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comparison src/video/SDL_renderer_gl.c @ 5151:5429daf5e3f9

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The DrawRect API is implemented using lines
author Sam Lantinga <slouken@libsdl.org>
date Tue, 01 Feb 2011 20:50:04 -0800
parents ad50b3db78bd
children be02be2ea897
comparison
equal deleted inserted replaced
5150:ad50b3db78bd 5151:5429daf5e3f9
91 static int GL_RenderClear(SDL_Renderer * renderer); 91 static int GL_RenderClear(SDL_Renderer * renderer);
92 static int GL_RenderDrawPoints(SDL_Renderer * renderer, 92 static int GL_RenderDrawPoints(SDL_Renderer * renderer,
93 const SDL_Point * points, int count); 93 const SDL_Point * points, int count);
94 static int GL_RenderDrawLines(SDL_Renderer * renderer, 94 static int GL_RenderDrawLines(SDL_Renderer * renderer,
95 const SDL_Point * points, int count); 95 const SDL_Point * points, int count);
96 static int GL_RenderDrawRects(SDL_Renderer * renderer,
97 const SDL_Rect ** rects, int count);
98 static int GL_RenderFillRects(SDL_Renderer * renderer, 96 static int GL_RenderFillRects(SDL_Renderer * renderer,
99 const SDL_Rect ** rects, int count); 97 const SDL_Rect ** rects, int count);
100 static int GL_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture, 98 static int GL_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
101 const SDL_Rect * srcrect, const SDL_Rect * dstrect); 99 const SDL_Rect * srcrect, const SDL_Rect * dstrect);
102 static int GL_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect, 100 static int GL_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
287 renderer->UnlockTexture = GL_UnlockTexture; 285 renderer->UnlockTexture = GL_UnlockTexture;
288 renderer->DirtyTexture = GL_DirtyTexture; 286 renderer->DirtyTexture = GL_DirtyTexture;
289 renderer->RenderClear = GL_RenderClear; 287 renderer->RenderClear = GL_RenderClear;
290 renderer->RenderDrawPoints = GL_RenderDrawPoints; 288 renderer->RenderDrawPoints = GL_RenderDrawPoints;
291 renderer->RenderDrawLines = GL_RenderDrawLines; 289 renderer->RenderDrawLines = GL_RenderDrawLines;
292 renderer->RenderDrawRects = GL_RenderDrawRects;
293 renderer->RenderFillRects = GL_RenderFillRects; 290 renderer->RenderFillRects = GL_RenderFillRects;
294 renderer->RenderCopy = GL_RenderCopy; 291 renderer->RenderCopy = GL_RenderCopy;
295 renderer->RenderReadPixels = GL_RenderReadPixels; 292 renderer->RenderReadPixels = GL_RenderReadPixels;
296 renderer->RenderWritePixels = GL_RenderWritePixels; 293 renderer->RenderWritePixels = GL_RenderWritePixels;
297 renderer->RenderPresent = GL_RenderPresent; 294 renderer->RenderPresent = GL_RenderPresent;
1137 1134
1138 return 0; 1135 return 0;
1139 } 1136 }
1140 1137
1141 static int 1138 static int
1142 GL_RenderDrawRects(SDL_Renderer * renderer, const SDL_Rect ** rects, int count)
1143 {
1144 GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
1145 int i, x, y;
1146
1147 GL_ActivateRenderer(renderer);
1148
1149 GL_SetBlendMode(data, renderer->blendMode);
1150
1151 data->glColor4f((GLfloat) renderer->r * inv255f,
1152 (GLfloat) renderer->g * inv255f,
1153 (GLfloat) renderer->b * inv255f,
1154 (GLfloat) renderer->a * inv255f);
1155
1156 data->glBegin(GL_LINE_LOOP);
1157 for (i = 0; i < count; ++i) {
1158 const SDL_Rect *rect = rects[i];
1159
1160 x = rect->x;
1161 y = rect->y;
1162 data->glVertex2f(0.5f + x, 0.5f + y);
1163
1164 x = rect->x+rect->w-1;
1165 y = rect->y;
1166 data->glVertex2f(0.5f + x, 0.5f + y);
1167
1168 x = rect->x+rect->w-1;
1169 y = rect->y+rect->h-1;
1170 data->glVertex2f(0.5f + x, 0.5f + y);
1171
1172 x = rect->x;
1173 y = rect->y+rect->h-1;
1174 data->glVertex2f(0.5f + x, 0.5f + y);
1175 }
1176 data->glEnd();
1177
1178 return 0;
1179 }
1180
1181 static int
1182 GL_RenderFillRects(SDL_Renderer * renderer, const SDL_Rect ** rects, int count) 1139 GL_RenderFillRects(SDL_Renderer * renderer, const SDL_Rect ** rects, int count)
1183 { 1140 {
1184 GL_RenderData *data = (GL_RenderData *) renderer->driverdata; 1141 GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
1185 int i; 1142 int i;
1186 1143