static cairo_int_status_t
_cairo_gl_surface_fill_alpha_channel (cairo_gl_surface_t *dst,
cairo_gl_context_t *ctx,
int x, int y,
int width, int height)
{
cairo_gl_composite_t setup;
cairo_status_t status;
_cairo_gl_composite_flush (ctx);
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_TRUE);
status = _cairo_gl_composite_init (&setup, CAIRO_OPERATOR_SOURCE, dst,
FALSE, NULL);
if (unlikely (status))
goto CLEANUP;
_cairo_gl_composite_set_solid_source (&setup, CAIRO_COLOR_BLACK);
status = _cairo_gl_composite_begin (&setup, &ctx);
if (unlikely (status))
goto CLEANUP;
_cairo_gl_composite_emit_rect (ctx, x, y, x + width, y + height, 0);
status = _cairo_gl_context_release (ctx, status);
CLEANUP:
_cairo_gl_composite_fini (&setup);
_cairo_gl_composite_flush (ctx);
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
return status;
}
static cairo_int_status_t
fill_boxes (void *_dst,
cairo_operator_t op,
const cairo_color_t *color,
cairo_boxes_t *boxes)
{
cairo_gl_composite_t setup;
cairo_gl_context_t *ctx;
cairo_int_status_t status;
status = _cairo_gl_composite_init (&setup, op, _dst, FALSE);
if (unlikely (status))
goto FAIL;
_cairo_gl_composite_set_solid_source (&setup, color);
status = _cairo_gl_composite_begin (&setup, &ctx);
if (unlikely (status))
goto FAIL;
emit_aligned_boxes (ctx, boxes);
status = _cairo_gl_context_release (ctx, CAIRO_STATUS_SUCCESS);
FAIL:
_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,
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;
}
