/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 TUNGSTEN GRAPHICS 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.
*
**************************************************************************/
/**
* quad blending
* \author Brian Paul
*/
#include "pipe/p_defines.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "sp_context.h"
#include "sp_quad.h"
#include "sp_tile_cache.h"
#include "sp_quad_pipe.h"
#define VEC4_COPY(DST, SRC) \
do { \
DST[0] = SRC[0]; \
DST[1] = SRC[1]; \
DST[2] = SRC[2]; \
DST[3] = SRC[3]; \
} while(0)
#define VEC4_SCALAR(DST, SRC) \
do { \
DST[0] = SRC; \
DST[1] = SRC; \
DST[2] = SRC; \
DST[3] = SRC; \
} while(0)
#define VEC4_ADD(R, A, B) \
do { \
R[0] = A[0] + B[0]; \
R[1] = A[1] + B[1]; \
R[2] = A[2] + B[2]; \
R[3] = A[3] + B[3]; \
} while (0)
#define VEC4_SUB(R, A, B) \
do { \
R[0] = A[0] - B[0]; \
R[1] = A[1] - B[1]; \
R[2] = A[2] - B[2]; \
R[3] = A[3] - B[3]; \
} while (0)
/** Add and limit result to ceiling of 1.0 */
#define VEC4_ADD_SAT(R, A, B) \
do { \
R[0] = A[0] + B[0]; if (R[0] > 1.0f) R[0] = 1.0f; \
R[1] = A[1] + B[1]; if (R[1] > 1.0f) R[1] = 1.0f; \
R[2] = A[2] + B[2]; if (R[2] > 1.0f) R[2] = 1.0f; \
R[3] = A[3] + B[3]; if (R[3] > 1.0f) R[3] = 1.0f; \
} while (0)
/** Subtract and limit result to floor of 0.0 */
#define VEC4_SUB_SAT(R, A, B) \
do { \
R[0] = A[0] - B[0]; if (R[0] < 0.0f) R[0] = 0.0f; \
R[1] = A[1] - B[1]; if (R[1] < 0.0f) R[1] = 0.0f; \
R[2] = A[2] - B[2]; if (R[2] < 0.0f) R[2] = 0.0f; \
R[3] = A[3] - B[3]; if (R[3] < 0.0f) R[3] = 0.0f; \
} while (0)
#define VEC4_MUL(R, A, B) \
do { \
R[0] = A[0] * B[0]; \
R[1] = A[1] * B[1]; \
R[2] = A[2] * B[2]; \
R[3] = A[3] * B[3]; \
} while (0)
#define VEC4_MIN(R, A, B) \
do { \
R[0] = (A[0] < B[0]) ? A[0] : B[0]; \
R[1] = (A[1] < B[1]) ? A[1] : B[1]; \
R[2] = (A[2] < B[2]) ? A[2] : B[2]; \
R[3] = (A[3] < B[3]) ? A[3] : B[3]; \
} while (0)
#define VEC4_MAX(R, A, B) \
do { \
R[0] = (A[0] > B[0]) ? A[0] : B[0]; \
R[1] = (A[1] > B[1]) ? A[1] : B[1]; \
R[2] = (A[2] > B[2]) ? A[2] : B[2]; \
R[3] = (A[3] > B[3]) ? A[3] : B[3]; \
} while (0)
static void
logicop_quad(struct quad_stage *qs,
float (*quadColor)[4],
float (*dest)[4])
{
struct softpipe_context *softpipe = qs->softpipe;
ubyte src[4][4], dst[4][4], res[4][4];
uint *src4 = (uint *) src;
uint *dst4 = (uint *) dst;
uint *res4 = (uint *) res;
uint j;
/* convert to ubyte */
for (j = 0; j < 4; j++) { /* loop over R,G,B,A channels */
dst[j][0] = float_to_ubyte(dest[j][0]); /* P0 */
dst[j][1] = float_to_ubyte(dest[j][1]); /* P1 */
dst[j][2] = float_to_ubyte(dest[j][2]); /* P2 */
dst[j][3] = float_to_ubyte(dest[j][3]); /* P3 */
src[j][0] = float_to_ubyte(quadColor[j][0]); /* P0 */
src[j][1] = float_to_ubyte(quadColor[j][1]); /* P1 */
src[j][2] = float_to_ubyte(quadColor[j][2]); /* P2 */
src[j][3] = float_to_ubyte(quadColor[j][3]); /* P3 */
}
switch (softpipe->blend->logicop_func) {
case PIPE_LOGICOP_CLEAR:
for (j = 0; j < 4; j++)
res4[j] = 0;
break;
case PIPE_LOGICOP_NOR:
for (j = 0; j < 4; j++)
res4[j] = ~(src4[j] | dst4[j]);
break;
case PIPE_LOGICOP_AND_INVERTED:
for (j = 0; j < 4; j++)
res4[j] = ~src4[j] & dst4[j];
break;
case PIPE_LOGICOP_COPY_INVERTED:
for (j = 0; j < 4; j++)
res4[j] = ~src4[j];
break;
case PIPE_LOGICOP_AND_REVERSE:
for (j = 0; j < 4; j++)
res4[j] = src4[j] & ~dst4[j];
break;
case PIPE_LOGICOP_INVERT:
for (j = 0; j < 4; j++)
res4[j] = ~dst4[j];
break;
case PIPE_LOGICOP_XOR:
for (j = 0; j < 4; j++)
res4[j] = dst4[j] ^ src4[j];
break;
case PIPE_LOGICOP_NAND:
for (j = 0; j < 4; j++)
res4[j] = ~(src4[j] & dst4[j]);
break;
case PIPE_LOGICOP_AND:
for (j = 0; j < 4; j++)
res4[j] = src4[j] & dst4[j];
break;
case PIPE_LOGICOP_EQUIV:
for (j = 0; j < 4; j++)
res4[j] = ~(src4[j] ^ dst4[j]);
break;
case PIPE_LOGICOP_NOOP:
for (j = 0; j < 4; j++)
res4[j] = dst4[j];
break;
case PIPE_LOGICOP_OR_INVERTED:
for (j = 0; j < 4; j++)
res4[j] = ~src4[j] | dst4[j];
break;
case PIPE_LOGICOP_COPY:
for (j = 0; j < 4; j++)
res4[j] = src4[j];
break;
case PIPE_LOGICOP_OR_REVERSE:
for (j = 0; j < 4; j++)
res4[j] = src4[j] | ~dst4[j];
break;
case PIPE_LOGICOP_OR:
for (j = 0; j < 4; j++)
res4[j] = src4[j] | dst4[j];
break;
case PIPE_LOGICOP_SET:
for (j = 0; j < 4; j++)
res4[j] = ~0;
break;
default:
assert(0);
}
for (j = 0; j < 4; j++) {
quadColor[j][0] = ubyte_to_float(res[j][0]);
quadColor[j][1] = ubyte_to_float(res[j][1]);
quadColor[j][2] = ubyte_to_float(res[j][2]);
quadColor[j][3] = ubyte_to_float(res[j][3]);
}
}
static void
blend_quad(struct quad_stage *qs,
float (*quadColor)[4],
float (*dest)[4],
unsigned cbuf)
{
static const float zero[4] = { 0, 0, 0, 0 };
static const float one[4] = { 1, 1, 1, 1 };
struct softpipe_context *softpipe = qs->softpipe;
float source[4][QUAD_SIZE] = { { 0 } };
/*
* Compute src/first term RGB
*/
switch (softpipe->blend->rt[cbuf].rgb_src_factor) {
case PIPE_BLENDFACTOR_ONE:
VEC4_COPY(source[0], quadColor[0]); /* R */
VEC4_COPY(source[1], quadColor[1]); /* G */
VEC4_COPY(source[2], quadColor[2]); /* B */
break;
case PIPE_BLENDFACTOR_SRC_COLOR:
VEC4_MUL(source[0], quadColor[0], quadColor[0]); /* R */
VEC4_MUL(source[1], quadColor[1], quadColor[1]); /* G */
VEC4_MUL(source[2], quadColor[2], quadColor[2]); /* B */
break;
case PIPE_BLENDFACTOR_SRC_ALPHA:
{
const float *alpha = quadColor[3];
VEC4_MUL(source[0], quadColor[0], alpha); /* R */
VEC4_MUL(source[1], quadColor[1], alpha); /* G */
VEC4_MUL(source[2], quadColor[2], alpha); /* B */
}
break;
case PIPE_BLENDFACTOR_DST_COLOR:
VEC4_MUL(source[0], quadColor[0], dest[0]); /* R */
VEC4_MUL(source[1], quadColor[1], dest[1]); /* G */
VEC4_MUL(source[2], quadColor[2], dest[2]); /* B */
break;
case PIPE_BLENDFACTOR_DST_ALPHA:
{
const float *alpha = dest[3];
VEC4_MUL(source[0], quadColor[0], alpha); /* R */
VEC4_MUL(source[1], quadColor[1], alpha); /* G */
VEC4_MUL(source[2], quadColor[2], alpha); /* B */
}
break;
case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
{
const float *alpha = quadColor[3];
float diff[4], temp[4];
VEC4_SUB(diff, one, dest[3]);
VEC4_MIN(temp, alpha, diff);
VEC4_MUL(source[0], quadColor[0], temp); /* R */
VEC4_MUL(source[1], quadColor[1], temp); /* G */
VEC4_MUL(source[2], quadColor[2], temp); /* B */
}
break;
case PIPE_BLENDFACTOR_CONST_COLOR:
{
float comp[4];
VEC4_SCALAR(comp, softpipe->blend_color.color[0]); /* R */
VEC4_MUL(source[0], quadColor[0], comp); /* R */
VEC4_SCALAR(comp, softpipe->blend_color.color[1]); /* G */
VEC4_MUL(source[1], quadColor[1], comp); /* G */
VEC4_SCALAR(comp, softpipe->blend_color.color[2]); /* B */
VEC4_MUL(source[2], quadColor[2], comp); /* B */
}
break;
case PIPE_BLENDFACTOR_CONST_ALPHA:
{
float alpha[4];
VEC4_SCALAR(alpha, softpipe->blend_color.color[3]);
VEC4_MUL(source[0], quadColor[0], alpha); /* R */
VEC4_MUL(source[1], quadColor[1], alpha); /* G */
VEC4_MUL(source[2], quadColor[2], alpha); /* B */
}
break;
case PIPE_BLENDFACTOR_SRC1_COLOR:
assert(0); /* to do */
break;
case PIPE_BLENDFACTOR_SRC1_ALPHA:
assert(0); /* to do */
break;
case PIPE_BLENDFACTOR_ZERO:
VEC4_COPY(source[0], zero); /* R */
VEC4_COPY(source[1], zero); /* G */
VEC4_COPY(source[2], zero); /* B */
break;
case PIPE_BLENDFACTOR_INV_SRC_COLOR:
{
float inv_comp[4];
VEC4_SUB(inv_comp, one, quadColor[0]); /* R */
VEC4_MUL(source[0], quadColor[0], inv_comp); /* R */
VEC4_SUB(inv_comp, one, quadColor[1]); /* G */
VEC4_MUL(source[1], quadColor[1], inv_comp); /* G */
VEC4_SUB(inv_comp, one, quadColor[2]); /* B */
VEC4_MUL(source[2], quadColor[2], inv_comp); /* B */
}
break;
case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
{
float inv_alpha[4];
VEC4_SUB(inv_alpha, one, quadColor[3]);
VEC4_MUL(source[0], quadColor[0], inv_alpha); /* R */
VEC4_MUL(source[1], quadColor[1], inv_alpha); /* G */
VEC4_MUL(source[2], quadColor[2], inv_alpha); /* B */
}
break;
case PIPE_BLENDFACTOR_INV_DST_ALPHA:
{
float inv_alpha[4];
VEC4_SUB(inv_alpha, one, dest[3]);
VEC4_MUL(source[0], quadColor[0], inv_alpha); /* R */
VEC4_MUL(source[1], quadColor[1], inv_alpha); /* G */
VEC4_MUL(source[2], quadColor[2], inv_alpha); /* B */
}
break;
case PIPE_BLENDFACTOR_INV_DST_COLOR:
{
float inv_comp[4];
VEC4_SUB(inv_comp, one, dest[0]); /* R */
VEC4_MUL(source[0], quadColor[0], inv_comp); /* R */
VEC4_SUB(inv_comp, one, dest[1]); /* G */
VEC4_MUL(source[1], quadColor[1], inv_comp); /* G */
VEC4_SUB(inv_comp, one, dest[2]); /* B */
VEC4_MUL(source[2], quadColor[2], inv_comp); /* B */
}
break;
case PIPE_BLENDFACTOR_INV_CONST_COLOR:
{
float inv_comp[4];
/* R */
VEC4_SCALAR(inv_comp, 1.0f - softpipe->blend_color.color[0]);
VEC4_MUL(source[0], quadColor[0], inv_comp);
/* G */
VEC4_SCALAR(inv_comp, 1.0f - softpipe->blend_color.color[1]);
VEC4_MUL(source[1], quadColor[1], inv_comp);
/* B */
VEC4_SCALAR(inv_comp, 1.0f - softpipe->blend_color.color[2]);
VEC4_MUL(source[2], quadColor[2], inv_comp);
}
break;
case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
{
float inv_alpha[4];
VEC4_SCALAR(inv_alpha, 1.0f - softpipe->blend_color.color[3]);
VEC4_MUL(source[0], quadColor[0], inv_alpha); /* R */
VEC4_MUL(source[1], quadColor[1], inv_alpha); /* G */
VEC4_MUL(source[2], quadColor[2], inv_alpha); /* B */
}
break;
case PIPE_BLENDFACTOR_INV_SRC1_COLOR:
assert(0); /* to do */
break;
case PIPE_BLENDFACTOR_INV_SRC1_ALPHA:
assert(0); /* to do */
break;
default:
assert(0);
}
/*
* Compute src/first term A
*/
switch (softpipe->blend->rt[cbuf].alpha_src_factor) {
case PIPE_BLENDFACTOR_ONE:
VEC4_COPY(source[3], quadColor[3]); /* A */
break;
case PIPE_BLENDFACTOR_SRC_COLOR:
/* fall-through */
case PIPE_BLENDFACTOR_SRC_ALPHA:
{
const float *alpha = quadColor[3];
VEC4_MUL(source[3], quadColor[3], alpha); /* A */
}
break;
case PIPE_BLENDFACTOR_DST_COLOR:
/* fall-through */
case PIPE_BLENDFACTOR_DST_ALPHA:
VEC4_MUL(source[3], quadColor[3], dest[3]); /* A */
break;
case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
/* multiply alpha by 1.0 */
VEC4_COPY(source[3], quadColor[3]); /* A */
break;
case PIPE_BLENDFACTOR_CONST_COLOR:
/* fall-through */
case PIPE_BLENDFACTOR_CONST_ALPHA:
{
float comp[4];
VEC4_SCALAR(comp, softpipe->blend_color.color[3]); /* A */
VEC4_MUL(source[3], quadColor[3], comp); /* A */
}
break;
case PIPE_BLENDFACTOR_ZERO:
VEC4_COPY(source[3], zero); /* A */
break;
case PIPE_BLENDFACTOR_INV_SRC_COLOR:
/* fall-through */
case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
{
float inv_alpha[4];
VEC4_SUB(inv_alpha, one, quadColor[3]);
VEC4_MUL(source[3], quadColor[3], inv_alpha); /* A */
}
break;
case PIPE_BLENDFACTOR_INV_DST_COLOR:
/* fall-through */
case PIPE_BLENDFACTOR_INV_DST_ALPHA:
{
float inv_alpha[4];
VEC4_SUB(inv_alpha, one, dest[3]);
VEC4_MUL(source[3], quadColor[3], inv_alpha); /* A */
}
break;
case PIPE_BLENDFACTOR_INV_CONST_COLOR:
/* fall-through */
case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
{
float inv_comp[4];
/* A */
VEC4_SCALAR(inv_comp, 1.0f - softpipe->blend_color.color[3]);
VEC4_MUL(source[3], quadColor[3], inv_comp);
}
break;
default:
assert(0);
}
/*
* Compute dest/second term RGB
*/
switch (softpipe->blend->rt[cbuf].rgb_dst_factor) {
case PIPE_BLENDFACTOR_ONE:
/* dest = dest * 1 NO-OP, leave dest as-is */
break;
case PIPE_BLENDFACTOR_SRC_COLOR:
VEC4_MUL(dest[0], dest[0], quadColor[0]); /* R */
VEC4_MUL(dest[1], dest[1], quadColor[1]); /* G */
VEC4_MUL(dest[2], dest[2], quadColor[2]); /* B */
break;
case PIPE_BLENDFACTOR_SRC_ALPHA:
VEC4_MUL(dest[0], dest[0], quadColor[3]); /* R * A */
VEC4_MUL(dest[1], dest[1], quadColor[3]); /* G * A */
VEC4_MUL(dest[2], dest[2], quadColor[3]); /* B * A */
break;
case PIPE_BLENDFACTOR_DST_ALPHA:
VEC4_MUL(dest[0], dest[0], dest[3]); /* R * A */
VEC4_MUL(dest[1], dest[1], dest[3]); /* G * A */
VEC4_MUL(dest[2], dest[2], dest[3]); /* B * A */
break;
case PIPE_BLENDFACTOR_DST_COLOR:
VEC4_MUL(dest[0], dest[0], dest[0]); /* R */
VEC4_MUL(dest[1], dest[1], dest[1]); /* G */
VEC4_MUL(dest[2], dest[2], dest[2]); /* B */
break;
case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
{
const float *alpha = quadColor[3];
float diff[4], temp[4];
VEC4_SUB(diff, one, dest[3]);
VEC4_MIN(temp, alpha, diff);
VEC4_MUL(dest[0], quadColor[0], temp); /* R */
VEC4_MUL(dest[1], quadColor[1], temp); /* G */
VEC4_MUL(dest[2], quadColor[2], temp); /* B */
}
break;
case PIPE_BLENDFACTOR_CONST_COLOR:
{
float comp[4];
VEC4_SCALAR(comp, softpipe->blend_color.color[0]); /* R */
VEC4_MUL(dest[0], dest[0], comp); /* R */
VEC4_SCALAR(comp, softpipe->blend_color.color[1]); /* G */
VEC4_MUL(dest[1], dest[1], comp); /* G */
VEC4_SCALAR(comp, softpipe->blend_color.color[2]); /* B */
VEC4_MUL(dest[2], dest[2], comp); /* B */
}
break;
case PIPE_BLENDFACTOR_CONST_ALPHA:
{
float comp[4];
VEC4_SCALAR(comp, softpipe->blend_color.color[3]); /* A */
VEC4_MUL(dest[0], dest[0], comp); /* R */
VEC4_MUL(dest[1], dest[1], comp); /* G */
VEC4_MUL(dest[2], dest[2], comp); /* B */
}
break;
case PIPE_BLENDFACTOR_ZERO:
VEC4_COPY(dest[0], zero); /* R */
VEC4_COPY(dest[1], zero); /* G */
VEC4_COPY(dest[2], zero); /* B */
break;
case PIPE_BLENDFACTOR_SRC1_COLOR:
case PIPE_BLENDFACTOR_SRC1_ALPHA:
/* XXX what are these? */
assert(0);
break;
case PIPE_BLENDFACTOR_INV_SRC_COLOR:
{
float inv_comp[4];
VEC4_SUB(inv_comp, one, quadColor[0]); /* R */
VEC4_MUL(dest[0], inv_comp, dest[0]); /* R */
VEC4_SUB(inv_comp, one, quadColor[1]); /* G */
VEC4_MUL(dest[1], inv_comp, dest[1]); /* G */
VEC4_SUB(inv_comp, one, quadColor[2]); /* B */
VEC4_MUL(dest[2], inv_comp, dest[2]); /* B */
}
break;
case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
{
float one_minus_alpha[QUAD_SIZE];
VEC4_SUB(one_minus_alpha, one, quadColor[3]);
VEC4_MUL(dest[0], dest[0], one_minus_alpha); /* R */
VEC4_MUL(dest[1], dest[1], one_minus_alpha); /* G */
VEC4_MUL(dest[2], dest[2], one_minus_alpha); /* B */
}
break;
case PIPE_BLENDFACTOR_INV_DST_ALPHA:
{
float inv_comp[4];
VEC4_SUB(inv_comp, one, dest[3]); /* A */
VEC4_MUL(dest[0], inv_comp, dest[0]); /* R */
VEC4_MUL(dest[1], inv_comp, dest[1]); /* G */
VEC4_MUL(dest[2], inv_comp, dest[2]); /* B */
}
break;
case PIPE_BLENDFACTOR_INV_DST_COLOR:
{
float inv_comp[4];
VEC4_SUB(inv_comp, one, dest[0]); /* R */
VEC4_MUL(dest[0], dest[0], inv_comp); /* R */
VEC4_SUB(inv_comp, one, dest[1]); /* G */
VEC4_MUL(dest[1], dest[1], inv_comp); /* G */
VEC4_SUB(inv_comp, one, dest[2]); /* B */
VEC4_MUL(dest[2], dest[2], inv_comp); /* B */
}
break;
case PIPE_BLENDFACTOR_INV_CONST_COLOR:
{
float inv_comp[4];
/* R */
VEC4_SCALAR(inv_comp, 1.0f - softpipe->blend_color.color[0]);
VEC4_MUL(dest[0], dest[0], inv_comp);
/* G */
VEC4_SCALAR(inv_comp, 1.0f - softpipe->blend_color.color[1]);
VEC4_MUL(dest[1], dest[1], inv_comp);
/* B */
VEC4_SCALAR(inv_comp, 1.0f - softpipe->blend_color.color[2]);
VEC4_MUL(dest[2], dest[2], inv_comp);
}
break;
case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
{
float inv_comp[4];
VEC4_SCALAR(inv_comp, 1.0f - softpipe->blend_color.color[3]);
VEC4_MUL(dest[0], dest[0], inv_comp);
VEC4_MUL(dest[1], dest[1], inv_comp);
VEC4_MUL(dest[2], dest[2], inv_comp);
}
break;
case PIPE_BLENDFACTOR_INV_SRC1_COLOR:
case PIPE_BLENDFACTOR_INV_SRC1_ALPHA:
/* XXX what are these? */
assert(0);
break;
default:
assert(0);
}
/*
* Compute dest/second term A
*/
switch (softpipe->blend->rt[cbuf].alpha_dst_factor) {
case PIPE_BLENDFACTOR_ONE:
/* dest = dest * 1 NO-OP, leave dest as-is */
break;
case PIPE_BLENDFACTOR_SRC_COLOR:
/* fall-through */
case PIPE_BLENDFACTOR_SRC_ALPHA:
VEC4_MUL(dest[3], dest[3], quadColor[3]); /* A * A */
break;
case PIPE_BLENDFACTOR_DST_COLOR:
/* fall-through */
case PIPE_BLENDFACTOR_DST_ALPHA:
VEC4_MUL(dest[3], dest[3], dest[3]); /* A */
break;
case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
/* dest = dest * 1 NO-OP, leave dest as-is */
break;
case PIPE_BLENDFACTOR_CONST_COLOR:
/* fall-through */
case PIPE_BLENDFACTOR_CONST_ALPHA:
{
float comp[4];
VEC4_SCALAR(comp, softpipe->blend_color.color[3]); /* A */
VEC4_MUL(dest[3], dest[3], comp); /* A */
}
break;
case PIPE_BLENDFACTOR_ZERO:
VEC4_COPY(dest[3], zero); /* A */
break;
case PIPE_BLENDFACTOR_INV_SRC_COLOR:
/* fall-through */
case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
{
float one_minus_alpha[QUAD_SIZE];
VEC4_SUB(one_minus_alpha, one, quadColor[3]);
VEC4_MUL(dest[3], dest[3], one_minus_alpha); /* A */
}
break;
case PIPE_BLENDFACTOR_INV_DST_COLOR:
/* fall-through */
case PIPE_BLENDFACTOR_INV_DST_ALPHA:
{
float inv_comp[4];
VEC4_SUB(inv_comp, one, dest[3]); /* A */
VEC4_MUL(dest[3], inv_comp, dest[3]); /* A */
}
break;
case PIPE_BLENDFACTOR_INV_CONST_COLOR:
/* fall-through */
case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
{
float inv_comp[4];
VEC4_SCALAR(inv_comp, 1.0f - softpipe->blend_color.color[3]);
VEC4_MUL(dest[3], dest[3], inv_comp);
}
break;
default:
assert(0);
}
/*
* Combine RGB terms
*/
switch (softpipe->blend->rt[cbuf].rgb_func) {
case PIPE_BLEND_ADD:
VEC4_ADD_SAT(quadColor[0], source[0], dest[0]); /* R */
VEC4_ADD_SAT(quadColor[1], source[1], dest[1]); /* G */
VEC4_ADD_SAT(quadColor[2], source[2], dest[2]); /* B */
break;
case PIPE_BLEND_SUBTRACT:
VEC4_SUB_SAT(quadColor[0], source[0], dest[0]); /* R */
VEC4_SUB_SAT(quadColor[1], source[1], dest[1]); /* G */
VEC4_SUB_SAT(quadColor[2], source[2], dest[2]); /* B */
break;
case PIPE_BLEND_REVERSE_SUBTRACT:
VEC4_SUB_SAT(quadColor[0], dest[0], source[0]); /* R */
VEC4_SUB_SAT(quadColor[1], dest[1], source[1]); /* G */
VEC4_SUB_SAT(quadColor[2], dest[2], source[2]); /* B */
break;
case PIPE_BLEND_MIN:
VEC4_MIN(quadColor[0], source[0], dest[0]); /* R */
VEC4_MIN(quadColor[1], source[1], dest[1]); /* G */
VEC4_MIN(quadColor[2], source[2], dest[2]); /* B */
break;
case PIPE_BLEND_MAX:
VEC4_MAX(quadColor[0], source[0], dest[0]); /* R */
VEC4_MAX(quadColor[1], source[1], dest[1]); /* G */
VEC4_MAX(quadColor[2], source[2], dest[2]); /* B */
break;
default:
assert(0);
}
/*
* Combine A terms
*/
switch (softpipe->blend->rt[cbuf].alpha_func) {
case PIPE_BLEND_ADD:
VEC4_ADD_SAT(quadColor[3], source[3], dest[3]); /* A */
break;
case PIPE_BLEND_SUBTRACT:
VEC4_SUB_SAT(quadColor[3], source[3], dest[3]); /* A */
break;
case PIPE_BLEND_REVERSE_SUBTRACT:
VEC4_SUB_SAT(quadColor[3], dest[3], source[3]); /* A */
break;
case PIPE_BLEND_MIN:
VEC4_MIN(quadColor[3], source[3], dest[3]); /* A */
break;
case PIPE_BLEND_MAX:
VEC4_MAX(quadColor[3], source[3], dest[3]); /* A */
break;
default:
assert(0);
}
}
static void
colormask_quad(unsigned colormask,
float (*quadColor)[4],
float (*dest)[4])
{
/* R */
if (!(colormask & PIPE_MASK_R))
COPY_4V(quadColor[0], dest[0]);
/* G */
if (!(colormask & PIPE_MASK_G))
COPY_4V(quadColor[1], dest[1]);
/* B */
if (!(colormask & PIPE_MASK_B))
COPY_4V(quadColor[2], dest[2]);
/* A */
if (!(colormask & PIPE_MASK_A))
COPY_4V(quadColor[3], dest[3]);
}
static void
blend_fallback(struct quad_stage *qs,
struct quad_header *quads[],
unsigned nr)
{
struct softpipe_context *softpipe = qs->softpipe;
const struct pipe_blend_state *blend = softpipe->blend;
unsigned cbuf;
for (cbuf = 0; cbuf < softpipe->framebuffer.nr_cbufs; cbuf++)
{
float dest[4][QUAD_SIZE];
struct softpipe_cached_tile *tile
= sp_get_cached_tile(softpipe->cbuf_cache[cbuf],
quads[0]->input.x0,
quads[0]->input.y0);
uint q, i, j;
for (q = 0; q < nr; q++) {
struct quad_header *quad = quads[q];
float (*quadColor)[4] = quad->output.color[cbuf];
const int itx = (quad->input.x0 & (TILE_SIZE-1));
const int ity = (quad->input.y0 & (TILE_SIZE-1));
/* get/swizzle dest colors
*/
for (j = 0; j < QUAD_SIZE; j++) {
int x = itx + (j & 1);
int y = ity + (j >> 1);
for (i = 0; i < 4; i++) {
dest[i][j] = tile->data.color[y][x][i];
}
}
if (blend->logicop_enable) {
logicop_quad( qs, quadColor, dest );
}
else if (blend->rt[cbuf].blend_enable) {
blend_quad( qs, quadColor, dest, cbuf );
}
if (blend->rt[cbuf].colormask != 0xf)
colormask_quad( blend->rt[cbuf].colormask, quadColor, dest);
/* Output color values
*/
for (j = 0; j < QUAD_SIZE; j++) {
if (quad->inout.mask & (1 << j)) {
int x = itx + (j & 1);
int y = ity + (j >> 1);
for (i = 0; i < 4; i++) { /* loop over color chans */
tile->data.color[y][x][i] = quadColor[i][j];
}
}
}
}
}
}
static void
blend_single_add_src_alpha_inv_src_alpha(struct quad_stage *qs,
struct quad_header *quads[],
unsigned nr)
{
static const float one[4] = { 1, 1, 1, 1 };
float one_minus_alpha[QUAD_SIZE];
float dest[4][QUAD_SIZE];
float source[4][QUAD_SIZE];
uint i, j, q;
struct softpipe_cached_tile *tile
= sp_get_cached_tile(qs->softpipe->cbuf_cache[0],
quads[0]->input.x0,
quads[0]->input.y0);
for (q = 0; q < nr; q++) {
struct quad_header *quad = quads[q];
float (*quadColor)[4] = quad->output.color[0];
const float *alpha = quadColor[3];
const int itx = (quad->input.x0 & (TILE_SIZE-1));
const int ity = (quad->input.y0 & (TILE_SIZE-1));
/* get/swizzle dest colors */
for (j = 0; j < QUAD_SIZE; j++) {
int x = itx + (j & 1);
int y = ity + (j >> 1);
for (i = 0; i < 4; i++) {
dest[i][j] = tile->data.color[y][x][i];
}
}
VEC4_MUL(source[0], quadColor[0], alpha); /* R */
VEC4_MUL(source[1], quadColor[1], alpha); /* G */
VEC4_MUL(source[2], quadColor[2], alpha); /* B */
VEC4_MUL(source[3], quadColor[3], alpha); /* A */
VEC4_SUB(one_minus_alpha, one, alpha);
VEC4_MUL(dest[0], dest[0], one_minus_alpha); /* R */
VEC4_MUL(dest[1], dest[1], one_minus_alpha); /* G */
VEC4_MUL(dest[2], dest[2], one_minus_alpha); /* B */
VEC4_MUL(dest[3], dest[3], one_minus_alpha); /* B */
VEC4_ADD_SAT(quadColor[0], source[0], dest[0]); /* R */
VEC4_ADD_SAT(quadColor[1], source[1], dest[1]); /* G */
VEC4_ADD_SAT(quadColor[2], source[2], dest[2]); /* B */
VEC4_ADD_SAT(quadColor[3], source[3], dest[3]); /* A */
for (j = 0; j < QUAD_SIZE; j++) {
if (quad->inout.mask & (1 << j)) {
int x = itx + (j & 1);
int y = ity + (j >> 1);
for (i = 0; i < 4; i++) { /* loop over color chans */
tile->data.color[y][x][i] = quadColor[i][j];
}
}
}
}
}
static void
blend_single_add_one_one(struct quad_stage *qs,
struct quad_header *quads[],
unsigned nr)
{
float dest[4][QUAD_SIZE];
uint i, j, q;
struct softpipe_cached_tile *tile
= sp_get_cached_tile(qs->softpipe->cbuf_cache[0],
quads[0]->input.x0,
quads[0]->input.y0);
for (q = 0; q < nr; q++) {
struct quad_header *quad = quads[q];
float (*quadColor)[4] = quad->output.color[0];
const int itx = (quad->input.x0 & (TILE_SIZE-1));
const int ity = (quad->input.y0 & (TILE_SIZE-1));
/* get/swizzle dest colors */
for (j = 0; j < QUAD_SIZE; j++) {
int x = itx + (j & 1);
int y = ity + (j >> 1);
for (i = 0; i < 4; i++) {
dest[i][j] = tile->data.color[y][x][i];
}
}
VEC4_ADD_SAT(quadColor[0], quadColor[0], dest[0]); /* R */
VEC4_ADD_SAT(quadColor[1], quadColor[1], dest[1]); /* G */
VEC4_ADD_SAT(quadColor[2], quadColor[2], dest[2]); /* B */
VEC4_ADD_SAT(quadColor[3], quadColor[3], dest[3]); /* A */
for (j = 0; j < QUAD_SIZE; j++) {
if (quad->inout.mask & (1 << j)) {
int x = itx + (j & 1);
int y = ity + (j >> 1);
for (i = 0; i < 4; i++) { /* loop over color chans */
tile->data.color[y][x][i] = quadColor[i][j];
}
}
}
}
}
static void
single_output_color(struct quad_stage *qs,
struct quad_header *quads[],
unsigned nr)
{
uint i, j, q;
struct softpipe_cached_tile *tile
= sp_get_cached_tile(qs->softpipe->cbuf_cache[0],
quads[0]->input.x0,
quads[0]->input.y0);
for (q = 0; q < nr; q++) {
struct quad_header *quad = quads[q];
float (*quadColor)[4] = quad->output.color[0];
const int itx = (quad->input.x0 & (TILE_SIZE-1));
const int ity = (quad->input.y0 & (TILE_SIZE-1));
for (j = 0; j < QUAD_SIZE; j++) {
if (quad->inout.mask & (1 << j)) {
int x = itx + (j & 1);
int y = ity + (j >> 1);
for (i = 0; i < 4; i++) { /* loop over color chans */
tile->data.color[y][x][i] = quadColor[i][j];
}
}
}
}
}
static void
blend_noop(struct quad_stage *qs,
struct quad_header *quads[],
unsigned nr)
{
}
static void
choose_blend_quad(struct quad_stage *qs,
struct quad_header *quads[],
unsigned nr)
{
struct softpipe_context *softpipe = qs->softpipe;
const struct pipe_blend_state *blend = softpipe->blend;
qs->run = blend_fallback;
if (softpipe->framebuffer.nr_cbufs == 0) {
qs->run = blend_noop;
}
else if (!softpipe->blend->logicop_enable &&
softpipe->blend->rt[0].colormask == 0xf &&
softpipe->framebuffer.nr_cbufs == 1)
{
if (!blend->rt[0].blend_enable) {
qs->run = single_output_color;
}
else if (blend->rt[0].rgb_src_factor == blend->rt[0].alpha_src_factor &&
blend->rt[0].rgb_dst_factor == blend->rt[0].alpha_dst_factor &&
blend->rt[0].rgb_func == blend->rt[0].alpha_func)
{
if (blend->rt[0].alpha_func == PIPE_BLEND_ADD) {
if (blend->rt[0].rgb_src_factor == PIPE_BLENDFACTOR_ONE &&
blend->rt[0].rgb_dst_factor == PIPE_BLENDFACTOR_ONE) {
qs->run = blend_single_add_one_one;
}
else if (blend->rt[0].rgb_src_factor == PIPE_BLENDFACTOR_SRC_ALPHA &&
blend->rt[0].rgb_dst_factor == PIPE_BLENDFACTOR_INV_SRC_ALPHA)
qs->run = blend_single_add_src_alpha_inv_src_alpha;
}
}
}
qs->run(qs, quads, nr);
}
static void blend_begin(struct quad_stage *qs)
{
qs->run = choose_blend_quad;
}
static void blend_destroy(struct quad_stage *qs)
{
FREE( qs );
}
struct quad_stage *sp_quad_blend_stage( struct softpipe_context *softpipe )
{
struct quad_stage *stage = CALLOC_STRUCT(quad_stage);
stage->softpipe = softpipe;
stage->begin = blend_begin;
stage->run = choose_blend_quad;
stage->destroy = blend_destroy;
return stage;
}