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parallel-dc/core/rend/gl4/gles.cpp
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#include <math.h>
#include "gl4.h"
#include "rend/gles/glcache.h"
#include "rend/rend.h"
#include "rend/TexCache.h"
#include "rend/gles/postprocess.h"
gl4_ctx gl4;
gl4ShaderUniforms_t gl4ShaderUniforms;
#define FOG_CHANNEL "r"
#define FOG_IMG_TYPE GL_RED
//Fragment and vertex shaders code
static const char* VertexShaderSource = R"(#version 130
#define pp_Gouraud %d
#if pp_Gouraud == 0
#define INTERPOLATION flat
#else
#define INTERPOLATION smooth
#endif
/* Vertex constants*/
uniform highp vec4 scale;
uniform highp float extra_depth_scale;
/* Vertex input */
in highp vec4 in_pos;
in lowp vec4 in_base;
in lowp vec4 in_offs;
in mediump vec2 in_uv;
in lowp vec4 in_base1;
in lowp vec4 in_offs1;
in mediump vec2 in_uv1;
/* output */
INTERPOLATION out lowp vec4 vtx_base;
INTERPOLATION out lowp vec4 vtx_offs;
out mediump vec2 vtx_uv;
INTERPOLATION out lowp vec4 vtx_base1;
INTERPOLATION out lowp vec4 vtx_offs1;
out mediump vec2 vtx_uv1;
void main()
{
vtx_base=in_base;
vtx_offs=in_offs;
vtx_uv=in_uv;
vtx_base1 = in_base1;
vtx_offs1 = in_offs1;
vtx_uv1 = in_uv1;
vec4 vpos=in_pos;
vpos.w = extra_depth_scale / vpos.z;
vpos.z = vpos.w;
vpos.xy=vpos.xy*scale.xy-scale.zw;
vpos.xy*=vpos.w;
gl_Position = vpos;
}
)";
const char* gl4PixelPipelineShader = SHADER_HEADER
R"(
#define cp_AlphaTest %d
#define pp_ClipTestMode %d
#define pp_UseAlpha %d
#define pp_Texture %d
#define pp_IgnoreTexA %d
#define pp_ShadInstr %d
#define pp_Offset %d
#define pp_FogCtrl %d
#define pp_TwoVolumes %d
#define pp_Gouraud %d
#define pp_BumpMap %d
#define FogClamping %d
#define PASS %d
#define PI 3.1415926
#define PASS_DEPTH 0
#define PASS_COLOR 1
#define PASS_OIT 2
#if PASS == PASS_DEPTH || PASS == PASS_COLOR
out vec4 FragColor;
#endif
#if pp_TwoVolumes == 1
#define IF(x) if (x)
#else
#define IF(x)
#endif
#if pp_Gouraud == 0
#define INTERPOLATION flat
#else
#define INTERPOLATION smooth
#endif
/* Shader program params*/
uniform lowp float cp_AlphaTestValue;
uniform lowp vec4 pp_ClipTest;
uniform lowp vec3 sp_FOG_COL_RAM,sp_FOG_COL_VERT;
uniform highp float sp_FOG_DENSITY;
uniform highp float shade_scale_factor;
uniform sampler2D tex0, tex1;
layout(binding = 5) uniform sampler2D fog_table;
uniform int pp_Number;
uniform usampler2D shadow_stencil;
uniform sampler2D DepthTex;
uniform lowp float trilinear_alpha;
uniform lowp vec4 fog_clamp_min;
uniform lowp vec4 fog_clamp_max;
uniform ivec2 blend_mode[2];
#if pp_TwoVolumes == 1
uniform bool use_alpha[2];
uniform bool ignore_tex_alpha[2];
uniform int shading_instr[2];
uniform int fog_control[2];
#endif
/* Vertex input*/
INTERPOLATION in lowp vec4 vtx_base;
INTERPOLATION in lowp vec4 vtx_offs;
in mediump vec2 vtx_uv;
INTERPOLATION in lowp vec4 vtx_base1;
INTERPOLATION in lowp vec4 vtx_offs1;
in mediump vec2 vtx_uv1;
lowp float fog_mode2(highp float w)
{
highp float z = clamp(w * sp_FOG_DENSITY, 1.0, 255.9999);
uint i = uint(floor(log2(z)));
highp float m = z * 16 / pow(2, i) - 16;
float idx = floor(m) + i * 16 + 0.5;
vec4 fog_coef = texture(fog_table, vec2(idx / 128, 0.75 - (m - floor(m)) / 2));
return fog_coef.r;
}
highp vec4 fog_clamp(highp vec4 col)
{
#if FogClamping == 1
return clamp(col, fog_clamp_min, fog_clamp_max);
#else
return col;
#endif
}
void main()
{
setFragDepth();
#if PASS == PASS_OIT
// Manual depth testing
highp float frontDepth = texture(DepthTex, gl_FragCoord.xy / textureSize(DepthTex, 0)).r;
if (gl_FragDepth < frontDepth)
discard;
#endif
// Clip outside the box
#if pp_ClipTestMode==1
if (gl_FragCoord.x < pp_ClipTest.x || gl_FragCoord.x > pp_ClipTest.z
|| gl_FragCoord.y < pp_ClipTest.y || gl_FragCoord.y > pp_ClipTest.w)
discard;
#endif
// Clip inside the box
#if pp_ClipTestMode==-1
if (gl_FragCoord.x >= pp_ClipTest.x && gl_FragCoord.x <= pp_ClipTest.z
&& gl_FragCoord.y >= pp_ClipTest.y && gl_FragCoord.y <= pp_ClipTest.w)
discard;
#endif
highp vec4 color = vtx_base;
lowp vec4 offset = vtx_offs;
mediump vec2 uv = vtx_uv;
bool area1 = false;
ivec2 cur_blend_mode = blend_mode[0];
#if pp_TwoVolumes == 1
bool cur_use_alpha = use_alpha[0];
bool cur_ignore_tex_alpha = ignore_tex_alpha[0];
int cur_shading_instr = shading_instr[0];
int cur_fog_control = fog_control[0];
#if PASS == PASS_COLOR
uvec4 stencil = texture(shadow_stencil, gl_FragCoord.xy / textureSize(shadow_stencil, 0));
if (stencil.r == 0x81u) {
color = vtx_base1;
offset = vtx_offs1;
uv = vtx_uv1;
area1 = true;
cur_blend_mode = blend_mode[1];
cur_use_alpha = use_alpha[1];
cur_ignore_tex_alpha = ignore_tex_alpha[1];
cur_shading_instr = shading_instr[1];
cur_fog_control = fog_control[1];
}
#endif
#endif
#if pp_UseAlpha==0 || pp_TwoVolumes == 1
IF(!cur_use_alpha)
color.a=1.0;
#endif
#if pp_FogCtrl==3 || pp_TwoVolumes == 1 // LUT Mode 2
IF(cur_fog_control == 3)
color=vec4(sp_FOG_COL_RAM.rgb,fog_mode2(gl_FragCoord.w));
#endif
#if pp_Texture==1
{
highp vec4 texcol;
if (area1)
texcol = texture(tex1, uv);
else
texcol = texture(tex0, uv);
#if pp_BumpMap == 1
float s = PI / 2.0 * (texcol.a * 15.0 * 16.0 + texcol.r * 15.0) / 255.0;
float r = 2.0 * PI * (texcol.g * 15.0 * 16.0 + texcol.b * 15.0) / 255.0;
texcol.a = clamp(vtx_offs.a + vtx_offs.r * sin(s) + vtx_offs.g * cos(s) * cos(r - 2.0 * PI * vtx_offs.b), 0.0, 1.0);
texcol.rgb = vec3(1.0, 1.0, 1.0);
#else
#if pp_IgnoreTexA==1 || pp_TwoVolumes == 1
IF(cur_ignore_tex_alpha)
texcol.a=1.0;
#endif
#if cp_AlphaTest == 1
if (cp_AlphaTestValue>texcol.a) discard;
#endif
#endif
#if pp_ShadInstr==0 || pp_TwoVolumes == 1 // DECAL
IF(cur_shading_instr == 0)
{
color=texcol;
}
#endif
#if pp_ShadInstr==1 || pp_TwoVolumes == 1 // MODULATE
IF(cur_shading_instr == 1)
{
color.rgb*=texcol.rgb;
color.a=texcol.a;
}
#endif
#if pp_ShadInstr==2 || pp_TwoVolumes == 1 // DECAL ALPHA
IF(cur_shading_instr == 2)
{
color.rgb=mix(color.rgb,texcol.rgb,texcol.a);
}
#endif
#if pp_ShadInstr==3 || pp_TwoVolumes == 1 // MODULATE ALPHA
IF(cur_shading_instr == 3)
{
color*=texcol;
}
#endif
#if pp_Offset==1 && pp_BumpMap == 0
{
color.rgb += offset.rgb;
}
#endif
}
#endif
#if PASS == PASS_COLOR && pp_TwoVolumes == 0
uvec4 stencil = texture(shadow_stencil, gl_FragCoord.xy / textureSize(shadow_stencil, 0));
if (stencil.r == 0x81u)
color.rgb *= shade_scale_factor;
#endif
color = fog_clamp(color);
#if pp_FogCtrl==0 || pp_TwoVolumes == 1 // LUT
IF(cur_fog_control == 0)
{
color.rgb=mix(color.rgb,sp_FOG_COL_RAM.rgb,fog_mode2(gl_FragCoord.w));
}
#endif
#if pp_Offset==1 && pp_BumpMap == 0 && (pp_FogCtrl == 1 || pp_TwoVolumes == 1) // Per vertex
IF(cur_fog_control == 1)
{
color.rgb=mix(color.rgb, sp_FOG_COL_VERT.rgb, offset.a);
}
#endif
color *= trilinear_alpha;
#if cp_AlphaTest == 1
color.a=1.0;
#endif
//color.rgb=vec3(gl_FragCoord.w * sp_FOG_DENSITY / 128.0);
#if PASS == PASS_COLOR
FragColor = color;
#elif PASS == PASS_OIT
// Discard as many pixels as possible
switch (cur_blend_mode.y) // DST
{
case ONE:
switch (cur_blend_mode.x) // SRC
{
case ZERO:
discard;
case ONE:
case OTHER_COLOR:
case INVERSE_OTHER_COLOR:
if (color == vec4(0.0))
discard;
break;
case SRC_ALPHA:
if (color.a == 0.0 || color.rgb == vec3(0.0))
discard;
break;
case INVERSE_SRC_ALPHA:
if (color.a == 1.0 || color.rgb == vec3(0.0))
discard;
break;
}
break;
case OTHER_COLOR:
if (cur_blend_mode.x == ZERO && color == vec4(1.0))
discard;
break;
case INVERSE_OTHER_COLOR:
if (cur_blend_mode.x <= SRC_ALPHA && color == vec4(0.0))
discard;
break;
case SRC_ALPHA:
if ((cur_blend_mode.x == ZERO || cur_blend_mode.x == INVERSE_SRC_ALPHA) && color.a == 1.0)
discard;
break;
case INVERSE_SRC_ALPHA:
switch (cur_blend_mode.x) // SRC
{
case ZERO:
case SRC_ALPHA:
if (color.a == 0.0)
discard;
break;
case ONE:
case OTHER_COLOR:
case INVERSE_OTHER_COLOR:
if (color == vec4(0.0))
discard;
break;
}
break;
}
ivec2 coords = ivec2(gl_FragCoord.xy);
uint idx = getNextPixelIndex();
Pixel pixel;
pixel.color = color;
pixel.depth = gl_FragDepth;
pixel.seq_num = uint(pp_Number);
pixel.next = imageAtomicExchange(abufferPointerImg, coords, idx);
pixels[idx] = pixel;
discard;
#endif
}
)";
static const char* ModifierVolumeShader = SHADER_HEADER
R"(
void main()
{
setFragDepth();
}
)";
int max_image_width;
int max_image_height;
extern GLuint fogTextureId;
bool gl4CompilePipelineShader(gl4PipelineShader *s, const char *pixel_source /* = PixelPipelineShader */, const char *vertex_source /* = NULL */)
{
char vshader[16384];
sprintf(vshader, vertex_source == NULL ? VertexShaderSource : vertex_source, s->pp_Gouraud);
char pshader[16384];
sprintf(pshader, pixel_source,
s->cp_AlphaTest,s->pp_ClipTestMode,s->pp_UseAlpha,
s->pp_Texture,s->pp_IgnoreTexA,s->pp_ShadInstr,s->pp_Offset,s->pp_FogCtrl, s->pp_TwoVolumes, s->pp_Gouraud, s->pp_BumpMap, s->fog_clamping, (int)s->pass);
s->program = gl_CompileAndLink(vshader, pshader);
//setup texture 0 as the input for the shader
GLint gu = glGetUniformLocation(s->program, "tex0");
if (s->pp_Texture == 1 && gu != -1)
glUniform1i(gu,0);
// Setup texture 1 as the input for area 1 in two volume mode
gu = glGetUniformLocation(s->program, "tex1");
if (s->pp_Texture == 1 && gu != -1)
glUniform1i(gu, 1);
//get the uniform locations
s->scale = glGetUniformLocation(s->program, "scale");
s->extra_depth_scale = glGetUniformLocation(s->program, "extra_depth_scale");
s->pp_ClipTest = glGetUniformLocation(s->program, "pp_ClipTest");
s->sp_FOG_DENSITY = glGetUniformLocation(s->program, "sp_FOG_DENSITY");
s->cp_AlphaTestValue = glGetUniformLocation(s->program, "cp_AlphaTestValue");
//FOG_COL_RAM,FOG_COL_VERT,FOG_DENSITY;
if (s->pp_FogCtrl==1 && s->pp_Texture==1)
s->sp_FOG_COL_VERT = glGetUniformLocation(s->program, "sp_FOG_COL_VERT");
else
s->sp_FOG_COL_VERT = -1;
if (s->pp_FogCtrl==0 || s->pp_FogCtrl==3)
{
s->sp_FOG_COL_RAM=glGetUniformLocation(s->program, "sp_FOG_COL_RAM");
}
else
{
s->sp_FOG_COL_RAM=-1;
}
s->shade_scale_factor = glGetUniformLocation(s->program, "shade_scale_factor");
// Use texture 1 for depth texture
gu = glGetUniformLocation(s->program, "DepthTex");
if (gu != -1)
glUniform1i(gu, 2); // GL_TEXTURE2
s->trilinear_alpha = glGetUniformLocation(s->program, "trilinear_alpha");
if (s->fog_clamping)
{
s->fog_clamp_min = glGetUniformLocation(s->program, "fog_clamp_min");
s->fog_clamp_max = glGetUniformLocation(s->program, "fog_clamp_max");
}
else
{
s->fog_clamp_min = -1;
s->fog_clamp_max = -1;
}
// Shadow stencil for OP/PT rendering pass
gu = glGetUniformLocation(s->program, "shadow_stencil");
if (gu != -1)
glUniform1i(gu, 3); // GL_TEXTURE3
s->pp_Number = glGetUniformLocation(s->program, "pp_Number");
s->blend_mode = glGetUniformLocation(s->program, "blend_mode");
s->use_alpha = glGetUniformLocation(s->program, "use_alpha");
s->ignore_tex_alpha = glGetUniformLocation(s->program, "ignore_tex_alpha");
s->shading_instr = glGetUniformLocation(s->program, "shading_instr");
s->fog_control = glGetUniformLocation(s->program, "fog_control");
return glIsProgram(s->program)==GL_TRUE;
}
static void gl_term(void)
{
glDeleteProgram(gl4.modvol_shader.program);
glDeleteVertexArrays(1, &gl4.vbo.main_vao);
glDeleteVertexArrays(1, &gl4.vbo.modvol_vao);
glDeleteBuffers(1, &gl4.vbo.geometry);
glDeleteBuffers(1, &gl4.vbo.modvols);
glDeleteBuffers(1, &gl4.vbo.idxs);
glDeleteBuffers(1, &gl4.vbo.idxs2);
glDeleteBuffers(1, &gl4.vbo.tr_poly_params);
for (auto it = gl4.shaders.begin(); it != gl4.shaders.end(); it++)
{
if (it->second.program != 0)
glDeleteProgram(it->second.program);
}
gl4.shaders.clear();
glDeleteTextures(1, &fbTextureId);
fbTextureId = 0;
glDeleteTextures(1, &fogTextureId);
fogTextureId = 0;
}
static bool gl_create_resources(void)
{
// Create VAOs
glGenVertexArrays(1, &gl4.vbo.main_vao);
glGenVertexArrays(1, &gl4.vbo.modvol_vao);
// Create VBOs
glGenBuffers(1, &gl4.vbo.geometry);
glGenBuffers(1, &gl4.vbo.modvols);
glGenBuffers(1, &gl4.vbo.idxs);
glGenBuffers(1, &gl4.vbo.idxs2);
gl4SetupMainVBO();
gl4SetupModvolVBO();
char vshader[16384];
sprintf(vshader, VertexShaderSource, 1);
gl4.modvol_shader.program=gl_CompileAndLink(vshader, ModifierVolumeShader);
gl4.modvol_shader.scale = glGetUniformLocation(gl4.modvol_shader.program, "scale");
gl4.modvol_shader.extra_depth_scale = glGetUniformLocation(gl4.modvol_shader.program, "extra_depth_scale");
// Create the buffer for Translucent poly params
glGenBuffers(1, &gl4.vbo.tr_poly_params);
// Bind it
glBindBuffer(GL_SHADER_STORAGE_BUFFER, gl4.vbo.tr_poly_params);
// Declare storage
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, gl4.vbo.tr_poly_params);
glCheck();
return true;
}
extern void initABuffer();
void reshapeABuffer(int width, int height);
extern void gl4CreateTextures(int width, int height);
static void resize(int w, int h)
{
if (w > max_image_width || h > max_image_height || stencilTexId == 0)
{
if (w > max_image_width)
max_image_width = w;
if (h > max_image_height)
max_image_height = h;
if (stencilTexId != 0)
{
glcache.DeleteTextures(1, &stencilTexId);
stencilTexId = 0;
}
if (depthTexId != 0)
{
glcache.DeleteTextures(1, &depthTexId);
depthTexId = 0;
}
if (opaqueTexId != 0)
{
glcache.DeleteTextures(1, &opaqueTexId);
opaqueTexId = 0;
}
if (depthSaveTexId != 0)
{
glcache.DeleteTextures(1, &depthSaveTexId);
depthSaveTexId = 0;
}
gl4CreateTextures(max_image_width, max_image_height);
reshapeABuffer(max_image_width, max_image_height);
}
}
static bool RenderFrame(void)
{
int vmu_screen_number = 0 ;
int lightgun_port = 0 ;
DoCleanup();
bool is_rtt=pvrrc.isRTT;
//if (FrameCount&7) return;
//these should be adjusted based on the current PVR scaling etc params
float dc_width=640;
float dc_height=480;
if (!is_rtt)
{
gcflip=0;
}
else
{
gcflip=1;
//For some reason this produces wrong results
//so for now its hacked based like on the d3d code
/*
u32 pvr_stride=(FB_W_LINESTRIDE.stride)*8;
*/
dc_width = pvrrc.fb_X_CLIP.max - pvrrc.fb_X_CLIP.min + 1;
dc_height = pvrrc.fb_Y_CLIP.max - pvrrc.fb_Y_CLIP.min + 1;
}
scale_x = 1;
scale_y = 1;
float scissoring_scale_x = 1;
if (!is_rtt && !pvrrc.isRenderFramebuffer)
{
scale_x=fb_scale_x;
scale_y=fb_scale_y;
if (SCALER_CTL.interlace == 0 && SCALER_CTL.vscalefactor > 0x400)
scale_y *= roundf((float)SCALER_CTL.vscalefactor / 0x400);
//work out scaling parameters !
//Pixel doubling is on VO, so it does not affect any pixel operations
//A second scaling is used here for scissoring
if (VO_CONTROL.pixel_double)
{
scissoring_scale_x = 0.5f;
scale_x *= 0.5f;
}
if (SCALER_CTL.hscale)
{
scissoring_scale_x /= 2;
scale_x*=2;
}
}
dc_width *= scale_x;
dc_height *= scale_y;
/*
Handle Dc to screen scaling
*/
float dc2s_scale_h = is_rtt ? (screen_width / dc_width) : (screen_height/480.0);
float ds2s_offs_x = is_rtt ? 0 : ((screen_width-dc2s_scale_h*640)/2);
//-1 -> too much to left
gl4ShaderUniforms.scale_coefs[0] = 2.0f / (screen_width / dc2s_scale_h * scale_x);
gl4ShaderUniforms.scale_coefs[1] = (is_rtt ? 2 : -2) / dc_height;
gl4ShaderUniforms.scale_coefs[2] = 1 - 2 * ds2s_offs_x / screen_width;
gl4ShaderUniforms.scale_coefs[3] = is_rtt ? 1 : -1;
int rendering_width;
int rendering_height;
if (is_rtt)
{
int scaling = settings.rend.RenderToTextureBuffer ? 1 : settings.rend.RenderToTextureUpscale;
resize(dc_width * scaling, dc_height * scaling);
rendering_width = dc_width * scaling;
rendering_height = dc_height * scaling;
}
else
{
rendering_width = screen_width;
rendering_height = screen_height;
}
resize(rendering_width, rendering_height);
gl4ShaderUniforms.extra_depth_scale = settings.rend.ExtraDepthScale;
DEBUG_LOG(RENDERER, "scale: %f, %f, %f, %f", ShaderUniforms.scale_coefs[0], ShaderUniforms.scale_coefs[1], ShaderUniforms.scale_coefs[2], ShaderUniforms.scale_coefs[3]);
//VERT and RAM fog color constants
u8* fog_colvert_bgra=(u8*)&FOG_COL_VERT;
u8* fog_colram_bgra=(u8*)&FOG_COL_RAM;
gl4ShaderUniforms.ps_FOG_COL_VERT[0]=fog_colvert_bgra[2]/255.0f;
gl4ShaderUniforms.ps_FOG_COL_VERT[1]=fog_colvert_bgra[1]/255.0f;
gl4ShaderUniforms.ps_FOG_COL_VERT[2]=fog_colvert_bgra[0]/255.0f;
gl4ShaderUniforms.ps_FOG_COL_RAM[0]=fog_colram_bgra [2]/255.0f;
gl4ShaderUniforms.ps_FOG_COL_RAM[1]=fog_colram_bgra [1]/255.0f;
gl4ShaderUniforms.ps_FOG_COL_RAM[2]=fog_colram_bgra [0]/255.0f;
//Fog density constant
u8* fog_density=(u8*)&FOG_DENSITY;
float fog_den_mant=fog_density[1]/128.0f; //bit 7 -> x. bit, so [6:0] -> fraction -> /128
s32 fog_den_exp=(s8)fog_density[0];
gl4ShaderUniforms.fog_den_float = fog_den_mant * powf(2.0f,fog_den_exp) * settings.rend.ExtraDepthScale;
gl4ShaderUniforms.fog_clamp_min[0] = ((pvrrc.fog_clamp_min >> 16) & 0xFF) / 255.0f;
gl4ShaderUniforms.fog_clamp_min[1] = ((pvrrc.fog_clamp_min >> 8) & 0xFF) / 255.0f;
gl4ShaderUniforms.fog_clamp_min[2] = ((pvrrc.fog_clamp_min >> 0) & 0xFF) / 255.0f;
gl4ShaderUniforms.fog_clamp_min[3] = ((pvrrc.fog_clamp_min >> 24) & 0xFF) / 255.0f;
gl4ShaderUniforms.fog_clamp_max[0] = ((pvrrc.fog_clamp_max >> 16) & 0xFF) / 255.0f;
gl4ShaderUniforms.fog_clamp_max[1] = ((pvrrc.fog_clamp_max >> 8) & 0xFF) / 255.0f;
gl4ShaderUniforms.fog_clamp_max[2] = ((pvrrc.fog_clamp_max >> 0) & 0xFF) / 255.0f;
gl4ShaderUniforms.fog_clamp_max[3] = ((pvrrc.fog_clamp_max >> 24) & 0xFF) / 255.0f;
if (fog_needs_update)
{
fog_needs_update=false;
UpdateFogTexture((u8 *)FOG_TABLE, GL_TEXTURE5, GL_RED);
}
glcache.UseProgram(gl4.modvol_shader.program);
glUniform4fv(gl4.modvol_shader.scale, 1, gl4ShaderUniforms.scale_coefs);
glUniform1f(gl4.modvol_shader.extra_depth_scale, gl4ShaderUniforms.extra_depth_scale);
gl4ShaderUniforms.PT_ALPHA=(PT_ALPHA_REF&0xFF)/255.0f;
GLuint output_fbo;
//setup render target first
if (is_rtt)
{
GLuint channels,format;
switch(FB_W_CTRL.fb_packmode)
{
case 0: //0x0 0555 KRGB 16 bit (default) Bit 15 is the value of fb_kval[7].
channels=GL_RGBA;
format=GL_UNSIGNED_BYTE;
break;
case 1: //0x1 565 RGB 16 bit
channels=GL_RGB;
format=GL_UNSIGNED_SHORT_5_6_5;
break;
case 2: //0x2 4444 ARGB 16 bit
channels=GL_RGBA;
format=GL_UNSIGNED_BYTE;
break;
case 3://0x3 1555 ARGB 16 bit The alpha value is determined by comparison with the value of fb_alpha_threshold.
channels=GL_RGBA;
format=GL_UNSIGNED_BYTE;
break;
case 4: //0x4 888 RGB 24 bit packed
case 5: //0x5 0888 KRGB 32 bit K is the value of fk_kval.
case 6: //0x6 8888 ARGB 32 bit
WARN_LOG(RENDERER, "Unsupported render to texture format: %d", FB_W_CTRL.fb_packmode);
return false;
case 7: //7 invalid
die("7 is not valid");
break;
}
DEBUG_LOG(RENDERER, "RTT packmode=%d stride=%d - %d,%d -> %d,%d", FB_W_CTRL.fb_packmode, FB_W_LINESTRIDE.stride * 8,
FB_X_CLIP.min, FB_Y_CLIP.min, FB_X_CLIP.max, FB_Y_CLIP.max);
output_fbo = gl4BindRTT(FB_W_SOF1 & VRAM_MASK, dc_width, dc_height, channels, format);
}
else
{
glViewport(0, 0, screen_width, screen_height);
output_fbo = hw_render.get_current_framebuffer();
}
glcache.Disable(GL_SCISSOR_TEST);
//move vertex to gpu
if (!pvrrc.isRenderFramebuffer)
{
//Main VBO
glBindVertexArray(gl4.vbo.main_vao);
glBindBuffer(GL_ARRAY_BUFFER, gl4.vbo.geometry); glCheck();
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, gl4.vbo.idxs); glCheck();
glBufferData(GL_ARRAY_BUFFER,pvrrc.verts.bytes(),pvrrc.verts.head(),GL_STREAM_DRAW); glCheck();
glBufferData(GL_ELEMENT_ARRAY_BUFFER,pvrrc.idx.bytes(),pvrrc.idx.head(),GL_STREAM_DRAW); glCheck();
//Modvol VBO
if (pvrrc.modtrig.used())
{
glBindVertexArray(gl4.vbo.modvol_vao);
glBindBuffer(GL_ARRAY_BUFFER, gl4.vbo.modvols); glCheck();
glBufferData(GL_ARRAY_BUFFER,pvrrc.modtrig.bytes(),pvrrc.modtrig.head(),GL_STREAM_DRAW); glCheck();
}
// TR PolyParam data
glBindBuffer(GL_SHADER_STORAGE_BUFFER, gl4.vbo.tr_poly_params);
glBufferData(GL_SHADER_STORAGE_BUFFER, sizeof(struct PolyParam) * pvrrc.global_param_tr.used(), pvrrc.global_param_tr.head(), GL_STATIC_DRAW);
glCheck();
//not all scaling affects pixel operations, scale to adjust for that
scale_x *= scissoring_scale_x;
#if 0
//handy to debug really stupid render-not-working issues ...
DEBUG_LOG(RENDERER, "SS: %dx%d", screen_width, screen_height);
DEBUG_LOG(RENDERER, "SCI: %d, %f", pvrrc.fb_X_CLIP.max, dc2s_scale_h);
DEBUG_LOG(RENDERER, "SCI: %f, %f, %f, %f", offs_x+pvrrc.fb_X_CLIP.min/scale_x,(pvrrc.fb_Y_CLIP.min/scale_y)*dc2s_scale_h,(pvrrc.fb_X_CLIP.max-pvrrc.fb_X_CLIP.min+1)/scale_x*dc2s_scale_h,(pvrrc.fb_Y_CLIP.max-pvrrc.fb_Y_CLIP.min+1)/scale_y*dc2s_scale_h);
#endif
bool wide_screen_on = !is_rtt && settings.rend.WideScreen
&& pvrrc.fb_X_CLIP.min == 0
&& lroundf((pvrrc.fb_X_CLIP.max + 1) / scale_x) == 640L
&& pvrrc.fb_Y_CLIP.min == 0
&& lroundf((pvrrc.fb_Y_CLIP.max + 1) / scale_y) == 480L;
if (!wide_screen_on)
{
float width = (pvrrc.fb_X_CLIP.max - pvrrc.fb_X_CLIP.min + 1) / scale_x;
float height = (pvrrc.fb_Y_CLIP.max - pvrrc.fb_Y_CLIP.min + 1) / scale_y;
float min_x = pvrrc.fb_X_CLIP.min / scale_x;
float min_y = pvrrc.fb_Y_CLIP.min / scale_y;
if (!is_rtt)
{
if (SCALER_CTL.interlace && SCALER_CTL.vscalefactor > 0x400)
{
// Clipping is done after scaling/filtering so account for that if enabled
height *= (float)SCALER_CTL.vscalefactor / 0x400;
min_y *= (float)SCALER_CTL.vscalefactor / 0x400;
}
// Add x offset for aspect ratio > 4/3
min_x = min_x * dc2s_scale_h + ds2s_offs_x;
// Invert y coordinates when rendering to screen
min_y = screen_height - (min_y + height) * dc2s_scale_h;
width *= dc2s_scale_h;
height *= dc2s_scale_h;
if (ds2s_offs_x > 0)
{
float rounded_offs_x = ds2s_offs_x + 0.5f;
glcache.ClearColor(0.f, 0.f, 0.f, 0.f);
glcache.Enable(GL_SCISSOR_TEST);
glScissor(0, 0, rounded_offs_x, screen_height);
glClear(GL_COLOR_BUFFER_BIT);
glScissor(screen_width - rounded_offs_x, 0, rounded_offs_x, screen_height);
glClear(GL_COLOR_BUFFER_BIT);
}
}
else if (settings.rend.RenderToTextureUpscale > 1 && !settings.rend.RenderToTextureBuffer)
{
min_x *= settings.rend.RenderToTextureUpscale;
min_y *= settings.rend.RenderToTextureUpscale;
width *= settings.rend.RenderToTextureUpscale;
height *= settings.rend.RenderToTextureUpscale;
}
glScissor((GLint)lroundf(min_x), (GLint)lroundf(min_y), (GLsizei)lroundf(width), (GLsizei)lroundf(height));
glcache.Enable(GL_SCISSOR_TEST);
}
//restore scale_x
scale_x /= scissoring_scale_x;
if (settings.rend.PowerVR2Filter && !is_rtt)
{
gl4DrawStrips(postProcessor.GetFramebuffer(), rendering_width, rendering_height);
postProcessor.Render(output_fbo);
}
else
gl4DrawStrips(output_fbo, rendering_width, rendering_height);
}
else
{
glBindFramebuffer(GL_FRAMEBUFFER, output_fbo);
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
glcache.ClearColor(0.f, 0.f, 0.f, 0.f);
glClear(GL_COLOR_BUFFER_BIT);
gl4DrawFramebuffer(dc_width, dc_height);
}
if (!is_rtt)
{
if (settings.System == DC_PLATFORM_DREAMCAST)
{
for ( vmu_screen_number = 0 ; vmu_screen_number < 4 ; vmu_screen_number++)
if ( vmu_screen_params[vmu_screen_number].vmu_screen_display )
gl4DrawVmuTexture(vmu_screen_number);
}
for ( lightgun_port = 0 ; lightgun_port < 4 ; lightgun_port++)
gl4DrawGunCrosshair(lightgun_port);
}
KillTex = false;
if (is_rtt)
ReadRTTBuffer();
glBindVertexArray(0);
return !is_rtt;
}
void termABuffer();
void gl_DebugOutput(GLenum source,
GLenum type,
GLuint id,
GLenum severity,
GLsizei length,
const GLchar *message,
void *userParam)
{
// ignore non-significant error/warning codes
if(id == 131169 || id == 131185 || id == 131218 || id == 131204) return;
if (id == 131186)
// Warning when fetching the atomic_uint pixel count
return;
printf("OpenGL Debug message (%d): %s\n", id, message);
switch (source)
{
case GL_DEBUG_SOURCE_API: printf("Source: API"); break;
case GL_DEBUG_SOURCE_WINDOW_SYSTEM: printf("Source: Window System"); break;
case GL_DEBUG_SOURCE_SHADER_COMPILER: printf("Source: Shader Compiler"); break;
case GL_DEBUG_SOURCE_THIRD_PARTY: printf("Source: Third Party"); break;
case GL_DEBUG_SOURCE_APPLICATION: printf("Source: Application"); break;
case GL_DEBUG_SOURCE_OTHER: printf("Source: Other"); break;
}
printf(" ");
switch (type)
{
case GL_DEBUG_TYPE_ERROR: printf("Type: Error"); break;
case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR: printf("Type: Deprecated Behaviour"); break;
case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR: printf("Type: Undefined Behaviour"); break;
case GL_DEBUG_TYPE_PORTABILITY: printf("Type: Portability"); break;
case GL_DEBUG_TYPE_PERFORMANCE: printf("Type: Performance"); break;
case GL_DEBUG_TYPE_MARKER: printf("Type: Marker"); break;
case GL_DEBUG_TYPE_PUSH_GROUP: printf("Type: Push Group"); break;
case GL_DEBUG_TYPE_POP_GROUP: printf("Type: Pop Group"); break;
case GL_DEBUG_TYPE_OTHER: printf("Type: Other"); break;
}
printf(" ");
switch (severity)
{
case GL_DEBUG_SEVERITY_HIGH: printf("Severity: high"); break;
case GL_DEBUG_SEVERITY_MEDIUM: printf("Severity: medium"); break;
case GL_DEBUG_SEVERITY_LOW: printf("Severity: low"); break;
case GL_DEBUG_SEVERITY_NOTIFICATION: printf("Severity: notification"); break;
};
printf("\n");
}
void reshapeABuffer(int w, int h);
struct gl4rend : Renderer
{
bool Init() override
{
findGLVersion();
if (gl.gl_major < 4 || (gl.gl_major == 4 && gl.gl_minor < 3))
{
WARN_LOG(RENDERER, "Warning: OpenGL %d.%d doesn't support per-pixel sorting. 4.3 required", gl.gl_major, gl.gl_minor);
return false;
}
if (!gl_create_resources())
return false;
glcache.DisableCache();
// glEnable(GL_DEBUG_OUTPUT);
// glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
// glDebugMessageCallback(gl_DebugOutput, NULL);
// glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, NULL, GL_TRUE);
initABuffer();
#ifdef HAVE_TEXUPSCALE
if (settings.rend.TextureUpscale > 1)
{
// Trick to preload the tables used by xBRZ
u32 src[] { 0x11111111, 0x22222222, 0x33333333, 0x44444444 };
u32 dst[16];
UpscalexBRZ(2, src, dst, 2, 2, false);
}
#endif
fog_needs_update = true;
TexCache.Clear();
if (settings.rend.PowerVR2Filter)
postProcessor.Init();
return true;
}
void Resize(int w, int h) override
{
screen_width=w;
screen_height=h;
resize(w, h);
}
void Term() override
{
postProcessor.Term();
glcache.DeleteTextures(ARRAY_SIZE(vmuTextureId), vmuTextureId);
memset(vmuTextureId, 0, sizeof(vmuTextureId));
glcache.DeleteTextures(ARRAY_SIZE(lightgunTextureId), lightgunTextureId);
memset(lightgunTextureId, 0, sizeof(lightgunTextureId));
termABuffer();
if (stencilTexId != 0)
{
glcache.DeleteTextures(1, &stencilTexId);
stencilTexId = 0;
}
if (depthTexId != 0)
{
glcache.DeleteTextures(1, &depthTexId);
depthTexId = 0;
}
if (opaqueTexId != 0)
{
glcache.DeleteTextures(1, &opaqueTexId);
opaqueTexId = 0;
}
if (depthSaveTexId != 0)
{
glcache.DeleteTextures(1, &depthSaveTexId);
depthSaveTexId = 0;
}
if (geom_fbo != 0)
{
glDeleteFramebuffers(1, &geom_fbo);
geom_fbo = 0;
}
if (texSamplers[0] != 0)
{
glDeleteSamplers(2, texSamplers);
texSamplers[0] = texSamplers[1] = 0;
}
if (depth_fbo != 0)
{
glDeleteFramebuffers(1, &depth_fbo);
depth_fbo = 0;
}
TexCache.Clear();
gl_term();
}
bool Process(TA_context* ctx) override
{
#if !defined(TARGET_NO_THREADS)
if (!settings.rend.ThreadedRendering)
#endif
glsm_ctl(GLSM_CTL_STATE_BIND, NULL);
return ProcessFrame(ctx);
}
bool Render() override
{
bool ret = RenderFrame();
#if !defined(TARGET_NO_THREADS)
if (!settings.rend.ThreadedRendering)
#endif
glsm_ctl(GLSM_CTL_STATE_UNBIND, NULL);
return ret;
}
void Present() override
{
co_dc_yield();
}
virtual u64 GetTexture(TSP tsp, TCW tcw) override
{
return gl_GetTexture(tsp, tcw);
}
};
Renderer* rend_GL4() { return new gl4rend(); }
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