mirror of
https://github.com/libretro/RetroArch.git
synced 2024-12-11 18:23:45 +00:00
245 lines
6.1 KiB
C
245 lines
6.1 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2011-2017 - Daniel De Matteis
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* Copyright (C) 2016-2019 - Brad Parker
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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 "../font_driver.h"
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#include "../common/gl1_common.h"
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#include "../gfx_display.h"
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static const GLfloat gl1_menu_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 gl1_menu_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 *gfx_display_gl1_get_default_vertices(void)
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{
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return &gl1_menu_vertexes[0];
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}
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static const float *gfx_display_gl1_get_default_tex_coords(void)
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{
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return &gl1_menu_tex_coords[0];
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}
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static void *gfx_display_gl1_get_default_mvp(void *data)
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{
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gl1_t *gl1 = (gl1_t*)data;
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if (!gl1)
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return NULL;
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return &gl1->mvp_no_rot;
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}
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static GLenum gfx_display_prim_to_gl1_enum(
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enum gfx_display_prim_type type)
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{
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switch (type)
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{
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case GFX_DISPLAY_PRIM_TRIANGLESTRIP:
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return GL_TRIANGLE_STRIP;
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case GFX_DISPLAY_PRIM_TRIANGLES:
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return GL_TRIANGLES;
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case GFX_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 gfx_display_gl1_blend_begin(void *data)
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{
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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}
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static void gfx_display_gl1_blend_end(void *data)
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{
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glDisable(GL_BLEND);
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}
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static void gfx_display_gl1_viewport(gfx_display_ctx_draw_t *draw,
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void *data)
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{
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if (draw)
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glViewport(draw->x, draw->y, draw->width, draw->height);
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}
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static void gfx_display_gl1_draw(gfx_display_ctx_draw_t *draw,
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void *data,
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unsigned video_width,
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unsigned video_height)
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{
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video_shader_ctx_mvp_t mvp;
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gl1_t *gl1 = (gl1_t*)data;
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if (!gl1 || !draw)
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return;
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if (!draw->coords->vertex)
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draw->coords->vertex = gfx_display_gl1_get_default_vertices();
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if (!draw->coords->tex_coord)
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draw->coords->tex_coord = gfx_display_gl1_get_default_tex_coords();
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if (!draw->coords->lut_tex_coord)
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draw->coords->lut_tex_coord = gfx_display_gl1_get_default_tex_coords();
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if (!draw->texture)
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return;
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gfx_display_gl1_viewport(draw, gl1);
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glEnable(GL_TEXTURE_2D);
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glBindTexture(GL_TEXTURE_2D, (GLuint)draw->texture);
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mvp.data = gl1;
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mvp.matrix = draw->matrix_data ? (math_matrix_4x4*)draw->matrix_data
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: (math_matrix_4x4*)gfx_display_gl1_get_default_mvp(gl1);
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glMatrixMode(GL_PROJECTION);
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glPushMatrix();
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glLoadMatrixf((const GLfloat*)mvp.matrix);
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glMatrixMode(GL_MODELVIEW);
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glPushMatrix();
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glLoadIdentity();
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glEnableClientState(GL_COLOR_ARRAY);
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glEnableClientState(GL_VERTEX_ARRAY);
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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#ifdef VITA
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{
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unsigned i;
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static float *vertices3 = NULL;
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if (vertices3)
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free(vertices3);
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vertices3 = (float*)malloc(sizeof(float) * 3 * draw->coords->vertices);
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for (i = 0; i < draw->coords->vertices; i++)
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{
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memcpy(&vertices3[i*3], &draw->coords->vertex[i*2], sizeof(float) * 2);
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vertices3[i*3+2] = 0.0f;
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}
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glVertexPointer(3, GL_FLOAT, 0, vertices3);
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}
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#else
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glVertexPointer(2, GL_FLOAT, 0, draw->coords->vertex);
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#endif
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glColorPointer(4, GL_FLOAT, 0, draw->coords->color);
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glTexCoordPointer(2, GL_FLOAT, 0, draw->coords->tex_coord);
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glDrawArrays(gfx_display_prim_to_gl1_enum(
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draw->prim_type), 0, draw->coords->vertices);
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glDisableClientState(GL_COLOR_ARRAY);
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glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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glDisableClientState(GL_VERTEX_ARRAY);
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glMatrixMode(GL_MODELVIEW);
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glPopMatrix();
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glMatrixMode(GL_PROJECTION);
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glPopMatrix();
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gl1->coords.color = gl1->white_color_ptr;
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}
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static void gfx_display_gl1_restore_clear_color(void)
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{
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glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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}
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static void gfx_display_gl1_clear_color(
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gfx_display_ctx_clearcolor_t *clearcolor,
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void *data)
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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 gfx_display_gl1_font_init_first(
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void **font_handle, void *video_data,
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const char *font_path, float menu_font_size,
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bool is_threaded)
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{
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font_data_t **handle = (font_data_t**)font_handle;
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if (!(*handle = font_driver_init_first(video_data,
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font_path, menu_font_size, true,
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is_threaded,
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FONT_DRIVER_RENDER_OPENGL1_API)))
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return false;
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return true;
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}
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static void gfx_display_gl1_scissor_begin(void *data,
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unsigned video_width,
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unsigned video_height,
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int x, int y,
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unsigned width, unsigned height)
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{
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glScissor(x, video_height - y - height, width, height);
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glEnable(GL_SCISSOR_TEST);
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}
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static void gfx_display_gl1_scissor_end(
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void *data,
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unsigned video_width,
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unsigned video_height)
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{
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glScissor(0, 0, video_width, video_height);
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glDisable(GL_SCISSOR_TEST);
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}
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gfx_display_ctx_driver_t gfx_display_ctx_gl1 = {
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gfx_display_gl1_draw,
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NULL,
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gfx_display_gl1_viewport,
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gfx_display_gl1_blend_begin,
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gfx_display_gl1_blend_end,
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gfx_display_gl1_restore_clear_color,
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gfx_display_gl1_clear_color,
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gfx_display_gl1_get_default_mvp,
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gfx_display_gl1_get_default_vertices,
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gfx_display_gl1_get_default_tex_coords,
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gfx_display_gl1_font_init_first,
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GFX_VIDEO_DRIVER_OPENGL1,
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"gl1",
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false,
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gfx_display_gl1_scissor_begin,
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gfx_display_gl1_scissor_end
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};
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