diff options
Diffstat (limited to 'src/mesa/pipe/i915simple/i915_fpc.c')
| -rw-r--r-- | src/mesa/pipe/i915simple/i915_fpc.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/src/mesa/pipe/i915simple/i915_fpc.c b/src/mesa/pipe/i915simple/i915_fpc.c new file mode 100644 index 00000000000..fd0bbbc4824 --- /dev/null +++ b/src/mesa/pipe/i915simple/i915_fpc.c @@ -0,0 +1,183 @@ +/************************************************************************** + * + * 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 +} |