… | |
… | |
35 | |
35 | |
36 | struct _PangoOpenGLRenderer |
36 | struct _PangoOpenGLRenderer |
37 | { |
37 | { |
38 | PangoRenderer parent_instance; |
38 | PangoRenderer parent_instance; |
39 | float r, g, b, a; // modulate |
39 | float r, g, b, a; // modulate |
40 | GLuint curtex; // current texture |
40 | int flags; |
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41 | rc_t *rc; // rendercache |
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42 | rc_key_t key; // current render key |
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43 | rc_array_t *arr; |
41 | }; |
44 | }; |
42 | |
45 | |
43 | G_DEFINE_TYPE (PangoOpenGLRenderer, pango_opengl_renderer, PANGO_TYPE_RENDERER) |
46 | G_DEFINE_TYPE (PangoOpenGLRenderer, pango_opengl_renderer, PANGO_TYPE_RENDERER) |
44 | |
47 | |
45 | typedef struct |
48 | typedef struct |
… | |
… | |
156 | { |
159 | { |
157 | tc_put (&g->tex); |
160 | tc_put (&g->tex); |
158 | g_slice_free (glyph_info, g); |
161 | g_slice_free (glyph_info, g); |
159 | } |
162 | } |
160 | |
163 | |
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164 | static char *apple_nvidia_bug_buf; |
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165 | |
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166 | static void |
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167 | apple_nvidia_bug (int enable) |
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168 | { |
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169 | g_slice_free1 (TC_WIDTH * TC_HEIGHT, apple_nvidia_bug_buf); |
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170 | apple_nvidia_bug_buf = enable ? g_slice_alloc (TC_WIDTH * TC_HEIGHT) : 0; |
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171 | } |
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172 | |
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173 | static void |
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174 | tex_update (int name, int x, int y, int w, int stride, int h, void *bm) |
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175 | { |
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176 | glBindTexture (GL_TEXTURE_2D, name); |
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177 | |
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178 | if (!apple_nvidia_bug_buf) |
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179 | { |
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180 | glPixelStorei (GL_UNPACK_ROW_LENGTH, stride); |
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181 | glPixelStorei (GL_UNPACK_ALIGNMENT, 1); |
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182 | glTexSubImage2D (GL_TEXTURE_2D, 0, x, y, w, h, GL_ALPHA, GL_UNSIGNED_BYTE, bm); |
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183 | glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); |
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184 | glPixelStorei (GL_UNPACK_ALIGNMENT, 4); |
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185 | } |
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186 | else |
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187 | { |
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188 | /* starting with 10.5.5 (or 10.5.6), pple's nvidia driver corrupts textures */ |
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189 | /* when glTexSubImage is used, so do it the horribly slow way, */ |
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190 | /* reading/patching/uploading the full texture one each change */ |
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191 | int r; |
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192 | |
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193 | glGetTexImage (GL_TEXTURE_2D, 0, GL_ALPHA, GL_UNSIGNED_BYTE, apple_nvidia_bug_buf); |
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194 | |
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195 | for (r = 0; r < h; ++r) |
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196 | memcpy ((char *)apple_nvidia_bug_buf + (y + r) * TC_WIDTH + x, (char *)bm + r * stride, w); |
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197 | |
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198 | glTexImage2D (GL_TEXTURE_2D, 0, GL_ALPHA, TC_WIDTH, TC_HEIGHT, 0, GL_ALPHA, GL_UNSIGNED_BYTE, apple_nvidia_bug_buf); |
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199 | } |
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200 | } |
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201 | |
161 | static void |
202 | static void |
162 | draw_glyph (PangoRenderer *renderer_, PangoFont *font, PangoGlyph glyph, double x, double y) |
203 | draw_glyph (PangoRenderer *renderer_, PangoFont *font, PangoGlyph glyph, double x, double y) |
163 | { |
204 | { |
164 | PangoOpenGLRenderer *renderer = PANGO_OPENGL_RENDERER (renderer_); |
205 | PangoOpenGLRenderer *renderer = PANGO_OPENGL_RENDERER (renderer_); |
165 | glyph_info *g; |
206 | glyph_info *g; |
166 | float x1, y1, x2, y2; |
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167 | |
207 | |
168 | if (glyph & PANGO_GLYPH_UNKNOWN_FLAG) |
208 | if (glyph & PANGO_GLYPH_UNKNOWN_FLAG) |
169 | { |
209 | { |
170 | glyph = pango_opengl_get_unknown_glyph (font); |
210 | glyph = pango_opengl_get_unknown_glyph (font); |
171 | |
211 | |
… | |
… | |
178 | if (!g || g->generation != tc_generation) |
218 | if (!g || g->generation != tc_generation) |
179 | { |
219 | { |
180 | Glyph bm; |
220 | Glyph bm; |
181 | font_render_glyph (&bm, font, glyph); |
221 | font_render_glyph (&bm, font, glyph); |
182 | |
222 | |
183 | if (g) |
223 | if (!g) |
184 | g->generation = tc_generation; |
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185 | else |
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186 | { |
224 | { |
187 | g = g_slice_new (glyph_info); |
225 | g = g_slice_new (glyph_info); |
188 | |
226 | |
189 | _pango_opengl_font_set_glyph_cache_destroy (font, (GDestroyNotify)free_glyph_info); |
227 | _pango_opengl_font_set_glyph_cache_destroy (font, (GDestroyNotify)free_glyph_info); |
190 | _pango_opengl_font_set_cache_glyph_data (font, glyph, g); |
228 | _pango_opengl_font_set_cache_glyph_data (font, glyph, g); |
191 | } |
229 | } |
192 | |
230 | |
193 | tc_get (&g->tex, bm.width, bm.height); |
231 | g->generation = tc_generation; |
194 | |
232 | |
195 | g->left = bm.left; |
233 | g->left = bm.left; |
196 | g->top = bm.top; |
234 | g->top = bm.top; |
197 | |
235 | |
198 | if (renderer->curtex) |
236 | tc_get (&g->tex, bm.width, bm.height); |
199 | { |
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200 | glEnd (); |
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201 | renderer->curtex = 0; |
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202 | } |
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203 | |
237 | |
204 | glBindTexture (GL_TEXTURE_2D, g->tex.name); |
238 | if (bm.width && bm.height) |
205 | glPixelStorei (GL_UNPACK_ROW_LENGTH, bm.stride); |
239 | tex_update (g->tex.name, g->tex.x, g->tex.y, bm.width, bm.stride, bm.height, bm.bitmap); |
206 | glPixelStorei (GL_UNPACK_ALIGNMENT, 1); |
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207 | glTexSubImage2D (GL_TEXTURE_2D, 0, g->tex.x, g->tex.y, bm.width, bm.height, GL_ALPHA, GL_UNSIGNED_BYTE, bm.bitmap); |
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208 | glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); |
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209 | glPixelStorei (GL_UNPACK_ALIGNMENT, 4); |
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210 | } |
240 | } |
211 | |
241 | |
212 | x += g->left; |
242 | x += g->left; |
213 | y -= g->top; |
243 | y -= g->top; |
214 | |
244 | |
215 | x1 = g->tex.x * (1. / TC_WIDTH ); |
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216 | y1 = g->tex.y * (1. / TC_HEIGHT); |
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217 | x2 = g->tex.w * (1. / TC_WIDTH ) + x1; |
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218 | y2 = g->tex.h * (1. / TC_HEIGHT) + y1; |
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219 | |
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220 | if (g->tex.name != renderer->curtex) |
245 | if (g->tex.name != renderer->key.texname) |
221 | { |
246 | { |
222 | if (renderer->curtex) |
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223 | glEnd (); |
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224 | |
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225 | glBindTexture (GL_TEXTURE_2D, g->tex.name); |
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226 | renderer->curtex = g->tex.name; |
247 | renderer->key.texname = g->tex.name; |
227 | glBegin (GL_QUADS); |
248 | renderer->arr = rc_array (renderer->rc, &renderer->key); |
228 | } |
249 | } |
229 | |
250 | |
230 | glTexCoord2f (x1, y1); glVertex2i (x , y ); |
251 | rc_glyph (renderer->arr, g->tex.x, g->tex.y, g->tex.w, g->tex.h, x, y); |
231 | glTexCoord2f (x2, y1); glVertex2i (x + g->tex.w, y ); |
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232 | glTexCoord2f (x2, y2); glVertex2i (x + g->tex.w, y + g->tex.h); |
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233 | glTexCoord2f (x1, y2); glVertex2i (x , y + g->tex.h); |
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234 | } |
252 | } |
235 | |
253 | |
236 | static void |
254 | static void |
237 | draw_trapezoid (PangoRenderer *renderer_, |
255 | draw_trapezoid (PangoRenderer *renderer_, |
238 | PangoRenderPart part, |
256 | PangoRenderPart part, |
… | |
… | |
242 | double y2, |
260 | double y2, |
243 | double x12, |
261 | double x12, |
244 | double x22) |
262 | double x22) |
245 | { |
263 | { |
246 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
264 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
|
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265 | rc_key_t key = renderer->key; |
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266 | rc_array_t *arr; |
247 | |
267 | |
248 | if (renderer->curtex) |
268 | key.mode = GL_QUADS; |
249 | { |
269 | key.format = GL_V2F; |
250 | glEnd (); |
270 | key.texname = 0; |
251 | renderer->curtex = 0; |
|
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252 | } |
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253 | |
271 | |
254 | glDisable (GL_TEXTURE_2D); |
272 | arr = rc_array (renderer->rc, &key); |
255 | |
273 | |
256 | glBegin (GL_QUADS); |
274 | rc_v2f (arr, x11, y1); |
257 | glVertex2d (x11, y1); |
275 | rc_v2f (arr, x21, y1); |
258 | glVertex2d (x12, y1); |
276 | rc_v2f (arr, x22, y2); |
259 | glVertex2d (x22, y2); |
277 | rc_v2f (arr, x12, y2); |
260 | glVertex2d (x21, y2); |
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261 | glEnd (); |
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262 | |
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263 | glEnable (GL_TEXTURE_2D); |
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264 | } |
278 | } |
265 | |
279 | |
266 | void |
280 | void |
267 | pango_opengl_render_layout_subpixel (PangoLayout *layout, |
281 | pango_opengl_render_layout_subpixel (PangoLayout *layout, |
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282 | rc_t *rc, |
268 | int x, int y, |
283 | int x, int y, |
269 | float r, float g, float b, float a) |
284 | float r, float g, float b, float a, |
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285 | int flags) |
270 | { |
286 | { |
271 | PangoContext *context; |
287 | PangoContext *context; |
272 | PangoFontMap *fontmap; |
288 | PangoFontMap *fontmap; |
273 | PangoRenderer *renderer; |
289 | PangoRenderer *renderer; |
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290 | PangoOpenGLRenderer *gl; |
274 | |
291 | |
275 | context = pango_layout_get_context (layout); |
292 | context = pango_layout_get_context (layout); |
276 | fontmap = pango_context_get_font_map (context); |
293 | fontmap = pango_context_get_font_map (context); |
277 | renderer = _pango_opengl_font_map_get_renderer (PANGO_OPENGL_FONT_MAP (fontmap)); |
294 | renderer = _pango_opengl_font_map_get_renderer (PANGO_OPENGL_FONT_MAP (fontmap)); |
278 | |
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279 | PANGO_OPENGL_RENDERER (renderer)->r = r; |
295 | gl = PANGO_OPENGL_RENDERER (renderer); |
280 | PANGO_OPENGL_RENDERER (renderer)->g = g; |
296 | |
281 | PANGO_OPENGL_RENDERER (renderer)->b = b; |
297 | gl->rc = rc; |
282 | PANGO_OPENGL_RENDERER (renderer)->a = a; |
298 | gl->r = r; |
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299 | gl->g = g; |
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300 | gl->b = b; |
|
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301 | gl->a = a; |
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302 | gl->flags = flags; |
283 | |
303 | |
284 | pango_renderer_draw_layout (renderer, layout, x, y); |
304 | pango_renderer_draw_layout (renderer, layout, x, y); |
285 | } |
305 | } |
286 | |
306 | |
287 | void |
307 | void |
288 | pango_opengl_render_layout (PangoLayout *layout, |
308 | pango_opengl_render_layout (PangoLayout *layout, |
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309 | rc_t *rc, |
289 | int x, int y, |
310 | int x, int y, |
290 | float r, float g, float b, float a) |
311 | float r, float g, float b, float a, |
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312 | int flags) |
291 | { |
313 | { |
292 | pango_opengl_render_layout_subpixel (layout, x * PANGO_SCALE, y * PANGO_SCALE, r, g, b, a); |
314 | pango_opengl_render_layout_subpixel ( |
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315 | layout, rc, x * PANGO_SCALE, y * PANGO_SCALE, r, g, b, a, flags |
|
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316 | ); |
293 | } |
317 | } |
294 | |
318 | |
295 | static void |
319 | static void |
296 | pango_opengl_renderer_init (PangoOpenGLRenderer *renderer) |
320 | pango_opengl_renderer_init (PangoOpenGLRenderer *renderer) |
297 | { |
321 | { |
|
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322 | memset (&renderer->key, 0, sizeof (rc_key_t)); |
|
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323 | |
298 | renderer->r = 1.; |
324 | renderer->r = 1.; |
299 | renderer->g = 1.; |
325 | renderer->g = 1.; |
300 | renderer->b = 1.; |
326 | renderer->b = 1.; |
301 | renderer->a = 1.; |
327 | renderer->a = 1.; |
302 | } |
328 | } |
303 | |
329 | |
304 | static void |
330 | static void |
305 | prepare_run (PangoRenderer *renderer, PangoLayoutRun *run) |
331 | prepare_run (PangoRenderer *renderer, PangoLayoutRun *run) |
306 | { |
332 | { |
307 | PangoOpenGLRenderer *glrenderer = (PangoOpenGLRenderer *)renderer; |
333 | PangoOpenGLRenderer *gl = (PangoOpenGLRenderer *)renderer; |
308 | PangoColor *fg = 0; |
334 | PangoColor *fg = 0; |
309 | GSList *l; |
335 | GSList *l; |
|
|
336 | unsigned char r, g, b, a; |
310 | |
337 | |
311 | renderer->underline = PANGO_UNDERLINE_NONE; |
338 | renderer->underline = PANGO_UNDERLINE_NONE; |
312 | renderer->strikethrough = FALSE; |
339 | renderer->strikethrough = FALSE; |
|
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340 | |
|
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341 | gl->key.mode = GL_QUADS; |
|
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342 | gl->key.format = 0; // glyphs |
|
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343 | gl->key.texname = 0; |
313 | |
344 | |
314 | for (l = run->item->analysis.extra_attrs; l; l = l->next) |
345 | for (l = run->item->analysis.extra_attrs; l; l = l->next) |
315 | { |
346 | { |
316 | PangoAttribute *attr = l->data; |
347 | PangoAttribute *attr = l->data; |
317 | |
348 | |
… | |
… | |
333 | break; |
364 | break; |
334 | } |
365 | } |
335 | } |
366 | } |
336 | |
367 | |
337 | if (fg) |
368 | if (fg) |
338 | glColor4f (fg->red / 65535., fg->green / 65535., fg->blue / 65535., glrenderer->a); |
369 | { |
|
|
370 | r = fg->red * (255.f / 65535.f); |
|
|
371 | g = fg->green * (255.f / 65535.f); |
|
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372 | b = fg->blue * (255.f / 65535.f); |
|
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373 | } |
339 | else |
374 | else |
340 | glColor4f (glrenderer->r, glrenderer->g, glrenderer->b, glrenderer->a); |
375 | { |
|
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376 | r = gl->r * 255.f; |
|
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377 | g = gl->g * 255.f; |
|
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378 | b = gl->b * 255.f; |
|
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379 | } |
|
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380 | |
|
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381 | a = gl->a * 255.f; |
|
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382 | |
|
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383 | if (gl->flags & FLAG_INVERSE) |
|
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384 | { |
|
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385 | r ^= 0xffU; |
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386 | g ^= 0xffU; |
|
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387 | b ^= 0xffU; |
|
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388 | } |
|
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389 | |
|
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390 | gl->key.r = r; |
|
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391 | gl->key.g = g; |
|
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392 | gl->key.b = b; |
|
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393 | gl->key.a = a; |
341 | } |
394 | } |
342 | |
395 | |
343 | static void |
396 | static void |
344 | draw_begin (PangoRenderer *renderer_) |
397 | draw_begin (PangoRenderer *renderer_) |
345 | { |
398 | { |
346 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
399 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
347 | |
|
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348 | renderer->curtex = 0; |
|
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349 | |
|
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350 | glEnable (GL_TEXTURE_2D); |
|
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351 | glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
|
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352 | glEnable (GL_BLEND); |
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353 | gl_BlendFuncSeparate (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, |
|
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354 | GL_ONE , GL_ONE_MINUS_SRC_ALPHA); |
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355 | glEnable (GL_ALPHA_TEST); |
|
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356 | glAlphaFunc (GL_GREATER, 0.01f); |
|
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357 | } |
400 | } |
358 | |
401 | |
359 | static void |
402 | static void |
360 | draw_end (PangoRenderer *renderer_) |
403 | draw_end (PangoRenderer *renderer_) |
361 | { |
404 | { |
362 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
405 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
363 | |
|
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364 | if (renderer->curtex) |
|
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365 | glEnd (); |
|
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366 | |
|
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367 | glDisable (GL_ALPHA_TEST); |
|
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368 | glDisable (GL_BLEND); |
|
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369 | glDisable (GL_TEXTURE_2D); |
|
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370 | } |
406 | } |
371 | |
407 | |
372 | static void |
408 | static void |
373 | pango_opengl_renderer_class_init (PangoOpenGLRendererClass *klass) |
409 | pango_opengl_renderer_class_init (PangoOpenGLRendererClass *klass) |
374 | { |
410 | { |