/**************************************************************************
*
* Copyright 2009 VMware, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include "paint.h"
#include "matrix.h"
#include "image.h"
#include "pipe/p_compiler.h"
#include "util/u_inlines.h"
#include "util/u_memory.h"
#include "util/u_math.h"
#include "util/u_sampler.h"
#include "cso_cache/cso_context.h"
struct vg_paint {
struct vg_object base;
VGPaintType type;
struct {
VGfloat color[4];
VGint colori[4];
} solid;
struct {
VGColorRampSpreadMode spread;
VGuint color_data[1024];
struct {
VGfloat coords[4];
VGint coordsi[4];
} linear;
struct {
VGfloat vals[5];
VGint valsi[5];
} radial;
struct pipe_sampler_view *sampler_view;
struct pipe_sampler_state sampler;
VGfloat *ramp_stops;
VGint *ramp_stopsi;
VGint num_stops;
VGboolean color_ramps_premultiplied;
} gradient;
struct {
struct pipe_sampler_view *sampler_view;
VGTilingMode tiling_mode;
struct pipe_sampler_state sampler;
} pattern;
/* XXX next 3 all unneded? */
struct pipe_resource *cbuf;
struct pipe_shader_state fs_state;
void *fs;
};
static INLINE VGuint mix_pixels(VGuint p1, VGuint a, VGuint p2, VGuint b)
{
VGuint t = (p1 & 0xff00ff) * a + (p2 & 0xff00ff) * b;
t >>= 8; t &= 0xff00ff;
p1 = ((p1 >> 8) & 0xff00ff) * a + ((p2 >> 8) & 0xff00ff) * b;
p1 &= 0xff00ff00; p1 |= t;
return p1;
}
static INLINE VGuint float4_to_argb(const VGfloat *clr)
{
return float_to_ubyte(clr[3]) << 24 |
float_to_ubyte(clr[0]) << 16 |
float_to_ubyte(clr[1]) << 8 |
float_to_ubyte(clr[2]) << 0;
}
static INLINE void create_gradient_data(const VGfloat *ramp_stops,
VGint num,
VGuint *data,
VGint size)
{
VGint i;
VGint pos = 0;
VGfloat fpos = 0, incr = 1.f / size;
VGuint last_color;
while (fpos < ramp_stops[0]) {
data[pos] = float4_to_argb(ramp_stops + 1);
fpos += incr;
++pos;
}
for (i = 0; i < num - 1; ++i) {
VGint rcur = 5 * i;
VGint rnext = 5 * (i + 1);
VGfloat delta = 1.f/(ramp_stops[rnext] - ramp_stops[rcur]);
while (fpos < ramp_stops[rnext] && pos < size) {
VGint dist = 256 * ((fpos - ramp_stops[rcur]) * delta);
VGint idist = 256 - dist;
VGuint current_color = float4_to_argb(ramp_stops + rcur + 1);
VGuint next_color = float4_to_argb(ramp_stops + rnext + 1);
data[pos] = mix_pixels(current_color, idist,
next_color, dist);
fpos += incr;
++pos;
}
}
last_color = float4_to_argb(ramp_stops + ((num - 1) * 5 + 1));
while (pos < size) {
data[pos] = last_color;
++pos;
}
data[size-1] = last_color;
}
static INLINE struct pipe_resource *create_gradient_texture(struct vg_paint *p)
{
struct pipe_context *pipe = p->base.ctx->pipe;
struct pipe_screen *screen = pipe->screen;
struct pipe_resource *tex = 0;
struct pipe_resource templ;
memset(&templ, 0, sizeof(templ));
templ.target = PIPE_TEXTURE_1D;
templ.format = PIPE_FORMAT_B8G8R8A8_UNORM;
templ.last_level = 0;
templ.width0 = 1024;
templ.height0 = 1;
templ.depth0 = 1;
templ.array_size = 1;
templ.bind = PIPE_BIND_SAMPLER_VIEW;
tex = screen->resource_create(screen, &templ);
{ /* upload color_data */
struct pipe_transfer *transfer =
pipe_get_transfer(p->base.ctx->pipe, tex, 0, 0,
PIPE_TRANSFER_WRITE, 0, 0, 1024, 1);
void *map = pipe->transfer_map(pipe, transfer);
memcpy(map, p->gradient.color_data, sizeof(VGint)*1024);
pipe->transfer_unmap(pipe, transfer);
pipe->transfer_destroy(pipe, transfer);
}
return tex;
}
static INLINE struct pipe_sampler_view *create_gradient_sampler_view(struct vg_paint *p)
{
struct pipe_context *pipe = p->base.ctx->pipe;
struct pipe_resource *texture;
struct pipe_sampler_view view_templ;
struct pipe_sampler_view *view;
texture = create_gradient_texture(p);
if (!texture)
return NULL;
u_sampler_view_default_template(&view_templ, texture, texture->format);
view = pipe->create_sampler_view(pipe, texture, &view_templ);
/* want the texture to go away if the view is freed */
pipe_resource_reference(&texture, NULL);
return view;
}
struct vg_paint * paint_create(struct vg_context *ctx)
{
struct vg_paint *paint = CALLOC_STRUCT(vg_paint);
const VGfloat default_color[] = {0.0f, 0.0f, 0.0f, 1.0f};
const VGfloat def_ling[] = {0.0f, 0.0f, 1.0f, 0.0f};
const VGfloat def_radg[] = {0.0f, 0.0f, 0.0f, 0.0f, 1.0f};
vg_init_object(&paint->base, ctx, VG_OBJECT_PAINT);
vg_context_add_object(ctx, &paint->base);
paint->type = VG_PAINT_TYPE_COLOR;
memcpy(paint->solid.color, default_color,
4 * sizeof(VGfloat));
paint->gradient.spread = VG_COLOR_RAMP_SPREAD_PAD;
memcpy(paint->gradient.linear.coords, def_ling,
4 * sizeof(VGfloat));
memcpy(paint->gradient.radial.vals, def_radg,
5 * sizeof(VGfloat));
paint->gradient.sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
paint->gradient.sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
paint->gradient.sampler.min_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
paint->gradient.sampler.mag_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
paint->gradient.sampler.normalized_coords = 1;
memcpy(&paint->pattern.sampler,
&paint->gradient.sampler,
sizeof(struct pipe_sampler_state));
return paint;
}
void paint_destroy(struct vg_paint *paint)
{
struct vg_context *ctx = paint->base.ctx;
pipe_sampler_view_reference(&paint->gradient.sampler_view, NULL);
if (paint->pattern.sampler_view)
pipe_sampler_view_reference(&paint->pattern.sampler_view, NULL);
if (ctx)
vg_context_remove_object(ctx, &paint->base);
free(paint->gradient.ramp_stopsi);
free(paint->gradient.ramp_stops);
FREE(paint);
}
void paint_set_color(struct vg_paint *paint,
const VGfloat *color)
{
paint->solid.color[0] = color[0];
paint->solid.color[1] = color[1];
paint->solid.color[2] = color[2];
paint->solid.color[3] = color[3];
paint->solid.colori[0] = FLT_TO_INT(color[0]);
paint->solid.colori[1] = FLT_TO_INT(color[1]);
paint->solid.colori[2] = FLT_TO_INT(color[2]);
paint->solid.colori[3] = FLT_TO_INT(color[3]);
}
static INLINE void paint_color_buffer(struct vg_paint *paint, void *buffer)
{
VGfloat *map = (VGfloat*)buffer;
memcpy(buffer, paint->solid.color, 4 * sizeof(VGfloat));
map[4] = 0.f;
map[5] = 1.f;
map[6] = 2.f;
map[7] = 4.f;
}
static INLINE void paint_linear_gradient_buffer(struct vg_paint *paint,
const struct matrix *inv,
void *buffer)
{
VGfloat *map = (VGfloat*)buffer;
VGfloat dd;
map[0] = paint->gradient.linear.coords[2] - paint->gradient.linear.coords[0];
map[1] = paint->gradient.linear.coords[3] - paint->gradient.linear.coords[1];
dd = (map[0] * map[0] + map[1] * map[1]);
map[2] = (dd > 0.0f) ? 1.f / dd : 0.f;
map[3] = 1.f;
map[4] = 0.f;
map[5] = 1.f;
map[6] = 2.f;
map[7] = 4.f;
{
struct matrix mat;
matrix_load_identity(&mat);
/* VEGA_LINEAR_GRADIENT_SHADER expects the first point to be at (0, 0) */
matrix_translate(&mat, -paint->gradient.linear.coords[0], -paint->gradient.linear.coords[1]);
matrix_mult(&mat, inv);
map[8] = mat.m[0]; map[9] = mat.m[3]; map[10] = mat.m[6]; map[11] = 0.f;
map[12] = mat.m[1]; map[13] = mat.m[4]; map[14] = mat.m[7]; map[15] = 0.f;
map[16] = mat.m[2]; map[17] = mat.m[5]; map[18] = mat.m[8]; map[19] = 0.f;
}
#if 0
debug_printf("Coords (%f, %f, %f, %f)\n",
map[0], map[1], map[2], map[3]);
#endif
}
static INLINE void paint_radial_gradient_buffer(struct vg_paint *paint,
const struct matrix *inv,
void *buffer)
{
const VGfloat *center = &paint->gradient.radial.vals[0];
const VGfloat *focal = &paint->gradient.radial.vals[2];
VGfloat rr = paint->gradient.radial.vals[4];
VGfloat *map = (VGfloat*)buffer;
VGfloat dd, new_focal[2];
rr *= rr;
map[0] = center[0] - focal[0];
map[1] = center[1] - focal[1];
dd = map[0] * map[0] + map[1] * map[1];
/* focal point must lie inside the circle */
if (0.998f * rr < dd) {
VGfloat scale;
scale = (dd > 0.0f) ? sqrt(0.998f * rr / dd) : 0.0f;
map[0] *= scale;
map[1] *= scale;
new_focal[0] = center[0] - map[0];
new_focal[1] = center[1] - map[1];
dd = map[0] * map[0] + map[1] * map[1];
focal = new_focal;
}
map[2] = (rr > dd) ? rr - dd : 1.0f;
map[3] = 1.f;
map[4] = 0.f;
map[5] = 1.f;
map[6] = 2.f;
map[7] = 4.f;
{
struct matrix mat;
matrix_load_identity(&mat);
matrix_translate(&mat, -focal[0], -focal[1]);
matrix_mult(&mat, inv);
map[8] = mat.m[0]; map[9] = mat.m[3]; map[10] = mat.m[6]; map[11] = 0.f;
map[12] = mat.m[1]; map[13] = mat.m[4]; map[14] = mat.m[7]; map[15] = 0.f;
map[16] = mat.m[2]; map[17] = mat.m[5]; map[18] = mat.m[8]; map[19] = 0.f;
}
#if 0
debug_printf("Coords (%f, %f, %f, %f)\n",
map[0], map[1], map[2], map[3]);
#endif
}
static INLINE void paint_pattern_buffer(struct vg_paint *paint,
const struct matrix *inv,
void *buffer)
{
VGfloat *map = (VGfloat *)buffer;
memcpy(map, paint->solid.color, 4 * sizeof(VGfloat));
map[4] = 0.f;
map[5] = 1.f;
map[6] = paint->pattern.sampler_view->texture->width0;
map[7] = paint->pattern.sampler_view->texture->height0;
{
struct matrix mat;
memcpy(&mat, inv, sizeof(*inv));
map[8] = mat.m[0]; map[9] = mat.m[3]; map[10] = mat.m[6]; map[11] = 0.f;
map[12] = mat.m[1]; map[13] = mat.m[4]; map[14] = mat.m[7]; map[15] = 0.f;
map[16] = mat.m[2]; map[17] = mat.m[5]; map[18] = mat.m[8]; map[19] = 0.f;
}
}
void paint_set_type(struct vg_paint *paint, VGPaintType type)
{
paint->type = type;
}
void paint_set_ramp_stops(struct vg_paint *paint, const VGfloat *stops,
int num)
{
const VGfloat default_stops[] = {0.0f, 0.0f, 0.0f, 0.0f, 1.0f,
1.0f, 1.0f, 1.0f, 1.0f, 1.0f};
VGint i;
const VGint num_stops = num / 5;
VGfloat last_coord;
paint->gradient.num_stops = num;
if (num) {
free(paint->gradient.ramp_stops);
paint->gradient.ramp_stops = malloc(sizeof(VGfloat)*num);
memcpy(paint->gradient.ramp_stops, stops, sizeof(VGfloat)*num);
} else
return;
/* stops must be in increasing order. the last stop is 1.0. if the
* first one is bigger than 1 then the whole sequence is invalid*/
if (stops[0] > 1) {
stops = default_stops;
num = 10;
}
last_coord = stops[0];
for (i = 1; i < num_stops; ++i) {
VGint idx = 5 * i;
VGfloat coord = stops[idx];
if (!floatsEqual(last_coord, coord) && coord < last_coord) {
stops = default_stops;
num = 10;
break;
}
last_coord = coord;
}
create_gradient_data(stops, num / 5, paint->gradient.color_data,
1024);
if (paint->gradient.sampler_view) {
pipe_sampler_view_reference(&paint->gradient.sampler_view, NULL);
paint->gradient.sampler_view = NULL;
}
paint->gradient.sampler_view = create_gradient_sampler_view(paint);
}
void paint_set_colori(struct vg_paint *p,
VGuint rgba)
{
p->solid.color[0] = ((rgba >> 24) & 0xff) / 255.f;
p->solid.color[1] = ((rgba >> 16) & 0xff) / 255.f;
p->solid.color[2] = ((rgba >> 8) & 0xff) / 255.f;
p->solid.color[3] = ((rgba >> 0) & 0xff) / 255.f;
}
VGuint paint_colori(struct vg_paint *p)
{
#define F2B(f) (float_to_ubyte(f))
return ((F2B(p->solid.color[0]) << 24) |
(F2B(p->solid.color[1]) << 16) |
(F2B(p->solid.color[2]) << 8) |
(F2B(p->solid.color[3]) << 0));
#undef F2B
}
void paint_set_linear_gradient(struct vg_paint *paint,
const VGfloat *coords)
{
memcpy(paint->gradient.linear.coords, coords, sizeof(VGfloat) * 4);
}
void paint_set_spread_mode(struct vg_paint *paint,
VGint mode)
{
paint->gradient.spread = mode;
switch(mode) {
case VG_COLOR_RAMP_SPREAD_PAD:
paint->gradient.sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
break;
case VG_COLOR_RAMP_SPREAD_REPEAT:
paint->gradient.sampler.wrap_s = PIPE_TEX_WRAP_REPEAT;
break;
case VG_COLOR_RAMP_SPREAD_REFLECT:
paint->gradient.sampler.wrap_s = PIPE_TEX_WRAP_MIRROR_REPEAT;
break;
}
}
VGColorRampSpreadMode paint_spread_mode(struct vg_paint *paint)
{
return paint->gradient.spread;
}
void paint_set_radial_gradient(struct vg_paint *paint,
const VGfloat *values)
{
memcpy(paint->gradient.radial.vals, values, sizeof(VGfloat) * 5);
}
void paint_set_pattern(struct vg_paint *paint,
struct vg_image *img)
{
if (paint->pattern.sampler_view)
pipe_sampler_view_reference(&paint->pattern.sampler_view, NULL);
paint->pattern.sampler_view = NULL;
pipe_sampler_view_reference(&paint->pattern.sampler_view,
img->sampler_view);
}
void paint_set_pattern_tiling(struct vg_paint *paint,
VGTilingMode mode)
{
paint->pattern.tiling_mode = mode;
switch(mode) {
case VG_TILE_FILL:
paint->pattern.sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_BORDER;
paint->pattern.sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_BORDER;
break;
case VG_TILE_PAD:
paint->pattern.sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
paint->pattern.sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
break;
case VG_TILE_REPEAT:
paint->pattern.sampler.wrap_s = PIPE_TEX_WRAP_REPEAT;
paint->pattern.sampler.wrap_t = PIPE_TEX_WRAP_REPEAT;
break;
case VG_TILE_REFLECT:
paint->pattern.sampler.wrap_s = PIPE_TEX_WRAP_MIRROR_REPEAT;
paint->pattern.sampler.wrap_t = PIPE_TEX_WRAP_MIRROR_REPEAT;
break;
default:
debug_assert("!Unknown tiling mode");
}
}
void paint_get_color(struct vg_paint *paint,
VGfloat *color)
{
color[0] = paint->solid.color[0];
color[1] = paint->solid.color[1];
color[2] = paint->solid.color[2];
color[3] = paint->solid.color[3];
}
void paint_ramp_stops(struct vg_paint *paint, VGfloat *stops,
int num)
{
memcpy(stops, paint->gradient.ramp_stops, sizeof(VGfloat)*num);
}
void paint_linear_gradient(struct vg_paint *paint,
VGfloat *coords)
{
memcpy(coords, paint->gradient.linear.coords, sizeof(VGfloat)*4);
}
void paint_radial_gradient(struct vg_paint *paint,
VGfloat *coords)
{
memcpy(coords, paint->gradient.radial.vals, sizeof(VGfloat)*5);
}
int paint_num_ramp_stops(struct vg_paint *paint)
{
return paint->gradient.num_stops;
}
VGPaintType paint_type(struct vg_paint *paint)
{
return paint->type;
}
void paint_set_coloriv(struct vg_paint *paint,
const VGint *color)
{
paint->solid.color[0] = color[0];
paint->solid.color[1] = color[1];
paint->solid.color[2] = color[2];
paint->solid.color[3] = color[3];
paint->solid.colori[0] = color[0];
paint->solid.colori[1] = color[1];
paint->solid.colori[2] = color[2];
paint->solid.colori[3] = color[3];
}
void paint_get_coloriv(struct vg_paint *paint,
VGint *color)
{
color[0] = paint->solid.colori[0];
color[1] = paint->solid.colori[1];
color[2] = paint->solid.colori[2];
color[3] = paint->solid.colori[3];
}
void paint_set_color_ramp_premultiplied(struct vg_paint *paint,
VGboolean set)
{
paint->gradient.color_ramps_premultiplied = set;
}
VGboolean paint_color_ramp_premultiplied(struct vg_paint *paint)
{
return paint->gradient.color_ramps_premultiplied;
}
void paint_set_ramp_stopsi(struct vg_paint *paint, const VGint *stops,
int num)
{
if (num) {
free(paint->gradient.ramp_stopsi);
paint->gradient.ramp_stopsi = malloc(sizeof(VGint)*num);
memcpy(paint->gradient.ramp_stopsi, stops, sizeof(VGint)*num);
}
}
void paint_ramp_stopsi(struct vg_paint *paint, VGint *stops,
int num)
{
memcpy(stops, paint->gradient.ramp_stopsi, sizeof(VGint)*num);
}
void paint_set_linear_gradienti(struct vg_paint *paint,
const VGint *coords)
{
memcpy(paint->gradient.linear.coordsi, coords, sizeof(VGint) * 4);
}
void paint_linear_gradienti(struct vg_paint *paint,
VGint *coords)
{
memcpy(coords, paint->gradient.linear.coordsi, sizeof(VGint)*4);
}
void paint_set_radial_gradienti(struct vg_paint *paint,
const VGint *values)
{
memcpy(paint->gradient.radial.valsi, values, sizeof(VGint) * 5);
}
void paint_radial_gradienti(struct vg_paint *paint,
VGint *coords)
{
memcpy(coords, paint->gradient.radial.valsi, sizeof(VGint)*5);
}
VGTilingMode paint_pattern_tiling(struct vg_paint *paint)
{
return paint->pattern.tiling_mode;
}
VGint paint_bind_samplers(struct vg_paint *paint, struct pipe_sampler_state **samplers,
struct pipe_sampler_view **sampler_views)
{
struct vg_context *ctx = vg_current_context();
switch(paint->type) {
case VG_PAINT_TYPE_LINEAR_GRADIENT:
case VG_PAINT_TYPE_RADIAL_GRADIENT: {
if (paint->gradient.sampler_view) {
paint->gradient.sampler.min_img_filter = image_sampler_filter(ctx);
paint->gradient.sampler.mag_img_filter = image_sampler_filter(ctx);
samplers[0] = &paint->gradient.sampler;
sampler_views[0] = paint->gradient.sampler_view;
return 1;
}
}
break;
case VG_PAINT_TYPE_PATTERN: {
memcpy(paint->pattern.sampler.border_color.f,
ctx->state.vg.tile_fill_color,
sizeof(VGfloat) * 4);
paint->pattern.sampler.min_img_filter = image_sampler_filter(ctx);
paint->pattern.sampler.mag_img_filter = image_sampler_filter(ctx);
samplers[0] = &paint->pattern.sampler;
sampler_views[0] = paint->pattern.sampler_view;
return 1;
}
break;
default:
break;
}
return 0;
}
void paint_resolve_type(struct vg_paint *paint)
{
if (paint->type == VG_PAINT_TYPE_PATTERN &&
!paint->pattern.sampler_view) {
paint->type = VG_PAINT_TYPE_COLOR;
}
}
VGboolean paint_is_degenerate(struct vg_paint *paint)
{
VGboolean degen;
VGfloat *vals;
switch (paint->type) {
case VG_PAINT_TYPE_LINEAR_GRADIENT:
vals = paint->gradient.linear.coords;
/* two points are coincident */
degen = (floatsEqual(vals[0], vals[2]) &&
floatsEqual(vals[1], vals[3]));
break;
case VG_PAINT_TYPE_RADIAL_GRADIENT:
vals = paint->gradient.radial.vals;
/* radius <= 0 */
degen = (vals[4] <= 0.0f);
break;
case VG_PAINT_TYPE_COLOR:
case VG_PAINT_TYPE_PATTERN:
default:
degen = VG_FALSE;
break;
}
return degen;
}
VGint paint_constant_buffer_size(struct vg_paint *paint)
{
switch(paint->type) {
case VG_PAINT_TYPE_COLOR:
return 8 * sizeof(VGfloat);/*4 color + 4 constants (0.f,1.f,2.f,4.f)*/
break;
case VG_PAINT_TYPE_LINEAR_GRADIENT:
return 20 * sizeof(VGfloat);
break;
case VG_PAINT_TYPE_RADIAL_GRADIENT:
return 20 * sizeof(VGfloat);
break;
case VG_PAINT_TYPE_PATTERN:
return 20 * sizeof(VGfloat);
break;
default:
debug_printf("Uknown paint type: %d\n", paint->type);
}
return 0;
}
void paint_fill_constant_buffer(struct vg_paint *paint,
const struct matrix *mat,
void *buffer)
{
switch(paint->type) {
case VG_PAINT_TYPE_COLOR:
paint_color_buffer(paint, buffer);
break;
case VG_PAINT_TYPE_LINEAR_GRADIENT:
paint_linear_gradient_buffer(paint, mat, buffer);
break;
case VG_PAINT_TYPE_RADIAL_GRADIENT:
paint_radial_gradient_buffer(paint, mat, buffer);
break;
case VG_PAINT_TYPE_PATTERN:
paint_pattern_buffer(paint, mat, buffer);
break;
default:
abort();
}
}
VGboolean paint_is_opaque(struct vg_paint *paint)
{
/* TODO add other paint types and make sure PAINT_DIRTY gets set */
return (paint->type == VG_PAINT_TYPE_COLOR &&
floatsEqual(paint->solid.color[3], 1.0f));
}