RetroArch/gfx/common/gl_common.c

105 lines
3.2 KiB
C

/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2016 - Daniel De Matteis
*
* 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 "gl_common.h"
extern void gl_load_texture_data(uint32_t id_data,
enum gfx_wrap_type wrap_type,
enum texture_filter_type filter_type,
unsigned alignment,
unsigned width, unsigned height,
const void *frame, unsigned base_size);
void gl_ff_vertex(const struct gfx_coords *coords)
{
#ifndef NO_GL_FF_VERTEX
/* Fall back to fixed function-style if needed and possible. */
glClientActiveTexture(GL_TEXTURE1);
glTexCoordPointer(2, GL_FLOAT, 0, coords->lut_tex_coord);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glClientActiveTexture(GL_TEXTURE0);
glVertexPointer(2, GL_FLOAT, 0, coords->vertex);
glEnableClientState(GL_VERTEX_ARRAY);
glColorPointer(4, GL_FLOAT, 0, coords->color);
glEnableClientState(GL_COLOR_ARRAY);
glTexCoordPointer(2, GL_FLOAT, 0, coords->tex_coord);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
#endif
}
void gl_ff_matrix(const math_matrix_4x4 *mat)
{
#ifndef NO_GL_FF_MATRIX
math_matrix_4x4 ident;
/* Fall back to fixed function-style if needed and possible. */
glMatrixMode(GL_PROJECTION);
glLoadMatrixf(mat->data);
glMatrixMode(GL_MODELVIEW);
matrix_4x4_identity(&ident);
glLoadMatrixf(ident.data);
#endif
}
bool gl_load_luts(const struct video_shader *shader,
GLuint *textures_lut)
{
unsigned i;
unsigned num_luts = MIN(shader->luts, GFX_MAX_TEXTURES);
if (!shader->luts)
return true;
glGenTextures(num_luts, textures_lut);
for (i = 0; i < num_luts; i++)
{
struct texture_image img = {0};
enum texture_filter_type filter_type = TEXTURE_FILTER_LINEAR;
RARCH_LOG("Loading texture image from: \"%s\" ...\n",
shader->lut[i].path);
if (!video_texture_image_load(&img, shader->lut[i].path))
{
RARCH_ERR("Failed to load texture image from: \"%s\"\n",
shader->lut[i].path);
return false;
}
if (shader->lut[i].filter == RARCH_FILTER_NEAREST)
filter_type = TEXTURE_FILTER_NEAREST;
if (shader->lut[i].mipmap)
{
if (filter_type == TEXTURE_FILTER_NEAREST)
filter_type = TEXTURE_FILTER_MIPMAP_NEAREST;
else
filter_type = TEXTURE_FILTER_MIPMAP_LINEAR;
}
gl_load_texture_data(textures_lut[i],
shader->lut[i].wrap,
filter_type, 4,
img.width, img.height,
img.pixels, sizeof(uint32_t));
video_texture_image_free(&img);
}
glBindTexture(GL_TEXTURE_2D, 0);
return true;
}