… | |
… | |
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 |
… | |
… | |
146 | } |
149 | } |
147 | |
150 | |
148 | typedef struct glyph_info { |
151 | typedef struct glyph_info { |
149 | tc_area tex; |
152 | tc_area tex; |
150 | int left, top; |
153 | int left, top; |
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154 | int generation; |
151 | } glyph_info; |
155 | } glyph_info; |
152 | |
156 | |
153 | static void |
157 | static void |
154 | free_glyph_info (glyph_info *g) |
158 | free_glyph_info (glyph_info *g) |
155 | { |
159 | { |
… | |
… | |
172 | glyph = PANGO_GLYPH_UNKNOWN_FLAG; |
176 | glyph = PANGO_GLYPH_UNKNOWN_FLAG; |
173 | } |
177 | } |
174 | |
178 | |
175 | g = _pango_opengl_font_get_cache_glyph_data (font, glyph); |
179 | g = _pango_opengl_font_get_cache_glyph_data (font, glyph); |
176 | |
180 | |
177 | if (!g) |
181 | if (!g || g->generation != tc_generation) |
178 | { |
182 | { |
179 | Glyph bm; |
183 | Glyph bm; |
180 | font_render_glyph (&bm, font, glyph); |
184 | font_render_glyph (&bm, font, glyph); |
181 | |
185 | |
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186 | if (g) |
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187 | g->generation = tc_generation; |
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188 | else |
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189 | { |
182 | g = g_slice_new (glyph_info); |
190 | g = g_slice_new (glyph_info); |
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191 | |
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192 | _pango_opengl_font_set_glyph_cache_destroy (font, (GDestroyNotify)free_glyph_info); |
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193 | _pango_opengl_font_set_cache_glyph_data (font, glyph, g); |
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194 | } |
183 | |
195 | |
184 | tc_get (&g->tex, bm.width, bm.height); |
196 | tc_get (&g->tex, bm.width, bm.height); |
185 | |
197 | |
186 | g->left = bm.left; |
198 | g->left = bm.left; |
187 | g->top = bm.top; |
199 | g->top = bm.top; |
188 | |
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189 | if (renderer->curtex) |
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190 | { |
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191 | glEnd (); |
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192 | renderer->curtex = 0; |
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193 | } |
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194 | |
200 | |
195 | glBindTexture (GL_TEXTURE_2D, g->tex.name); |
201 | glBindTexture (GL_TEXTURE_2D, g->tex.name); |
196 | glPixelStorei (GL_UNPACK_ROW_LENGTH, bm.stride); |
202 | glPixelStorei (GL_UNPACK_ROW_LENGTH, bm.stride); |
197 | glPixelStorei (GL_UNPACK_ALIGNMENT, 1); |
203 | glPixelStorei (GL_UNPACK_ALIGNMENT, 1); |
198 | glTexSubImage2D (GL_TEXTURE_2D, 0, g->tex.x, g->tex.y, bm.width, bm.height, GL_ALPHA, GL_UNSIGNED_BYTE, bm.bitmap); |
204 | glTexSubImage2D (GL_TEXTURE_2D, 0, g->tex.x, g->tex.y, bm.width, bm.height, GL_ALPHA, GL_UNSIGNED_BYTE, bm.bitmap); |
199 | glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); |
205 | glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); |
200 | glPixelStorei (GL_UNPACK_ALIGNMENT, 4); |
206 | glPixelStorei (GL_UNPACK_ALIGNMENT, 4); |
201 | |
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202 | _pango_opengl_font_set_glyph_cache_destroy (font, (GDestroyNotify)free_glyph_info); |
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203 | _pango_opengl_font_set_cache_glyph_data (font, glyph, g); |
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204 | } |
207 | } |
205 | |
208 | |
206 | x += g->left; |
209 | x += g->left; |
207 | y -= g->top; |
210 | y -= g->top; |
208 | |
211 | |
209 | x1 = g->tex.x * (1. / TC_WIDTH ); |
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210 | y1 = g->tex.y * (1. / TC_HEIGHT); |
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211 | x2 = g->tex.w * (1. / TC_WIDTH ) + x1; |
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212 | y2 = g->tex.h * (1. / TC_HEIGHT) + y1; |
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213 | |
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214 | if (g->tex.name != renderer->curtex) |
212 | if (g->tex.name != renderer->key.texname) |
215 | { |
213 | { |
216 | if (renderer->curtex) |
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217 | glEnd (); |
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218 | |
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219 | glBindTexture (GL_TEXTURE_2D, g->tex.name); |
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220 | renderer->curtex = g->tex.name; |
214 | renderer->key.texname = g->tex.name; |
221 | glBegin (GL_QUADS); |
215 | renderer->arr = rc_array (renderer->rc, &renderer->key); |
222 | } |
216 | } |
223 | |
217 | |
224 | glTexCoord2f (x1, y1); glVertex2i (x , y ); |
218 | rc_glyph (renderer->arr, g->tex.x, g->tex.y, g->tex.w, g->tex.h, x, y); |
225 | glTexCoord2f (x2, y1); glVertex2i (x + g->tex.w, y ); |
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226 | glTexCoord2f (x2, y2); glVertex2i (x + g->tex.w, y + g->tex.h); |
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227 | glTexCoord2f (x1, y2); glVertex2i (x , y + g->tex.h); |
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228 | } |
219 | } |
229 | |
220 | |
230 | static void |
221 | static void |
231 | draw_trapezoid (PangoRenderer *renderer_, |
222 | draw_trapezoid (PangoRenderer *renderer_, |
232 | PangoRenderPart part, |
223 | PangoRenderPart part, |
… | |
… | |
236 | double y2, |
227 | double y2, |
237 | double x12, |
228 | double x12, |
238 | double x22) |
229 | double x22) |
239 | { |
230 | { |
240 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
231 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
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232 | rc_key_t key = renderer->key; |
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233 | rc_array_t *arr; |
241 | |
234 | |
242 | if (renderer->curtex) |
235 | key.mode = GL_QUADS; |
243 | { |
236 | key.format = GL_V2F; |
244 | glEnd (); |
237 | key.texname = 0; |
245 | renderer->curtex = 0; |
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246 | } |
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247 | |
238 | |
248 | glDisable (GL_TEXTURE_2D); |
239 | arr = rc_array (renderer->rc, &key); |
249 | |
240 | |
250 | glBegin (GL_QUADS); |
241 | rc_v2f (arr, x11, y1); |
251 | glVertex2d (x11, y1); |
242 | rc_v2f (arr, x21, y1); |
252 | glVertex2d (x12, y1); |
243 | rc_v2f (arr, x22, y2); |
253 | glVertex2d (x22, y2); |
244 | rc_v2f (arr, x12, y2); |
254 | glVertex2d (x21, y2); |
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255 | glEnd (); |
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256 | |
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257 | glEnable (GL_TEXTURE_2D); |
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258 | } |
245 | } |
259 | |
246 | |
260 | void |
247 | void |
261 | pango_opengl_render_layout_subpixel (PangoLayout *layout, |
248 | pango_opengl_render_layout_subpixel (PangoLayout *layout, |
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249 | rc_t *rc, |
262 | int x, int y, |
250 | int x, int y, |
263 | float r, float g, float b, float a) |
251 | float r, float g, float b, float a, |
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252 | int flags) |
264 | { |
253 | { |
265 | PangoContext *context; |
254 | PangoContext *context; |
266 | PangoFontMap *fontmap; |
255 | PangoFontMap *fontmap; |
267 | PangoRenderer *renderer; |
256 | PangoRenderer *renderer; |
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257 | PangoOpenGLRenderer *gl; |
268 | |
258 | |
269 | context = pango_layout_get_context (layout); |
259 | context = pango_layout_get_context (layout); |
270 | fontmap = pango_context_get_font_map (context); |
260 | fontmap = pango_context_get_font_map (context); |
271 | renderer = _pango_opengl_font_map_get_renderer (PANGO_OPENGL_FONT_MAP (fontmap)); |
261 | renderer = _pango_opengl_font_map_get_renderer (PANGO_OPENGL_FONT_MAP (fontmap)); |
272 | |
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273 | PANGO_OPENGL_RENDERER (renderer)->r = r; |
262 | gl = PANGO_OPENGL_RENDERER (renderer); |
274 | PANGO_OPENGL_RENDERER (renderer)->g = g; |
263 | |
275 | PANGO_OPENGL_RENDERER (renderer)->b = b; |
264 | gl->rc = rc; |
276 | PANGO_OPENGL_RENDERER (renderer)->a = a; |
265 | gl->r = r; |
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266 | gl->g = g; |
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267 | gl->b = b; |
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268 | gl->a = a; |
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269 | gl->flags = flags; |
277 | |
270 | |
278 | pango_renderer_draw_layout (renderer, layout, x, y); |
271 | pango_renderer_draw_layout (renderer, layout, x, y); |
279 | } |
272 | } |
280 | |
273 | |
281 | void |
274 | void |
282 | pango_opengl_render_layout (PangoLayout *layout, |
275 | pango_opengl_render_layout (PangoLayout *layout, |
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276 | rc_t *rc, |
283 | int x, int y, |
277 | int x, int y, |
284 | float r, float g, float b, float a) |
278 | float r, float g, float b, float a, |
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279 | int flags) |
285 | { |
280 | { |
286 | pango_opengl_render_layout_subpixel (layout, x * PANGO_SCALE, y * PANGO_SCALE, r, g, b, a); |
281 | pango_opengl_render_layout_subpixel ( |
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282 | layout, rc, x * PANGO_SCALE, y * PANGO_SCALE, r, g, b, a, flags |
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283 | ); |
287 | } |
284 | } |
288 | |
285 | |
289 | static void |
286 | static void |
290 | pango_opengl_renderer_init (PangoOpenGLRenderer *renderer) |
287 | pango_opengl_renderer_init (PangoOpenGLRenderer *renderer) |
291 | { |
288 | { |
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289 | memset (&renderer->key, 0, sizeof (rc_key_t)); |
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290 | |
292 | renderer->r = 1.; |
291 | renderer->r = 1.; |
293 | renderer->g = 1.; |
292 | renderer->g = 1.; |
294 | renderer->b = 1.; |
293 | renderer->b = 1.; |
295 | renderer->a = 1.; |
294 | renderer->a = 1.; |
296 | } |
295 | } |
297 | |
296 | |
298 | static void |
297 | static void |
299 | prepare_run (PangoRenderer *renderer, PangoLayoutRun *run) |
298 | prepare_run (PangoRenderer *renderer, PangoLayoutRun *run) |
300 | { |
299 | { |
301 | PangoOpenGLRenderer *glrenderer = (PangoOpenGLRenderer *)renderer; |
300 | PangoOpenGLRenderer *gl = (PangoOpenGLRenderer *)renderer; |
302 | PangoColor *fg = 0; |
301 | PangoColor *fg = 0; |
303 | GSList *l; |
302 | GSList *l; |
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303 | unsigned char r, g, b, a; |
304 | |
304 | |
305 | renderer->underline = PANGO_UNDERLINE_NONE; |
305 | renderer->underline = PANGO_UNDERLINE_NONE; |
306 | renderer->strikethrough = FALSE; |
306 | renderer->strikethrough = FALSE; |
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307 | |
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308 | gl->key.mode = GL_QUADS; |
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309 | gl->key.format = 0; // glyphs |
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310 | gl->key.texname = 0; |
307 | |
311 | |
308 | for (l = run->item->analysis.extra_attrs; l; l = l->next) |
312 | for (l = run->item->analysis.extra_attrs; l; l = l->next) |
309 | { |
313 | { |
310 | PangoAttribute *attr = l->data; |
314 | PangoAttribute *attr = l->data; |
311 | |
315 | |
… | |
… | |
327 | break; |
331 | break; |
328 | } |
332 | } |
329 | } |
333 | } |
330 | |
334 | |
331 | if (fg) |
335 | if (fg) |
332 | glColor4f (fg->red / 65535., fg->green / 65535., fg->blue / 65535., glrenderer->a); |
336 | { |
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337 | r = fg->red * (255.f / 65535.f); |
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338 | g = fg->green * (255.f / 65535.f); |
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339 | b = fg->blue * (255.f / 65535.f); |
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340 | } |
333 | else |
341 | else |
334 | glColor4f (glrenderer->r, glrenderer->g, glrenderer->b, glrenderer->a); |
342 | { |
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343 | r = gl->r * 255.f; |
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344 | g = gl->g * 255.f; |
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345 | b = gl->b * 255.f; |
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346 | } |
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347 | |
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348 | a = gl->a * 255.f; |
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349 | |
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350 | if (gl->flags & FLAG_INVERSE) |
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351 | { |
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352 | r ^= 0xffU; |
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353 | g ^= 0xffU; |
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354 | b ^= 0xffU; |
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355 | } |
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356 | |
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357 | gl->key.r = r; |
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358 | gl->key.g = g; |
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359 | gl->key.b = b; |
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360 | gl->key.a = a; |
335 | } |
361 | } |
336 | |
362 | |
337 | static void |
363 | static void |
338 | draw_begin (PangoRenderer *renderer_) |
364 | draw_begin (PangoRenderer *renderer_) |
339 | { |
365 | { |
340 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
366 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
341 | |
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342 | renderer->curtex = 0; |
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343 | |
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344 | glEnable (GL_TEXTURE_2D); |
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345 | glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
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346 | glEnable (GL_BLEND); |
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347 | gl_BlendFuncSeparate (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, |
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348 | GL_ONE , GL_ONE_MINUS_SRC_ALPHA); |
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349 | glEnable (GL_ALPHA_TEST); |
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350 | glAlphaFunc (GL_GREATER, 0.01f); |
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351 | } |
367 | } |
352 | |
368 | |
353 | static void |
369 | static void |
354 | draw_end (PangoRenderer *renderer_) |
370 | draw_end (PangoRenderer *renderer_) |
355 | { |
371 | { |
356 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
372 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
357 | |
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358 | if (renderer->curtex) |
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359 | glEnd (); |
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360 | |
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361 | glDisable (GL_ALPHA_TEST); |
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362 | glDisable (GL_BLEND); |
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363 | glDisable (GL_TEXTURE_2D); |
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364 | } |
373 | } |
365 | |
374 | |
366 | static void |
375 | static void |
367 | pango_opengl_renderer_class_init (PangoOpenGLRendererClass *klass) |
376 | pango_opengl_renderer_class_init (PangoOpenGLRendererClass *klass) |
368 | { |
377 | { |