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/*
* Copyright (c) 2012-2013 Etnaviv Project
*
* 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
* 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.
*/
/* Blending CSOs */
#include "etna_blend.h"
#include "etna_internal.h"
#include "etna_pipe.h"
#include "etna_translate.h"
#include "pipe/p_defines.h"
#include "pipe/p_state.h"
#include "util/u_memory.h"
#include <etnaviv/common.xml.h>
#include <etnaviv/state.xml.h>
#include <etnaviv/state_3d.xml.h>
static void *etna_pipe_create_blend_state(struct pipe_context *pipe,
const struct pipe_blend_state *bs)
{
//struct etna_pipe_context *priv = etna_pipe_context(pipe);
struct compiled_blend_state *cs = CALLOC_STRUCT(compiled_blend_state);
const struct pipe_rt_blend_state *rt0 = &bs->rt[0];
/* Enable blending if
* - blend enabled in blend state
* - NOT source factor is ONE and destination factor ZERO for both rgb and
* alpha (which would mean that blending is effectively disabled)
*/
bool enable = rt0->blend_enable &&
!(rt0->rgb_src_factor == PIPE_BLENDFACTOR_ONE && rt0->rgb_dst_factor == PIPE_BLENDFACTOR_ZERO &&
rt0->alpha_src_factor == PIPE_BLENDFACTOR_ONE && rt0->alpha_dst_factor == PIPE_BLENDFACTOR_ZERO);
/* Enable separate alpha if
* - Blending enabled (see above)
* - NOT source factor is equal to destination factor for both rgb abd
* alpha (which would effectively that mean alpha is not separate)
*/
bool separate_alpha = enable && !(rt0->rgb_src_factor == rt0->alpha_src_factor &&
rt0->rgb_dst_factor == rt0->alpha_dst_factor);
/* If the complete render target is written, set full_overwrite:
* - The color mask is 1111
* - No blending is used
*/
bool full_overwrite = (rt0->colormask == 15) && !enable;
if(enable)
{
cs->PE_ALPHA_CONFIG =
VIVS_PE_ALPHA_CONFIG_BLEND_ENABLE_COLOR |
(separate_alpha ? VIVS_PE_ALPHA_CONFIG_BLEND_SEPARATE_ALPHA : 0) |
VIVS_PE_ALPHA_CONFIG_SRC_FUNC_COLOR(translate_blend_factor(rt0->rgb_src_factor)) |
VIVS_PE_ALPHA_CONFIG_SRC_FUNC_ALPHA(translate_blend_factor(rt0->alpha_src_factor)) |
VIVS_PE_ALPHA_CONFIG_DST_FUNC_COLOR(translate_blend_factor(rt0->rgb_dst_factor)) |
VIVS_PE_ALPHA_CONFIG_DST_FUNC_ALPHA(translate_blend_factor(rt0->alpha_dst_factor)) |
VIVS_PE_ALPHA_CONFIG_EQ_COLOR(translate_blend(rt0->rgb_func)) |
VIVS_PE_ALPHA_CONFIG_EQ_ALPHA(translate_blend(rt0->alpha_func));
} else {
cs->PE_ALPHA_CONFIG = 0;
}
cs->PE_COLOR_FORMAT =
VIVS_PE_COLOR_FORMAT_COMPONENTS(rt0->colormask) |
(full_overwrite ? VIVS_PE_COLOR_FORMAT_OVERWRITE : 0);
cs->PE_LOGIC_OP =
VIVS_PE_LOGIC_OP_OP(bs->logicop_enable ? bs->logicop_func : LOGIC_OP_COPY) /* 1-to-1 mapping */ |
0x000E4000 /* ??? */;
/* independent_blend_enable not needed: only one rt supported */
/* XXX alpha_to_coverage / alpha_to_one? */
/* Set dither registers based on dither status. These registers set the dither pattern,
* for now, set the same values as the blob.
*/
if(bs->dither)
{
cs->PE_DITHER[0] = 0x6e4ca280;
cs->PE_DITHER[1] = 0x5d7f91b3;
} else {
cs->PE_DITHER[0] = 0xffffffff;
cs->PE_DITHER[1] = 0xffffffff;
}
return cs;
}
static void etna_pipe_bind_blend_state(struct pipe_context *pipe, void *bs)
{
struct etna_pipe_context *priv = etna_pipe_context(pipe);
priv->dirty_bits |= ETNA_STATE_BLEND;
priv->blend_p = bs;
if(bs)
priv->blend = *(struct compiled_blend_state*)bs;
}
static void etna_pipe_delete_blend_state(struct pipe_context *pipe, void *bs)
{
//struct etna_pipe_context *priv = etna_pipe_context(pipe);
FREE(bs);
}
void etna_pipe_blend_init(struct pipe_context *pc)
{
pc->create_blend_state = etna_pipe_create_blend_state;
pc->bind_blend_state = etna_pipe_bind_blend_state;
pc->delete_blend_state = etna_pipe_delete_blend_state;
}
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