mirror of
https://github.com/libretro/RetroArch.git
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262 lines
6.9 KiB
C
262 lines
6.9 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2011-2017 - Daniel De Matteis
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <retro_miscellaneous.h>
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#ifdef HAVE_CONFIG_H
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#include "../../config.h"
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#endif
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#include "../../retroarch.h"
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#include "../../gfx/font_driver.h"
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#include "../../gfx/video_context_driver.h"
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#include "../../gfx/video_shader_driver.h"
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#include "../../gfx/common/gl_common.h"
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#include "../menu_display.h"
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static const GLfloat gl_vertexes[] = {
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0, 0,
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1, 0,
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0, 1,
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1, 1
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};
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static const GLfloat gl_tex_coords[] = {
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0, 1,
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1, 1,
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0, 0,
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1, 0
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};
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static const float *menu_display_gl_get_default_vertices(void)
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{
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return &gl_vertexes[0];
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}
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static const float *menu_display_gl_get_default_tex_coords(void)
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{
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return &gl_tex_coords[0];
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}
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static void *menu_display_gl_get_default_mvp(void)
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{
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gl_t *gl = (gl_t*)video_driver_get_ptr(false);
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if (!gl)
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return NULL;
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return &gl->mvp_no_rot;
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}
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static GLenum menu_display_prim_to_gl_enum(
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enum menu_display_prim_type type)
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{
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switch (type)
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{
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case MENU_DISPLAY_PRIM_TRIANGLESTRIP:
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return GL_TRIANGLE_STRIP;
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case MENU_DISPLAY_PRIM_TRIANGLES:
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return GL_TRIANGLES;
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case MENU_DISPLAY_PRIM_NONE:
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default:
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break;
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}
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return 0;
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}
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static void menu_display_gl_blend_begin(void)
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{
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video_shader_ctx_info_t shader_info;
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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shader_info.data = NULL;
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shader_info.idx = VIDEO_SHADER_STOCK_BLEND;
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shader_info.set_active = true;
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video_shader_driver_use(shader_info);
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}
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static void menu_display_gl_blend_end(void)
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{
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glDisable(GL_BLEND);
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}
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static void menu_display_gl_viewport(void *data)
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{
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gl_t *gl = (gl_t*)video_driver_get_ptr(false);
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menu_display_ctx_draw_t *draw = (menu_display_ctx_draw_t*)data;
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if (!gl || !draw)
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return;
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glViewport(draw->x, draw->y, draw->width, draw->height);
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}
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static void menu_display_gl_bind_texture(void *data)
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{
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menu_display_ctx_draw_t *draw = (menu_display_ctx_draw_t*)data;
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if (!draw)
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return;
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glBindTexture(GL_TEXTURE_2D, (GLuint)draw->texture);
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}
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static void menu_display_gl_draw(void *data)
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{
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video_shader_ctx_mvp_t mvp;
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video_shader_ctx_coords_t coords;
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gl_t *gl = (gl_t*)video_driver_get_ptr(false);
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menu_display_ctx_draw_t *draw = (menu_display_ctx_draw_t*)data;
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if (!gl || !draw)
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return;
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if (!draw->coords->vertex)
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draw->coords->vertex = menu_display_gl_get_default_vertices();
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if (!draw->coords->tex_coord)
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draw->coords->tex_coord = menu_display_gl_get_default_tex_coords();
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if (!draw->coords->lut_tex_coord)
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draw->coords->lut_tex_coord = menu_display_gl_get_default_tex_coords();
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menu_display_gl_viewport(draw);
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menu_display_gl_bind_texture(draw);
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coords.handle_data = gl;
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coords.data = draw->coords;
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video_shader_driver_set_coords(coords);
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mvp.data = gl;
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mvp.matrix = draw->matrix_data ? (math_matrix_4x4*)draw->matrix_data
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: (math_matrix_4x4*)menu_display_gl_get_default_mvp();
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video_shader_driver_set_mvp(mvp);
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glDrawArrays(menu_display_prim_to_gl_enum(
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draw->prim_type), 0, draw->coords->vertices);
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gl->coords.color = gl->white_color_ptr;
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}
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static void menu_display_gl_draw_pipeline(void *data)
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{
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#ifdef HAVE_SHADERPIPELINE
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video_shader_ctx_info_t shader_info;
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struct uniform_info uniform_param;
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static float t = 0;
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menu_display_ctx_draw_t *draw = (menu_display_ctx_draw_t*)data;
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video_coord_array_t *ca = menu_display_get_coords_array();
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draw->x = 0;
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draw->y = 0;
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draw->coords = (struct video_coords*)(&ca->coords);
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draw->matrix_data = NULL;
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switch (draw->pipeline.id)
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{
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case VIDEO_SHADER_MENU:
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case VIDEO_SHADER_MENU_2:
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case VIDEO_SHADER_MENU_3:
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case VIDEO_SHADER_MENU_4:
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case VIDEO_SHADER_MENU_5:
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shader_info.data = NULL;
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shader_info.idx = draw->pipeline.id;
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shader_info.set_active = true;
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video_shader_driver_use(shader_info);
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t += 0.01;
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uniform_param.type = UNIFORM_1F;
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uniform_param.enabled = true;
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uniform_param.location = 0;
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uniform_param.count = 0;
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uniform_param.lookup.type = SHADER_PROGRAM_VERTEX;
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uniform_param.lookup.ident = "time";
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uniform_param.lookup.idx = draw->pipeline.id;
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uniform_param.lookup.add_prefix = true;
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uniform_param.lookup.enable = true;
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uniform_param.result.f.v0 = t;
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video_shader_driver_set_parameter(uniform_param);
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break;
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}
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switch (draw->pipeline.id)
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{
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case VIDEO_SHADER_MENU_3:
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case VIDEO_SHADER_MENU_4:
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case VIDEO_SHADER_MENU_5:
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#ifndef HAVE_PSGL
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uniform_param.type = UNIFORM_2F;
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uniform_param.lookup.ident = "OutputSize";
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uniform_param.result.f.v0 = draw->width;
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uniform_param.result.f.v1 = draw->height;
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video_shader_driver_set_parameter(uniform_param);
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#endif
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break;
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}
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#endif
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}
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static void menu_display_gl_restore_clear_color(void)
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{
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glClearColor(0.0f, 0.0f, 0.0f, 0.00f);
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}
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static void menu_display_gl_clear_color(menu_display_ctx_clearcolor_t *clearcolor)
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{
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if (!clearcolor)
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return;
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glClearColor(clearcolor->r,
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clearcolor->g, clearcolor->b, clearcolor->a);
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glClear(GL_COLOR_BUFFER_BIT);
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}
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static bool menu_display_gl_font_init_first(
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void **font_handle, void *video_data,
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const char *font_path, float font_size)
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{
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font_data_t **handle = (font_data_t**)font_handle;
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*handle = font_driver_init_first(video_data,
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font_path, font_size, true, FONT_DRIVER_RENDER_OPENGL_API);
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return *handle;
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}
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menu_display_ctx_driver_t menu_display_ctx_gl = {
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menu_display_gl_draw,
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menu_display_gl_draw_pipeline,
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menu_display_gl_viewport,
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menu_display_gl_blend_begin,
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menu_display_gl_blend_end,
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menu_display_gl_restore_clear_color,
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menu_display_gl_clear_color,
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menu_display_gl_get_default_mvp,
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menu_display_gl_get_default_vertices,
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menu_display_gl_get_default_tex_coords,
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menu_display_gl_font_init_first,
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MENU_VIDEO_DRIVER_OPENGL,
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"menu_display_gl",
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};
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