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/**********************************************************
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* Copyright 2009-2011 VMware, Inc. All rights reserved.
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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*********************************************************
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* Zack Rusin <zackr-at-vmware-dot-com>
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* Thomas Hellstrom <thellstrom-at-vmware-dot-com>
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#include "xa_composite.h"
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#include "xa_context.h"
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#include "cso_cache/cso_context.h"
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#include "util/u_sampler.h"
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#include "util/u_inlines.h"
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/*XXX also in Xrender.h but the including it here breaks compilition */
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#define XFixedToDouble(f) (((double) (f)) / 65536.)
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struct xa_composite_blend {
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unsigned alpha_dst : 4;
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unsigned alpha_src : 4;
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unsigned rgb_src : 8; /**< PIPE_BLENDFACTOR_x */
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unsigned rgb_dst : 8; /**< PIPE_BLENDFACTOR_x */
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#define XA_BLEND_OP_OVER 3
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static const struct xa_composite_blend xa_blends[] = {
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0, 0, PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ZERO},
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0, 0, PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_ZERO},
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0, 0, PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ONE},
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0, 1, PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_INV_SRC_ALPHA},
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1, 0, PIPE_BLENDFACTOR_INV_DST_ALPHA, PIPE_BLENDFACTOR_ONE},
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1, 0, PIPE_BLENDFACTOR_DST_ALPHA, PIPE_BLENDFACTOR_ZERO},
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0, 1, PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_SRC_ALPHA},
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1, 0, PIPE_BLENDFACTOR_INV_DST_ALPHA, PIPE_BLENDFACTOR_ZERO},
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0, 1, PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_INV_SRC_ALPHA},
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1, 1, PIPE_BLENDFACTOR_DST_ALPHA, PIPE_BLENDFACTOR_INV_SRC_ALPHA},
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1, 1, PIPE_BLENDFACTOR_INV_DST_ALPHA, PIPE_BLENDFACTOR_SRC_ALPHA},
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1, 1, PIPE_BLENDFACTOR_INV_DST_ALPHA, PIPE_BLENDFACTOR_INV_SRC_ALPHA},
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0, 0, PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_ONE},
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* The alpha value stored in a luminance texture is read by the
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xa_convert_blend_for_luminance(unsigned factor)
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case PIPE_BLENDFACTOR_DST_ALPHA:
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return PIPE_BLENDFACTOR_DST_COLOR;
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case PIPE_BLENDFACTOR_INV_DST_ALPHA:
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return PIPE_BLENDFACTOR_INV_DST_COLOR;
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blend_for_op(struct xa_composite_blend *blend,
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enum xa_composite_op op,
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struct xa_picture *src_pic,
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struct xa_picture *mask_pic,
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struct xa_picture *dst_pic)
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const int num_blends =
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sizeof(xa_blends)/sizeof(struct xa_composite_blend);
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boolean supported = FALSE;
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* Temporarily disable component alpha since it appears buggy.
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if (mask_pic && mask_pic->component_alpha)
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* our default in case something goes wrong
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*blend = xa_blends[XA_BLEND_OP_OVER];
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for (i = 0; i < num_blends; ++i) {
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if (xa_blends[i].op == op) {
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*blend = xa_blends[i];
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if (dst_pic->srf->tex->format == PIPE_FORMAT_L8_UNORM) {
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blend->rgb_src = xa_convert_blend_for_luminance(blend->rgb_src);
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blend->rgb_dst = xa_convert_blend_for_luminance(blend->rgb_dst);
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* If there's no dst alpha channel, adjust the blend op so that we'll treat
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if (xa_format_a(dst_pic->pict_format) == 0 && blend->alpha_dst) {
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if (blend->rgb_src == PIPE_BLENDFACTOR_DST_ALPHA)
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blend->rgb_src = PIPE_BLENDFACTOR_ONE;
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else if (blend->rgb_src == PIPE_BLENDFACTOR_INV_DST_ALPHA)
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blend->rgb_src = PIPE_BLENDFACTOR_ZERO;
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* If the source alpha is being used, then we should only be in a case where
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* the source blend factor is 0, and the source blend value is the mask
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* channels multiplied by the source picture's alpha.
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if (mask_pic && mask_pic->component_alpha &&
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xa_format_rgb(mask_pic->pict_format) &&
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if (blend->rgb_dst == PIPE_BLENDFACTOR_SRC_ALPHA) {
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blend->rgb_dst = PIPE_BLENDFACTOR_SRC_COLOR;
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} else if (blend->rgb_dst == PIPE_BLENDFACTOR_INV_SRC_ALPHA) {
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blend->rgb_dst = PIPE_BLENDFACTOR_INV_SRC_COLOR;
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xa_repeat_to_gallium(int mode)
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case xa_wrap_clamp_to_border:
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return PIPE_TEX_WRAP_CLAMP_TO_BORDER;
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return PIPE_TEX_WRAP_REPEAT;
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case xa_wrap_mirror_repeat:
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return PIPE_TEX_WRAP_MIRROR_REPEAT;
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case xa_wrap_clamp_to_edge:
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return PIPE_TEX_WRAP_CLAMP_TO_EDGE;
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return PIPE_TEX_WRAP_REPEAT;
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static INLINE boolean
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xa_filter_to_gallium(int xrender_filter, int *out_filter)
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switch (xrender_filter) {
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case xa_filter_nearest:
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*out_filter = PIPE_TEX_FILTER_NEAREST;
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case xa_filter_linear:
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*out_filter = PIPE_TEX_FILTER_LINEAR;
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*out_filter = PIPE_TEX_FILTER_NEAREST;
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xa_is_filter_accelerated(struct xa_picture *pic)
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if (pic && !xa_filter_to_gallium(pic->filter, &filter))
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xa_composite_check_accelerated(const struct xa_composite *comp)
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struct xa_composite_blend blend;
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struct xa_picture *src_pic = comp->src;
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if (!xa_is_filter_accelerated(src_pic) ||
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!xa_is_filter_accelerated(comp->mask)) {
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return -XA_ERR_INVAL;
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if (src_pic->src_pict) {
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if (src_pic->src_pict->type != xa_src_pict_solid_fill)
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return -XA_ERR_INVAL;
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* Currently we don't support solid fill with a mask.
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* We can easily do that, but that would require shader,
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* sampler view setup and vertex setup modification.
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return -XA_ERR_INVAL;
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if (blend_for_op(&blend, comp->op, comp->src, comp->mask, comp->dst)) {
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struct xa_picture *mask = comp->mask;
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if (mask && mask->component_alpha &&
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xa_format_rgb(mask->pict_format)) {
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if (blend.alpha_src && blend.rgb_src != PIPE_BLENDFACTOR_ZERO) {
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return -XA_ERR_INVAL;
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return -XA_ERR_INVAL;
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bind_composite_blend_state(struct xa_context *ctx,
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const struct xa_composite *comp)
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struct xa_composite_blend blend_opt;
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struct pipe_blend_state blend;
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if (!blend_for_op(&blend_opt, comp->op, comp->src, comp->mask, comp->dst))
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return -XA_ERR_INVAL;
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memset(&blend, 0, sizeof(struct pipe_blend_state));
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blend.rt[0].blend_enable = 1;
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blend.rt[0].colormask = PIPE_MASK_RGBA;
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blend.rt[0].rgb_src_factor = blend_opt.rgb_src;
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blend.rt[0].alpha_src_factor = blend_opt.rgb_src;
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blend.rt[0].rgb_dst_factor = blend_opt.rgb_dst;
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blend.rt[0].alpha_dst_factor = blend_opt.rgb_dst;
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cso_set_blend(ctx->cso, &blend);
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picture_format_fixups(struct xa_picture *src_pic,
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boolean set_alpha = FALSE;
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boolean swizzle = FALSE;
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struct xa_surface *src = src_pic->srf;
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enum xa_formats src_hw_format, src_pic_format;
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enum xa_surface_type src_hw_type, src_pic_type;
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src_hw_format = xa_surface_format(src);
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src_pic_format = src_pic->pict_format;
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set_alpha = (xa_format_type_is_color(src_pic_format) &&
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xa_format_a(src_pic_format) == 0);
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ret |= mask ? FS_MASK_SET_ALPHA : FS_SRC_SET_ALPHA;
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if (src_hw_format == src_pic_format) {
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if (src->tex->format == PIPE_FORMAT_L8_UNORM)
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return ((mask) ? FS_MASK_LUMINANCE : FS_SRC_LUMINANCE);
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src_hw_type = xa_format_type(src_hw_format);
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src_pic_type = xa_format_type(src_pic_format);
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swizzle = ((src_hw_type == xa_type_argb &&
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src_pic_type == xa_type_abgr) ||
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((src_hw_type == xa_type_abgr &&
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src_pic_type == xa_type_argb)));
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if (!swizzle && (src_hw_type != src_pic_type))
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ret |= mask ? FS_MASK_SWIZZLE_RGB : FS_SRC_SWIZZLE_RGB;
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bind_shaders(struct xa_context *ctx, const struct xa_composite *comp)
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unsigned vs_traits = 0, fs_traits = 0;
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struct xa_shader shader;
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struct xa_picture *src_pic = comp->src;
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struct xa_picture *mask_pic = comp->mask;
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ctx->has_solid_color = FALSE;
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if (src_pic->wrap == xa_wrap_clamp_to_border && src_pic->has_transform)
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fs_traits |= FS_SRC_REPEAT_NONE;
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if (src_pic->src_pict) {
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if (src_pic->src_pict->type == xa_src_pict_solid_fill) {
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fs_traits |= FS_SOLID_FILL | FS_FILL;
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vs_traits |= VS_SOLID_FILL;
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xa_pixel_to_float4(src_pic->src_pict->solid_fill.color,
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ctx->has_solid_color = TRUE;
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fs_traits |= FS_COMPOSITE;
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vs_traits |= VS_COMPOSITE;
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fs_traits |= picture_format_fixups(src_pic, 0);
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vs_traits |= VS_MASK;
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fs_traits |= FS_MASK;
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if (mask_pic->wrap == xa_wrap_clamp_to_border &&
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mask_pic->has_transform)
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fs_traits |= FS_MASK_REPEAT_NONE;
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if (mask_pic->component_alpha) {
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struct xa_composite_blend blend;
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if (!blend_for_op(&blend, comp->op, src_pic, mask_pic, NULL))
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return -XA_ERR_INVAL;
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if (blend.alpha_src) {
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fs_traits |= FS_CA_SRCALPHA;
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fs_traits |= FS_CA_FULL;
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fs_traits |= picture_format_fixups(mask_pic, 1);
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if (ctx->srf->format == PIPE_FORMAT_L8_UNORM)
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fs_traits |= FS_DST_LUMINANCE;
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shader = xa_shaders_get(ctx->shaders, vs_traits, fs_traits);
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cso_set_vertex_shader_handle(ctx->cso, shader.vs);
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cso_set_fragment_shader_handle(ctx->cso, shader.fs);
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bind_samplers(struct xa_context *ctx,
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const struct xa_composite *comp)
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struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
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struct pipe_sampler_state src_sampler, mask_sampler;
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struct pipe_sampler_view view_templ;
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struct pipe_sampler_view *src_view;
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struct pipe_context *pipe = ctx->pipe;
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struct xa_picture *src_pic = comp->src;
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struct xa_picture *mask_pic = comp->mask;
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ctx->num_bound_samplers = 0;
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memset(&src_sampler, 0, sizeof(struct pipe_sampler_state));
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memset(&mask_sampler, 0, sizeof(struct pipe_sampler_state));
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if (ctx->has_solid_color) {
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pipe_sampler_view_reference(&ctx->bound_sampler_views[0], NULL);
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unsigned src_wrap = xa_repeat_to_gallium(src_pic->wrap);
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(void) xa_filter_to_gallium(src_pic->filter, &filter);
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src_sampler.wrap_s = src_wrap;
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src_sampler.wrap_t = src_wrap;
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src_sampler.min_img_filter = filter;
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src_sampler.mag_img_filter = filter;
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src_sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
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src_sampler.normalized_coords = 1;
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samplers[0] = &src_sampler;
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ctx->num_bound_samplers = 1;
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u_sampler_view_default_template(&view_templ,
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src_pic->srf->tex->format);
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src_view = pipe->create_sampler_view(pipe, src_pic->srf->tex,
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pipe_sampler_view_reference(&ctx->bound_sampler_views[0], NULL);
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ctx->bound_sampler_views[0] = src_view;
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unsigned mask_wrap = xa_repeat_to_gallium(mask_pic->wrap);
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(void) xa_filter_to_gallium(mask_pic->filter, &filter);
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mask_sampler.wrap_s = mask_wrap;
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mask_sampler.wrap_t = mask_wrap;
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mask_sampler.min_img_filter = filter;
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mask_sampler.mag_img_filter = filter;
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src_sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
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mask_sampler.normalized_coords = 1;
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samplers[1] = &mask_sampler;
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ctx->num_bound_samplers = 2;
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u_sampler_view_default_template(&view_templ,
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mask_pic->srf->tex->format);
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src_view = pipe->create_sampler_view(pipe, mask_pic->srf->tex,
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pipe_sampler_view_reference(&ctx->bound_sampler_views[1], NULL);
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ctx->bound_sampler_views[1] = src_view;
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* If src is a solid color, we have no src view, so set up a
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* dummy one that will not be used anyway.
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if (ctx->bound_sampler_views[0] == NULL)
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pipe_sampler_view_reference(&ctx->bound_sampler_views[0],
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cso_set_samplers(ctx->cso, PIPE_SHADER_FRAGMENT, ctx->num_bound_samplers,
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(const struct pipe_sampler_state **)samplers);
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cso_set_sampler_views(ctx->cso, PIPE_SHADER_FRAGMENT, ctx->num_bound_samplers,
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ctx->bound_sampler_views);
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xa_composite_prepare(struct xa_context *ctx,
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const struct xa_composite *comp)
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struct xa_surface *dst_srf = comp->dst->srf;
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ret = xa_ctx_srf_create(ctx, dst_srf);
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if (ret != XA_ERR_NONE)
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renderer_bind_destination(ctx, ctx->srf, ctx->srf->width,
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ret = bind_composite_blend_state(ctx, comp);
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if (ret != XA_ERR_NONE)
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ret = bind_shaders(ctx, comp);
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if (ret != XA_ERR_NONE)
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bind_samplers(ctx, comp);
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if (ctx->num_bound_samplers == 0 ) { /* solid fill */
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renderer_begin_solid(ctx);
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renderer_begin_textures(ctx);
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xa_ctx_srf_destroy(ctx);
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xa_composite_rect(struct xa_context *ctx,
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int srcX, int srcY, int maskX, int maskY,
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int dstX, int dstY, int width, int height)
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if (ctx->num_bound_samplers == 0 ) { /* solid fill */
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renderer_solid(ctx, dstX, dstY, dstX + width, dstY + height,
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const struct xa_composite *comp = ctx->comp;
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int pos[6] = {srcX, srcY, maskX, maskY, dstX, dstY};
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const float *src_matrix = NULL;
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const float *mask_matrix = NULL;
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if (comp->src->has_transform)
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src_matrix = comp->src->transform;
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if (comp->mask && comp->mask->has_transform)
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mask_matrix = comp->mask->transform;
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renderer_texture(ctx, pos, width, height,
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src_matrix, mask_matrix);
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xa_composite_done(struct xa_context *ctx)
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renderer_draw_flush(ctx);
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ctx->pipe->flush(ctx->pipe, &ctx->last_fence);
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ctx->has_solid_color = FALSE;
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xa_ctx_sampler_views_destroy(ctx);
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static const struct xa_composite_allocation a = {
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.xa_composite_size = sizeof(struct xa_composite),
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.xa_picture_size = sizeof(struct xa_picture),
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.xa_source_pict_size = sizeof(union xa_source_pict),
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XA_EXPORT const struct xa_composite_allocation *
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xa_composite_allocation(void)