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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 | int flags; |
40 | int flags; |
41 | GLuint curtex; // current texture |
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; |
42 | }; |
44 | }; |
43 | |
45 | |
44 | G_DEFINE_TYPE (PangoOpenGLRenderer, pango_opengl_renderer, PANGO_TYPE_RENDERER) |
46 | G_DEFINE_TYPE (PangoOpenGLRenderer, pango_opengl_renderer, PANGO_TYPE_RENDERER) |
45 | |
47 | |
46 | typedef struct |
48 | typedef struct |
… | |
… | |
157 | { |
159 | { |
158 | tc_put (&g->tex); |
160 | tc_put (&g->tex); |
159 | g_slice_free (glyph_info, g); |
161 | g_slice_free (glyph_info, g); |
160 | } |
162 | } |
161 | |
163 | |
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164 | static int apple_nvidia_bug_workaround; |
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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 | apple_nvidia_bug_workaround = enable; |
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170 | } |
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171 | |
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172 | static void |
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173 | tex_update (int name, int x, int y, int w, int stride, int h, void *bm) |
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174 | { |
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175 | glBindTexture (GL_TEXTURE_2D, name); |
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176 | |
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177 | if (!apple_nvidia_bug_workaround) |
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178 | { |
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179 | glPixelStorei (GL_UNPACK_ROW_LENGTH, stride); |
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180 | glPixelStorei (GL_UNPACK_ALIGNMENT, 1); |
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181 | glTexSubImage2D (GL_TEXTURE_2D, 0, x, y, w, h, GL_ALPHA, GL_UNSIGNED_BYTE, bm); |
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182 | glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); |
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183 | glPixelStorei (GL_UNPACK_ALIGNMENT, 4); |
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184 | } |
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185 | else |
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186 | { |
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187 | /* starting with 10.5.5 (or 10.5.6), pple's nvidia driver corrupts textures */ |
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188 | /* when glTexSubImage is used, so do it the horribly slow way, */ |
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189 | /* reading/patching/uploading the full texture one each change */ |
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190 | int r; |
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191 | |
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192 | glGetTexImage (GL_TEXTURE_2D, 0, GL_ALPHA, GL_UNSIGNED_BYTE, tc_temptile); |
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193 | |
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194 | for (r = 0; r < h; ++r) |
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195 | memcpy (tc_temptile + (y + r) * TC_WIDTH + x, (char *)bm + r * stride, w); |
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196 | |
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197 | glTexImage2D (GL_TEXTURE_2D, 0, GL_ALPHA, TC_WIDTH, TC_HEIGHT, 0, GL_ALPHA, GL_UNSIGNED_BYTE, tc_temptile); |
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198 | } |
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199 | } |
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200 | |
162 | static void |
201 | static void |
163 | draw_glyph (PangoRenderer *renderer_, PangoFont *font, PangoGlyph glyph, double x, double y) |
202 | draw_glyph (PangoRenderer *renderer_, PangoFont *font, PangoGlyph glyph, double x, double y) |
164 | { |
203 | { |
165 | PangoOpenGLRenderer *renderer = PANGO_OPENGL_RENDERER (renderer_); |
204 | PangoOpenGLRenderer *renderer = PANGO_OPENGL_RENDERER (renderer_); |
166 | glyph_info *g; |
205 | glyph_info *g; |
167 | float x1, y1, x2, y2; |
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168 | |
206 | |
169 | if (glyph & PANGO_GLYPH_UNKNOWN_FLAG) |
207 | if (glyph & PANGO_GLYPH_UNKNOWN_FLAG) |
170 | { |
208 | { |
171 | glyph = pango_opengl_get_unknown_glyph (font); |
209 | glyph = pango_opengl_get_unknown_glyph (font); |
172 | |
210 | |
… | |
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179 | if (!g || g->generation != tc_generation) |
217 | if (!g || g->generation != tc_generation) |
180 | { |
218 | { |
181 | Glyph bm; |
219 | Glyph bm; |
182 | font_render_glyph (&bm, font, glyph); |
220 | font_render_glyph (&bm, font, glyph); |
183 | |
221 | |
184 | if (g) |
222 | if (!g) |
185 | g->generation = tc_generation; |
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186 | else |
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187 | { |
223 | { |
188 | g = g_slice_new (glyph_info); |
224 | g = g_slice_new (glyph_info); |
189 | |
225 | |
190 | _pango_opengl_font_set_glyph_cache_destroy (font, (GDestroyNotify)free_glyph_info); |
226 | _pango_opengl_font_set_glyph_cache_destroy (font, (GDestroyNotify)free_glyph_info); |
191 | _pango_opengl_font_set_cache_glyph_data (font, glyph, g); |
227 | _pango_opengl_font_set_cache_glyph_data (font, glyph, g); |
192 | } |
228 | } |
193 | |
229 | |
194 | if (renderer->curtex) |
230 | g->generation = tc_generation; |
195 | glEnd (); |
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196 | |
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197 | tc_get (&g->tex, bm.width, bm.height); |
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198 | |
231 | |
199 | g->left = bm.left; |
232 | g->left = bm.left; |
200 | g->top = bm.top; |
233 | g->top = bm.top; |
201 | |
234 | |
202 | glBindTexture (GL_TEXTURE_2D, g->tex.name); |
235 | tc_get (&g->tex, bm.width, bm.height); |
203 | glPixelStorei (GL_UNPACK_ROW_LENGTH, bm.stride); |
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204 | glPixelStorei (GL_UNPACK_ALIGNMENT, 1); |
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205 | 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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206 | glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); |
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207 | glPixelStorei (GL_UNPACK_ALIGNMENT, 4); |
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208 | |
236 | |
209 | renderer->curtex = g->tex.name; |
237 | if (bm.width && bm.height) |
210 | glBegin (GL_QUADS); |
238 | tex_update (g->tex.name, g->tex.x, g->tex.y, bm.width, bm.stride, bm.height, bm.bitmap); |
211 | } |
239 | } |
212 | |
240 | |
213 | x += g->left; |
241 | x += g->left; |
214 | y -= g->top; |
242 | y -= g->top; |
215 | |
243 | |
216 | x1 = g->tex.x * (1. / TC_WIDTH ); |
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217 | y1 = g->tex.y * (1. / TC_HEIGHT); |
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218 | x2 = g->tex.w * (1. / TC_WIDTH ) + x1; |
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219 | y2 = g->tex.h * (1. / TC_HEIGHT) + y1; |
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220 | |
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221 | if (g->tex.name != renderer->curtex) |
244 | if (g->tex.name != renderer->key.texname) |
222 | { |
245 | { |
223 | if (renderer->curtex) |
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224 | glEnd (); |
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225 | |
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226 | glBindTexture (GL_TEXTURE_2D, g->tex.name); |
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227 | renderer->curtex = g->tex.name; |
246 | renderer->key.texname = g->tex.name; |
228 | |
247 | renderer->arr = rc_array (renderer->rc, &renderer->key); |
229 | glBegin (GL_QUADS); |
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230 | } |
248 | } |
231 | |
249 | |
232 | glTexCoord2f (x1, y1); glVertex2i (x , y ); |
250 | rc_glyph (renderer->arr, g->tex.x, g->tex.y, g->tex.w, g->tex.h, x, y); |
233 | glTexCoord2f (x2, y1); glVertex2i (x + g->tex.w, y ); |
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234 | glTexCoord2f (x2, y2); glVertex2i (x + g->tex.w, y + g->tex.h); |
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235 | glTexCoord2f (x1, y2); glVertex2i (x , y + g->tex.h); |
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236 | } |
251 | } |
237 | |
252 | |
238 | static void |
253 | static void |
239 | draw_trapezoid (PangoRenderer *renderer_, |
254 | draw_trapezoid (PangoRenderer *renderer_, |
240 | PangoRenderPart part, |
255 | PangoRenderPart part, |
… | |
… | |
244 | double y2, |
259 | double y2, |
245 | double x12, |
260 | double x12, |
246 | double x22) |
261 | double x22) |
247 | { |
262 | { |
248 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
263 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
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264 | rc_key_t key = renderer->key; |
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265 | rc_array_t *arr; |
249 | |
266 | |
250 | if (renderer->curtex) |
267 | key.mode = GL_QUADS; |
251 | { |
268 | key.format = GL_V2F; |
252 | glEnd (); |
269 | key.texname = 0; |
253 | renderer->curtex = 0; |
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254 | } |
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255 | |
270 | |
256 | glDisable (GL_TEXTURE_2D); |
271 | arr = rc_array (renderer->rc, &key); |
257 | |
272 | |
258 | glBegin (GL_QUADS); |
273 | rc_v2f (arr, x11, y1); |
259 | glVertex2d (x11, y1); |
274 | rc_v2f (arr, x21, y1); |
260 | glVertex2d (x21, y1); |
275 | rc_v2f (arr, x22, y2); |
261 | glVertex2d (x22, y2); |
276 | rc_v2f (arr, x12, y2); |
262 | glVertex2d (x12, y2); |
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263 | glEnd (); |
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264 | |
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265 | glEnable (GL_TEXTURE_2D); |
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266 | } |
277 | } |
267 | |
278 | |
268 | void |
279 | void |
269 | pango_opengl_render_layout_subpixel (PangoLayout *layout, |
280 | pango_opengl_render_layout_subpixel (PangoLayout *layout, |
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281 | rc_t *rc, |
270 | int x, int y, |
282 | int x, int y, |
271 | float r, float g, float b, float a, |
283 | float r, float g, float b, float a, |
272 | int flags) |
284 | int flags) |
273 | { |
285 | { |
274 | PangoContext *context; |
286 | PangoContext *context; |
275 | PangoFontMap *fontmap; |
287 | PangoFontMap *fontmap; |
276 | PangoRenderer *renderer; |
288 | PangoRenderer *renderer; |
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289 | PangoOpenGLRenderer *gl; |
277 | |
290 | |
278 | context = pango_layout_get_context (layout); |
291 | context = pango_layout_get_context (layout); |
279 | fontmap = pango_context_get_font_map (context); |
292 | fontmap = pango_context_get_font_map (context); |
280 | renderer = _pango_opengl_font_map_get_renderer (PANGO_OPENGL_FONT_MAP (fontmap)); |
293 | renderer = _pango_opengl_font_map_get_renderer (PANGO_OPENGL_FONT_MAP (fontmap)); |
281 | |
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282 | PANGO_OPENGL_RENDERER (renderer)->r = r; |
294 | gl = PANGO_OPENGL_RENDERER (renderer); |
283 | PANGO_OPENGL_RENDERER (renderer)->g = g; |
295 | |
284 | PANGO_OPENGL_RENDERER (renderer)->b = b; |
296 | gl->rc = rc; |
285 | PANGO_OPENGL_RENDERER (renderer)->a = a; |
297 | gl->r = r; |
286 | PANGO_OPENGL_RENDERER (renderer)->flags = flags; |
298 | gl->g = g; |
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299 | gl->b = b; |
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300 | gl->a = a; |
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301 | gl->flags = flags; |
287 | |
302 | |
288 | pango_renderer_draw_layout (renderer, layout, x, y); |
303 | pango_renderer_draw_layout (renderer, layout, x, y); |
289 | } |
304 | } |
290 | |
305 | |
291 | void |
306 | void |
292 | pango_opengl_render_layout (PangoLayout *layout, |
307 | pango_opengl_render_layout (PangoLayout *layout, |
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308 | rc_t *rc, |
293 | int x, int y, |
309 | int x, int y, |
294 | float r, float g, float b, float a, |
310 | float r, float g, float b, float a, |
295 | int flags) |
311 | int flags) |
296 | { |
312 | { |
297 | pango_opengl_render_layout_subpixel (layout, x * PANGO_SCALE, y * PANGO_SCALE, r, g, b, a, flags); |
313 | pango_opengl_render_layout_subpixel ( |
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314 | layout, rc, x * PANGO_SCALE, y * PANGO_SCALE, r, g, b, a, flags |
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315 | ); |
298 | } |
316 | } |
299 | |
317 | |
300 | static void |
318 | static void |
301 | pango_opengl_renderer_init (PangoOpenGLRenderer *renderer) |
319 | pango_opengl_renderer_init (PangoOpenGLRenderer *renderer) |
302 | { |
320 | { |
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321 | memset (&renderer->key, 0, sizeof (rc_key_t)); |
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322 | |
303 | renderer->r = 1.; |
323 | renderer->r = 1.; |
304 | renderer->g = 1.; |
324 | renderer->g = 1.; |
305 | renderer->b = 1.; |
325 | renderer->b = 1.; |
306 | renderer->a = 1.; |
326 | renderer->a = 1.; |
307 | } |
327 | } |
308 | |
328 | |
309 | static void |
329 | static void |
310 | prepare_run (PangoRenderer *renderer, PangoLayoutRun *run) |
330 | prepare_run (PangoRenderer *renderer, PangoLayoutRun *run) |
311 | { |
331 | { |
312 | PangoOpenGLRenderer *glrenderer = (PangoOpenGLRenderer *)renderer; |
332 | PangoOpenGLRenderer *gl = (PangoOpenGLRenderer *)renderer; |
313 | PangoColor *fg = 0; |
333 | PangoColor *fg = 0; |
314 | GSList *l; |
334 | GSList *l; |
315 | unsigned char r, g, b, a; |
335 | unsigned char r, g, b, a; |
316 | |
336 | |
317 | renderer->underline = PANGO_UNDERLINE_NONE; |
337 | renderer->underline = PANGO_UNDERLINE_NONE; |
318 | renderer->strikethrough = FALSE; |
338 | renderer->strikethrough = FALSE; |
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339 | |
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340 | gl->key.mode = GL_QUADS; |
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341 | gl->key.format = 0; // glyphs |
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342 | gl->key.texname = 0; |
319 | |
343 | |
320 | for (l = run->item->analysis.extra_attrs; l; l = l->next) |
344 | for (l = run->item->analysis.extra_attrs; l; l = l->next) |
321 | { |
345 | { |
322 | PangoAttribute *attr = l->data; |
346 | PangoAttribute *attr = l->data; |
323 | |
347 | |
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346 | g = fg->green * (255.f / 65535.f); |
370 | g = fg->green * (255.f / 65535.f); |
347 | b = fg->blue * (255.f / 65535.f); |
371 | b = fg->blue * (255.f / 65535.f); |
348 | } |
372 | } |
349 | else |
373 | else |
350 | { |
374 | { |
351 | r = glrenderer->r * 255.f; |
375 | r = gl->r * 255.f; |
352 | g = glrenderer->g * 255.f; |
376 | g = gl->g * 255.f; |
353 | b = glrenderer->b * 255.f; |
377 | b = gl->b * 255.f; |
354 | } |
378 | } |
355 | |
379 | |
356 | a = glrenderer->a * 255.f; |
380 | a = gl->a * 255.f; |
357 | |
381 | |
358 | if (glrenderer->flags & FLAG_INVERSE) |
382 | if (gl->flags & FLAG_INVERSE) |
359 | { |
383 | { |
360 | r ^= 0xffU; |
384 | r ^= 0xffU; |
361 | g ^= 0xffU; |
385 | g ^= 0xffU; |
362 | b ^= 0xffU; |
386 | b ^= 0xffU; |
363 | } |
387 | } |
364 | |
388 | |
365 | glColor4ub (r, g, b, a); |
389 | gl->key.r = r; |
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390 | gl->key.g = g; |
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391 | gl->key.b = b; |
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392 | gl->key.a = a; |
366 | } |
393 | } |
367 | |
394 | |
368 | static void |
395 | static void |
369 | draw_begin (PangoRenderer *renderer_) |
396 | draw_begin (PangoRenderer *renderer_) |
370 | { |
397 | { |
371 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
398 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
372 | |
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373 | renderer->curtex = 0; |
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374 | |
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375 | glEnable (GL_TEXTURE_2D); |
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376 | glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
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377 | glEnable (GL_BLEND); |
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378 | gl_BlendFuncSeparate (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, |
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379 | GL_ONE , GL_ONE_MINUS_SRC_ALPHA); |
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380 | glEnable (GL_ALPHA_TEST); |
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381 | glAlphaFunc (GL_GREATER, 0.01f); |
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382 | } |
399 | } |
383 | |
400 | |
384 | static void |
401 | static void |
385 | draw_end (PangoRenderer *renderer_) |
402 | draw_end (PangoRenderer *renderer_) |
386 | { |
403 | { |
387 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
404 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
388 | |
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389 | if (renderer->curtex) |
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390 | glEnd (); |
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391 | |
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392 | glDisable (GL_ALPHA_TEST); |
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393 | glDisable (GL_BLEND); |
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394 | glDisable (GL_TEXTURE_2D); |
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395 | } |
405 | } |
396 | |
406 | |
397 | static void |
407 | static void |
398 | pango_opengl_renderer_class_init (PangoOpenGLRendererClass *klass) |
408 | pango_opengl_renderer_class_init (PangoOpenGLRendererClass *klass) |
399 | { |
409 | { |