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/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
/*
* Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
*
* 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 (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 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:
* Rob Clark <robclark@freedesktop.org>
*/
#include "pipe/p_state.h"
#include "util/u_string.h"
#include "util/u_memory.h"
#include "freedreno_blend.h"
#include "freedreno_context.h"
#include "freedreno_util.h"
static enum rb_blend_op
blend_factor(unsigned factor)
{
switch (factor) {
case PIPE_BLENDFACTOR_ONE:
return RB_BLEND_ONE;
case PIPE_BLENDFACTOR_SRC_COLOR:
return RB_BLEND_SRC_COLOR;
case PIPE_BLENDFACTOR_SRC_ALPHA:
return RB_BLEND_SRC_ALPHA;
case PIPE_BLENDFACTOR_DST_ALPHA:
return RB_BLEND_DST_ALPHA;
case PIPE_BLENDFACTOR_DST_COLOR:
return RB_BLEND_DST_COLOR;
case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
return RB_BLEND_SRC_ALPHA_SATURATE;
case PIPE_BLENDFACTOR_CONST_COLOR:
return RB_BLEND_CONSTANT_COLOR;
case PIPE_BLENDFACTOR_CONST_ALPHA:
return RB_BLEND_CONSTANT_ALPHA;
case PIPE_BLENDFACTOR_ZERO:
case 0:
return RB_BLEND_ZERO;
case PIPE_BLENDFACTOR_INV_SRC_COLOR:
return RB_BLEND_ONE_MINUS_SRC_COLOR;
case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
return RB_BLEND_ONE_MINUS_SRC_ALPHA;
case PIPE_BLENDFACTOR_INV_DST_ALPHA:
return RB_BLEND_ONE_MINUS_DST_ALPHA;
case PIPE_BLENDFACTOR_INV_DST_COLOR:
return RB_BLEND_ONE_MINUS_DST_COLOR;
case PIPE_BLENDFACTOR_INV_CONST_COLOR:
return RB_BLEND_ONE_MINUS_CONSTANT_COLOR;
case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
return RB_BLEND_ONE_MINUS_CONSTANT_ALPHA;
case PIPE_BLENDFACTOR_INV_SRC1_COLOR:
case PIPE_BLENDFACTOR_INV_SRC1_ALPHA:
case PIPE_BLENDFACTOR_SRC1_COLOR:
case PIPE_BLENDFACTOR_SRC1_ALPHA:
/* I don't think these are supported */
default:
DBG("invalid blend factor: %x", factor);
return 0;
}
}
static enum rb_comb_func
blend_func(unsigned func)
{
switch (func) {
case PIPE_BLEND_ADD:
return COMB_DST_PLUS_SRC;
case PIPE_BLEND_MIN:
return COMB_MIN_DST_SRC;
case PIPE_BLEND_MAX:
return COMB_MAX_DST_SRC;
case PIPE_BLEND_SUBTRACT:
return COMB_SRC_MINUS_DST;
case PIPE_BLEND_REVERSE_SUBTRACT:
return COMB_DST_MINUS_SRC;
default:
DBG("invalid blend func: %x", func);
return 0;
}
}
static void *
fd_blend_state_create(struct pipe_context *pctx,
const struct pipe_blend_state *cso)
{
const struct pipe_rt_blend_state *rt = &cso->rt[0];
struct fd_blend_stateobj *so;
if (cso->logicop_enable) {
DBG("Unsupported! logicop");
return NULL;
}
if (cso->independent_blend_enable) {
DBG("Unsupported! independent blend state");
return NULL;
}
so = CALLOC_STRUCT(fd_blend_stateobj);
if (!so)
return NULL;
so->base = *cso;
so->rb_colorcontrol = RB_COLORCONTROL_ROP_CODE(12);
so->rb_blendcontrol =
RB_BLENDCONTROL_COLOR_SRCBLEND(blend_factor(rt->rgb_src_factor)) |
RB_BLENDCONTROL_COLOR_COMB_FCN(blend_func(rt->rgb_func)) |
RB_BLENDCONTROL_COLOR_DESTBLEND(blend_factor(rt->rgb_dst_factor)) |
RB_BLENDCONTROL_ALPHA_SRCBLEND(blend_factor(rt->alpha_src_factor)) |
RB_BLENDCONTROL_ALPHA_COMB_FCN(blend_func(rt->alpha_func)) |
RB_BLENDCONTROL_ALPHA_DESTBLEND(blend_factor(rt->alpha_dst_factor));
if (rt->colormask & PIPE_MASK_R)
so->rb_colormask |= RB_COLOR_MASK_WRITE_RED;
if (rt->colormask & PIPE_MASK_G)
so->rb_colormask |= RB_COLOR_MASK_WRITE_GREEN;
if (rt->colormask & PIPE_MASK_B)
so->rb_colormask |= RB_COLOR_MASK_WRITE_BLUE;
if (rt->colormask & PIPE_MASK_A)
so->rb_colormask |= RB_COLOR_MASK_WRITE_ALPHA;
if (!rt->blend_enable)
so->rb_colorcontrol |= RB_COLORCONTROL_BLEND_DISABLE;
if (cso->dither)
so->rb_colorcontrol |= RB_COLORCONTROL_DITHER_MODE(DITHER_ALWAYS);
return so;
}
static void
fd_blend_state_bind(struct pipe_context *pctx, void *hwcso)
{
struct fd_context *ctx = fd_context(pctx);
ctx->blend = hwcso;
ctx->dirty |= FD_DIRTY_BLEND;
}
static void
fd_blend_state_delete(struct pipe_context *pctx, void *hwcso)
{
FREE(hwcso);
}
void
fd_blend_init(struct pipe_context *pctx)
{
pctx->create_blend_state = fd_blend_state_create;
pctx->bind_blend_state = fd_blend_state_bind;
pctx->delete_blend_state = fd_blend_state_delete;
}
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