RetroArch/gfx/drivers_display/gfx_display_gl1.c
Francisco José García García f976078ef2 [VITA] GL fixes
2020-05-31 17:10:26 +02:00

245 lines
6.1 KiB
C

/* RetroArch - A frontend for libretro.
* Copyright (C) 2011-2017 - Daniel De Matteis
* Copyright (C) 2016-2019 - Brad Parker
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <retro_miscellaneous.h>
#ifdef HAVE_CONFIG_H
#include "../../config.h"
#endif
#include "../../retroarch.h"
#include "../font_driver.h"
#include "../common/gl1_common.h"
#include "../gfx_display.h"
static const GLfloat gl1_menu_vertexes[] = {
0, 0,
1, 0,
0, 1,
1, 1
};
static const GLfloat gl1_menu_tex_coords[] = {
0, 1,
1, 1,
0, 0,
1, 0
};
static const float *gfx_display_gl1_get_default_vertices(void)
{
return &gl1_menu_vertexes[0];
}
static const float *gfx_display_gl1_get_default_tex_coords(void)
{
return &gl1_menu_tex_coords[0];
}
static void *gfx_display_gl1_get_default_mvp(void *data)
{
gl1_t *gl1 = (gl1_t*)data;
if (!gl1)
return NULL;
return &gl1->mvp_no_rot;
}
static GLenum gfx_display_prim_to_gl1_enum(
enum gfx_display_prim_type type)
{
switch (type)
{
case GFX_DISPLAY_PRIM_TRIANGLESTRIP:
return GL_TRIANGLE_STRIP;
case GFX_DISPLAY_PRIM_TRIANGLES:
return GL_TRIANGLES;
case GFX_DISPLAY_PRIM_NONE:
default:
break;
}
return 0;
}
static void gfx_display_gl1_blend_begin(void *data)
{
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
static void gfx_display_gl1_blend_end(void *data)
{
glDisable(GL_BLEND);
}
static void gfx_display_gl1_viewport(gfx_display_ctx_draw_t *draw,
void *data)
{
if (draw)
glViewport(draw->x, draw->y, draw->width, draw->height);
}
static void gfx_display_gl1_draw(gfx_display_ctx_draw_t *draw,
void *data,
unsigned video_width,
unsigned video_height)
{
video_shader_ctx_mvp_t mvp;
gl1_t *gl1 = (gl1_t*)data;
if (!gl1 || !draw)
return;
if (!draw->coords->vertex)
draw->coords->vertex = gfx_display_gl1_get_default_vertices();
if (!draw->coords->tex_coord)
draw->coords->tex_coord = gfx_display_gl1_get_default_tex_coords();
if (!draw->coords->lut_tex_coord)
draw->coords->lut_tex_coord = gfx_display_gl1_get_default_tex_coords();
if (!draw->texture)
return;
gfx_display_gl1_viewport(draw, gl1);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, (GLuint)draw->texture);
mvp.data = gl1;
mvp.matrix = draw->matrix_data ? (math_matrix_4x4*)draw->matrix_data
: (math_matrix_4x4*)gfx_display_gl1_get_default_mvp(gl1);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadMatrixf((const GLfloat*)mvp.matrix);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glEnableClientState(GL_COLOR_ARRAY);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
#ifdef VITA
{
unsigned i;
static float *vertices3 = NULL;
if (vertices3)
free(vertices3);
vertices3 = (float*)malloc(sizeof(float) * 3 * draw->coords->vertices);
for (i = 0; i < draw->coords->vertices; i++)
{
memcpy(&vertices3[i*3], &draw->coords->vertex[i*2], sizeof(float) * 2);
vertices3[i*3+2] = 0.0f;
}
glVertexPointer(3, GL_FLOAT, 0, vertices3);
}
#else
glVertexPointer(2, GL_FLOAT, 0, draw->coords->vertex);
#endif
glColorPointer(4, GL_FLOAT, 0, draw->coords->color);
glTexCoordPointer(2, GL_FLOAT, 0, draw->coords->tex_coord);
glDrawArrays(gfx_display_prim_to_gl1_enum(
draw->prim_type), 0, draw->coords->vertices);
glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
gl1->coords.color = gl1->white_color_ptr;
}
static void gfx_display_gl1_restore_clear_color(void)
{
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
}
static void gfx_display_gl1_clear_color(
gfx_display_ctx_clearcolor_t *clearcolor,
void *data)
{
if (!clearcolor)
return;
glClearColor(clearcolor->r,
clearcolor->g, clearcolor->b, clearcolor->a);
glClear(GL_COLOR_BUFFER_BIT);
}
static bool gfx_display_gl1_font_init_first(
void **font_handle, void *video_data,
const char *font_path, float menu_font_size,
bool is_threaded)
{
font_data_t **handle = (font_data_t**)font_handle;
if (!(*handle = font_driver_init_first(video_data,
font_path, menu_font_size, true,
is_threaded,
FONT_DRIVER_RENDER_OPENGL1_API)))
return false;
return true;
}
static void gfx_display_gl1_scissor_begin(void *data,
unsigned video_width,
unsigned video_height,
int x, int y,
unsigned width, unsigned height)
{
glScissor(x, video_height - y - height, width, height);
glEnable(GL_SCISSOR_TEST);
}
static void gfx_display_gl1_scissor_end(
void *data,
unsigned video_width,
unsigned video_height)
{
glScissor(0, 0, video_width, video_height);
glDisable(GL_SCISSOR_TEST);
}
gfx_display_ctx_driver_t gfx_display_ctx_gl1 = {
gfx_display_gl1_draw,
NULL,
gfx_display_gl1_viewport,
gfx_display_gl1_blend_begin,
gfx_display_gl1_blend_end,
gfx_display_gl1_restore_clear_color,
gfx_display_gl1_clear_color,
gfx_display_gl1_get_default_mvp,
gfx_display_gl1_get_default_vertices,
gfx_display_gl1_get_default_tex_coords,
gfx_display_gl1_font_init_first,
GFX_VIDEO_DRIVER_OPENGL1,
"gl1",
false,
gfx_display_gl1_scissor_begin,
gfx_display_gl1_scissor_end
};