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/*
* Copyright 2009 Nicolai Hähnle <nhaehnle@gmail.com>
*
* 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
* on 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 AUTHOR(S) AND/OR THEIR 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. */
#include "radeon_compiler.h"
#include <stdarg.h>
#include "radeon_program.h"
void rc_init(struct radeon_compiler * c)
{
memset(c, 0, sizeof(*c));
memory_pool_init(&c->Pool);
c->Program.Instructions.Prev = &c->Program.Instructions;
c->Program.Instructions.Next = &c->Program.Instructions;
c->Program.Instructions.I.Opcode = OPCODE_END;
}
void rc_destroy(struct radeon_compiler * c)
{
rc_constants_destroy(&c->Program.Constants);
memory_pool_destroy(&c->Pool);
free(c->ErrorMsg);
}
void rc_debug(struct radeon_compiler * c, const char * fmt, ...)
{
va_list ap;
if (!c->Debug)
return;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
}
void rc_error(struct radeon_compiler * c, const char * fmt, ...)
{
va_list ap;
c->Error = GL_TRUE;
if (!c->ErrorMsg) {
/* Only remember the first error */
char buf[1024];
int written;
va_start(ap, fmt);
written = vsnprintf(buf, sizeof(buf), fmt, ap);
va_end(ap);
if (written < sizeof(buf)) {
c->ErrorMsg = strdup(buf);
} else {
c->ErrorMsg = malloc(written + 1);
va_start(ap, fmt);
vsnprintf(c->ErrorMsg, written + 1, fmt, ap);
va_end(ap);
}
}
if (c->Debug) {
fprintf(stderr, "r300compiler error: ");
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
}
}
/**
* Rewrite the program such that everything that source the given input
* register will source new_input instead.
*/
void rc_move_input(struct radeon_compiler * c, unsigned input, struct prog_src_register new_input)
{
struct rc_instruction * inst;
c->Program.InputsRead &= ~(1 << input);
for(inst = c->Program.Instructions.Next; inst != &c->Program.Instructions; inst = inst->Next) {
const unsigned numsrcs = _mesa_num_inst_src_regs(inst->I.Opcode);
unsigned i;
for(i = 0; i < numsrcs; ++i) {
if (inst->I.SrcReg[i].File == PROGRAM_INPUT && inst->I.SrcReg[i].Index == input) {
inst->I.SrcReg[i].File = new_input.File;
inst->I.SrcReg[i].Index = new_input.Index;
inst->I.SrcReg[i].Swizzle = combine_swizzles(new_input.Swizzle, inst->I.SrcReg[i].Swizzle);
if (!inst->I.SrcReg[i].Abs) {
inst->I.SrcReg[i].Negate ^= new_input.Negate;
inst->I.SrcReg[i].Abs = new_input.Abs;
}
c->Program.InputsRead |= 1 << new_input.Index;
}
}
}
}
/**
* Introduce standard code fragment to deal with fragment.position.
*/
void rc_transform_fragment_wpos(struct radeon_compiler * c, unsigned wpos, unsigned new_input)
{
unsigned tempregi = rc_find_free_temporary(c);
c->Program.InputsRead &= ~(1 << wpos);
c->Program.InputsRead |= 1 << new_input;
/* perspective divide */
struct rc_instruction * inst_rcp = rc_insert_new_instruction(c, &c->Program.Instructions);
inst_rcp->I.Opcode = OPCODE_RCP;
inst_rcp->I.DstReg.File = PROGRAM_TEMPORARY;
inst_rcp->I.DstReg.Index = tempregi;
inst_rcp->I.DstReg.WriteMask = WRITEMASK_W;
inst_rcp->I.SrcReg[0].File = PROGRAM_INPUT;
inst_rcp->I.SrcReg[0].Index = new_input;
inst_rcp->I.SrcReg[0].Swizzle = SWIZZLE_WWWW;
struct rc_instruction * inst_mul = rc_insert_new_instruction(c, inst_rcp);
inst_mul->I.Opcode = OPCODE_MUL;
inst_mul->I.DstReg.File = PROGRAM_TEMPORARY;
inst_mul->I.DstReg.Index = tempregi;
inst_mul->I.DstReg.WriteMask = WRITEMASK_XYZ;
inst_mul->I.SrcReg[0].File = PROGRAM_INPUT;
inst_mul->I.SrcReg[0].Index = new_input;
inst_mul->I.SrcReg[1].File = PROGRAM_TEMPORARY;
inst_mul->I.SrcReg[1].Index = tempregi;
inst_mul->I.SrcReg[1].Swizzle = SWIZZLE_WWWW;
/* viewport transformation */
struct rc_instruction * inst_mad = rc_insert_new_instruction(c, inst_mul);
inst_mad->I.Opcode = OPCODE_MAD;
inst_mad->I.DstReg.File = PROGRAM_TEMPORARY;
inst_mad->I.DstReg.Index = tempregi;
inst_mad->I.DstReg.WriteMask = WRITEMASK_XYZ;
inst_mad->I.SrcReg[0].File = PROGRAM_TEMPORARY;
inst_mad->I.SrcReg[0].Index = tempregi;
inst_mad->I.SrcReg[0].Swizzle = MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_ZERO);
inst_mad->I.SrcReg[1].File = PROGRAM_STATE_VAR;
inst_mad->I.SrcReg[1].Index = rc_constants_add_state(&c->Program.Constants, RC_STATE_R300_WINDOW_DIMENSION, 0);
inst_mad->I.SrcReg[1].Swizzle = MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_ZERO);
inst_mad->I.SrcReg[2].File = PROGRAM_STATE_VAR;
inst_mad->I.SrcReg[2].Index = inst_mad->I.SrcReg[1].Index;
inst_mad->I.SrcReg[2].Swizzle = MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_ZERO);
struct rc_instruction * inst;
for (inst = inst_mad->Next; inst != &c->Program.Instructions; inst = inst->Next) {
const unsigned numsrcs = _mesa_num_inst_src_regs(inst->I.Opcode);
unsigned i;
for(i = 0; i < numsrcs; i++) {
if (inst->I.SrcReg[i].File == PROGRAM_INPUT &&
inst->I.SrcReg[i].Index == wpos) {
inst->I.SrcReg[i].File = PROGRAM_TEMPORARY;
inst->I.SrcReg[i].Index = tempregi;
}
}
}
}
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