… | |
… | |
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; |
|
|
41 | rc_t *rc; // rendercache |
|
|
42 | rc_key_t key; // current render key |
|
|
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 |
… | |
… | |
100 | } |
103 | } |
101 | |
104 | |
102 | static void |
105 | static void |
103 | font_render_glyph (Glyph *glyph, PangoFont *font, int glyph_index) |
106 | font_render_glyph (Glyph *glyph, PangoFont *font, int glyph_index) |
104 | { |
107 | { |
|
|
108 | FT_Face face; |
|
|
109 | |
105 | if (glyph_index & PANGO_GLYPH_UNKNOWN_FLAG) |
110 | if (glyph_index & PANGO_GLYPH_UNKNOWN_FLAG) |
106 | { |
111 | { |
107 | PangoFontMetrics *metrics; |
112 | PangoFontMetrics *metrics; |
108 | |
113 | |
109 | if (!font) |
114 | if (!font) |
… | |
… | |
120 | pango_font_metrics_unref (metrics); |
125 | pango_font_metrics_unref (metrics); |
121 | |
126 | |
122 | return; |
127 | return; |
123 | } |
128 | } |
124 | |
129 | |
125 | FT_Face face = pango_opengl_font_get_face (font); |
130 | face = pango_opengl_font_get_face (font); |
126 | |
131 | |
127 | if (face) |
132 | if (face) |
128 | { |
133 | { |
129 | PangoOpenGLFont *glfont = (PangoOpenGLFont *)font; |
134 | PangoOpenGLFont *glfont = (PangoOpenGLFont *)font; |
130 | |
135 | |
… | |
… | |
144 | } |
149 | } |
145 | |
150 | |
146 | typedef struct glyph_info { |
151 | typedef struct glyph_info { |
147 | tc_area tex; |
152 | tc_area tex; |
148 | int left, top; |
153 | int left, top; |
|
|
154 | int generation; |
149 | } glyph_info; |
155 | } glyph_info; |
150 | |
156 | |
151 | static void |
157 | static void |
152 | free_glyph_info (glyph_info *g) |
158 | free_glyph_info (glyph_info *g) |
153 | { |
159 | { |
… | |
… | |
157 | |
163 | |
158 | static void |
164 | static void |
159 | draw_glyph (PangoRenderer *renderer_, PangoFont *font, PangoGlyph glyph, double x, double y) |
165 | draw_glyph (PangoRenderer *renderer_, PangoFont *font, PangoGlyph glyph, double x, double y) |
160 | { |
166 | { |
161 | PangoOpenGLRenderer *renderer = PANGO_OPENGL_RENDERER (renderer_); |
167 | PangoOpenGLRenderer *renderer = PANGO_OPENGL_RENDERER (renderer_); |
|
|
168 | glyph_info *g; |
|
|
169 | float x1, y1, x2, y2; |
162 | |
170 | |
163 | if (glyph & PANGO_GLYPH_UNKNOWN_FLAG) |
171 | if (glyph & PANGO_GLYPH_UNKNOWN_FLAG) |
164 | { |
172 | { |
165 | glyph = pango_opengl_get_unknown_glyph (font); |
173 | glyph = pango_opengl_get_unknown_glyph (font); |
166 | |
174 | |
167 | if (glyph == PANGO_GLYPH_EMPTY) |
175 | if (glyph == PANGO_GLYPH_EMPTY) |
168 | glyph = PANGO_GLYPH_UNKNOWN_FLAG; |
176 | glyph = PANGO_GLYPH_UNKNOWN_FLAG; |
169 | } |
177 | } |
170 | |
178 | |
171 | glyph_info *g = _pango_opengl_font_get_cache_glyph_data (font, glyph); |
179 | g = _pango_opengl_font_get_cache_glyph_data (font, glyph); |
172 | |
180 | |
173 | if (!g) |
181 | if (!g || g->generation != tc_generation) |
174 | { |
182 | { |
175 | Glyph bm; |
183 | Glyph bm; |
176 | font_render_glyph (&bm, font, glyph); |
184 | font_render_glyph (&bm, font, glyph); |
177 | |
185 | |
|
|
186 | if (g) |
|
|
187 | g->generation = tc_generation; |
|
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188 | else |
|
|
189 | { |
178 | g = g_slice_new (glyph_info); |
190 | g = g_slice_new (glyph_info); |
|
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191 | |
|
|
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); |
|
|
194 | } |
179 | |
195 | |
180 | tc_get (&g->tex, bm.width, bm.height); |
196 | tc_get (&g->tex, bm.width, bm.height); |
181 | |
197 | |
182 | g->left = bm.left; |
198 | g->left = bm.left; |
183 | g->top = bm.top; |
199 | g->top = bm.top; |
184 | |
|
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185 | if (renderer->curtex) |
|
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186 | { |
|
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187 | glEnd (); |
|
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188 | renderer->curtex = 0; |
|
|
189 | } |
|
|
190 | |
200 | |
191 | glBindTexture (GL_TEXTURE_2D, g->tex.name); |
201 | glBindTexture (GL_TEXTURE_2D, g->tex.name); |
192 | glPixelStorei (GL_UNPACK_ROW_LENGTH, bm.stride); |
202 | glPixelStorei (GL_UNPACK_ROW_LENGTH, bm.stride); |
193 | glPixelStorei (GL_UNPACK_ALIGNMENT, 1); |
203 | glPixelStorei (GL_UNPACK_ALIGNMENT, 1); |
194 | 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); |
195 | glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); |
205 | glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); |
196 | glPixelStorei (GL_UNPACK_ALIGNMENT, 4); |
206 | glPixelStorei (GL_UNPACK_ALIGNMENT, 4); |
197 | |
|
|
198 | _pango_opengl_font_set_glyph_cache_destroy (font, (GDestroyNotify)free_glyph_info); |
|
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199 | _pango_opengl_font_set_cache_glyph_data (font, glyph, g); |
|
|
200 | } |
207 | } |
201 | |
208 | |
202 | x += g->left; |
209 | x += g->left; |
203 | y -= g->top; |
210 | y -= g->top; |
204 | |
211 | |
205 | float x1 = g->tex.x * (1. / TC_WIDTH ); |
|
|
206 | float y1 = g->tex.y * (1. / TC_HEIGHT); |
|
|
207 | float x2 = g->tex.w * (1. / TC_WIDTH ) + x1; |
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208 | float y2 = g->tex.h * (1. / TC_HEIGHT) + y1; |
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209 | |
|
|
210 | if (g->tex.name != renderer->curtex) |
212 | if (g->tex.name != renderer->key.texname) |
211 | { |
213 | { |
212 | if (renderer->curtex) |
|
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213 | glEnd (); |
|
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214 | |
|
|
215 | glBindTexture (GL_TEXTURE_2D, g->tex.name); |
|
|
216 | renderer->curtex = g->tex.name; |
214 | renderer->key.texname = g->tex.name; |
217 | glBegin (GL_QUADS); |
215 | renderer->arr = rc_array (renderer->rc, &renderer->key); |
218 | } |
216 | } |
219 | |
217 | |
220 | 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); |
221 | glTexCoord2f (x2, y1); glVertex2i (x + g->tex.w, y ); |
|
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222 | glTexCoord2f (x2, y2); glVertex2i (x + g->tex.w, y + g->tex.h); |
|
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223 | glTexCoord2f (x1, y2); glVertex2i (x , y + g->tex.h); |
|
|
224 | } |
219 | } |
225 | |
220 | |
226 | static void |
221 | static void |
227 | draw_trapezoid (PangoRenderer *renderer_, |
222 | draw_trapezoid (PangoRenderer *renderer_, |
228 | PangoRenderPart part, |
223 | PangoRenderPart part, |
… | |
… | |
232 | double y2, |
227 | double y2, |
233 | double x12, |
228 | double x12, |
234 | double x22) |
229 | double x22) |
235 | { |
230 | { |
236 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
231 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
|
|
232 | rc_key_t key = renderer->key; |
|
|
233 | rc_array_t *arr; |
237 | |
234 | |
238 | if (renderer->curtex) |
235 | key.mode = GL_QUADS; |
239 | { |
236 | key.format = GL_V2F; |
240 | glEnd (); |
237 | key.texname = 0; |
241 | renderer->curtex = 0; |
|
|
242 | } |
|
|
243 | |
238 | |
244 | glDisable (GL_TEXTURE_2D); |
239 | arr = rc_array (renderer->rc, &key); |
245 | |
240 | |
246 | glBegin (GL_QUADS); |
241 | rc_v2f (arr, x11, y1); |
247 | glVertex2d (x11, y1); |
242 | rc_v2f (arr, x21, y1); |
248 | glVertex2d (x12, y1); |
243 | rc_v2f (arr, x22, y2); |
249 | glVertex2d (x22, y2); |
244 | rc_v2f (arr, x12, y2); |
250 | glVertex2d (x21, y2); |
|
|
251 | glEnd (); |
|
|
252 | |
|
|
253 | glEnable (GL_TEXTURE_2D); |
|
|
254 | } |
245 | } |
255 | |
246 | |
256 | void |
247 | void |
257 | pango_opengl_render_layout_subpixel (PangoLayout *layout, |
248 | pango_opengl_render_layout_subpixel (PangoLayout *layout, |
|
|
249 | rc_t *rc, |
258 | int x, int y, |
250 | int x, int y, |
259 | float r, float g, float b, float a) |
251 | float r, float g, float b, float a, |
|
|
252 | int flags) |
260 | { |
253 | { |
261 | PangoContext *context; |
254 | PangoContext *context; |
262 | PangoFontMap *fontmap; |
255 | PangoFontMap *fontmap; |
263 | PangoRenderer *renderer; |
256 | PangoRenderer *renderer; |
|
|
257 | PangoOpenGLRenderer *gl; |
264 | |
258 | |
265 | context = pango_layout_get_context (layout); |
259 | context = pango_layout_get_context (layout); |
266 | fontmap = pango_context_get_font_map (context); |
260 | fontmap = pango_context_get_font_map (context); |
267 | 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)); |
268 | |
|
|
269 | PANGO_OPENGL_RENDERER (renderer)->r = r; |
262 | gl = PANGO_OPENGL_RENDERER (renderer); |
270 | PANGO_OPENGL_RENDERER (renderer)->g = g; |
263 | |
271 | PANGO_OPENGL_RENDERER (renderer)->b = b; |
264 | gl->rc = rc; |
272 | PANGO_OPENGL_RENDERER (renderer)->a = a; |
265 | gl->r = r; |
|
|
266 | gl->g = g; |
|
|
267 | gl->b = b; |
|
|
268 | gl->a = a; |
|
|
269 | gl->flags = flags; |
273 | |
270 | |
274 | pango_renderer_draw_layout (renderer, layout, x, y); |
271 | pango_renderer_draw_layout (renderer, layout, x, y); |
275 | } |
272 | } |
276 | |
273 | |
277 | void |
274 | void |
278 | pango_opengl_render_layout (PangoLayout *layout, |
275 | pango_opengl_render_layout (PangoLayout *layout, |
|
|
276 | rc_t *rc, |
279 | int x, int y, |
277 | int x, int y, |
280 | float r, float g, float b, float a) |
278 | float r, float g, float b, float a, |
|
|
279 | int flags) |
281 | { |
280 | { |
282 | pango_opengl_render_layout_subpixel (layout, x * PANGO_SCALE, y * PANGO_SCALE, r, g, b, a); |
281 | pango_opengl_render_layout_subpixel ( |
|
|
282 | layout, rc, x * PANGO_SCALE, y * PANGO_SCALE, r, g, b, a, flags |
|
|
283 | ); |
283 | } |
284 | } |
284 | |
285 | |
285 | static void |
286 | static void |
286 | pango_opengl_renderer_init (PangoOpenGLRenderer *renderer) |
287 | pango_opengl_renderer_init (PangoOpenGLRenderer *renderer) |
287 | { |
288 | { |
|
|
289 | memset (&renderer->key, 0, sizeof (rc_key_t)); |
|
|
290 | |
288 | renderer->r = 1.; |
291 | renderer->r = 1.; |
289 | renderer->g = 1.; |
292 | renderer->g = 1.; |
290 | renderer->b = 1.; |
293 | renderer->b = 1.; |
291 | renderer->a = 1.; |
294 | renderer->a = 1.; |
292 | } |
295 | } |
293 | |
296 | |
294 | static void |
297 | static void |
295 | prepare_run (PangoRenderer *renderer, PangoLayoutRun *run) |
298 | prepare_run (PangoRenderer *renderer, PangoLayoutRun *run) |
296 | { |
299 | { |
297 | PangoOpenGLRenderer *glrenderer = (PangoOpenGLRenderer *)renderer; |
300 | PangoOpenGLRenderer *gl = (PangoOpenGLRenderer *)renderer; |
298 | PangoColor *fg = 0; |
301 | PangoColor *fg = 0; |
299 | GSList *l; |
302 | GSList *l; |
|
|
303 | unsigned char r, g, b, a; |
300 | |
304 | |
301 | renderer->underline = PANGO_UNDERLINE_NONE; |
305 | renderer->underline = PANGO_UNDERLINE_NONE; |
302 | renderer->strikethrough = FALSE; |
306 | renderer->strikethrough = FALSE; |
|
|
307 | |
|
|
308 | gl->key.mode = GL_QUADS; |
|
|
309 | gl->key.format = 0; // glyphs |
|
|
310 | gl->key.texname = 0; |
303 | |
311 | |
304 | for (l = run->item->analysis.extra_attrs; l; l = l->next) |
312 | for (l = run->item->analysis.extra_attrs; l; l = l->next) |
305 | { |
313 | { |
306 | PangoAttribute *attr = l->data; |
314 | PangoAttribute *attr = l->data; |
307 | |
315 | |
… | |
… | |
323 | break; |
331 | break; |
324 | } |
332 | } |
325 | } |
333 | } |
326 | |
334 | |
327 | if (fg) |
335 | if (fg) |
328 | glColor4f (fg->red / 65535., fg->green / 65535., fg->blue / 65535., glrenderer->a); |
336 | { |
|
|
337 | r = fg->red * (255.f / 65535.f); |
|
|
338 | g = fg->green * (255.f / 65535.f); |
|
|
339 | b = fg->blue * (255.f / 65535.f); |
|
|
340 | } |
329 | else |
341 | else |
330 | glColor4f (glrenderer->r, glrenderer->g, glrenderer->b, glrenderer->a); |
342 | { |
|
|
343 | r = gl->r * 255.f; |
|
|
344 | g = gl->g * 255.f; |
|
|
345 | b = gl->b * 255.f; |
|
|
346 | } |
|
|
347 | |
|
|
348 | a = gl->a * 255.f; |
|
|
349 | |
|
|
350 | if (gl->flags & FLAG_INVERSE) |
|
|
351 | { |
|
|
352 | r ^= 0xffU; |
|
|
353 | g ^= 0xffU; |
|
|
354 | b ^= 0xffU; |
|
|
355 | } |
|
|
356 | |
|
|
357 | gl->key.r = r; |
|
|
358 | gl->key.g = g; |
|
|
359 | gl->key.b = b; |
|
|
360 | gl->key.a = a; |
331 | } |
361 | } |
332 | |
362 | |
333 | static void |
363 | static void |
334 | draw_begin (PangoRenderer *renderer_) |
364 | draw_begin (PangoRenderer *renderer_) |
335 | { |
365 | { |
336 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
366 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
337 | |
|
|
338 | renderer->curtex = 0; |
|
|
339 | |
|
|
340 | glEnable (GL_TEXTURE_2D); |
|
|
341 | glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
|
|
342 | glEnable (GL_BLEND); |
|
|
343 | gl_BlendFuncSeparate (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, |
|
|
344 | GL_ONE , GL_ONE_MINUS_SRC_ALPHA); |
|
|
345 | glEnable (GL_ALPHA_TEST); |
|
|
346 | glAlphaFunc (GL_GREATER, 0.01f); |
|
|
347 | } |
367 | } |
348 | |
368 | |
349 | static void |
369 | static void |
350 | draw_end (PangoRenderer *renderer_) |
370 | draw_end (PangoRenderer *renderer_) |
351 | { |
371 | { |
352 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
372 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
353 | |
|
|
354 | if (renderer->curtex) |
|
|
355 | glEnd (); |
|
|
356 | |
|
|
357 | glDisable (GL_ALPHA_TEST); |
|
|
358 | glDisable (GL_BLEND); |
|
|
359 | glDisable (GL_TEXTURE_2D); |
|
|
360 | } |
373 | } |
361 | |
374 | |
362 | static void |
375 | static void |
363 | pango_opengl_renderer_class_init (PangoOpenGLRendererClass *klass) |
376 | pango_opengl_renderer_class_init (PangoOpenGLRendererClass *klass) |
364 | { |
377 | { |