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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 |
… | |
… | |
161 | static void |
164 | static void |
162 | 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) |
163 | { |
166 | { |
164 | PangoOpenGLRenderer *renderer = PANGO_OPENGL_RENDERER (renderer_); |
167 | PangoOpenGLRenderer *renderer = PANGO_OPENGL_RENDERER (renderer_); |
165 | glyph_info *g; |
168 | glyph_info *g; |
166 | float x1, y1, x2, y2; |
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167 | |
169 | |
168 | if (glyph & PANGO_GLYPH_UNKNOWN_FLAG) |
170 | if (glyph & PANGO_GLYPH_UNKNOWN_FLAG) |
169 | { |
171 | { |
170 | glyph = pango_opengl_get_unknown_glyph (font); |
172 | glyph = pango_opengl_get_unknown_glyph (font); |
171 | |
173 | |
… | |
… | |
192 | |
194 | |
193 | tc_get (&g->tex, bm.width, bm.height); |
195 | tc_get (&g->tex, bm.width, bm.height); |
194 | |
196 | |
195 | g->left = bm.left; |
197 | g->left = bm.left; |
196 | g->top = bm.top; |
198 | g->top = bm.top; |
197 | |
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198 | if (renderer->curtex) |
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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 | |
199 | |
204 | glBindTexture (GL_TEXTURE_2D, g->tex.name); |
200 | glBindTexture (GL_TEXTURE_2D, g->tex.name); |
205 | glPixelStorei (GL_UNPACK_ROW_LENGTH, bm.stride); |
201 | glPixelStorei (GL_UNPACK_ROW_LENGTH, bm.stride); |
206 | glPixelStorei (GL_UNPACK_ALIGNMENT, 1); |
202 | glPixelStorei (GL_UNPACK_ALIGNMENT, 1); |
207 | glTexSubImage2D (GL_TEXTURE_2D, 0, g->tex.x, g->tex.y, bm.width, bm.height, GL_ALPHA, GL_UNSIGNED_BYTE, bm.bitmap); |
203 | glTexSubImage2D (GL_TEXTURE_2D, 0, g->tex.x, g->tex.y, bm.width, bm.height, GL_ALPHA, GL_UNSIGNED_BYTE, bm.bitmap); |
… | |
… | |
210 | } |
206 | } |
211 | |
207 | |
212 | x += g->left; |
208 | x += g->left; |
213 | y -= g->top; |
209 | y -= g->top; |
214 | |
210 | |
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) |
211 | if (g->tex.name != renderer->key.texname) |
221 | { |
212 | { |
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; |
213 | renderer->key.texname = g->tex.name; |
227 | glBegin (GL_QUADS); |
214 | renderer->arr = rc_array (renderer->rc, &renderer->key); |
228 | } |
215 | } |
229 | |
216 | |
230 | glTexCoord2f (x1, y1); glVertex2i (x , y ); |
217 | 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 | } |
218 | } |
235 | |
219 | |
236 | static void |
220 | static void |
237 | draw_trapezoid (PangoRenderer *renderer_, |
221 | draw_trapezoid (PangoRenderer *renderer_, |
238 | PangoRenderPart part, |
222 | PangoRenderPart part, |
… | |
… | |
242 | double y2, |
226 | double y2, |
243 | double x12, |
227 | double x12, |
244 | double x22) |
228 | double x22) |
245 | { |
229 | { |
246 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
230 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
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231 | rc_key_t key = renderer->key; |
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232 | rc_array_t *arr; |
247 | |
233 | |
248 | if (renderer->curtex) |
234 | key.mode = GL_QUADS; |
249 | { |
235 | key.format = GL_V2F; |
250 | glEnd (); |
236 | key.texname = 0; |
251 | renderer->curtex = 0; |
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252 | } |
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253 | |
237 | |
254 | glDisable (GL_TEXTURE_2D); |
238 | arr = rc_array (renderer->rc, &key); |
255 | |
239 | |
256 | glBegin (GL_QUADS); |
240 | rc_v2f (arr, x11, y1); |
257 | glVertex2d (x11, y1); |
241 | rc_v2f (arr, x21, y1); |
258 | glVertex2d (x12, y1); |
242 | rc_v2f (arr, x22, y2); |
259 | glVertex2d (x22, y2); |
243 | 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 | } |
244 | } |
265 | |
245 | |
266 | void |
246 | void |
267 | pango_opengl_render_layout_subpixel (PangoLayout *layout, |
247 | pango_opengl_render_layout_subpixel (PangoLayout *layout, |
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248 | rc_t *rc, |
268 | int x, int y, |
249 | int x, int y, |
269 | float r, float g, float b, float a) |
250 | float r, float g, float b, float a, |
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251 | int flags) |
270 | { |
252 | { |
271 | PangoContext *context; |
253 | PangoContext *context; |
272 | PangoFontMap *fontmap; |
254 | PangoFontMap *fontmap; |
273 | PangoRenderer *renderer; |
255 | PangoRenderer *renderer; |
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256 | PangoOpenGLRenderer *gl; |
274 | |
257 | |
275 | context = pango_layout_get_context (layout); |
258 | context = pango_layout_get_context (layout); |
276 | fontmap = pango_context_get_font_map (context); |
259 | fontmap = pango_context_get_font_map (context); |
277 | renderer = _pango_opengl_font_map_get_renderer (PANGO_OPENGL_FONT_MAP (fontmap)); |
260 | renderer = _pango_opengl_font_map_get_renderer (PANGO_OPENGL_FONT_MAP (fontmap)); |
278 | |
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279 | PANGO_OPENGL_RENDERER (renderer)->r = r; |
261 | gl = PANGO_OPENGL_RENDERER (renderer); |
280 | PANGO_OPENGL_RENDERER (renderer)->g = g; |
262 | |
281 | PANGO_OPENGL_RENDERER (renderer)->b = b; |
263 | gl->rc = rc; |
282 | PANGO_OPENGL_RENDERER (renderer)->a = a; |
264 | gl->r = r; |
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265 | gl->g = g; |
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266 | gl->b = b; |
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267 | gl->a = a; |
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268 | gl->flags = flags; |
283 | |
269 | |
284 | pango_renderer_draw_layout (renderer, layout, x, y); |
270 | pango_renderer_draw_layout (renderer, layout, x, y); |
285 | } |
271 | } |
286 | |
272 | |
287 | void |
273 | void |
288 | pango_opengl_render_layout (PangoLayout *layout, |
274 | pango_opengl_render_layout (PangoLayout *layout, |
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275 | rc_t *rc, |
289 | int x, int y, |
276 | int x, int y, |
290 | float r, float g, float b, float a) |
277 | float r, float g, float b, float a, |
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278 | int flags) |
291 | { |
279 | { |
292 | pango_opengl_render_layout_subpixel (layout, x * PANGO_SCALE, y * PANGO_SCALE, r, g, b, a); |
280 | pango_opengl_render_layout_subpixel ( |
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281 | layout, rc, x * PANGO_SCALE, y * PANGO_SCALE, r, g, b, a, flags |
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282 | ); |
293 | } |
283 | } |
294 | |
284 | |
295 | static void |
285 | static void |
296 | pango_opengl_renderer_init (PangoOpenGLRenderer *renderer) |
286 | pango_opengl_renderer_init (PangoOpenGLRenderer *renderer) |
297 | { |
287 | { |
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288 | memset (&renderer->key, 0, sizeof (rc_key_t)); |
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289 | |
298 | renderer->r = 1.; |
290 | renderer->r = 1.; |
299 | renderer->g = 1.; |
291 | renderer->g = 1.; |
300 | renderer->b = 1.; |
292 | renderer->b = 1.; |
301 | renderer->a = 1.; |
293 | renderer->a = 1.; |
302 | } |
294 | } |
303 | |
295 | |
304 | static void |
296 | static void |
305 | prepare_run (PangoRenderer *renderer, PangoLayoutRun *run) |
297 | prepare_run (PangoRenderer *renderer, PangoLayoutRun *run) |
306 | { |
298 | { |
307 | PangoOpenGLRenderer *glrenderer = (PangoOpenGLRenderer *)renderer; |
299 | PangoOpenGLRenderer *gl = (PangoOpenGLRenderer *)renderer; |
308 | PangoColor *fg = 0; |
300 | PangoColor *fg = 0; |
309 | GSList *l; |
301 | GSList *l; |
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302 | unsigned char r, g, b, a; |
310 | |
303 | |
311 | renderer->underline = PANGO_UNDERLINE_NONE; |
304 | renderer->underline = PANGO_UNDERLINE_NONE; |
312 | renderer->strikethrough = FALSE; |
305 | renderer->strikethrough = FALSE; |
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306 | |
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307 | gl->key.mode = GL_QUADS; |
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308 | gl->key.format = 0; // glyphs |
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309 | gl->key.texname = 0; |
313 | |
310 | |
314 | for (l = run->item->analysis.extra_attrs; l; l = l->next) |
311 | for (l = run->item->analysis.extra_attrs; l; l = l->next) |
315 | { |
312 | { |
316 | PangoAttribute *attr = l->data; |
313 | PangoAttribute *attr = l->data; |
317 | |
314 | |
… | |
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333 | break; |
330 | break; |
334 | } |
331 | } |
335 | } |
332 | } |
336 | |
333 | |
337 | if (fg) |
334 | if (fg) |
338 | glColor4f (fg->red / 65535., fg->green / 65535., fg->blue / 65535., glrenderer->a); |
335 | { |
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336 | r = fg->red * (255.f / 65535.f); |
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337 | g = fg->green * (255.f / 65535.f); |
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338 | b = fg->blue * (255.f / 65535.f); |
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339 | } |
339 | else |
340 | else |
340 | glColor4f (glrenderer->r, glrenderer->g, glrenderer->b, glrenderer->a); |
341 | { |
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342 | r = gl->r * 255.f; |
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343 | g = gl->g * 255.f; |
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344 | b = gl->b * 255.f; |
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345 | } |
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346 | |
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347 | a = gl->a * 255.f; |
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348 | |
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349 | if (gl->flags & FLAG_INVERSE) |
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350 | { |
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351 | r ^= 0xffU; |
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352 | g ^= 0xffU; |
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353 | b ^= 0xffU; |
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354 | } |
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355 | |
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356 | gl->key.r = r; |
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357 | gl->key.g = g; |
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358 | gl->key.b = b; |
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359 | gl->key.a = a; |
341 | } |
360 | } |
342 | |
361 | |
343 | static void |
362 | static void |
344 | draw_begin (PangoRenderer *renderer_) |
363 | draw_begin (PangoRenderer *renderer_) |
345 | { |
364 | { |
346 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
365 | 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 | } |
366 | } |
358 | |
367 | |
359 | static void |
368 | static void |
360 | draw_end (PangoRenderer *renderer_) |
369 | draw_end (PangoRenderer *renderer_) |
361 | { |
370 | { |
362 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
371 | 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 | } |
372 | } |
371 | |
373 | |
372 | static void |
374 | static void |
373 | pango_opengl_renderer_class_init (PangoOpenGLRendererClass *klass) |
375 | pango_opengl_renderer_class_init (PangoOpenGLRendererClass *klass) |
374 | { |
376 | { |