static cairo_status_t render_glyphs (cairo_gl_surface_t *dst, int dst_x, int dst_y, cairo_operator_t op, cairo_surface_t *source, cairo_composite_glyphs_info_t *info, cairo_bool_t *has_component_alpha, cairo_clip_t *clip) { cairo_format_t last_format = CAIRO_FORMAT_INVALID; cairo_gl_glyph_cache_t *cache = NULL; cairo_gl_context_t *ctx; cairo_gl_emit_glyph_t emit = NULL; cairo_gl_composite_t setup; cairo_int_status_t status; int i = 0; TRACE ((stderr, "%s (%d, %d)x(%d, %d)\n", __FUNCTION__, info->extents.x, info->extents.y, info->extents.width, info->extents.height)); *has_component_alpha = FALSE; status = _cairo_gl_context_acquire (dst->base.device, &ctx); if (unlikely (status)) return status; status = _cairo_gl_composite_init (&setup, op, dst, TRUE); if (unlikely (status)) goto FINISH; if (source == NULL) { _cairo_gl_composite_set_solid_source (&setup, CAIRO_COLOR_WHITE); } else { _cairo_gl_composite_set_source_operand (&setup, source_to_operand (source)); } _cairo_gl_composite_set_clip (&setup, clip); for (i = 0; i < info->num_glyphs; i++) { cairo_scaled_glyph_t *scaled_glyph; cairo_gl_glyph_t *glyph; double x_offset, y_offset; double x1, x2, y1, y2; status = _cairo_scaled_glyph_lookup (info->font, info->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->format != last_format) { status = cairo_gl_context_get_glyph_cache (ctx, scaled_glyph->surface->format, &cache); if (unlikely (status)) goto FINISH; last_format = scaled_glyph->surface->format; _cairo_gl_composite_set_mask_operand (&setup, &cache->surface->operand); *has_component_alpha |= cache->surface->operand.texture.attributes.has_component_alpha; /* XXX Shoot me. */ status = _cairo_gl_composite_begin (&setup, &ctx); status = _cairo_gl_context_release (ctx, status); if (unlikely (status)) goto FINISH; emit = _cairo_gl_context_choose_emit_glyph (ctx); } if (scaled_glyph->dev_private_key != cache) { cairo_scaled_glyph_private_t *priv; priv = _cairo_scaled_glyph_find_private (scaled_glyph, cache); if (priv) { scaled_glyph->dev_private_key = cache; scaled_glyph->dev_private = cairo_container_of (priv, cairo_gl_glyph_t, base); } else { status = _cairo_gl_glyph_cache_add_glyph (ctx, cache, scaled_glyph); if (status == CAIRO_INT_STATUS_UNSUPPORTED) { /* Cache is full, so flush existing prims and try again. */ _cairo_gl_composite_flush (ctx); _cairo_gl_glyph_cache_unlock (cache); status = _cairo_gl_glyph_cache_add_glyph (ctx, cache, scaled_glyph); } if (unlikely (_cairo_int_status_is_error (status))) goto FINISH; } } x_offset = scaled_glyph->surface->base.device_transform.x0; y_offset = scaled_glyph->surface->base.device_transform.y0; x1 = _cairo_lround (info->glyphs[i].x - x_offset - dst_x); y1 = _cairo_lround (info->glyphs[i].y - y_offset - dst_y); x2 = x1 + scaled_glyph->surface->width; y2 = y1 + scaled_glyph->surface->height; glyph = _cairo_gl_glyph_cache_lock (cache, scaled_glyph); assert (emit); emit (ctx, x1, y1, x2, y2, glyph->p1.x, glyph->p1.y, glyph->p2.x, glyph->p2.y); } status = CAIRO_STATUS_SUCCESS; FINISH: status = _cairo_gl_context_release (ctx, status); _cairo_gl_composite_fini (&setup); return status; }
static cairo_status_t render_glyphs (cairo_gl_surface_t *dst, int dst_x, int dst_y, cairo_operator_t op, cairo_surface_t *source, cairo_composite_glyphs_info_t *info, cairo_bool_t *has_component_alpha, cairo_clip_t *clip, cairo_bool_t via_msaa_compositor) { cairo_format_t last_format = CAIRO_FORMAT_INVALID; cairo_gl_glyph_cache_t *cache = NULL; cairo_gl_context_t *ctx; cairo_gl_composite_t setup; cairo_int_status_t status; int i = 0; cairo_bool_t is_argb32; TRACE ((stderr, "%s (%d, %d)x(%d, %d)\n", __FUNCTION__, info->extents.x, info->extents.y, info->extents.width, info->extents.height)); *has_component_alpha = FALSE; status = _cairo_gl_context_acquire (dst->base.device, &ctx); if (unlikely (status)) return status; /* Traps compositor never has CLEAR operator. */ is_argb32 = info->font->options.antialias == CAIRO_ANTIALIAS_SUBPIXEL || info->font->options.antialias == CAIRO_ANTIALIAS_BEST; /* If we are invoked by traps compositor, we keep what is in code otherwise, we handle non-subpixel/best directly in msaa compositor. */ if (!via_msaa_compositor) status = _cairo_gl_composite_init (&setup, op, dst, TRUE); else if (info->font->options.antialias == CAIRO_ANTIALIAS_SUBPIXEL || info->font->options.antialias == CAIRO_ANTIALIAS_BEST) status = _cairo_gl_composite_init (&setup, op, dst, TRUE); else status = _cairo_gl_composite_init (&setup, op, dst, FALSE); if (unlikely (status)) goto FINISH; if (source == NULL) { _cairo_gl_composite_set_solid_source (&setup, CAIRO_COLOR_WHITE); } else { _cairo_gl_composite_set_source_operand (&setup, source_to_operand (source)); } if (setup.src.type == CAIRO_GL_OPERAND_CONSTANT) setup.src.use_color_attribute = TRUE; _cairo_gl_composite_set_clip (&setup, clip); for (i = 0; i < info->num_glyphs; i++) { cairo_scaled_glyph_t *scaled_glyph; cairo_gl_glyph_t *glyph; double x_offset, y_offset; double x1, x2, y1, y2; status = _cairo_scaled_glyph_lookup (info->font, info->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->format != last_format) { status = cairo_gl_context_get_glyph_cache (ctx, scaled_glyph->surface->format, &cache); if (unlikely (status)) goto FINISH; last_format = scaled_glyph->surface->format; /* In msaa compositor, clear operator needs component alpha, we need to reset to FALSE if previously clear operator has set it to TRUE. */ if (via_msaa_compositor) { if (op == CAIRO_OPERATOR_CLEAR || is_argb32) cache->surface->operand.texture.attributes.has_component_alpha = TRUE; else cache->surface->operand.texture.attributes.has_component_alpha = FALSE; } _cairo_gl_composite_set_mask_operand (&setup, &cache->surface->operand); *has_component_alpha |= cache->surface->operand.texture.attributes.has_component_alpha; /* XXX Shoot me. */ status = _cairo_gl_composite_begin (&setup, &ctx); status = _cairo_gl_context_release (ctx, status); if (unlikely (status)) goto FINISH; } if (scaled_glyph->dev_private_key != cache) { cairo_scaled_glyph_private_t *priv; priv = _cairo_scaled_glyph_find_private (scaled_glyph, cache); if (priv) { scaled_glyph->dev_private_key = cache; scaled_glyph->dev_private = cairo_container_of (priv, cairo_gl_glyph_t, base); } else { status = _cairo_gl_glyph_cache_add_glyph (ctx, cache, scaled_glyph); if (status == CAIRO_INT_STATUS_UNSUPPORTED) { /* Cache is full, so flush existing prims and try again. */ _cairo_gl_composite_flush (ctx); _cairo_gl_glyph_cache_unlock (cache); status = _cairo_gl_glyph_cache_add_glyph (ctx, cache, scaled_glyph); } if (unlikely (_cairo_int_status_is_error (status))) goto FINISH; } } x_offset = scaled_glyph->surface->base.device_transform.x0; y_offset = scaled_glyph->surface->base.device_transform.y0; x1 = _cairo_lround (info->glyphs[i].x - x_offset - dst_x); y1 = _cairo_lround (info->glyphs[i].y - y_offset - dst_y); x2 = x1 + scaled_glyph->surface->width; y2 = y1 + scaled_glyph->surface->height; glyph = _cairo_gl_glyph_cache_lock (cache, scaled_glyph); _cairo_gl_composite_emit_glyph (ctx, x1, y1, x2, y2, glyph->p1.x, glyph->p1.y, glyph->p2.x, glyph->p2.y); } status = CAIRO_STATUS_SUCCESS; FINISH: status = _cairo_gl_context_release (ctx, status); _cairo_gl_composite_fini (&setup); return status; }
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; }