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/**************************************************************************
*
* Copyright 2003 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.
*
**************************************************************************/
#if 0
#include <strings.h>
#include "glheader.h"
#include "macros.h"
#include "enums.h"
#endif
#include "i915_fpc.h"
void
i915_program_error(struct i915_fp_compile *p, const char *msg)
{
fprintf(stderr, "i915_program_error: %s", msg);
p->fp->error = 1;
}
static struct i915_fp_compile *
i915_init_compile(struct i915_context *i915, struct i915_fragment_program *fp)
{
struct i915_fp_compile *p = CALLOC_STRUCT(i915_fp_compile);
p->fp = fp;
#if 0
p->env_param = NULL; /*i915->intel.ctx.FragmentProgram.Parameters;*/
#endif
p->constants = i915->fs.constants;
p->nr_tex_indirect = 1; /* correct? */
p->nr_tex_insn = 0;
p->nr_alu_insn = 0;
p->nr_decl_insn = 0;
memset(p->constant_flags, 0, sizeof(p->constant_flags));
p->csr = p->program;
p->decl = p->declarations;
p->decl_s = 0;
p->decl_t = 0;
p->temp_flag = 0xffff000;
p->utemp_flag = ~0x7;
#if 0
p->fp->translated = 0;
p->fp->error = 0;
p->fp->nr_constants = 0;
#endif
p->fp->wpos_tex = -1;
p->fp->nr_params = 0;
*(p->decl++) = _3DSTATE_PIXEL_SHADER_PROGRAM;
return p;
}
/* Copy compile results to the fragment program struct and destroy the
* compilation context.
*/
static void
i915_fini_compile(struct i915_fp_compile *p)
{
uint program_size = p->csr - p->program;
uint decl_size = p->decl - p->declarations;
if (p->nr_tex_indirect > I915_MAX_TEX_INDIRECT)
i915_program_error(p, "Exceeded max nr indirect texture lookups");
if (p->nr_tex_insn > I915_MAX_TEX_INSN)
i915_program_error(p, "Exceeded max TEX instructions");
if (p->nr_alu_insn > I915_MAX_ALU_INSN)
i915_program_error(p, "Exceeded max ALU instructions");
if (p->nr_decl_insn > I915_MAX_DECL_INSN)
i915_program_error(p, "Exceeded max DECL instructions");
if (p->fp->error) {
p->fp->NumNativeInstructions = 0;
p->fp->NumNativeAluInstructions = 0;
p->fp->NumNativeTexInstructions = 0;
p->fp->NumNativeTexIndirections = 0;
return;
}
else {
p->fp->NumNativeInstructions = (p->nr_alu_insn +
p->nr_tex_insn +
p->nr_decl_insn);
p->fp->NumNativeAluInstructions = p->nr_alu_insn;
p->fp->NumNativeTexInstructions = p->nr_tex_insn;
p->fp->NumNativeTexIndirections = p->nr_tex_indirect;
}
p->declarations[0] |= program_size + decl_size - 2;
/* Copy compilation results to fragment program struct:
*/
memcpy(p->fp->program,
p->declarations,
decl_size * sizeof(uint));
memcpy(p->fp->program + decl_size,
p->program,
program_size * sizeof(uint));
p->fp->program_size = program_size + decl_size;
/* Release the compilation struct:
*/
free(p);
}
/**
* Find an unused texture coordinate slot to use for fragment WPOS.
* Update p->fp->wpos_tex with the result (-1 if no used texcoord slot is found).
*/
static void
find_wpos_space(struct i915_fp_compile *p)
{
const uint inputs = p->shader->inputs_read;
uint i;
p->fp->wpos_tex = -1;
if (inputs & FRAG_BIT_WPOS) {
for (i = 0; i < I915_TEX_UNITS; i++) {
if ((inputs & (FRAG_BIT_TEX0 << i)) == 0) {
p->fp->wpos_tex = i;
return;
}
}
i915_program_error(p, "No free texcoord for wpos value");
}
}
void i915_compile_fragment_program( struct i915_context *i915,
struct i915_fragment_program *fp )
{
struct i915_fp_compile *p = i915_init_compile(i915, fp);
struct tgsi_token *tokens = i915->fs.tokens;
find_wpos_space(p);
i915_translate_program(p, tokens);
i915_fixup_depth_write(p);
i915_fini_compile(p);
#if 0
fp->translated = 1;
#endif
}
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