/**
* gfx_ctx_find_driver:
* @data : Input data.
* @ident : Identifier of graphics context driver to find.
* @api : API of higher-level graphics API.
* @major : Major version number of higher-level graphics API.
* @minor : Minor version number of higher-level graphics API.
* @hw_render_ctx : Request a graphics context driver capable of
* hardware rendering?
*
* Finds graphics context driver and initializes.
*
* Returns: graphics context driver if found, otherwise NULL.
**/
static const gfx_ctx_driver_t *gfx_ctx_find_driver(void *data,
const char *ident,
enum gfx_ctx_api api, unsigned major,
unsigned minor, bool hw_render_ctx)
{
const gfx_ctx_driver_t *ctx = NULL;
int i = find_gfx_ctx_driver_index(ident);
if (i >= 0)
return gfx_ctx_init(data, gfx_ctx_drivers[i], ident,
api, major, minor, hw_render_ctx);
for (i = 0; gfx_ctx_drivers[i]; i++)
{
ctx = gfx_ctx_init(data, gfx_ctx_drivers[i], ident,
api, major, minor, hw_render_ctx);
if (ctx)
return ctx;
}
return NULL;
}
static void *gl_init(const video_info_t *video, const input_driver_t **input, void **input_data)
{
#ifdef _WIN32
gfx_set_dwm();
#endif
#ifdef RARCH_CONSOLE
if (driver.video_data)
return driver.video_data;
#endif
gl_t *gl = (gl_t*)calloc(1, sizeof(gl_t));
if (!gl)
return NULL;
if (!gfx_ctx_init())
{
free(gl);
return NULL;
}
unsigned full_x = 0, full_y = 0;
gfx_ctx_get_video_size(&full_x, &full_y);
RARCH_LOG("Detecting resolution %ux%u.\n", full_x, full_y);
gfx_ctx_set_swap_interval(video->vsync ? 1 : 0, false);
unsigned win_width = video->width;
unsigned win_height = video->height;
if (video->fullscreen && (win_width == 0) && (win_height == 0))
{
win_width = full_x;
win_height = full_y;
}
if (!gfx_ctx_set_video_mode(win_width, win_height,
g_settings.video.force_16bit ? 15 : 0, video->fullscreen))
{
free(gl);
return NULL;
}
#ifndef RARCH_CONSOLE
gfx_ctx_update_window_title(true);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
#endif
#if (defined(HAVE_XML) || defined(HAVE_CG)) && defined(_WIN32)
// Win32 GL lib doesn't have some functions needed for XML shaders.
// Need to load dynamically :(
if (!load_gl_proc())
{
gfx_ctx_destroy();
free(gl);
return NULL;
}
#endif
gl->vsync = video->vsync;
gl->fullscreen = video->fullscreen;
gl->full_x = full_x;
gl->full_y = full_y;
gl->win_width = win_width;
gl->win_height = win_height;
RARCH_LOG("GL: Using resolution %ux%u\n", gl->win_width, gl->win_height);
#if defined(HAVE_CG_MENU) && defined(RARCH_CONSOLE)
RARCH_LOG("Initializing menu shader ...\n");
gl_cg_set_menu_shader(default_paths.menu_shader_file);
#endif
if (!gl_shader_init())
{
RARCH_ERR("Shader init failed.\n");
gfx_ctx_destroy();
free(gl);
return NULL;
}
RARCH_LOG("GL: Loaded %u program(s).\n", gl_shader_num());
#ifdef HAVE_FBO
// Set up render to texture.
gl_init_fbo(gl, RARCH_SCALE_BASE * video->input_scale,
RARCH_SCALE_BASE * video->input_scale);
#endif
gl->keep_aspect = video->force_aspect;
// Apparently need to set viewport for passes when we aren't using FBOs.
gl_shader_use(0);
gl_set_viewport(gl, gl->win_width, gl->win_height, false, true);
gl_shader_use(1);
gl_set_viewport(gl, gl->win_width, gl->win_height, false, true);
bool force_smooth = false;
if (gl_shader_filter_type(1, &force_smooth))
gl->tex_filter = force_smooth ? GL_LINEAR : GL_NEAREST;
else
gl->tex_filter = video->smooth ? GL_LINEAR : GL_NEAREST;
gl->texture_type = RARCH_GL_TEXTURE_TYPE;
gl->texture_fmt = video->rgb32 ? RARCH_GL_FORMAT32 : RARCH_GL_FORMAT16;
gl->base_size = video->rgb32 ? sizeof(uint32_t) : sizeof(uint16_t);
glEnable(GL_TEXTURE_2D);
glDisable(GL_DEPTH_TEST);
glDisable(GL_DITHER);
glClearColor(0, 0, 0, 1);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glVertexPointer(2, GL_FLOAT, 0, vertex_ptr);
memcpy(gl->tex_coords, tex_coords, sizeof(tex_coords));
glTexCoordPointer(2, GL_FLOAT, 0, gl->tex_coords);
glColorPointer(4, GL_FLOAT, 0, white_color);
set_lut_texture_coords(tex_coords);
gl->tex_w = RARCH_SCALE_BASE * video->input_scale;
gl->tex_h = RARCH_SCALE_BASE * video->input_scale;
#ifdef HAVE_OPENGL_TEXREF
glGenBuffers(1, &gl->pbo);
glBindBuffer(GL_TEXTURE_REFERENCE_BUFFER_SCE, gl->pbo);
glBufferData(GL_TEXTURE_REFERENCE_BUFFER_SCE,
gl->tex_w * gl->tex_h * gl->base_size * TEXTURES, NULL, GL_STREAM_DRAW);
#endif
// Empty buffer that we use to clear out the texture with on res change.
gl->empty_buf = calloc(gl->tex_w * gl->tex_h, gl->base_size);
gl_init_textures(gl);
for (unsigned i = 0; i < TEXTURES; i++)
{
gl->last_width[i] = gl->tex_w;
gl->last_height[i] = gl->tex_h;
}
for (unsigned i = 0; i < TEXTURES; i++)
{
gl->prev_info[i].tex = gl->texture[(gl->tex_index - (i + 1)) & TEXTURES_MASK];
gl->prev_info[i].input_size[0] = gl->tex_w;
gl->prev_info[i].tex_size[0] = gl->tex_w;
gl->prev_info[i].input_size[1] = gl->tex_h;
gl->prev_info[i].tex_size[1] = gl->tex_h;
memcpy(gl->prev_info[i].coord, tex_coords, sizeof(tex_coords));
}
gfx_ctx_input_driver(input, input_data);
gl_init_font(gl, g_settings.video.font_path, g_settings.video.font_size);
if (!gl_check_error())
{
gfx_ctx_destroy();
free(gl);
return NULL;
}
return gl;
}
