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comparison render_sdl.c @ 1403:87493f585c7f

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Allow selecting linear or nearet neighbor scaling for both the Open GL and SDL 2 renderers
author Michael Pavone <pavone@retrodev.com>
date Thu, 15 Jun 2017 22:51:28 -0700
parents 458df351af06
children 8a3d3bb2cd08
comparison
equal deleted inserted replaced
1402:458df351af06 1403:87493f585c7f
193 193
194 static uint32_t texture_buf[512 * 513]; 194 static uint32_t texture_buf[512 * 513];
195 #ifndef DISABLE_OPENGL 195 #ifndef DISABLE_OPENGL
196 static void gl_setup() 196 static void gl_setup()
197 { 197 {
198 tern_val def = {.ptrval = "linear"};
199 char *scaling = tern_find_path_default(config, "video\0scaling\0", def, TVAL_PTR).ptrval;
200 GLint filter = strcmp(scaling, "linear") ? GL_NEAREST : GL_LINEAR;
198 glGenTextures(3, textures); 201 glGenTextures(3, textures);
199 for (int i = 0; i < 3; i++) 202 for (int i = 0; i < 3; i++)
200 { 203 {
201 glBindTexture(GL_TEXTURE_2D, textures[i]); 204 glBindTexture(GL_TEXTURE_2D, textures[i]);
202 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 205 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
203 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 206 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
204 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 207 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
205 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 208 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
206 if (i < 2) { 209 if (i < 2) {
207 //TODO: Fixme for PAL + invalid display mode 210 //TODO: Fixme for PAL + invalid display mode
208 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 512, 512, 0, GL_BGRA, GL_UNSIGNED_BYTE, texture_buf); 211 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 512, 512, 0, GL_BGRA, GL_UNSIGNED_BYTE, texture_buf);
214 glGenBuffers(2, buffers); 217 glGenBuffers(2, buffers);
215 glBindBuffer(GL_ARRAY_BUFFER, buffers[0]); 218 glBindBuffer(GL_ARRAY_BUFFER, buffers[0]);
216 glBufferData(GL_ARRAY_BUFFER, sizeof(vertex_data), vertex_data, GL_STATIC_DRAW); 219 glBufferData(GL_ARRAY_BUFFER, sizeof(vertex_data), vertex_data, GL_STATIC_DRAW);
217 glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffers[1]); 220 glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffers[1]);
218 glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(element_data), element_data, GL_STATIC_DRAW); 221 glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(element_data), element_data, GL_STATIC_DRAW);
219 tern_val def = {.ptrval = "default.v.glsl"}; 222 def.ptrval = "default.v.glsl";
220 vshader = load_shader(tern_find_path_default(config, "video\0vertex_shader\0", def, TVAL_PTR).ptrval, GL_VERTEX_SHADER); 223 vshader = load_shader(tern_find_path_default(config, "video\0vertex_shader\0", def, TVAL_PTR).ptrval, GL_VERTEX_SHADER);
221 def.ptrval = "default.f.glsl"; 224 def.ptrval = "default.f.glsl";
222 fshader = load_shader(tern_find_path_default(config, "video\0fragment_shader\0", def, TVAL_PTR).ptrval, GL_FRAGMENT_SHADER); 225 fshader = load_shader(tern_find_path_default(config, "video\0fragment_shader\0", def, TVAL_PTR).ptrval, GL_FRAGMENT_SHADER);
223 program = glCreateProgram(); 226 program = glCreateProgram();
224 glAttachShader(program, vshader); 227 glAttachShader(program, vshader);
252 if (render_gl) { 255 if (render_gl) {
253 sdl_textures[0] = sdl_textures[1] = NULL; 256 sdl_textures[0] = sdl_textures[1] = NULL;
254 gl_setup(); 257 gl_setup();
255 } else { 258 } else {
256 #endif 259 #endif
257 260 tern_val def = {.ptrval = "linear"};
261 char *scaling = tern_find_path_default(config, "video\0scaling\0", def, TVAL_PTR).ptrval;
262 SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, scaling);
258 //TODO: Fixme for invalid display mode 263 //TODO: Fixme for invalid display mode
259 sdl_textures[0] = sdl_textures[1] = SDL_CreateTexture(main_renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, LINEBUF_SIZE, 588); 264 sdl_textures[0] = sdl_textures[1] = SDL_CreateTexture(main_renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, LINEBUF_SIZE, 588);
260 #ifndef DISABLE_OPENGL 265 #ifndef DISABLE_OPENGL
261 } 266 }
262 #endif 267 #endif