/**********************************************************
* Copyright 2009-2011 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, sublicense, 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 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
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* 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.
*
*********************************************************
* Authors:
* Zack Rusin <zackr-at-vmware-dot-com>
* Thomas Hellstrom <thellstrom-at-vmware-dot-com>
*/
#include "xa_composite.h"
#include "xa_context.h"
#include "xa_priv.h"
#include "cso_cache/cso_context.h"
#include "util/u_sampler.h"
#include "util/u_inlines.h"
/*XXX also in Xrender.h but the including it here breaks compilition */
#define XFixedToDouble(f) (((double) (f)) / 65536.)
struct xa_composite_blend {
unsigned op : 8;
unsigned alpha_dst : 4;
unsigned alpha_src : 4;
unsigned rgb_src : 8; /**< PIPE_BLENDFACTOR_x */
unsigned rgb_dst : 8; /**< PIPE_BLENDFACTOR_x */
};
#define XA_BLEND_OP_OVER 3
static const struct xa_composite_blend xa_blends[] = {
{ xa_op_clear,
0, 0, PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ZERO},
{ xa_op_src,
0, 0, PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_ZERO},
{ xa_op_dst,
0, 0, PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ONE},
{ xa_op_over,
0, 1, PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_INV_SRC_ALPHA},
{ xa_op_over_reverse,
1, 0, PIPE_BLENDFACTOR_INV_DST_ALPHA, PIPE_BLENDFACTOR_ONE},
{ xa_op_in,
1, 0, PIPE_BLENDFACTOR_DST_ALPHA, PIPE_BLENDFACTOR_ZERO},
{ xa_op_in_reverse,
0, 1, PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_SRC_ALPHA},
{ xa_op_out,
1, 0, PIPE_BLENDFACTOR_INV_DST_ALPHA, PIPE_BLENDFACTOR_ZERO},
{ xa_op_out_reverse,
0, 1, PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_INV_SRC_ALPHA},
{ xa_op_atop,
1, 1, PIPE_BLENDFACTOR_DST_ALPHA, PIPE_BLENDFACTOR_INV_SRC_ALPHA},
{ xa_op_atop_reverse,
1, 1, PIPE_BLENDFACTOR_INV_DST_ALPHA, PIPE_BLENDFACTOR_SRC_ALPHA},
{ xa_op_xor,
1, 1, PIPE_BLENDFACTOR_INV_DST_ALPHA, PIPE_BLENDFACTOR_INV_SRC_ALPHA},
{ xa_op_add,
0, 0, PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_ONE},
};
/*
* The alpha value stored in a luminance texture is read by the
* hardware as color.
*/
static unsigned
xa_convert_blend_for_luminance(unsigned factor)
{
switch(factor) {
case PIPE_BLENDFACTOR_DST_ALPHA:
return PIPE_BLENDFACTOR_DST_COLOR;
case PIPE_BLENDFACTOR_INV_DST_ALPHA:
return PIPE_BLENDFACTOR_INV_DST_COLOR;
default:
break;
}
return factor;
}
static boolean
blend_for_op(struct xa_composite_blend *blend,
enum xa_composite_op op,
struct xa_picture *src_pic,
struct xa_picture *mask_pic,
struct xa_picture *dst_pic)
{
const int num_blends =
sizeof(xa_blends)/sizeof(struct xa_composite_blend);
int i;
boolean supported = FALSE;
/*
* Temporarily disable component alpha since it appears buggy.
*/
if (mask_pic && mask_pic->component_alpha)
return FALSE;
/*
* our default in case something goes wrong
*/
*blend = xa_blends[XA_BLEND_OP_OVER];
for (i = 0; i < num_blends; ++i) {
if (xa_blends[i].op == op) {
*blend = xa_blends[i];
supported = TRUE;
}
}
if (!dst_pic->srf)
return supported;
if (dst_pic->srf->tex->format == PIPE_FORMAT_L8_UNORM) {
blend->rgb_src = xa_convert_blend_for_luminance(blend->rgb_src);
blend->rgb_dst = xa_convert_blend_for_luminance(blend->rgb_dst);
}
/*
* If there's no dst alpha channel, adjust the blend op so that we'll treat
* it as always 1.
*/
if (xa_format_a(dst_pic->pict_format) == 0 && blend->alpha_dst) {
if (blend->rgb_src == PIPE_BLENDFACTOR_DST_ALPHA)
blend->rgb_src = PIPE_BLENDFACTOR_ONE;
else if (blend->rgb_src == PIPE_BLENDFACTOR_INV_DST_ALPHA)
blend->rgb_src = PIPE_BLENDFACTOR_ZERO;
}
/*
* If the source alpha is being used, then we should only be in a case where
* the source blend factor is 0, and the source blend value is the mask
* channels multiplied by the source picture's alpha.
*/
if (mask_pic && mask_pic->component_alpha &&
xa_format_rgb(mask_pic->pict_format) &&
blend->alpha_src) {
if (blend->rgb_dst == PIPE_BLENDFACTOR_SRC_ALPHA) {
blend->rgb_dst = PIPE_BLENDFACTOR_SRC_COLOR;
} else if (blend->rgb_dst == PIPE_BLENDFACTOR_INV_SRC_ALPHA) {
blend->rgb_dst = PIPE_BLENDFACTOR_INV_SRC_COLOR;
}
}
return supported;
}
static INLINE int
xa_repeat_to_gallium(int mode)
{
switch(mode) {
case xa_wrap_clamp_to_border:
return PIPE_TEX_WRAP_CLAMP_TO_BORDER;
case xa_wrap_repeat:
return PIPE_TEX_WRAP_REPEAT;
case xa_wrap_mirror_repeat:
return PIPE_TEX_WRAP_MIRROR_REPEAT;
case xa_wrap_clamp_to_edge:
return PIPE_TEX_WRAP_CLAMP_TO_EDGE;
default:
break;
}
return PIPE_TEX_WRAP_REPEAT;
}
static INLINE boolean
xa_filter_to_gallium(int xrender_filter, int *out_filter)
{
switch (xrender_filter) {
case xa_filter_nearest:
*out_filter = PIPE_TEX_FILTER_NEAREST;
break;
case xa_filter_linear:
*out_filter = PIPE_TEX_FILTER_LINEAR;
break;
default:
*out_filter = PIPE_TEX_FILTER_NEAREST;
return FALSE;
}
return TRUE;
}
static int
xa_is_filter_accelerated(struct xa_picture *pic)
{
int filter;
if (pic && !xa_filter_to_gallium(pic->filter, &filter))
return 0;
return 1;
}
XA_EXPORT int
xa_composite_check_accelerated(const struct xa_composite *comp)
{
struct xa_composite_blend blend;
struct xa_picture *src_pic = comp->src;
if (!xa_is_filter_accelerated(src_pic) ||
!xa_is_filter_accelerated(comp->mask)) {
return -XA_ERR_INVAL;
}
if (src_pic->src_pict) {
if (src_pic->src_pict->type != xa_src_pict_solid_fill)
return -XA_ERR_INVAL;
/*
* Currently we don't support solid fill with a mask.
* We can easily do that, but that would require shader,
* sampler view setup and vertex setup modification.
*/
if (comp->mask)
return -XA_ERR_INVAL;
}
if (blend_for_op(&blend, comp->op, comp->src, comp->mask, comp->dst)) {
struct xa_picture *mask = comp->mask;
if (mask && mask->component_alpha &&
xa_format_rgb(mask->pict_format)) {
if (blend.alpha_src && blend.rgb_src != PIPE_BLENDFACTOR_ZERO) {
return -XA_ERR_INVAL;
}
}
return XA_ERR_NONE;
}
return -XA_ERR_INVAL;
}
static int
bind_composite_blend_state(struct xa_context *ctx,
const struct xa_composite *comp)
{
struct xa_composite_blend blend_opt;
struct pipe_blend_state blend;
if (!blend_for_op(&blend_opt, comp->op, comp->src, comp->mask, comp->dst))
return -XA_ERR_INVAL;
memset(&blend, 0, sizeof(struct pipe_blend_state));
blend.rt[0].blend_enable = 1;
blend.rt[0].colormask = PIPE_MASK_RGBA;
blend.rt[0].rgb_src_factor = blend_opt.rgb_src;
blend.rt[0].alpha_src_factor = blend_opt.rgb_src;
blend.rt[0].rgb_dst_factor = blend_opt.rgb_dst;
blend.rt[0].alpha_dst_factor = blend_opt.rgb_dst;
cso_set_blend(ctx->cso, &blend);
return XA_ERR_NONE;
}
static unsigned int
picture_format_fixups(struct xa_picture *src_pic,
int mask)
{
boolean set_alpha = FALSE;
boolean swizzle = FALSE;
unsigned ret = 0;
struct xa_surface *src = src_pic->srf;
enum xa_formats src_hw_format, src_pic_format;
enum xa_surface_type src_hw_type, src_pic_type;
if (!src)
return 0;
src_hw_format = xa_surface_format(src);
src_pic_format = src_pic->pict_format;
set_alpha = (xa_format_type_is_color(src_pic_format) &&
xa_format_a(src_pic_format) == 0);
if (set_alpha)
ret |= mask ? FS_MASK_SET_ALPHA : FS_SRC_SET_ALPHA;
if (src_hw_format == src_pic_format) {
if (src->tex->format == PIPE_FORMAT_L8_UNORM)
return ((mask) ? FS_MASK_LUMINANCE : FS_SRC_LUMINANCE);
return ret;
}
src_hw_type = xa_format_type(src_hw_format);
src_pic_type = xa_format_type(src_pic_format);
swizzle = ((src_hw_type == xa_type_argb &&
src_pic_type == xa_type_abgr) ||
((src_hw_type == xa_type_abgr &&
src_pic_type == xa_type_argb)));
if (!swizzle && (src_hw_type != src_pic_type))
return ret;
if (swizzle)
ret |= mask ? FS_MASK_SWIZZLE_RGB : FS_SRC_SWIZZLE_RGB;
return ret;
}
static int
bind_shaders(struct xa_context *ctx, const struct xa_composite *comp)
{
unsigned vs_traits = 0, fs_traits = 0;
struct xa_shader shader;
struct xa_picture *src_pic = comp->src;
struct xa_picture *mask_pic = comp->mask;
ctx->has_solid_color = FALSE;
if (src_pic) {
if (src_pic->wrap == xa_wrap_clamp_to_border && src_pic->has_transform)
fs_traits |= FS_SRC_REPEAT_NONE;
if (src_pic->src_pict) {
if (src_pic->src_pict->type == xa_src_pict_solid_fill) {
fs_traits |= FS_SOLID_FILL | FS_FILL;
vs_traits |= VS_SOLID_FILL;
xa_pixel_to_float4(src_pic->src_pict->solid_fill.color,
ctx->solid_color);
ctx->has_solid_color = TRUE;
}
} else {
fs_traits |= FS_COMPOSITE;
vs_traits |= VS_COMPOSITE;
}
fs_traits |= picture_format_fixups(src_pic, 0);
}
if (mask_pic) {
vs_traits |= VS_MASK;
fs_traits |= FS_MASK;
if (mask_pic->wrap == xa_wrap_clamp_to_border &&
mask_pic->has_transform)
fs_traits |= FS_MASK_REPEAT_NONE;
if (mask_pic->component_alpha) {
struct xa_composite_blend blend;
if (!blend_for_op(&blend, comp->op, src_pic, mask_pic, NULL))
return -XA_ERR_INVAL;
if (blend.alpha_src) {
fs_traits |= FS_CA_SRCALPHA;
} else
fs_traits |= FS_CA_FULL;
}
fs_traits |= picture_format_fixups(mask_pic, 1);
}
if (ctx->srf->format == PIPE_FORMAT_L8_UNORM)
fs_traits |= FS_DST_LUMINANCE;
shader = xa_shaders_get(ctx->shaders, vs_traits, fs_traits);
cso_set_vertex_shader_handle(ctx->cso, shader.vs);
cso_set_fragment_shader_handle(ctx->cso, shader.fs);
return XA_ERR_NONE;
}
static void
bind_samplers(struct xa_context *ctx,
const struct xa_composite *comp)
{
struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
struct pipe_sampler_state src_sampler, mask_sampler;
struct pipe_sampler_view view_templ;
struct pipe_sampler_view *src_view;
struct pipe_context *pipe = ctx->pipe;
struct xa_picture *src_pic = comp->src;
struct xa_picture *mask_pic = comp->mask;
ctx->num_bound_samplers = 0;
memset(&src_sampler, 0, sizeof(struct pipe_sampler_state));
memset(&mask_sampler, 0, sizeof(struct pipe_sampler_state));
if (src_pic) {
if (ctx->has_solid_color) {
samplers[0] = NULL;
pipe_sampler_view_reference(&ctx->bound_sampler_views[0], NULL);
} else {
unsigned src_wrap = xa_repeat_to_gallium(src_pic->wrap);
int filter;
(void) xa_filter_to_gallium(src_pic->filter, &filter);
src_sampler.wrap_s = src_wrap;
src_sampler.wrap_t = src_wrap;
src_sampler.min_img_filter = filter;
src_sampler.mag_img_filter = filter;
src_sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
src_sampler.normalized_coords = 1;
samplers[0] = &src_sampler;
ctx->num_bound_samplers = 1;
u_sampler_view_default_template(&view_templ,
src_pic->srf->tex,
src_pic->srf->tex->format);
src_view = pipe->create_sampler_view(pipe, src_pic->srf->tex,
&view_templ);
pipe_sampler_view_reference(&ctx->bound_sampler_views[0], NULL);
ctx->bound_sampler_views[0] = src_view;
}
}
if (mask_pic) {
unsigned mask_wrap = xa_repeat_to_gallium(mask_pic->wrap);
int filter;
(void) xa_filter_to_gallium(mask_pic->filter, &filter);
mask_sampler.wrap_s = mask_wrap;
mask_sampler.wrap_t = mask_wrap;
mask_sampler.min_img_filter = filter;
mask_sampler.mag_img_filter = filter;
src_sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
mask_sampler.normalized_coords = 1;
samplers[1] = &mask_sampler;
ctx->num_bound_samplers = 2;
u_sampler_view_default_template(&view_templ,
mask_pic->srf->tex,
mask_pic->srf->tex->format);
src_view = pipe->create_sampler_view(pipe, mask_pic->srf->tex,
&view_templ);
pipe_sampler_view_reference(&ctx->bound_sampler_views[1], NULL);
ctx->bound_sampler_views[1] = src_view;
/*
* If src is a solid color, we have no src view, so set up a
* dummy one that will not be used anyway.
*/
if (ctx->bound_sampler_views[0] == NULL)
pipe_sampler_view_reference(&ctx->bound_sampler_views[0],
src_view);
}
cso_set_samplers(ctx->cso, PIPE_SHADER_FRAGMENT, ctx->num_bound_samplers,
(const struct pipe_sampler_state **)samplers);
cso_set_sampler_views(ctx->cso, PIPE_SHADER_FRAGMENT, ctx->num_bound_samplers,
ctx->bound_sampler_views);
}
XA_EXPORT int
xa_composite_prepare(struct xa_context *ctx,
const struct xa_composite *comp)
{
struct xa_surface *dst_srf = comp->dst->srf;
int ret;
ret = xa_ctx_srf_create(ctx, dst_srf);
if (ret != XA_ERR_NONE)
return ret;
ctx->dst = dst_srf;
renderer_bind_destination(ctx, ctx->srf, ctx->srf->width,
ctx->srf->height);
ret = bind_composite_blend_state(ctx, comp);
if (ret != XA_ERR_NONE)
return ret;
ret = bind_shaders(ctx, comp);
if (ret != XA_ERR_NONE)
return ret;
bind_samplers(ctx, comp);
if (ctx->num_bound_samplers == 0 ) { /* solid fill */
renderer_begin_solid(ctx);
} else {
renderer_begin_textures(ctx);
ctx->comp = comp;
}
xa_ctx_srf_destroy(ctx);
return XA_ERR_NONE;
}
XA_EXPORT void
xa_composite_rect(struct xa_context *ctx,
int srcX, int srcY, int maskX, int maskY,
int dstX, int dstY, int width, int height)
{
if (ctx->num_bound_samplers == 0 ) { /* solid fill */
renderer_solid(ctx, dstX, dstY, dstX + width, dstY + height,
ctx->solid_color);
} else {
const struct xa_composite *comp = ctx->comp;
int pos[6] = {srcX, srcY, maskX, maskY, dstX, dstY};
const float *src_matrix = NULL;
const float *mask_matrix = NULL;
if (comp->src->has_transform)
src_matrix = comp->src->transform;
if (comp->mask && comp->mask->has_transform)
mask_matrix = comp->mask->transform;
renderer_texture(ctx, pos, width, height,
src_matrix, mask_matrix);
}
}
XA_EXPORT void
xa_composite_done(struct xa_context *ctx)
{
renderer_draw_flush(ctx);
ctx->pipe->flush(ctx->pipe, &ctx->last_fence);
ctx->comp = NULL;
ctx->has_solid_color = FALSE;
xa_ctx_sampler_views_destroy(ctx);
}
static const struct xa_composite_allocation a = {
.xa_composite_size = sizeof(struct xa_composite),
.xa_picture_size = sizeof(struct xa_picture),
.xa_source_pict_size = sizeof(union xa_source_pict),
};
XA_EXPORT const struct xa_composite_allocation *
xa_composite_allocation(void)
{
return &a;
}