+++ /dev/null
-/**************************************************************************
- *
- * 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;
- void *map =
- pipe_transfer_map(p->base.ctx->pipe, tex, 0, 0,
- PIPE_TRANSFER_WRITE, 0, 0, 1024, 1,
- &transfer);
- memcpy(map, p->gradient.color_data, sizeof(VGint)*1024);
- pipe->transfer_unmap(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);
- vg_free_object(&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));
-}
projects / mesa.git / blobdiff