_component(vertex_format_data::POSITION3, 0, vert);
opengl_bind_vertex_layout(vert_def);
glDrawArrays(GL_POINTS, 0, 1);
GL_CHECK_FOR_ERRORS("end of opengl_aaline()");
gr_opengl_end_2d_matrix();
return;
}
if (x1 == x2) {
if (sy1 < sy2) {
sy2 += 0.5f;
} else {
sy1 += 0.5f;
}
} else if (y1 == y2) {
if (sx1 < sx2) {
sx2 += 0.5f;
} else {
sx1 += 0.5f;
}
}
gr_opengl_set_2d_matrix();
GL_state.Color(gr_screen.current_color.red, gr_screen.current_color.green, gr_screen.current_color.blue, gr_screen.current_color.alpha);
GLfloat line[6] = {
sx2, sy2, -0.99f,
sx1, sy1, -0.99f
};
vertex_layout vert_def;
vert_def.add_vertex_component(vertex_format_data::POSITION3, 0, line);
opengl_bind_vertex_layout(vert_def);
glDrawArrays(GL_LINES, 0, 2);
GL_CHECK_FOR_ERRORS("end of opengl_aaline()");
gr_opengl_end_2d_matrix();
// glDisable( GL_LINE_SMOOTH );
}
void gr_opengl_gradient(int x1, int y1, int x2, int y2, int resize_mode)
{
int swapped = 0;
if ( !gr_screen.current_color.is_alphacolor ) {
gr_opengl_line(x1, y1, x2, y2, resize_mode);
return;
}
if ( resize_mode != GR_RESIZE_NONE && (gr_screen.custom_size || (gr_screen.rendering_to_texture != -1)) ) {
gr_resize_screen_pos(&x1, &y1, NULL, NULL, resize_mode);
gr_resize_screen_pos(&x2, &y2, NULL, NULL, resize_mode);
}
INT_CLIPLINE(x1, y1, x2, y2, gr_screen.clip_left, gr_screen.clip_top, gr_screen.clip_right, gr_screen.clip_bottom, return, ;, swapped = 1);
GL_state.SetTextureSource(TEXTURE_SOURCE_NONE);
GL_state.SetAlphaBlendMode(ALPHA_BLEND_ALPHA_BLEND_ALPHA);
GL_state.SetZbufferType(ZBUFFER_TYPE_NONE);
ubyte aa = swapped ? 0 : gr_screen.current_color.alpha;
ubyte ba = swapped ? gr_screen.current_color.alpha : 0;
float sx1, sy1, sx2, sy2;
sx1 = i2fl(x1 + gr_screen.offset_x);
sy1 = i2fl(y1 + gr_screen.offset_y);
sx2 = i2fl(x2 + gr_screen.offset_x);
sy2 = i2fl(y2 + gr_screen.offset_y);
if (x1 == x2) {
if (sy1 < sy2) {
sy2 += 0.5f;
} else {
sy1 += 0.5f;
}
} else if (y1 == y2) {
if (sx1 < sx2) {
sx2 += 0.5f;
} else {
sx1 += 0.5f;
}
}
GLubyte colour[8] = {
gr_screen.current_color.red, gr_screen.current_color.green, gr_screen.current_color.blue, ba,
gr_screen.current_color.red, gr_screen.current_color.green, gr_screen.current_color.blue, aa
};
GLfloat verts[4] = {
sx2, sy2,
sx1, sy1
};
vertex_layout vert_def;
vert_def.add_vertex_component(vertex_format_data::POSITION2, 0, verts);
vert_def.add_vertex_component(vertex_format_data::COLOR4, 0, colour);
opengl_bind_vertex_layout(vert_def);
glDrawArrays(GL_LINES, 0, 2);
}
void gr_opengl_circle(int xc, int yc, int d, int resize_mode)
{
gr_opengl_arc(xc, yc, d / 2.0f, 0.0f, 360.0f, true, resize_mode);
}
void gr_opengl_unfilled_circle(int xc, int yc, int d, int resize_mode)
{
int r = d / 2;
int segments = 4 + (int)(r); // seems like a good approximation
float theta = 2 * PI / float(segments - 1);
float c = cosf(theta);
float s = sinf(theta);
float t;
float x1 = 1.0f;
float y1 = 0.0f;
float x2 = x1;
float y2 = y1;
float linewidth;
glGetFloatv(GL_LINE_WIDTH, &linewidth);
float halflinewidth = linewidth / 2.0f;
float inner_rad = r - halflinewidth;
float outer_rad = r + halflinewidth;
int do_resize = 0;
if ( resize_mode != GR_RESIZE_NONE && (gr_screen.custom_size || (gr_screen.rendering_to_texture != -1)) ) {
gr_resize_screen_pos(&xc, &yc, NULL, NULL, resize_mode);
do_resize = 1;
}
// Big clip
if ( (xc+outer_rad) < gr_screen.clip_left ) {
return;
}
if ( (xc-outer_rad) > gr_screen.clip_right ) {
return;
}
if ( (yc+outer_rad) < gr_screen.clip_top ) {
return;
}
if ( (yc-outer_rad) > gr_screen.clip_bottom ) {
return;
}
int offset_x = ((do_resize) ? gr_screen.offset_x_unscaled : gr_screen.offset_x);
int offset_y = ((do_resize) ? gr_screen.offset_y_unscaled : gr_screen.offset_y);
GL_state.SetTextureSource(TEXTURE_SOURCE_NONE);
GL_state.SetAlphaBlendMode(ALPHA_BLEND_ALPHA_BLEND_ALPHA);
GL_state.SetZbufferType(ZBUFFER_TYPE_NONE);
GLfloat *circle = new GLfloat[segments * 4];
for (int i=0; i < segments * 4; i+=4) {
circle[i] = i2fl(xc + (x2 * outer_rad) + offset_x);
circle[i+1] = i2fl(yc + (y2 * outer_rad) + offset_y);
circle[i+2] = i2fl(xc + (x2 * inner_rad) + offset_x);
circle[i+3] = i2fl(yc + (y2 * inner_rad) + offset_y);
t = x2;
x2 = c * x1 - s * y1;
y2 = s * t + c * y1;
x1 = x2;
y1 = y2;
}
gr_opengl_set_2d_matrix();
GL_state.Color(gr_screen.current_color.red, gr_screen.current_color.green, gr_screen.current_color.blue, gr_screen.current_color.alpha);
vertex_layout vert_def;
vert_def.add_vertex_component(vertex_format_data::POSITION2, 0, circle);
opengl_bind_vertex_layout(vert_def);
glDrawArrays(GL_QUAD_STRIP, 0, segments * 2);
GL_CHECK_FOR_ERRORS("end of opengl_unfilled_circle()");
gr_opengl_end_2d_matrix();
delete [] circle;
}
void gr_opengl_arc(int xc, int yc, float r, float angle_start, float angle_end, bool fill, int resize_mode)
{
// Ensure that angle_start < angle_end
if (angle_end < angle_start) {
float temp = angle_start;
angle_start = angle_end;
angle_end = temp;
}
float arc_length_ratio;
arc_length_ratio = MIN(angle_end - angle_start, 360.0f) / 360.0f;
int segments = 4 + (int)(r * arc_length_ratio); // seems like a good approximation
float theta = 2 * PI / float(segments - 1) * arc_length_ratio;
float c = cosf(theta);
float s = sinf(theta);
float t;
float x1 = cosf(ANG_TO_RAD(angle_start));
float y1 = sinf(ANG_TO_RAD(angle_start));
float x2 = x1;
float y2 = y1;
float halflinewidth = 0.0f;
float inner_rad = 0.0f; // only used if fill==false
float outer_rad = r;
if (!fill) {
float linewidth;
glGetFloatv(GL_LINE_WIDTH, &linewidth);
halflinewidth = linewidth / 2.0f;
inner_rad = r - halflinewidth;
outer_rad = r + halflinewidth;
}
int do_resize = 0;
if ( resize_mode != GR_RESIZE_NONE && (gr_screen.custom_size || (gr_screen.rendering_to_texture != -1)) ) {
gr_resize_screen_pos(&xc, &yc, NULL, NULL, resize_mode);
do_resize = 1;
}
// Big clip
if ( (xc+outer_rad) < gr_screen.clip_left ) {
return;
}
if ( (xc-outer_rad) > gr_screen.clip_right ) {
return;
}
if ( (yc+outer_rad) < gr_screen.clip_top ) {
return;
}
if ( (yc-outer_rad) > gr_screen.clip_bottom ) {
return;
}
int offset_x = ((do_resize) ? gr_screen.offset_x_unscaled : gr_screen.offset_x);
int offset_y = ((do_resize) ? gr_screen.offset_y_unscaled : gr_screen.offset_y);
GL_state.SetTextureSource(TEXTURE_SOURCE_NONE);
GL_state.SetAlphaBlendMode(ALPHA_BLEND_ALPHA_BLEND_ALPHA);
GL_state.SetZbufferType(ZBUFFER_TYPE_NONE);
GLfloat *arc;
gr_opengl_set_2d_matrix();
GL_state.Color(gr_screen.current_color.red, gr_screen.current_color.green, gr_screen.current_color.blue, gr_screen.current_color.alpha);
if (fill) {
arc = new GLfloat[segments * 2 + 2];
arc[0] = i2fl(xc);
arc[1] = i2fl(yc);
for (int i=2; i < segments * 2 + 2; i+=2) {
arc[i] = i2fl(xc + (x2 * outer_rad) + offset_x);
arc[i+1] = i2fl(yc + (y2 * outer_rad) + offset_y);
t = x2;
x2 = c * x1 - s * y1;
y2 = s * t + c * y1;
x1 = x2;
y1 = y2;
}
vertex_layout vert_def;
vert_def.add_vertex_component(vertex_format_data::POSITION2, 0, arc);
opengl_bind_vertex_layout(vert_def);
glDrawArrays(GL_TRIANGLE_FAN, 0, segments + 1);
} else {
arc = new GLfloat[segments * 4];
for (int i=0; i < segments * 4; i+=4) {
arc[i] = i2fl(xc + (x2 * outer_rad) + offset_x);
arc[i+1] = i2fl(yc + (y2 * outer_rad) + offset_y);
arc[i+2] = i2fl(xc + (x2 * inner_rad) + offset_x);
arc[i+3] = i2fl(yc + (y2 * inner_rad) + offset_y);
t = x2;
x2 = c * x1 - s * y1;
y2 = s * t + c * y1;
x1 = x2;
y1 = y2;
}
vertex_layout vert_def;
vert_def.add_vertex_component(vertex_format_data::POSITION2, 0, arc);
opengl_bind_vertex_layout(vert_def);
glDrawArrays(GL_QUAD_STRIP, 0, segments * 2);
}
GL_CHECK_FOR_ERRORS("end of opengl_arc()");
gr_opengl_end_2d_matrix();
delete [] arc;
}
void gr_opengl_curve(int xc, int yc, int r, int direction, int resize_mode)
{
int a, b, p;
if (resize_mode != GR_RESIZE_NONE) {
gr_resize_screen_pos(&xc, &yc, NULL, NULL, resize_mode);
}
if ( (xc + r) < gr_screen.clip_left ) {
return;
}
if ( (yc + r) < gr_screen.clip_top ) {
return;
}
p = 3 - (2 * r);
a = 0;
b = r;
switch (direction) {
case 0: {
yc += r;
xc += r;
while (a < b) {
// Draw the first octant
gr_opengl_line(xc - b + 1, yc - a, xc - b, yc - a, GR_RESIZE_NONE);
if (p < 0) {
p += (a << 2) + 6;
} else {
// Draw the second octant
gr_opengl_line(xc - a + 1, yc - b, xc - a, yc - b, GR_RESIZE_NONE);
p += ((a - b) << 2) + 10;
b--;
}
a++;
}
break;
}
case 1: {
yc += r;
while (a < b) {
// Draw the first octant
gr_opengl_line(xc + b - 1, yc - a, xc + b, yc - a, GR_RESIZE_NONE);
if (p < 0) {
p += (a << 2) + 6;
} else {
// Draw the second octant
gr_opengl_line(xc + a - 1, yc - b, xc + a, yc - b, GR_RESIZE_NONE);
p += ((a - b) << 2) + 10;
b--;
}
a++;
}
break;
}
case 2: {
xc += r;
while (a < b) {
// Draw the first octant
gr_opengl_line(xc - b + 1, yc + a, xc - b, yc + a, GR_RESIZE_NONE);
if (p < 0) {
p += (a << 2) + 6;
} else {
// Draw the second octant
gr_opengl_line(xc - a + 1, yc + b, xc - a, yc + b, GR_RESIZE_NONE);
p += ((a - b) << 2) + 10;
b--;
}
a++;
}
break;
}
case 3: {
while (a < b) {
// Draw the first octant
gr_opengl_line(xc + b - 1, yc + a, xc + b, yc + a, GR_RESIZE_NONE);
if (p < 0) {
p += (a << 2) + 6;
} else {
// Draw the second octant
gr_opengl_line(xc + a - 1, yc + b, xc + a, yc + b, GR_RESIZE_NONE);
p += ((a - b) << 2) + 10;
b--;
}
a++;
}
break;
}
}
}
struct v6 { GLfloat x,y,z,w,u,v; };
struct c4 { GLubyte r,g,b,a; };
void opengl_draw_primitive(int nv, vertex **verts, uint flags, float u_scale, float v_scale, int r, int g, int b, int a, int override_primary = 0)
{
GLenum gl_mode = GL_TRIANGLE_FAN;
float sx, sy, sz, sw;
int i,j;
vertex *va;
bool isNebula = false;
bool isRamp = false;
bool isRGB = false;
ubyte alpha = (ubyte)a;
struct v6 *vertPos = (struct v6*) vm_malloc(sizeof(struct v6) * nv);
struct c4 *vertCol = (struct c4*) vm_malloc(sizeof(struct c4) * nv);
GL_CHECK_FOR_ERRORS("start of draw_primitive()");
if (flags & TMAP_FLAG_NEBULA) {
isNebula = true;
} else if (flags & TMAP_FLAG_GOURAUD) {
if (flags & TMAP_FLAG_RAMP) {
isRamp = true;
} else if (flags & TMAP_FLAG_RGB) {
isRGB = true;
}
} else {
GL_state.Color( (ubyte)r, (ubyte)g, (ubyte)b, alpha );
}
if (flags & TMAP_FLAG_TRISTRIP) {
gl_mode = GL_TRIANGLE_STRIP;
} else if (flags & TMAP_FLAG_TRILIST) {
gl_mode = GL_TRIANGLES;
} else if (flags & TMAP_FLAG_QUADLIST) {
gl_mode = GL_QUADS;
} else if (flags & TMAP_FLAG_QUADSTRIP) {
gl_mode = GL_TRIANGLE_STRIP;
Assert((nv % 2) == 0);
}
for (i = (nv - 1), j = 0; i >= 0; i--, j++) {
va = verts[i];
sw = 1.0f;
if ( gr_zbuffering || (flags & TMAP_FLAG_NEBULA) ) {
sz = (1.0f - 1.0f / (1.0f + va->world.xyz.z / 32768.0f));
// if ( sz > 0.98f ) {
// sz = 0.98f;
// }
} else {
sz = 0.99f;
}
sx = va->screen.xyw.x + (float)gr_screen.offset_x;
sy = va->screen.xyw.y + (float)gr_screen.offset_y;
if (flags & TMAP_FLAG_CORRECT) {
sx /= va->screen.xyw.w;
sy /= va->screen.xyw.w;
sz /= va->screen.xyw.w;
sw /= va->screen.xyw.w;
}
if (flags & TMAP_FLAG_ALPHA) {
alpha = va->a;
}
if (override_primary) {
vertCol[j].r = va->spec_r;
vertCol[j].g = va->spec_g;
vertCol[j].b = va->spec_b;
vertCol[j].a = 255;
} else {
if (isNebula) {
int pal = (va->b * (NEBULA_COLORS-1)) / 255;
vertCol[j].r = gr_palette[pal*3+0];
vertCol[j].g = gr_palette[pal*3+1];
vertCol[j].b = gr_palette[pal*3+2];
vertCol[j].a = alpha;
} else if (isRamp) {
vertCol[j].r = va->b;
vertCol[j].g = va->b;
vertCol[j].b = va->b;
vertCol[j].a = alpha;
} else if (isRGB) {
vertCol[j].r = va->r;
vertCol[j].g = va->g;
vertCol[j].b = va->b;
vertCol[j].a = alpha;
}
}
if (flags & TMAP_FLAG_TEXTURED) {
vertPos[j].u = va->texture_position.u * u_scale;
vertPos[j].v = va->texture_position.v * v_scale;
}
vertPos[j].x = sx;
vertPos[j].y = sy;
vertPos[j].z = -sz;
vertPos[j].w = sw;
}
GL_state.Array.BindArrayBuffer(0);
vertex_layout vert_def;
vert_def.add_vertex_component(vertex_format_data::POSITION4, sizeof(struct v6), &vertPos[0].x);
if(flags & TMAP_FLAG_TEXTURED) {
vert_def.add_vertex_component(vertex_format_data::TEX_COORD, sizeof(struct v6), &vertPos[0].u);
//vert_def.add_vertex_component(vertex_format_data::TEX_COORD1, sizeof(struct v6), &vertPos[0].u);
}
if(flags & (TMAP_FLAG_NEBULA | TMAP_FLAG_GOURAUD)) {
vert_def.add_vertex_component(vertex_format_data::COLOR4, 0, &vertCol[0].r);
}
opengl_bind_vertex_layout(vert_def);
glDrawArrays(gl_mode, 0, nv);
GL_CHECK_FOR_ERRORS("start of draw_primitive()");
vm_free(vertPos);
vm_free(vertCol);
}
void opengl_tmapper_internal(int nv, vertex **verts, uint flags, int is_scaler = 0)
{
int i, stage = 0;
float u_scale = 1.0f, v_scale = 1.0f;
int alpha,tmap_type, r, g, b;
GL_CHECK_FOR_ERRORS("start of tmapper_internal()");
opengl_setup_render_states(r, g, b, alpha, tmap_type, flags, is_scaler);
if (flags & TMAP_FLAG_TEXTURED) {
if ( !gr_opengl_tcache_set(gr_screen.current_bitmap, tmap_type, &u_scale, &v_scale, stage) ) {
return;
}
stage++; // bump!
// glowmap
if ( Cmdline_glow && (GLOWMAP > -1) ) {
if ( !gr_opengl_tcache_set(GLOWMAP, tmap_type, &u_scale, &v_scale, stage) ) {
return;
}
opengl_set_additive_tex_env();
stage++; // bump
}
}
if ( (flags & TMAP_FLAG_PIXEL_FOG) && (Neb2_render_mode == NEB2_RENDER_POF) ) {
int nr, ng, nb;
int ra, ga, ba;
ra = ga = ba = 0;
for (i = (nv - 1); i >= 0; i--) {
vertex *va = verts[i];
float sx, sy;
if (gr_screen.offset_x || gr_screen.offset_y) {
sx = ((va->screen.xyw.x * 16.0f) + ((float)gr_screen.offset_x * 16.0f)) / 16.0f;
sy = ((va->screen.xyw.y * 16.0f) + ((float)gr_screen.offset_y * 16.0f)) / 16.0f;
} else {
sx = va->screen.xyw.x;
sy = va->screen.xyw.y;
}
neb2_get_pixel( (int)sx, (int)sy, &nr, &ng, &nb );
ra += nr;
ga += ng;
ba += nb;
}
ra /= nv;
ga /= nv;
ba /= nv;
gr_fog_set(GR_FOGMODE_FOG, ra, ga, ba);
}
gr_opengl_set_2d_matrix();
opengl_draw_primitive(nv, verts, flags, u_scale, v_scale, r, g, b, alpha);
GL_state.Texture.DisableAll();
gr_opengl_end_2d_matrix();
GL_CHECK_FOR_ERRORS("end of tmapper_internal()");
}
// ok we're making some assumptions for now. mainly it must not be multitextured, lit or fogged.
void opengl_tmapper_internal3d(int nv, vertex **verts, uint flags)
{
int alpha, tmap_type, r, g, b;
float u_scale = 1.0f, v_scale = 1.0f;
GLenum gl_mode = GL_TRIANGLE_FAN;
bool isRGB = false;
GL_CHECK_FOR_ERRORS("start of tmapper_internal3d()");
opengl_setup_render_states(r, g, b, alpha, tmap_type, flags);
if (flags & TMAP_FLAG_TEXTURED) {
if ( !gr_opengl_tcache_set(gr_screen.current_bitmap, tmap_type, &u_scale, &v_scale) ) {
return;
}
}
opengl_shader_set_current();
GLboolean cull_face = GL_state.CullFace(GL_FALSE);
if (flags & TMAP_FLAG_TRILIST) {
gl_mode = GL_TRIANGLES;
} else if (flags & TMAP_FLAG_TRISTRIP) {
gl_mode = GL_TRIANGLE_STRIP;
} else if (flags & TMAP_FLAG_QUADLIST) {
gl_mode = GL_QUADS;
} else if (flags & TMAP_FLAG_QUADSTRIP) {
gl_mode = GL_QUAD_STRIP;
}
if ( (flags & TMAP_FLAG_RGB) && (flags & TMAP_FLAG_GOURAUD) ) {
isRGB = true;
}
// use what opengl_setup_render_states() gives us since this works much better for nebula and transparency
if ( !isRGB ) {
GL_state.Color( (ubyte)r, (ubyte)g, (ubyte)b, (ubyte)alpha );
}
SCP_vector<ubyte> colour;
SCP_vector<float> vertvec;
SCP_vector<float> uvcoords;
if (isRGB)
colour.reserve(nv * 4);
vertvec.reserve(nv * 3);
uvcoords.reserve(nv * 2);
for (int i = 0; i < nv; i++) {
vertex *va = verts[i];
if (isRGB) {
colour.push_back(va->r);
colour.push_back(va->g);
colour.push_back(va->b);
colour.push_back((ubyte) alpha);
}
uvcoords.push_back(va->texture_position.u);
uvcoords.push_back(va->texture_position.v);
vertvec.push_back(va->world.xyz.x);
vertvec.push_back(va->world.xyz.y);
vertvec.push_back(va->world.xyz.z);
}
GL_state.Array.BindArrayBuffer(0);
vertex_layout vert_def;
if (isRGB) {
vert_def.add_vertex_component(vertex_format_data::COLOR4, 0, &colour.front());
}
vert_def.add_vertex_component(vertex_format_data::POSITION3, 0, &vertvec.front());
vert_def.add_vertex_component(vertex_format_data::TEX_COORD, 0, &uvcoords.front());
opengl_bind_vertex_layout(vert_def);
glDrawArrays(gl_mode, 0, nv);
GL_state.CullFace(cull_face);
GL_CHECK_FOR_ERRORS("end of tmapper_internal3d()");
}
void gr_opengl_tmapper(int nverts, vertex **verts, uint flags)
{
if ( !Cmdline_nohtl && (flags & TMAP_HTL_3D_UNLIT) ) {
opengl_tmapper_internal3d(nverts, verts, flags);
} else {
opengl_tmapper_internal(nverts, verts, flags);
}
}
void opengl_render_internal(int nverts, vertex *verts, uint flags)
{
int alpha, tmap_type, r, g, b;
float u_scale = 1.0f, v_scale = 1.0f;
GLenum gl_mode = GL_TRIANGLE_FAN;
bool texture_matrix_set = false;
GL_CHECK_FOR_ERRORS("start of render()");
opengl_setup_render_states(r, g, b, alpha, tmap_type, flags);
if (flags & TMAP_FLAG_TRILIST) {
gl_mode = GL_TRIANGLES;
} else if (flags & TMAP_FLAG_TRISTRIP) {
gl_mode = GL_TRIANGLE_STRIP;
} else if (flags & TMAP_FLAG_QUADLIST) {
gl_mode = GL_QUADS;
} else if (flags & TMAP_FLAG_QUADSTRIP) {
gl_mode = GL_QUAD_STRIP;
}
GL_state.Array.BindArrayBuffer(0);
vertex_layout vert_def;
if (flags & TMAP_FLAG_TEXTURED) {
if ( !gr_opengl_tcache_set(gr_screen.current_bitmap, tmap_type, &u_scale, &v_scale) ) {
return;
}
vert_def.add_vertex_component(vertex_format_data::TEX_COORD, sizeof(vertex), &verts[0].texture_position.u);
// adjust texture coords if needed
if ( (u_scale != 1.0f) || (v_scale != 1.0f) ) {
glMatrixMode(GL_TEXTURE);
glPushMatrix();
glScalef(u_scale, v_scale, 1.0f);
// switch back to the default modelview mode
glMatrixMode(GL_MODELVIEW);
texture_matrix_set = true;
}
}
if ( (flags & TMAP_FLAG_RGB) && (flags & TMAP_FLAG_GOURAUD) ) {
if (flags & TMAP_FLAG_ALPHA) {
vert_def.add_vertex_component(vertex_format_data::COLOR4, sizeof(vertex), &verts[0].r);
} else {
GL_state.Color( (ubyte)r, (ubyte)g, (ubyte)b, (ubyte)alpha );
vert_def.add_vertex_component(vertex_format_data::COLOR3, sizeof(vertex), &verts[0].r);
}
}
// use what opengl_setup_render_states() gives us since this works much better for nebula and transparency
else {
GL_state.Color( (ubyte)r, (ubyte)g, (ubyte)b, (ubyte)alpha );
}
float offset_z = -0.99f;
glPushMatrix();
glTranslatef((float)gr_screen.offset_x, (float)gr_screen.offset_y, offset_z);
vert_def.add_vertex_component(vertex_format_data::POSITION2, sizeof(vertex), &verts[0].screen.xyw.x);
opengl_bind_vertex_layout(vert_def);
gr_opengl_set_2d_matrix();
glDrawArrays(gl_mode, 0, nverts);
gr_opengl_end_2d_matrix();
GL_state.Texture.DisableAll();
if (texture_matrix_set) {
glMatrixMode(GL_TEXTURE);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
}
glPopMatrix();
GL_CHECK_FOR_ERRORS("end of render()");
}
void opengl_render_internal3d(int nverts, vertex *verts, uint flags)
{
int alpha, tmap_type, r, g, b;
float u_scale = 1.0f, v_scale = 1.0f;
GLenum gl_mode = GL_TRIANGLE_FAN;
GL_CHECK_FOR_ERRORS("start of render3d()");
opengl_setup_render_states(r, g, b, alpha, tmap_type, flags);
GL_state.Array.BindArrayBuffer(0);
vertex_layout vert_def;
if (flags & TMAP_FLAG_TEXTURED) {
if ( !gr_opengl_tcache_set(gr_screen.current_bitmap, tmap_type, &u_scale, &v_scale) ) {
return;
}
vert_def.add_vertex_component(vertex_format_data::TEX_COORD, sizeof(vertex), &verts[0].texture_position.u);
}
GLboolean cull_face = GL_state.CullFace(GL_FALSE);
GLboolean lighting = GL_state.Lighting(GL_FALSE);
if (flags & TMAP_FLAG_TRILIST) {
gl_mode = GL_TRIANGLES;
} else if (flags & TMAP_FLAG_TRISTRIP) {
gl_mode = GL_TRIANGLE_STRIP;
} else if (flags & TMAP_FLAG_QUADLIST) {
gl_mode = GL_QUADS;
} else if (flags & TMAP_FLAG_QUADSTRIP) {
gl_mode = GL_QUAD_STRIP;
} else if (flags & TMAP_FLAG_LINES) {
gl_mode = GL_LINES;
}
if ( (flags & TMAP_FLAG_RGB) && (flags & TMAP_FLAG_GOURAUD) ) {
vert_def.add_vertex_component(vertex_format_data::COLOR4, sizeof(vertex), &verts[0].r);
}
// use what opengl_setup_render_states() gives us since this works much better for nebula and transparency
else {
GL_state.Color( (ubyte)r, (ubyte)g, (ubyte)b, (ubyte)alpha );
}
vert_def.add_vertex_component(vertex_format_data::POSITION3, sizeof(vertex), &verts[0].world.xyz.x);
opengl_bind_vertex_layout(vert_def);
glDrawArrays(gl_mode, 0, nverts);
GL_state.CullFace(cull_face);
GL_state.Lighting(lighting);
GL_CHECK_FOR_ERRORS("end of render3d()");
}
//Used by the effects batcher to determine whether to use shaders or not
bool Use_Shaders_for_effect_rendering = true;
void gr_opengl_render_effect(int nverts, vertex *verts, float *radius_list, uint flags)
{
int alpha, tmap_type, r, g, b;
float u_scale = 1.0f, v_scale = 1.0f;
GLenum gl_mode = GL_TRIANGLE_FAN;
int zbuff = ZBUFFER_TYPE_DEFAULT;
GL_CHECK_FOR_ERRORS("start of render3d()");
Assert(Scene_depth_texture != 0);
opengl_setup_render_states(r, g, b, alpha, tmap_type, flags);
GL_state.Array.BindArrayBuffer(0);
vertex_layout vert_def;
if ( flags & TMAP_FLAG_TEXTURED ) {
if ( flags & TMAP_FLAG_SOFT_QUAD ) {
if( (flags & TMAP_FLAG_DISTORTION) || (flags & TMAP_FLAG_DISTORTION_THRUSTER) )
{
glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
opengl_tnl_set_material_distortion(flags);
zbuff = gr_zbuffer_set(GR_ZBUFF_READ);
}
else
{
opengl_tnl_set_material_soft_particle(flags);
zbuff = gr_zbuffer_set(GR_ZBUFF_NONE);
}
vert_def.add_vertex_component(vertex_format_data::RADIUS, 0, radius_list);
}
if ( !gr_opengl_tcache_set(gr_screen.current_bitmap, tmap_type, &u_scale, &v_scale) ) {
return;
}
vert_def.add_vertex_component(vertex_format_data::TEX_COORD, sizeof(vertex), &verts[0].texture_position.u);
}
GLboolean cull_face = GL_state.CullFace(GL_FALSE);
GLboolean lighting = GL_state.Lighting(GL_FALSE);
if (flags & TMAP_FLAG_TRILIST) {
gl_mode = GL_TRIANGLES;
} else if (flags & TMAP_FLAG_TRISTRIP) {
gl_mode = GL_TRIANGLE_STRIP;
} else if (flags & TMAP_FLAG_QUADLIST) {
gl_mode = GL_QUADS;
} else if (flags & TMAP_FLAG_QUADSTRIP) {
gl_mode = GL_QUAD_STRIP;
}
if ( (flags & TMAP_FLAG_RGB) && (flags & TMAP_FLAG_GOURAUD) ) {
vert_def.add_vertex_component(vertex_format_data::COLOR4, sizeof(vertex), &verts[0].r);
}
// use what opengl_setup_render_states() gives us since this works much better for nebula and transparency
else {
GL_state.Color( (ubyte)r, (ubyte)g, (ubyte)b, (ubyte)alpha );
}
vert_def.add_vertex_component(vertex_format_data::POSITION3, sizeof(vertex), &verts[0].world.xyz.x);
opengl_bind_vertex_layout(vert_def);
glDrawArrays(gl_mode, 0, nverts);
opengl_shader_set_current();
GL_state.Texture.DisableAll();
GL_state.CullFace(cull_face);
GL_state.Lighting(lighting);
gr_zbuffer_set(zbuff);
GL_CHECK_FOR_ERRORS("end of render3d()");
}
void gr_opengl_render(int nverts, vertex *verts, uint flags)
{
if ( !Cmdline_nohtl && (flags & TMAP_HTL_3D_UNLIT) ) {
opengl_render_internal3d(nverts, verts, flags);
} else {
opengl_render_internal(nverts, verts, flags);
}
}
#define FIND_SCALED_NUM(x, x0, x1, y0, y1) ( ((((x) - (x0)) * ((y1) - (y0))) / ((x1) - (x0))) + (y0) )
void gr_opengl_scaler(vertex *va, vertex *vb, bool bw_bitmap = false)
{
float x0, y0, x1, y1;
float u0, v0, u1, v1;
float clipped_x0, clipped_y0, clipped_x1, clipped_y1;
float clipped_u0, clipped_v0, clipped_u1, clipped_v1;
float xmin, xmax, ymin, ymax;
int dx0, dy0, dx1, dy1;
x0 = va->screen.xyw.x;
y0 = va->screen.xyw.y;
x1 = vb->screen.xyw.x;
y1 = vb->screen.xyw.y;
xmin = i2fl(gr_screen.clip_left);
ymin = i2fl(gr_screen.clip_top);
xmax = i2fl(gr_screen.clip_right);
ymax = i2fl(gr_screen.clip_bottom);
u0 = va->texture_position.u; v0 = va->texture_position.v;
u1 = vb->texture_position.u; v1 = vb->texture_position.v;
// Check for obviously offscreen bitmaps...
if ( (y1 <= y0) || (x1 <= x0) ) {
return;
}
if ( (x1 < xmin ) || (x0 > xmax) ) {
return;
}
if ( (y1 < ymin ) || (y0 > ymax) ) {
return;
}
clipped_u0 = u0;
clipped_v0 = v0;
clipped_u1 = u1;
clipped_v1 = v1;
clipped_x0 = x0;
clipped_y0 = y0;
clipped_x1 = x1;
clipped_y1 = y1;
// Clip the left, moving u0 right as necessary
if (x0 < xmin) {
clipped_u0 = FIND_SCALED_NUM(xmin, x0, x1, u0, u1);
clipped_x0 = xmin;
}
// Clip the right, moving u1 left as necessary
if (x1 > xmax) {
clipped_u1 = FIND_SCALED_NUM(xmax, x0, x1, u0, u1);
clipped_x1 = xmax;
}
// Clip the top, moving v0 down as necessary
if (y0 < ymin) {
clipped_v0 = FIND_SCALED_NUM(ymin, y0, y1, v0, v1);
clipped_y0 = ymin;
}
// Clip the bottom, moving v1 up as necessary
if (y1 > ymax) {
clipped_v1 = FIND_SCALED_NUM(ymax, y0, y1, v0, v1);
clipped_y1 = ymax;
}
dx0 = fl2i(clipped_x0);
dx1 = fl2i(clipped_x1);
dy0 = fl2i(clipped_y0);
dy1 = fl2i(clipped_y1);
if ( (dx1 <= dx0) || (dy1 <= dy0) ) {
return;
}
vertex v[4];
vertex *vl[4];
vl[0] = &v[0];
v[0].screen.xyw.x = clipped_x0;
v[0].screen.xyw.y = clipped_y0;
v[0].screen.xyw.w = va->screen.xyw.w;
v[0].world.xyz.z = va->world.xyz.z;
v[0].texture_position.u = clipped_u0;
v[0].texture_position.v = clipped_v0;
v[0].spec_r = 0;
v[0].spec_g = 0;
v[0].spec_b = 0;
vl[1] = &v[1];
v[1].screen.xyw.x = clipped_x1;
v[1].screen.xyw.y = clipped_y0;
v[1].screen.xyw.w = va->screen.xyw.w;
v[1].world.xyz.z = va->world.xyz.z;
v[1].texture_position.u = clipped_u1;
v[1].texture_position.v = clipped_v0;
v[1].spec_r = 0;
v[1].spec_g = 0;
v[1].spec_b = 0;
vl[2] = &v[2];
v[2].screen.xyw.x = clipped_x1;
v[2].screen.xyw.y = clipped_y1;
v[2].screen.xyw.w = va->screen.xyw.w;
v[2].world.xyz.z = va->world.xyz.z;
v[2].texture_position.u = clipped_u1;
v[2].texture_position.v = clipped_v1;
v[2].spec_r = 0;
v[2].spec_g = 0;
v[2].spec_b = 0;
vl[3] = &v[3];
v[3].screen.xyw.x = clipped_x0;
v[3].screen.xyw.y = clipped_y1;
v[3].screen.xyw.w = va->screen.xyw.w;
v[3].world.xyz.z = va->world.xyz.z;
v[3].texture_position.u = clipped_u0;
v[3].texture_position.v = clipped_v1;
v[3].spec_r = 0;
v[3].spec_g = 0;
v[3].spec_b = 0;
if (!bw_bitmap)
{
opengl_tmapper_internal( 4, vl, TMAP_FLAG_TEXTURED, 1 );
}
else
{
opengl_tmapper_internal( 4, vl,( TMAP_FLAG_TEXTURED | TMAP_FLAG_BW_TEXTURE ), 1 );
}
}
// cross fade
void gr_opengl_cross_fade(int bmap1, int bmap2, int x1, int y1, int x2, int y2, float pct, int resize_mode)
{
gr_set_bitmap(bmap1, GR_ALPHABLEND_FILTER, GR_BITBLT_MODE_NORMAL, 1.0f - pct);
gr_bitmap(x1, y1, resize_mode);
gr_set_bitmap(bmap2, GR_ALPHABLEND_FILTER, GR_BITBLT_MODE_NORMAL, pct);
gr_bitmap(x2, y2, resize_mode);
}
void gr_opengl_shade(int x, int y, int w, int h, int resize_mode)
{
if (resize_mode != GR_RESIZE_NONE) {
gr_resize_screen_pos(&x, &y, &w, &h, resize_mode);
}
int x1 = (gr_screen.offset_x + x);
int y1 = (gr_screen.offset_y + y);
int x2 = (gr_screen.offset_x + w);
int y2 = (gr_screen.offset_y + h);
if ( (x1 >= gr_screen.max_w) || (y1 >= gr_screen.max_h) ) {
return;
}
CLAMP(x2, x1+1, gr_screen.max_w);
CLAMP(y2, y1+1, gr_screen.max_h);
GL_state.SetTextureSource(TEXTURE_SOURCE_NONE);
GL_state.SetAlphaBlendMode(ALPHA_BLEND_ALPHA_BLEND_ALPHA);
GL_state.SetZbufferType(ZBUFFER_TYPE_NONE);
gr_opengl_set_2d_matrix();
GL_state.Color( (GLubyte)gr_screen.current_shader.r, (GLubyte)gr_screen.current_shader.g,
(GLubyte)gr_screen.current_shader.b, (GLubyte)gr_screen.current_shader.c );
opengl_draw_coloured_quad((GLint)x1, (GLint)y1, (GLint)x2, (GLint)y2);
gr_opengl_end_2d_matrix();
}
void gr_opengl_flash(int r, int g, int b)
{
if ( !(r || g || b) ) {
return;
}
CLAMP(r, 0, 255);
CLAMP(g, 0, 255);
CLAMP(b, 0, 255);
GL_state.SetTextureSource(TEXTURE_SOURCE_NONE);
GL_state.SetAlphaBlendMode(ALPHA_BLEND_ALPHA_ADDITIVE);
GL_state.SetZbufferType(ZBUFFER_TYPE_NONE);
int x1 = (gr_screen.clip_left + gr_screen.offset_x);
int y1 = (gr_screen.clip_top + gr_screen.offset_y);
int x2 = (gr_screen.clip_right + gr_screen.offset_x) + 1;
int y2 = (gr_screen.clip_bottom + gr_screen.offset_y) + 1;
GL_state.Color( (GLubyte)r, (GLubyte)g, (GLubyte)b, 255 );
opengl_draw_coloured_quad((GLint)x1, (GLint)y1, (GLint)x2, (GLint)y2);
}
void gr_opengl_flash_alpha(int r, int g, int b, int a)
{
if ( !(r || g || b || a) ) {
return;
}
CLAMP(r, 0, 255);
CLAMP(g, 0, 255);
CLAMP(b, 0, 255);
CLAMP(a, 0, 255);
GL_state.SetTextureSource(TEXTURE_SOURCE_NONE);
GL_state.SetAlphaBlendMode(ALPHA_BLEND_ALPHA_BLEND_ALPHA);
GL_state.SetZbufferType(ZBUFFER_TYPE_NONE);
int x1 = (gr_screen.clip_left + gr_screen.offset_x);
int y1 = (gr_screen.clip_top + gr_screen.offset_y);
int x2 = (gr_screen.clip_right + gr_screen.offset_x) + 1;
int y2 = (gr_screen.clip_bottom + gr_screen.offset_y) + 1;
GL_state.Color( (GLubyte)r, (GLubyte)g, (GLubyte)b, (GLubyte)a );
opengl_draw_coloured_quad((GLint)x1, (GLint)y1, (GLint)x2, (GLint)y2);
}
void gr_opengl_fade_in(int instantaneous)
{
// Empty - DDOI
}
void gr_opengl_fade_out(int instantaneous)
{
// Empty - DDOI
}
void opengl_bitmap_ex_internal(int x, int y, int w, int h, int sx, int sy, int resize_mode)
{
if ( (w < 1) || (h < 1) ) {
return;
}
float u_scale, v_scale;
float u0, u1, v0, v1;
float x1, x2, y1, y2;
int bw, bh, do_resize;
GL_state.SetTextureSource(TEXTURE_SOURCE_NO_FILTERING);
GL_state.SetAlphaBlendMode(ALPHA_BLEND_ALPHA_BLEND_ALPHA);
GL_state.SetZbufferType(ZBUFFER_TYPE_NONE);
if ( !gr_opengl_tcache_set(gr_screen.current_bitmap, TCACHE_TYPE_INTERFACE, &u_scale, &v_scale) ) {
return;
}
if ( resize_mode != GR_RESIZE_NONE && (gr_screen.custom_size || (gr_screen.rendering_to_texture != -1)) ) {
do_resize = 1;
} else {
do_resize = 0;
}
bm_get_info(gr_screen.current_bitmap, &bw, &bh);
u0 = u_scale * (i2fl(sx) / i2fl(bw));
v0 = v_scale * (i2fl(sy) / i2fl(bh));
u1 = u_scale * (i2fl(sx+w) / i2fl(bw));
v1 = v_scale * (i2fl(sy+h) / i2fl(bh));
x1 = i2fl(x + ((do_resize) ? gr_screen.offset_x_unscaled : gr_screen.offset_x));
y1 = i2fl(y + ((do_resize) ? gr_screen.offset_y_unscaled : gr_screen.offset_y));
x2 = x1 + i2fl(w);
y2 = y1 + i2fl(h);
if (do_resize) {
gr_resize_screen_posf(&x1, &y1, NULL, NULL, resize_mode);
gr_resize_screen_posf(&x2, &y2, NULL, NULL, resize_mode);
}
GL_state.Color(255, 255, 255, (GLubyte)(gr_screen.current_alpha * 255));
opengl_draw_textured_quad(x1, y1, u0, v0, x2, y2, u1, v1);
}
//these are penguins bitmap functions
void gr_opengl_bitmap_ex(int x, int y, int w, int h, int sx, int sy, int resize_mode)
{
int reclip;
#ifndef NDEBUG
int count = 0;
#endif
int dx1 = x;
int dx2 = x + w - 1;
int dy1 = y;
int dy2 = y + h - 1;
int bw, bh, do_resize;
bm_get_info(gr_screen.current_bitmap, &bw, &bh);
if ( resize_mode != GR_RESIZE_NONE && (gr_screen.custom_size || (gr_screen.rendering_to_texture != -1)) ) {
do_resize = 1;
} else {
do_resize = 0;
}
int clip_left = ((do_resize) ? gr_screen.clip_left_unscaled : gr_screen.clip_left);
int clip_right = ((do_resize) ? gr_screen.clip_right_unscaled : gr_screen.clip_right);
int clip_top = ((do_resize) ? gr_screen.clip_top_unscaled : gr_screen.clip_top);
int clip_bottom = ((do_resize) ? gr_screen.clip_bottom_unscaled : gr_screen.clip_bottom);
do {
reclip = 0;
#ifndef NDEBUG
if (count > 1) {
Int3();
}
count++;
#endif
if ( (dx1 > clip_right) || (dx2 < clip_left) ) {
return;
}
if ( (dy1 > clip_bottom) || (dy2 < clip_top) ) {
return;
}
if ( dx1 < clip_left ) {
sx += clip_left-dx1;
dx1 = clip_left;
}
if ( dy1 < clip_top ) {
sy += clip_top-dy1;
dy1 = clip_top;
}
if ( dx2 > clip_right ) {
dx2 = clip_right;
}
if ( dy2 > clip_bottom ) {
dy2 = clip_bottom;
}
if ( sx < 0 ) {
dx1 -= sx;
sx = 0;
reclip = 1;
}
if ( sy < 0 ) {
dy1 -= sy;
sy = 0;
reclip = 1;
}
w = dx2 - dx1 + 1;
h = dy2 - dy1 + 1;
if ( (sx + w) > bw ) {
w = bw - sx;
dx2 = dx1 + w - 1;
}
if ( (sy + h) > bh ) {
h = bh - sy;
dy2 = dy1 + h - 1;
}
if ( (w < 1) || (h < 1) ) {
// clipped away!
return;
}
} while (reclip);
// Make sure clipping algorithm works
#ifndef NDEBUG
Assert( w > 0 );
Assert( h > 0 );
Assert( w == (dx2 - dx1 + 1) );
Assert( h == (dy2 - dy1 + 1) );
Assert( sx >= 0 );
Assert( sy >= 0 );
Assert( (sx + w) <= bw );
Assert( (sy + h) <= bh );
Assert( dx2 >= dx1 );
Assert( dy2 >= dy1 );
Assert( (dx1 >= clip_left) && (dx1 <= clip_right) );
Assert( (dx2 >= clip_left) && (dx2 <= clip_right) );
Assert( (dy1 >= clip_top) && (dy1 <= clip_bottom) );
Assert( (dy2 >= clip_top) && (dy2 <= clip_bottom) );
#endif
// We now have dx1,dy1 and dx2,dy2 and sx, sy all set validly within clip regions.
opengl_bitmap_ex_internal(dx1, dy1, (dx2 - dx1 + 1), (dy2 - dy1 + 1), sx, sy, resize_mode);
}
/*void gr_opengl_bitmap(int x, int y, int resize_mode)
{
int w, h, do_resize;
bm_get_info( gr_screen.current_bitmap, &w, &h, NULL );
if ( resize_mode != GR_RESIZE_NONE && (gr_screen.custom_size || (gr_screen.rendering_to_texture != -1)) ) {
do_resize = 1;
} else {
do_resize = 0;
}
int dx1=x, dx2=x+w-1;
int dy1=y, dy2=y+h-1;
int sx=0, sy=0;
int clip_left = ((do_resize) ? gr_screen.clip_left_unscaled : gr_screen.clip_left);
int clip_right = ((do_resize) ? gr_screen.clip_right_unscaled : gr_screen.clip_right);
int clip_top = ((do_resize) ? gr_screen.clip_top_unscaled : gr_screen.clip_top);
int clip_bottom = ((do_resize) ? gr_screen.clip_bottom_unscaled : gr_screen.clip_bottom);
if ( (dx1 > clip_right) || (dx2 < clip_left) ) return;
if ( (dy1 > clip_bottom) || (dy2 < clip_top) ) return;
if ( dx1 < clip_left ) { sx = clip_left-dx1; dx1 = clip_left; }
if ( dy1 < clip_top ) { sy = clip_top-dy1; dy1 = clip_top; }
if ( dx2 > clip_right ) { dx2 = clip_right; }
if ( dy2 > clip_bottom ) { dy2 = clip_bottom; }
if ( sx < 0 ) return;
if ( sy < 0 ) return;
if ( sx >= w ) return;
if ( sy >= h ) return;
// Draw bitmap bm[sx,sy] into (dx1,dy1)-(dx2,dy2)
gr_opengl_bitmap_ex(dx1, dy1, dx2-dx1+1, dy2-dy1+1, sx, sy, resize_mode);
}*/
void gr_opengl_sphere_htl(float rad)
{
if (Cmdline_nohtl) {
return;
}
GLUquadricObj *quad = NULL;
// FIXME: before this is used in anything other than FRED2 we need to make this creation/deletion
// stuff global so that it's not so slow (it can be reused for multiple quadratic objects)
quad = gluNewQuadric();
if (quad == NULL) {
Int3();
return;
}
GL_state.SetTextureSource(TEXTURE_SOURCE_NONE);
GL_state.SetAlphaBlendMode(ALPHA_BLEND_NONE);
GL_state.SetZbufferType(ZBUFFER_TYPE_FULL);
opengl_shader_set_current();
GL_state.Color(gr_screen.current_color.red, gr_screen.current_color.green, gr_screen.current_color.blue);
// FIXME: opengl_check_for_errors() needs to be modified to work with this at
// some point but for now I just don't care so it does nothing
gluQuadricCallback(quad, GLU_ERROR, NULL);
// FIXME: maybe support fill/wireframe with a future flag?
gluQuadricDrawStyle(quad, GLU_FILL);
// assuming unlit spheres, otherwise use GLU_SMOOTH so that it looks better
gluQuadricNormals(quad, GLU_NONE);
// we could set the slices/stacks at some point in the future but just use 16 now since it looks ok
gluSphere(quad, (GLdouble)rad, 16, 16);
// FIXME: I just heard this scream "Globalize Me!!". It was really scary. I even cried.
gluDeleteQuadric(quad);
}
void gr_opengl_deferred_light_sphere_init(int rings, int segments) // Generate a VBO of a sphere of radius 1.0f, based on code at http://www.ogre3d.org/tikiwiki/ManualSphereMeshes
{
unsigned int nVertex = (rings + 1) * (segments+1) * 3;
unsigned int nIndex = deferred_light_sphere_icount = 6 * rings * (segments + 1);
float *Vertices = (float*)vm_malloc(sizeof(float) * nVertex);
float *pVertex = Vertices;
ushort *Indices = (ushort*)vm_malloc(sizeof(ushort) * nIndex);
ushort *pIndex = Indices;
float fDeltaRingAngle = (PI / rings);
float fDeltaSegAngle = (2.0f * PI / segments);
unsigned short wVerticeIndex = 0 ;
// Generate the group of rings for the sphere
for( int ring = 0; ring <= rings; ring++ ) {
float r0 = sinf (ring * fDeltaRingAngle);
float y0 = cosf (ring * fDeltaRingAngle);
// Generate the group of segments for the current ring
for(int seg = 0; seg <= segments; seg++) {
float x0 = r0 * sinf(seg * fDeltaSegAngle);
float z0 = r0 * cosf(seg * fDeltaSegAngle);
// Add one vertex to the strip which makes up the sphere
*pVertex++ = x0;
*pVertex++ = y0;
*pVertex++ = z0;
if (ring != rings) {
// each vertex (except the last) has six indices pointing to it
*pIndex++ = wVerticeIndex + (ushort)segments + 1;
*pIndex++ = wVerticeIndex;
*pIndex++ = wVerticeIndex + (ushort)segments;
*pIndex++ = wVerticeIndex + (ushort)segments + 1;
*pIndex++ = wVerticeIndex + 1;
*pIndex++ = wVerticeIndex;
wVerticeIndex ++;
}
}; // end for seg
} // end for ring
deferred_light_sphere_vcount = wVerticeIndex;
glGetError();
vglGenBuffersARB(1, &deferred_light_sphere_vbo);
// make sure we have one
if (deferred_light_sphere_vbo) {
vglBindBufferARB(GL_ARRAY_BUFFER_ARB, deferred_light_sphere_vbo);
vglBufferDataARB(GL_ARRAY_BUFFER_ARB, nVertex * sizeof(float), Vertices, GL_STATIC_DRAW_ARB);
// just in case
if ( opengl_check_for_errors() ) {
vglDeleteBuffersARB(1, &deferred_light_sphere_vbo);
deferred_light_sphere_vbo = 0;
return;
}
vglBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
vm_free(Vertices);
Vertices = NULL;
}
vglGenBuffersARB(1, &deferred_light_sphere_ibo);
// make sure we have one
if (deferred_light_sphere_ibo) {
vglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, deferred_light_sphere_ibo);
vglBufferDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, nIndex * sizeof(ushort), Indices, GL_STATIC_DRAW_ARB);
// just in case
if ( opengl_check_for_errors() ) {
vglDeleteBuffersARB(1, &deferred_light_sphere_ibo);
deferred_light_sphere_ibo = 0;
return;
}
vglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
vm_free(Indices);
Indices = NULL;
}
}
void gr_opengl_draw_deferred_light_sphere(vec3d *position, float rad, bool clearStencil = true)
{
if (Cmdline_nohtl) {
return;
}
g3_start_instance_matrix(position, &vmd_identity_matrix, true);
GL_state.Uniform.setUniform3f("scale", rad, rad, rad);
GL_state.Array.BindArrayBuffer(deferred_light_sphere_vbo);
GL_state.Array.BindElementBuffer(deferred_light_sphere_ibo);
vertex_layout vertex_declare;
vertex_declare.add_vertex_component(vertex_format_data::POSITION3, 0, 0);
opengl_bind_vertex_layout(vertex_declare);
vglDrawRangeElements(GL_TRIANGLES, 0, deferred_light_sphere_vcount, deferred_light_sphere_icount, GL_UNSIGNED_SHORT, 0);
g3_done_instance(true);
}
void gr_opengl_deferred_light_cylinder_init(int segments) // Generate a VBO of a cylinder of radius and height 1.0f, based on code at http://www.ogre3d.org/tikiwiki/ManualSphereMeshes
{
unsigned int nVertex = (segments + 1) * 2 * 3 + 6; // Can someone verify this?
unsigned int nIndex = deferred_light_cylinder_icount = 12 * (segments + 1) - 6; //This too
float *Vertices = (float*)vm_malloc(sizeof(float) * nVertex);
float *pVertex = Vertices;
ushort *Indices = (ushort*)vm_malloc(sizeof(ushort) * nIndex);
ushort *pIndex = Indices;
float fDeltaSegAngle = (2.0f * PI / segments);
unsigned short wVerticeIndex = 0 ;
*pVertex++ = 0.0f;
*pVertex++ = 0.0f;
*pVertex++ = 0.0f;
wVerticeIndex ++;
*pVertex++ = 0.0f;
*pVertex++ = 0.0f;
*pVertex++ = 1.0f;
wVerticeIndex ++;
for( int ring = 0; ring <= 1; ring++ ) {
float z0 = (float)ring;
// Generate the group of segments for the current ring
for(int seg = 0; seg <= segments; seg++) {
float x0 = sinf(seg * fDeltaSegAngle);
float y0 = cosf(seg * fDeltaSegAngle);
// Add one vertex to the strip which makes up the cylinder
*pVertex++ = x0;
*pVertex++ = y0;
*pVertex++ = z0;
if (!ring) {
*pIndex++ = wVerticeIndex + (ushort)segments + 1;
*pIndex++ = wVerticeIndex;
*pIndex++ = wVerticeIndex + (ushort)segments;
*pIndex++ = wVerticeIndex + (ushort)segments + 1;
*pIndex++ = wVerticeIndex + 1;
*pIndex++ = wVerticeIndex;
if(seg != segments)
{
*pIndex++ = wVerticeIndex + 1;
*pIndex++ = wVerticeIndex;
*pIndex++ = 0;
}
wVerticeIndex ++;
}
else
{
if(seg != segments)
{
*pIndex++ = wVerticeIndex + 1;
*pIndex++ = wVerticeIndex;
*pIndex++ = 1;
wVerticeIndex ++;
}
}
}; // end for seg
} // end for ring
deferred_light_cylinder_vcount = wVerticeIndex;
glGetError();
vglGenBuffersARB(1, &deferred_light_cylinder_vbo);
// make sure we have one
if (deferred_light_cylinder_vbo) {
vglBindBufferARB(GL_ARRAY_BUFFER_ARB, deferred_light_cylinder_vbo);
vglBufferDataARB(GL_ARRAY_BUFFER_ARB, nVertex * sizeof(float), Vertices, GL_STATIC_DRAW_ARB);
// just in case
if ( opengl_check_for_errors() ) {
vglDeleteBuffersARB(1, &deferred_light_cylinder_vbo);
deferred_light_cylinder_vbo = 0;
return;
}
vglBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
vm_free(Vertices);
Vertices = NULL;
}
vglGenBuffersARB(1, &deferred_light_cylinder_ibo);
// make sure we have one
if (deferred_light_cylinder_ibo) {
vglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, deferred_light_cylinder_ibo);
vglBufferDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, nIndex * sizeof(ushort), Indices, GL_STATIC_DRAW_ARB);
// just in case
if ( opengl_check_for_errors() ) {
vglDeleteBuffersARB(1, &deferred_light_cylinder_ibo);
deferred_light_cylinder_ibo = 0;
return;
}
vglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
vm_free(Indices);
Indices = NULL;
}
}
void gr_opengl_draw_deferred_light_cylinder(vec3d *position,matrix *orient, float rad, float length, bool clearStencil = true)
{
if (Cmdline_nohtl) {
return;
}
g3_start_instance_matrix(position, orient, true);
GL_state.Uniform.setUniform3f("scale", rad, rad, length);
GL_state.Array.BindArrayBuffer(deferred_light_cylinder_vbo);
GL_state.Array.BindElementBuffer(deferred_light_cylinder_ibo);
vertex_layout vertex_declare;
vertex_declare.add_vertex_component(vertex_format_data::POSITION3, 0, 0);
opengl_bind_vertex_layout(vertex_declare);
vglDrawRangeElements(GL_TRIANGLES, 0, deferred_light_cylinder_vcount, deferred_light_cylinder_icount, GL_UNSIGNED_SHORT, 0);
g3_done_instance(true);
}
void gr_opengl_draw_line_list(colored_vector *lines, int num)
{
if (Cmdline_nohtl) {
return;
}
}
extern int opengl_check_framebuffer();
void opengl_setup_scene_textures()
{
Scene_texture_initialized = 0;
if ( !Use_GLSL || Cmdline_no_fbo || !Is_Extension_Enabled(OGL_EXT_FRAMEBUFFER_OBJECT) ) {
Cmdline_postprocess = 0;
Cmdline_softparticles = 0;
Cmdline_fb_explosions = 0;
Scene_color_texture = 0;
Scene_effect_texture = 0;
Scene_depth_texture = 0;
return;
}
// for ease of use we require support for non-power-of-2 textures in one
// form or another:
// - the NPOT extension
// - GL version 2.0+ (which should work for non-reporting ATI cards since we don't use mipmaps)
if ( !(Is_Extension_Enabled(OGL_ARB_TEXTURE_NON_POWER_OF_TWO) || (GL_version >= 20)) ) {
Cmdline_postprocess = 0;
Cmdline_softparticles = 0;
Scene_color_texture = 0;
Scene_effect_texture = 0;
Scene_depth_texture = 0;
return;
}
// clamp size, if needed
Scene_texture_width = gr_screen.max_w;
Scene_texture_height = gr_screen.max_h;
if ( Scene_texture_width > GL_max_renderbuffer_size ) {
Scene_texture_width = GL_max_renderbuffer_size;
}
if ( Scene_texture_height > GL_max_renderbuffer_size) {
Scene_texture_height = GL_max_renderbuffer_size;
}
// create framebuffer
vglGenFramebuffersEXT(1, &Scene_framebuffer);
vglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, Scene_framebuffer);
// setup main render texture
glGenTextures(1, &Scene_color_texture);
GL_state.Texture.SetActiveUnit(0);
GL_state.Texture.SetTarget(GL_TEXTURE_2D);
GL_state.Texture.Enable(Scene_color_texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, Scene_texture_width, Scene_texture_height, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
vglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, Scene_color_texture, 0);
// setup position render texture
glGenTextures(1, &Scene_position_texture);
GL_state.Texture.SetActiveUnit(0);
GL_state.Texture.SetTarget(GL_TEXTURE_2D);
GL_state.Texture.Enable(Scene_position_texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F_ARB, Scene_texture_width, Scene_texture_height, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
vglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT1_EXT, GL_TEXTURE_2D, Scene_position_texture, 0);
// setup normal render texture
glGenTextures(1, &Scene_normal_texture);
GL_state.Texture.SetActiveUnit(0);
GL_state.Texture.SetTarget(GL_TEXTURE_2D);
GL_state.Texture.Enable(Scene_normal_texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F_ARB, Scene_texture_width, Scene_texture_height, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
vglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT2_EXT, GL_TEXTURE_2D, Scene_normal_texture, 0);
// setup specular render texture
glGenTextures(1, &Scene_specular_texture);
GL_state.Texture.SetActiveUnit(0);
GL_state.Texture.SetTarget(GL_TEXTURE_2D);
GL_state.Texture.Enable(Scene_specular_texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, Scene_texture_width, Scene_texture_height, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
vglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT3_EXT, GL_TEXTURE_2D, Scene_specular_texture, 0);
//Set up luminance texture (used as input for FXAA)
glGenTextures(1, &Scene_luminance_texture);
GL_state.Texture.SetActiveUnit(0);
GL_state.Texture.SetTarget(GL_TEXTURE_2D);
GL_state.Texture.Enable(Scene_luminance_texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, Scene_texture_width, Scene_texture_height, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
// setup effect texture
glGenTextures(1, &Scene_effect_texture);
GL_state.Texture.SetActiveUnit(0);
GL_state.Texture.SetTarget(GL_TEXTURE_2D);
GL_state.Texture.Enable(Scene_effect_texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, Scene_texture_width, Scene_texture_height, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
vglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT4_EXT, GL_TEXTURE_2D, Scene_effect_texture, 0);
// setup cockpit depth texture
glGenTextures(1, &Cockpit_depth_texture);
GL_state.Texture.SetActiveUnit(0);
GL_state.Texture.SetTarget(GL_TEXTURE_2D);
GL_state.Texture.Enable(Cockpit_depth_texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_NONE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT24, Scene_texture_width, Scene_texture_height, 0, GL_DEPTH_COMPONENT, GL_FLOAT, NULL);
vglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_2D, Cockpit_depth_texture, 0);
gr_zbuffer_set(GR_ZBUFF_FULL);
glClear(GL_DEPTH_BUFFER_BIT);
// setup main depth texture
glGenTextures(1, &Scene_depth_texture);
GL_state.Texture.SetActiveUnit(0);
GL_state.Texture.SetTarget(GL_TEXTURE_2D);
GL_state.Texture.Enable(Scene_depth_texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_NONE);
glTexParameteri(GL_TEXTURE_2D, GL_DEPTH_TEXTURE_MODE, GL_INTENSITY);
glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT24, Scene_texture_width, Scene_texture_height, 0, GL_DEPTH_COMPONENT, GL_FLOAT, NULL);
vglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, Scene_depth_texture, 0);
//setup main stencil buffer
vglGenRenderbuffersEXT(1, &Scene_stencil_buffer);
vglBindRenderbufferEXT(GL_RENDERBUFFER, Scene_stencil_buffer);
vglRenderbufferStorageEXT(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8_EXT, Scene_texture_width, Scene_texture_height);
//vglFramebufferRenderbufferEXT(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, Scene_stencil_buffer);
glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
if ( opengl_check_framebuffer() ) {
vglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
vglDeleteFramebuffersEXT(1, &Scene_framebuffer);
Scene_framebuffer = 0;
GL_state.Texture.Disable();
glDeleteTextures(1, &Scene_color_texture);
Scene_color_texture = 0;
glDeleteTextures(1, &Scene_position_texture);
Scene_position_texture = 0;
glDeleteTextures(1, &Scene_normal_texture);
Scene_normal_texture = 0;
glDeleteTextures(1, &Scene_specular_texture);
Scene_specular_texture = 0;
glDeleteTextures(1, &Scene_effect_texture);
Scene_effect_texture = 0;
glDeleteTextures(1, &Scene_depth_texture);
Scene_depth_texture = 0;
glDeleteTextures(1, &Scene_luminance_texture);
Scene_luminance_texture = 0;
//glDeleteTextures(1, &Scene_fxaa_output_texture);
//Scene_fxaa_output_texture = 0;
Cmdline_postprocess = 0;
Cmdline_softparticles = 0;
return;
}
//Setup thruster distortion framebuffer
vglGenFramebuffersEXT(1, &Distortion_framebuffer);
vglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, Distortion_framebuffer);
glGenTextures(2, Distortion_texture);
GL_state.Texture.SetActiveUnit(0);
GL_state.Texture.SetTarget(GL_TEXTURE_2D);
GL_state.Texture.Enable(Distortion_texture[0]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_REPEAT);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 32, 32, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
GL_state.Texture.Enable(Distortion_texture[1]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_REPEAT);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 32, 32, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
vglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, Distortion_texture[0], 0);
if ( opengl_check_framebuffer() ) {
vglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
vglDeleteFramebuffersEXT(1, &Distortion_framebuffer);
Distortion_framebuffer = 0;
GL_state.Texture.Disable();
glDeleteTextures(2, Distortion_texture);
Distortion_texture[0] = 0;
Distortion_texture[1] = 0;
return;
}
if ( opengl_check_for_errors("post_init_framebuffer()") ) {
Scene_color_texture = 0;
Scene_depth_texture = 0;
Cmdline_postprocess = 0;
Cmdline_softparticles = 0;
return;
}
vglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
Scene_texture_initialized = 1;
Scene_framebuffer_in_frame = false;
}
void opengl_scene_texture_shutdown()
{
if ( !Scene_texture_initialized ) {
return;
}
if ( Scene_color_texture ) {
glDeleteTextures(1, &Scene_color_texture);
Scene_color_texture = 0;
}
if ( Scene_position_texture ) {
glDeleteTextures(1, &Scene_position_texture);
Scene_position_texture = 0;
}
if ( Scene_normal_texture ) {
glDeleteTextures(1, &Scene_normal_texture);
Scene_normal_texture = 0;
}
if ( Scene_specular_texture ) {
glDeleteTextures(1, &Scene_specular_texture);
Scene_specular_texture = 0;
}
if ( Scene_effect_texture ) {
glDeleteTextures(1, &Scene_effect_texture);
Scene_effect_texture = 0;
}
if ( Scene_depth_texture ) {
glDeleteTextures(1, &Scene_depth_texture);
Scene_depth_texture = 0;
}
if ( Scene_framebuffer ) {
vglDeleteFramebuffersEXT(1, &Scene_framebuffer);
Scene_framebuffer = 0;
}
glDeleteTextures(2, Distortion_texture);
Distortion_texture[0] = 0;
Distortion_texture[1] = 0;
if ( Distortion_framebuffer ) {
vglDeleteFramebuffersEXT(1, &Distortion_framebuffer);
Distortion_framebuffer = 0;
}
Scene_texture_initialized = 0;
Scene_framebuffer_in_frame = false;
}
void gr_opengl_scene_texture_begin()
{
if ( !Scene_texture_initialized ) {
return;
}
if ( Scene_framebuffer_in_frame ) {
return;
}
vglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, Scene_framebuffer);
if (GL_rendering_to_texture)
{
Scene_texture_u_scale = i2fl(gr_screen.max_w) / i2fl(Scene_texture_width);
Scene_texture_v_scale = i2fl(gr_screen.max_h) / i2fl(Scene_texture_height);
CLAMP(Scene_texture_u_scale, 0.0f, 1.0f);
CLAMP(Scene_texture_v_scale, 0.0f, 1.0f);
}
else
{
Scene_texture_u_scale = 1.0f;
Scene_texture_v_scale = 1.0f;
}
if ( Cmdline_no_deferred_lighting ) {
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
} else {
GLenum buffers[] = { GL_COLOR_ATTACHMENT0_EXT, GL_COLOR_ATTACHMENT1_EXT, GL_COLOR_ATTACHMENT2_EXT, GL_COLOR_ATTACHMENT3_EXT };
vglDrawBuffers(4, buffers);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
opengl_clear_deferred_buffers();
glDrawBuffer(GL_COLOR_ATTACHMENT0);
}
Scene_framebuffer_in_frame = true;
}
float time_buffer = 0.0f;
void gr_opengl_scene_texture_end()
{
if ( !Scene_framebuffer_in_frame ) {
return;
}
time_buffer+=flFrametime;
if(time_buffer>0.03f)
{
gr_opengl_update_distortion();
time_buffer = 0.0f;
}
if ( Cmdline_postprocess && !PostProcessing_override ) {
gr_post_process_end();
} else {
GLboolean depth = GL_state.DepthTest(GL_FALSE);
GLboolean depth_mask = GL_state.DepthMask(GL_FALSE);
GLboolean light = GL_state.Lighting(GL_FALSE);
GLboolean blend = GL_state.Blend(GL_FALSE);
GLboolean cull = GL_state.CullFace(GL_FALSE);
vglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, opengl_get_rtt_framebuffer());
GL_state.Texture.SetActiveUnit(0);
GL_state.Texture.SetTarget(GL_TEXTURE_2D);
GL_state.Texture.Enable(Scene_color_texture);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
GL_state.Color(255, 255, 255, 255);
GL_state.Array.BindArrayBuffer(0);
if (GL_rendering_to_texture)
{
GLfloat vertices[8] = {
0.0f, (float)gr_screen.max_h,
(float)gr_screen.max_w, (float)gr_screen.max_h,
(float)gr_screen.max_w, 0.0f,
0.0f, 0.0f
};
GLfloat uvcoords[8] = {
Scene_texture_u_scale, 0.0f,
0.0f, 0.0f,
0.0f, Scene_texture_v_scale,
Scene_texture_u_scale, Scene_texture_v_scale
};
vertex_layout vert_def;
vert_def.add_vertex_component(vertex_format_data::POSITION2, 0, vertices);
vert_def.add_vertex_component(vertex_format_data::TEX_COORD, 0, uvcoords);
opengl_bind_vertex_layout(vert_def);
glDrawArrays(GL_QUADS, 0, 4);
}
else
{
GLfloat vertices[8] = {
0.0f, (float)gr_screen.max_h,
(float)gr_screen.max_w, (float)gr_screen.max_h,
(float)gr_screen.max_w, 0.0f,
0.0f, 0.0f
};
GLfloat uvcoords[8] = {
0.0f, 0.0f,
Scene_texture_u_scale, 0.0f,
Scene_texture_u_scale, Scene_texture_v_scale,
0.0f, Scene_texture_v_scale
};
vertex_layout vert_def;
vert_def.add_vertex_component(vertex_format_data::POSITION2, 0, vertices);
vert_def.add_vertex_component(vertex_format_data::TEX_COORD, 0, uvcoords);
opengl_bind_vertex_layout(vert_def);
glDrawArrays(GL_QUADS, 0, 4);
}
GL_state.Texture.SetActiveUnit(0);
GL_state.Texture.Disable();
// reset state
GL_state.DepthTest(depth);
GL_state.DepthMask(depth_mask);
GL_state.Lighting(light);
GL_state.Blend(blend);
GL_state.CullFace(cull);
}
// Reset the UV scale values
Scene_texture_u_scale = 1.0f;
Scene_texture_v_scale = 1.0f;
Scene_framebuffer_in_frame = false;
}
void gr_opengl_copy_effect_texture()
{
if ( !Scene_framebuffer_in_frame ) {
return;
}
glDrawBuffer(GL_COLOR_ATTACHMENT4_EXT);
vglBlitFramebufferEXT(0, 0, gr_screen.max_w, gr_screen.max_h, 0, 0, gr_screen.max_w, gr_screen.max_h, GL_COLOR_BUFFER_BIT, GL_NEAREST);
glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
}
void opengl_clear_deferred_buffers()
{
GLboolean depth = GL_state.DepthTest(GL_FALSE);
GLboolean depth_mask = GL_state.DepthMask(GL_FALSE);
GLboolean light = GL_state.Lighting(GL_FALSE);
GLboolean blend = GL_state.Blend(GL_FALSE);
GLboolean cull = GL_state.CullFace(GL_FALSE);
opengl_shader_set_current( gr_opengl_maybe_create_shader(SDR_TYPE_DEFERRED_CLEAR, 0) );
opengl_draw_textured_quad(-1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f);
opengl_shader_set_current();
GL_state.DepthTest(depth);
GL_state.DepthMask(depth_mask);
GL_state.Lighting(light);
GL_state.Blend(blend);
GL_state.CullFace(cull);
}
void gr_opengl_deferred_lighting_begin()
{
if (Use_GLSL < 2 || Cmdline_no_deferred_lighting)
return;
Deferred_lighting = true;
GLenum buffers[] = { GL_COLOR_ATTACHMENT0_EXT, GL_COLOR_ATTACHMENT1_EXT, GL_COLOR_ATTACHMENT2_EXT, GL_COLOR_ATTACHMENT3_EXT };
vglDrawBuffers(4, buffers);
}
void gr_opengl_deferred_lighting_end()
{
if(!Deferred_lighting)
return;
Deferred_lighting = false;
glDrawBuffer(GL_COLOR_ATTACHMENT0);
}
extern light Lights[MAX_LIGHTS];
extern int Num_lights;
extern float GL_light_color[];
extern float static_point_factor;
extern float static_light_factor;
extern float static_tube_factor;
void gr_opengl_deferred_lighting_finish()
{
if ( Use_GLSL < 2 || Cmdline_no_deferred_lighting ) {
return;
}
GL_state.SetAlphaBlendMode( ALPHA_BLEND_ADDITIVE);
gr_zbuffer_set(GR_ZBUFF_NONE);
//GL_state.DepthFunc(GL_GREATER);
//GL_state.DepthMask(GL_FALSE);
opengl_shader_set_current( gr_opengl_maybe_create_shader(SDR_TYPE_DEFERRED_LIGHTING, 0) );
GL_state.Texture.SetActiveUnit(0);
GL_state.Texture.SetTarget(GL_TEXTURE_2D);
GL_state.Texture.Enable(Scene_color_texture);
GL_state.Texture.SetActiveUnit(1);
GL_state.Texture.SetTarget(GL_TEXTURE_2D);
GL_state.Texture.Enable(Scene_normal_texture);
GL_state.Texture.SetActiveUnit(2);
GL_state.Texture.SetTarget(GL_TEXTURE_2D);
GL_state.Texture.Enable(Scene_position_texture);
GL_state.Texture.SetActiveUnit(3);
GL_state.Texture.SetTarget(GL_TEXTURE_2D);
GL_state.Texture.Enable(Scene_specular_texture);
vglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, Scene_luminance_texture, 0);
vglFramebufferRenderbufferEXT(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, Scene_stencil_buffer);
vglFramebufferRenderbufferEXT(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, Scene_stencil_buffer);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
light lights_copy[MAX_LIGHTS];
memcpy(lights_copy, Lights, MAX_LIGHTS * sizeof(light));
std::sort(lights_copy, lights_copy+Num_lights, light_compare_by_type);
glEnable(GL_STENCIL_TEST);
glStencilFunc(GL_NOTEQUAL, 1, 0xFF);
glStencilOp(GL_ZERO, GL_ZERO, GL_ZERO);
glStencilMask(0xFF);
for(int i = 0; i < Num_lights; ++i)
{
light *l = &lights_copy[i];
GL_state.Uniform.setUniformi( "lightType", 0 );
switch(l->type)
{
case LT_CONE:
GL_state.Uniform.setUniformi( "lightType", 2 );
GL_state.Uniform.setUniformi( "dualCone", l->dual_cone );
GL_state.Uniform.setUniformf( "coneAngle", l->cone_angle );
GL_state.Uniform.setUniformf( "coneInnerAngle", l->cone_inner_angle );
GL_state.Uniform.setUniform3f( "coneDir", l->vec2.xyz.x, l->vec2.xyz.y, l->vec2.xyz.z);
case LT_POINT:
GL_state.Uniform.setUniform3f( "diffuseLightColor", l->r * l->intensity * static_point_factor, l->g * l->intensity * static_point_factor, l->b * l->intensity * static_point_factor );
GL_state.Uniform.setUniform3f( "specLightColor", l->spec_r * l->intensity * static_point_factor, l->spec_g * l->intensity * static_point_factor, l->spec_b * l->intensity * static_point_factor );
GL_state.Uniform.setUniformf( "lightRadius", MAX(l->rada, l->radb) * 1.25f );
/*float dist;
vec3d a;
vm_vec_sub(&a, &Eye_position, &l->vec);
dist = vm_vec_mag(&a);*/
gr_opengl_draw_deferred_light_sphere(&l->vec, MAX(l->rada, l->radb) * 1.28f);
break;
case LT_TUBE:
GL_state.Uniform.setUniform3f( "diffuseLightColor", l->r * l->intensity * static_tube_factor, l->g * l->intensity * static_tube_factor, l->b * l->intensity * static_tube_factor );
GL_state.Uniform.setUniform3f( "specLightColor", l->spec_r * l->intensity * static_tube_factor, l->spec_g * l->intensity * static_tube_factor, l->spec_b * l->intensity * static_tube_factor );
GL_state.Uniform.setUniformf( "lightRadius", l->radb * 1.5f );
GL_state.Uniform.setUniformi( "lightType", 1 );
vec3d a, b;
matrix orient;
float length, dist;
vm_vec_sub(&a, &l->vec, &l->vec2);
vm_vector_2_matrix(&orient, &a, NULL, NULL);
length = vm_vec_mag(&a);
int pos = vm_vec_dist_to_line(&Eye_position, &l->vec, &l->vec2, &b, &dist);
if(pos == -1)
{
vm_vec_sub(&a, &Eye_position, &l->vec);
dist = vm_vec_mag(&a);
}
else if (pos == 1)
{
vm_vec_sub(&a, &Eye_position, &l->vec2);
dist = vm_vec_mag(&a);
}
glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
gr_opengl_draw_deferred_light_cylinder(&l->vec2, &orient, l->radb * 1.53f, length);
GL_state.Uniform.setUniformi( "lightType", 0 );
gr_opengl_draw_deferred_light_sphere(&l->vec, l->radb * 1.53f, false);
gr_opengl_draw_deferred_light_sphere(&l->vec2, l->radb * 1.53f, false);
glStencilOp(GL_ZERO, GL_ZERO, GL_ZERO);
break;
}
}
glStencilOp(GL_KEEP, GL_KEEP, GL_INCR);
glClear(GL_STENCIL_BUFFER_BIT);
glDisable(GL_STENCIL_TEST);
vglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, Scene_color_texture, 0);
vglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, Scene_depth_texture, 0);
vglFramebufferRenderbufferEXT(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
gr_end_view_matrix();
gr_end_proj_matrix();
GLboolean depth = GL_state.DepthTest(GL_FALSE);
GLboolean depth_mask = GL_state.DepthMask(GL_FALSE);
GLboolean light = GL_state.Lighting(GL_FALSE);
GLboolean blend = GL_state.Blend(GL_FALSE);
GLboolean cull = GL_state.CullFace(GL_FALSE);
GLfloat vertices[8] = {
0.0f, (float)gr_screen.max_h,
(float)gr_screen.max_w, (float)gr_screen.max_h,
(float)gr_screen.max_w, 0.0f,
0.0f, 0.0f
};
GLfloat uvcoords[8] = {
0.0f, 0.0f,
Scene_texture_u_scale, 0.0f,
Scene_texture_u_scale, Scene_texture_v_scale,
0.0f, Scene_texture_v_scale
};
opengl_shader_set_current();
GL_state.Array.BindArrayBuffer(0);
GL_state.Array.BindElementBuffer(0);
vertex_layout vert_def;
vert_def.add_vertex_component(vertex_format_data::POSITION2, 0, vertices);
vert_def.add_vertex_component(vertex_format_data::TEX_COORD, 0, uvcoords);
opengl_bind_vertex_layout(vert_def);
GL_state.Texture.DisableAll();
GL_state.Texture.SetActiveUnit(0);
GL_state.Texture.SetTarget(GL_TEXTURE_2D);
GL_state.Texture.Enable(Scene_luminance_texture);
GL_state.SetAlphaBlendMode( ALPHA_BLEND_ADDITIVE );
glDrawArrays(GL_QUADS, 0, 4);
gr_set_proj_matrix(Proj_fov, gr_screen.clip_aspect, Min_draw_distance, Max_draw_distance);
gr_set_view_matrix(&Eye_position, &Eye_matrix);
GL_state.Texture.DisableAll();
// reset state
GL_state.DepthTest(depth);
GL_state.DepthMask(depth_mask);
GL_state.Lighting(light);
GL_state.Blend(blend);
GL_state.CullFace(cull);
GL_state.SetAlphaBlendMode( ALPHA_BLEND_NONE );
gr_clear_states();
}
void gr_opengl_update_distortion()
{
GLboolean depth = GL_state.DepthTest(GL_FALSE);
GLboolean depth_mask = GL_state.DepthMask(GL_FALSE);
GLboolean light = GL_state.Lighting(GL_FALSE);
GLboolean blend = GL_state.Blend(GL_FALSE);
GLboolean cull = GL_state.CullFace(GL_FALSE);
opengl_shader_set_current();
vglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, Distortion_framebuffer);
vglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, Distortion_texture[!Distortion_switch], 0);
glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
glViewport(0,0,32,32);
GL_state.Texture.SetActiveUnit(0);
GL_state.Texture.SetTarget(GL_TEXTURE_2D);
GL_state.Texture.Enable(Distortion_texture[Distortion_switch]);
glClearColor(0.5f, 0.5f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
GL_state.Color(255, 255, 255, 255);
GLfloat texcoord[8] = {
0.0f, 0.0f,
0.96875f, 0.0f,
0.96875f, 1.0f,
0.0f, 1.0f
};
GLfloat vertices[8] = {
0.03f*(float)gr_screen.max_w,(float)gr_screen.max_h,
(float)gr_screen.max_w, (float)gr_screen.max_h,
(float)gr_screen.max_w, 0.0f,
0.03f*(float)gr_screen.max_w, 0.0f
};
GL_state.Array.BindArrayBuffer(0);
vertex_layout vert_def;
vert_def.add_vertex_component(vertex_format_data::POSITION2, 0, vertices);
vert_def.add_vertex_component(vertex_format_data::TEX_COORD, 0, texcoord);
opengl_bind_vertex_layout(vert_def);
glDrawArrays(GL_QUADS, 0, 4);
GL_state.Texture.Disable();
SCP_vector<ubyte> colours;
SCP_vector<GLfloat> distortion_vertex;
colours.reserve(33 * 4);
distortion_vertex.reserve(33 * 2);
for(int i = 0; i < 33; i++)
{
colours.push_back((ubyte) rand()%256);
colours.push_back((ubyte) rand()%256);
colours.push_back(255);
colours.push_back(255);
distortion_vertex.push_back(0.04f);
distortion_vertex.push_back((float)gr_screen.max_h*0.03125f*i);
}
vert_def = vertex_layout();
vert_def.add_vertex_component(vertex_format_data::POSITION2, 0, &distortion_vertex.front());
vert_def.add_vertex_component(vertex_format_data::COLOR4, 0, &colours.front());
opengl_bind_vertex_layout(vert_def);
glDrawArrays(GL_POINTS, 0, 33);
Distortion_switch = !Distortion_switch;
// reset state
vglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, Scene_framebuffer);
glViewport(0,0,gr_screen.max_w,gr_screen.max_h);
GL_state.DepthTest(depth);
GL_state.DepthMask(depth_mask);
GL_state.Lighting(light);
GL_state.Blend(blend);
GL_state.CullFace(cull);
}
void opengl_draw(vertex_layout vertex_binding, GLenum prim_type, int count, int vbuffer_handle)
{
}
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