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/**************************************************************************
*
* 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.
*
**************************************************************************/
/**
* Execute fragment shader using LLVM code generation.
* Authors:
* Zack Rusin
*/
#include "lp_context.h"
#include "lp_state.h"
#include "lp_fs.h"
#include "pipe/p_state.h"
#include "pipe/p_defines.h"
#include "util/u_memory.h"
#include "tgsi/tgsi_sse2.h"
#if 0
/**
* Subclass of lp_fragment_shader
*/
struct lp_llvm_fragment_shader
{
struct lp_fragment_shader base;
struct gallivm_prog *llvm_prog;
};
static void
shade_quad_llvm(struct quad_stage *qs,
struct quad_header *quad)
{
struct quad_shade_stage *qss = quad_shade_stage(qs);
struct llvmpipe_context *llvmpipe = qs->llvmpipe;
float dests[4][16][4] ALIGN16_ATTRIB;
float inputs[4][16][4] ALIGN16_ATTRIB;
const float fx = (float) quad->x0;
const float fy = (float) quad->y0;
struct gallivm_prog *llvm = qss->llvm_prog;
inputs[0][0][0] = fx;
inputs[1][0][0] = fx + 1.0f;
inputs[2][0][0] = fx;
inputs[3][0][0] = fx + 1.0f;
inputs[0][0][1] = fy;
inputs[1][0][1] = fy;
inputs[2][0][1] = fy + 1.0f;
inputs[3][0][1] = fy + 1.0f;
gallivm_prog_inputs_interpolate(llvm, inputs, quad->coef);
#if DLLVM
debug_printf("MASK = %d\n", quad->mask);
for (int i = 0; i < 4; ++i) {
for (int j = 0; j < 2; ++j) {
debug_printf("IN(%d,%d) [%f %f %f %f]\n", i, j,
inputs[i][j][0], inputs[i][j][1], inputs[i][j][2], inputs[i][j][3]);
}
}
#endif
quad->mask &=
gallivm_fragment_shader_exec(llvm, fx, fy, dests, inputs,
llvmpipe->mapped_constants[PIPE_SHADER_FRAGMENT],
qss->samplers);
#if DLLVM
debug_printf("OUT LLVM = 1[%f %f %f %f], 2[%f %f %f %f]\n",
dests[0][0][0], dests[0][0][1], dests[0][0][2], dests[0][0][3],
dests[0][1][0], dests[0][1][1], dests[0][1][2], dests[0][1][3]);
#endif
/* store result color */
if (qss->colorOutSlot >= 0) {
unsigned i;
/* XXX need to handle multiple color outputs someday */
allvmrt(qss->stage.llvmpipe->fs->info.output_semantic_name[qss->colorOutSlot]
== TGSI_SEMANTIC_COLOR);
for (i = 0; i < QUAD_SIZE; ++i) {
quad->outputs.color[0][0][i] = dests[i][qss->colorOutSlot][0];
quad->outputs.color[0][1][i] = dests[i][qss->colorOutSlot][1];
quad->outputs.color[0][2][i] = dests[i][qss->colorOutSlot][2];
quad->outputs.color[0][3][i] = dests[i][qss->colorOutSlot][3];
}
}
#if DLLVM
for (int i = 0; i < QUAD_SIZE; ++i) {
debug_printf("QLLVM%d(%d) [%f, %f, %f, %f]\n", i, qss->colorOutSlot,
quad->outputs.color[0][0][i],
quad->outputs.color[0][1][i],
quad->outputs.color[0][2][i],
quad->outputs.color[0][3][i]);
}
#endif
/* store result Z */
if (qss->depthOutSlot >= 0) {
/* output[slot] is new Z */
uint i;
for (i = 0; i < 4; i++) {
quad->outputs.depth[i] = dests[i][0][2];
}
}
else {
/* copy input Z (which was interpolated by the executor) to output Z */
uint i;
for (i = 0; i < 4; i++) {
quad->outputs.depth[i] = inputs[i][0][2];
}
}
#if DLLVM
debug_printf("D [%f, %f, %f, %f] mask = %d\n",
quad->outputs.depth[0],
quad->outputs.depth[1],
quad->outputs.depth[2],
quad->outputs.depth[3], quad->mask);
#endif
/* shader may cull fragments */
if( quad->mask ) {
qs->next->run( qs->next, quad );
}
}
unsigned
run_llvm_fs( const struct lp_fragment_shader *base,
struct foo *machine )
{
}
void
delete_llvm_fs( struct lp_fragment_shader *base )
{
FREE(base);
}
struct lp_fragment_shader *
llvmpipe_create_fs_llvm(struct llvmpipe_context *llvmpipe,
const struct pipe_shader_state *templ)
{
struct lp_llvm_fragment_shader *shader = NULL;
/* LLVM fragment shaders currently disabled:
*/
state = CALLOC_STRUCT(lp_llvm_shader_state);
if (!state)
return NULL;
state->llvm_prog = 0;
if (!gallivm_global_cpu_engine()) {
gallivm_cpu_engine_create(state->llvm_prog);
}
else
gallivm_cpu_jit_compile(gallivm_global_cpu_engine(), state->llvm_prog);
if (shader) {
shader->base.run = run_llvm_fs;
shader->base.delete = delete_llvm_fs;
}
return shader;
}
#else
struct lp_fragment_shader *
llvmpipe_create_fs_llvm(struct llvmpipe_context *llvmpipe,
const struct pipe_shader_state *templ)
{
return NULL;
}
#endif
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