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comparison render_sdl.c @ 495:39cad98d2789

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Allow OpenGL support to be disabled at compile time. Move generic utility functions out of config.c
author Mike Pavone <pavone@retrodev.com>
date Mon, 28 Oct 2013 19:37:30 -0700
parents c8e65962bfed
children 0820a71b80f3
comparison
equal deleted inserted replaced
492:dffc07104b09 495:39cad98d2789
95 } else { 95 } else {
96 return SDL_MapRGB(screen->format, r, g, b); 96 return SDL_MapRGB(screen->format, r, g, b);
97 } 97 }
98 } 98 }
99 99
100 #ifndef DISABLE_OPENGL
100 GLuint textures[3], buffers[2], vshader, fshader, program, un_textures[2], at_pos; 101 GLuint textures[3], buffers[2], vshader, fshader, program, un_textures[2], at_pos;
101 102
102 const GLfloat vertex_data[] = { 103 const GLfloat vertex_data[] = {
103 -1.0f, -1.0f, 104 -1.0f, -1.0f,
104 1.0f, -1.0f, 105 1.0f, -1.0f,
140 glDeleteShader(ret); 141 glDeleteShader(ret);
141 return 0; 142 return 0;
142 } 143 }
143 return ret; 144 return ret;
144 } 145 }
146 #endif
145 147
146 void render_alloc_surfaces(vdp_context * context) 148 void render_alloc_surfaces(vdp_context * context)
147 { 149 {
150 #ifndef DISABLE_OPENGL
148 if (render_gl) { 151 if (render_gl) {
149 context->oddbuf = context->framebuf = malloc(320 * 240 * 4 * 2); 152 context->oddbuf = context->framebuf = malloc(320 * 240 * 4 * 2);
150 memset(context->oddbuf, 0, 320 * 240 * 4 * 2); 153 memset(context->oddbuf, 0, 320 * 240 * 4 * 2);
151 context->evenbuf = ((char *)context->oddbuf) + 320 * 240 * 4; 154 context->evenbuf = ((char *)context->oddbuf) + 320 * 240 * 4;
152 glGenTextures(3, textures); 155 glGenTextures(3, textures);
183 } 186 }
184 un_textures[0] = glGetUniformLocation(program, "textures[0]"); 187 un_textures[0] = glGetUniformLocation(program, "textures[0]");
185 un_textures[1] = glGetUniformLocation(program, "textures[1]"); 188 un_textures[1] = glGetUniformLocation(program, "textures[1]");
186 at_pos = glGetAttribLocation(program, "pos"); 189 at_pos = glGetAttribLocation(program, "pos");
187 } else { 190 } else {
191 #endif
188 context->oddbuf = context->framebuf = malloc(320 * 240 * screen->format->BytesPerPixel * 2); 192 context->oddbuf = context->framebuf = malloc(320 * 240 * screen->format->BytesPerPixel * 2);
189 context->evenbuf = ((char *)context->oddbuf) + 320 * 240 * screen->format->BytesPerPixel; 193 context->evenbuf = ((char *)context->oddbuf) + 320 * 240 * screen->format->BytesPerPixel;
190 } 194 #ifndef DISABLE_OPENGL
195 }
196 #endif
191 } 197 }
192 198
193 uint8_t render_depth() 199 uint8_t render_depth()
194 { 200 {
195 return screen->format->BytesPerPixel * 8; 201 return screen->format->BytesPerPixel * 8;
318 printf("\tNum Axes: %d\n\tNum Buttons: %d\n\tNum Hats: %d\n", SDL_JoystickNumAxes(joy), SDL_JoystickNumButtons(joy), SDL_JoystickNumHats(joy)); 324 printf("\tNum Axes: %d\n\tNum Buttons: %d\n\tNum Hats: %d\n", SDL_JoystickNumAxes(joy), SDL_JoystickNumButtons(joy), SDL_JoystickNumHats(joy));
319 } 325 }
320 } 326 }
321 SDL_JoystickEventState(SDL_ENABLE); 327 SDL_JoystickEventState(SDL_ENABLE);
322 } 328 }
323 329 #ifndef DISABLE_OPENGL
324 void render_context_gl(vdp_context * context) 330 void render_context_gl(vdp_context * context)
325 { 331 {
326 glBindTexture(GL_TEXTURE_2D, textures[context->framebuf == context->oddbuf ? 0 : 1]); 332 glBindTexture(GL_TEXTURE_2D, textures[context->framebuf == context->oddbuf ? 0 : 1]);
327 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 320, 240, GL_BGRA, GL_UNSIGNED_BYTE, context->framebuf);; 333 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 320, 240, GL_BGRA, GL_UNSIGNED_BYTE, context->framebuf);;
328 334
351 if (context->regs[REG_MODE_4] & BIT_INTERLACE) 357 if (context->regs[REG_MODE_4] & BIT_INTERLACE)
352 { 358 {
353 context->framebuf = context->framebuf == context->oddbuf ? context->evenbuf : context->oddbuf; 359 context->framebuf = context->framebuf == context->oddbuf ? context->evenbuf : context->oddbuf;
354 } 360 }
355 } 361 }
362 #endif
356 363
357 uint32_t blankbuf[320*240]; 364 uint32_t blankbuf[320*240];
358 365
359 void render_context(vdp_context * context) 366 void render_context(vdp_context * context)
360 { 367 {
361 uint16_t *buf_16; 368 uint16_t *buf_16;
362 uint32_t *buf_32; 369 uint32_t *buf_32;
363 uint8_t b,g,r; 370 uint8_t b,g,r;
364 last_frame = SDL_GetTicks(); 371 last_frame = SDL_GetTicks();
372 #ifndef DISABLE_OPENGL
365 if (render_gl) 373 if (render_gl)
366 { 374 {
367 render_context_gl(context); 375 render_context_gl(context);
368 return; 376 return;
369 } 377 }
378 #endif
370 if (SDL_MUSTLOCK(screen)) { 379 if (SDL_MUSTLOCK(screen)) {
371 if (SDL_LockSurface(screen) < 0) { 380 if (SDL_LockSurface(screen) < 0) {
372 return; 381 return;
373 } 382 }
374 } 383 }