void _cairo_gl_composite_set_solid_source (cairo_gl_composite_t *setup, const cairo_color_t *color) { _cairo_gl_operand_destroy (&setup->src); _cairo_gl_solid_operand_init (&setup->src, color); }
void _cairo_gl_composite_set_source_operand (cairo_gl_composite_t *setup, const cairo_gl_operand_t *source) { _cairo_gl_operand_destroy (&setup->src); _cairo_gl_operand_copy (&setup->src, source); }
cairo_int_status_t _cairo_gl_composite_set_mask (cairo_gl_composite_t *setup, const cairo_pattern_t *pattern, const cairo_rectangle_int_t *sample, const cairo_rectangle_int_t *extents) { cairo_int_status_t status; _cairo_gl_operand_destroy (&setup->mask); if (pattern == NULL) return CAIRO_STATUS_SUCCESS; /* XXX: shoot me - we need to set component_alpha to be true if op is CAIRO_OPERATOR_CLEAR AND pattern is a surface_pattern */ status = _cairo_gl_operand_init (&setup->mask, pattern, setup->dst, sample, extents, FALSE); if (unlikely (status)) return status; if (setup->op == CAIRO_OPERATOR_CLEAR && ! _cairo_pattern_is_opaque (pattern, sample)) setup->mask.texture.attributes.has_component_alpha = TRUE; return status; }
void _cairo_gl_composite_set_mask_operand (cairo_gl_composite_t *setup, const cairo_gl_operand_t *mask) { _cairo_gl_operand_destroy (&setup->mask); if (mask) _cairo_gl_operand_copy (&setup->mask, mask); }
static cairo_status_t _cairo_gl_source_finish (void *abstract_surface) { cairo_gl_source_t *source = abstract_surface; _cairo_gl_operand_destroy (&source->operand); return CAIRO_STATUS_SUCCESS; }
cairo_int_status_t _cairo_gl_composite_set_source (cairo_gl_composite_t *setup, const cairo_pattern_t *pattern, const cairo_rectangle_int_t *sample, const cairo_rectangle_int_t *extents) { _cairo_gl_operand_destroy (&setup->src); return _cairo_gl_operand_init (&setup->src, pattern, setup->dst, sample, extents); }
cairo_int_status_t _cairo_gl_composite_set_mask (cairo_gl_composite_t *setup, const cairo_pattern_t *pattern, const cairo_rectangle_int_t *sample, const cairo_rectangle_int_t *extents) { _cairo_gl_operand_destroy (&setup->mask); if (pattern == NULL) return (cairo_int_status_t)CAIRO_STATUS_SUCCESS; return _cairo_gl_operand_init (&setup->mask, pattern, setup->dst, sample, extents); }
void _cairo_gl_composite_fini (cairo_gl_composite_t *setup) { _cairo_gl_operand_destroy (&setup->src); _cairo_gl_operand_destroy (&setup->mask); }
static cairo_status_t _render_glyphs (cairo_gl_surface_t *dst, int dst_x, int dst_y, cairo_operator_t op, const cairo_pattern_t *source, cairo_glyph_t *glyphs, int num_glyphs, const cairo_rectangle_int_t *glyph_extents, cairo_scaled_font_t *scaled_font, cairo_region_t *clip_region, int *remaining_glyphs) { cairo_format_t last_format = (cairo_format_t) -1; cairo_gl_glyph_cache_t *cache = NULL; cairo_gl_context_t *ctx; cairo_gl_glyphs_setup_t setup; cairo_gl_composite_setup_t composite_setup; cairo_status_t status; int i = 0; GLuint vbo = 0; status = _cairo_gl_operand_init (&composite_setup.src, source, dst, glyph_extents->x, glyph_extents->y, dst_x, dst_y, glyph_extents->width, glyph_extents->height); if (unlikely (status)) return status; ctx = _cairo_gl_context_acquire (dst->ctx); /* Set up the mask to source from the incoming vertex color. */ glActiveTexture (GL_TEXTURE1); glEnable (GL_TEXTURE_2D); /* IN: dst.argb = src.argb * mask.aaaa */ glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE); glTexEnvi (GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_MODULATE); glTexEnvi (GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_MODULATE); glTexEnvi (GL_TEXTURE_ENV, GL_SRC0_RGB, GL_PREVIOUS); glTexEnvi (GL_TEXTURE_ENV, GL_SRC0_ALPHA, GL_PREVIOUS); glTexEnvi (GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_SRC_COLOR); glTexEnvi (GL_TEXTURE_ENV, GL_OPERAND0_ALPHA, GL_SRC_ALPHA); glTexEnvi (GL_TEXTURE_ENV, GL_SRC1_RGB, GL_TEXTURE1); glTexEnvi (GL_TEXTURE_ENV, GL_SRC1_ALPHA, GL_TEXTURE1); glTexEnvi (GL_TEXTURE_ENV, GL_OPERAND1_RGB, GL_SRC_ALPHA); glTexEnvi (GL_TEXTURE_ENV, GL_OPERAND1_ALPHA, GL_SRC_ALPHA); _cairo_gl_set_destination (dst); _cairo_gl_set_operator (dst, op); _cairo_gl_set_src_operand (ctx, &composite_setup); _cairo_scaled_font_freeze_cache (scaled_font); if (! _cairo_gl_surface_owns_font (dst, scaled_font)) { status = CAIRO_INT_STATUS_UNSUPPORTED; goto CLEANUP_FONT; } if (scaled_font->surface_private == NULL) { /* XXX couple into list to remove on context destruction */ scaled_font->surface_private = ctx; scaled_font->surface_backend = &_cairo_gl_surface_backend; } /* Create our VBO so that we can accumulate a bunch of glyph primitives * into one giant DrawArrays. */ memset(&setup, 0, sizeof(setup)); setup.composite = &composite_setup; setup.clip = clip_region; setup.dst = dst; setup.vertex_size = 4; if (composite_setup.src.type == OPERAND_TEXTURE) setup.vertex_size += 2; setup.vbo_size = num_glyphs * 4 * setup.vertex_size; if (setup.vbo_size > 4096) setup.vbo_size = 4096; glGenBuffersARB (1, &vbo); glBindBufferARB (GL_ARRAY_BUFFER_ARB, vbo); glVertexPointer (2, GL_FLOAT, setup.vertex_size * sizeof (GLfloat), (void *)(uintptr_t)(0)); glEnableClientState (GL_VERTEX_ARRAY); if (composite_setup.src.type == OPERAND_TEXTURE) { /* Note that we're packing texcoord 0 after texcoord 1, for * convenience. */ glClientActiveTexture (GL_TEXTURE0); glTexCoordPointer (2, GL_FLOAT, setup.vertex_size * sizeof (GLfloat), (void *)(uintptr_t)(4 * sizeof (GLfloat))); glEnableClientState (GL_TEXTURE_COORD_ARRAY); } glClientActiveTexture (GL_TEXTURE1); glTexCoordPointer (2, GL_FLOAT, setup.vertex_size * sizeof (GLfloat), (void *)(uintptr_t)(2 * sizeof (GLfloat))); glEnableClientState (GL_TEXTURE_COORD_ARRAY); for (i = 0; i < num_glyphs; i++) { cairo_scaled_glyph_t *scaled_glyph; double x_offset, y_offset; double x1, x2, y1, y2; status = _cairo_scaled_glyph_lookup (scaled_font, glyphs[i].index, CAIRO_SCALED_GLYPH_INFO_SURFACE, &scaled_glyph); if (unlikely (status)) goto FINISH; if (scaled_glyph->surface->width == 0 || scaled_glyph->surface->height == 0) { continue; } if (scaled_glyph->surface->width > GLYPH_CACHE_MAX_SIZE || scaled_glyph->surface->height > GLYPH_CACHE_MAX_SIZE) { status = CAIRO_INT_STATUS_UNSUPPORTED; goto FINISH; } if (scaled_glyph->surface->format != last_format) { /* Switching textures, so flush any queued prims. */ _cairo_gl_flush_glyphs (ctx, &setup); glActiveTexture (GL_TEXTURE1); cache = cairo_gl_context_get_glyph_cache (ctx, scaled_glyph->surface->format); glBindTexture (GL_TEXTURE_2D, cache->tex); last_format = scaled_glyph->surface->format; } if (scaled_glyph->surface_private == NULL) { status = _cairo_gl_glyph_cache_add_glyph (cache, scaled_glyph); if (unlikely (_cairo_status_is_error (status))) goto FINISH; if (status == CAIRO_INT_STATUS_UNSUPPORTED) { /* Cache is full, so flush existing prims and try again. */ _cairo_gl_flush_glyphs (ctx, &setup); _cairo_gl_glyph_cache_unlock (cache); } status = _cairo_gl_glyph_cache_add_glyph (cache, scaled_glyph); if (unlikely (status)) goto FINISH; } x_offset = scaled_glyph->surface->base.device_transform.x0; y_offset = scaled_glyph->surface->base.device_transform.y0; x1 = _cairo_lround (glyphs[i].x - x_offset); y1 = _cairo_lround (glyphs[i].y - y_offset); x2 = x1 + scaled_glyph->surface->width; y2 = y1 + scaled_glyph->surface->height; _cairo_gl_emit_glyph_rectangle (ctx, &setup, x1, y1, x2, y2, _cairo_gl_glyph_cache_lock (cache, scaled_glyph)); } status = CAIRO_STATUS_SUCCESS; FINISH: _cairo_gl_flush_glyphs (ctx, &setup); CLEANUP_FONT: _cairo_scaled_font_thaw_cache (scaled_font); glDisable (GL_BLEND); glDisable (GL_SCISSOR_TEST); glDisableClientState (GL_VERTEX_ARRAY); glClientActiveTexture (GL_TEXTURE0); glDisableClientState (GL_TEXTURE_COORD_ARRAY); glActiveTexture (GL_TEXTURE0); glDisable (GL_TEXTURE_2D); glClientActiveTexture (GL_TEXTURE1); glDisableClientState (GL_TEXTURE_COORD_ARRAY); glActiveTexture (GL_TEXTURE1); glDisable (GL_TEXTURE_2D); if (vbo != 0) { glBindBufferARB (GL_ARRAY_BUFFER_ARB, 0); glDeleteBuffersARB (1, &vbo); } _cairo_gl_context_release (ctx); _cairo_gl_operand_destroy (&composite_setup.src); *remaining_glyphs = num_glyphs - i; return status; }