773 lines
20 KiB
C
773 lines
20 KiB
C
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/**************************************************************************
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*
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* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#include <strings.h>
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#include "glheader.h"
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#include "macros.h"
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#include "enums.h"
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#include "texenvprogram.h"
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#include "shader/program.h"
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#include "shader/nvfragprog.h"
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#include "shader/arbfragparse.h"
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#define DISASSEM 1
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/* Use uregs to represent registers internally, translate to Mesa's
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* expected formats on emit.
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*
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* NOTE: These are passed by value extensively in this file rather
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* than as usual by pointer reference. If this disturbs you, try
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* remembering they are just 32bits in size.
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*
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* GCC is smart enough to deal with these dword-sized structures in
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* much the same way as if I had defined them as dwords and was using
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* macros to access and set the fields. This is much nicer and easier
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* to evolve.
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*/
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struct ureg {
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GLuint file:4;
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GLuint idx:8;
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GLuint negatebase:1;
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GLuint abs:1;
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GLuint negateabs:1;
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GLuint swz:12;
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GLuint pad:5;
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};
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const static struct ureg undef = {
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~0,
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~0,
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0,
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0,
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0,
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0,
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0
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};
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#define X 0
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#define Y 1
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#define Z 2
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#define W 3
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#define MAX_CONSTANT 32
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/* State used to build the fragment program:
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*/
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struct texenv_fragment_program {
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struct fragment_program *prog;
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GLcontext *ctx;
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GLfloat constant[MAX_CONSTANT][4];
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GLuint constant_flags[MAX_CONSTANT];
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GLuint nr_constants;
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GLuint temp_flag; /* Tracks temporary regs which are in
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* use.
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*/
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struct {
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GLuint reg; /* Hardware constant idx */
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const GLfloat *values; /* Pointer to tracked values */
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} param[MAX_CONSTANT];
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GLuint nr_params;
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GLboolean error;
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struct ureg src_texture; /* Reg containing sampled texture color,
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* else undef.
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*/
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struct ureg src_previous; /* Reg containing color from previous
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* stage. May need to be decl'd.
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*/
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GLuint last_tex_stage; /* Number of last enabled texture unit */
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};
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static struct ureg make_ureg(GLuint file, GLuint idx)
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{
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struct ureg reg;
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reg.file = file;
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reg.idx = idx;
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reg.negatebase = 0;
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reg.abs = 0;
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reg.negateabs = 0;
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reg.swz = SWIZZLE_NOOP;
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reg.pad = 0;
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return reg;
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}
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static struct ureg swizzle( struct ureg reg, int x, int y, int z, int w )
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{
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reg.swz = MAKE_SWIZZLE4(GET_SWZ(reg.swz, x),
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GET_SWZ(reg.swz, y),
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GET_SWZ(reg.swz, z),
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GET_SWZ(reg.swz, w));
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return reg;
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}
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static struct ureg swizzle1( struct ureg reg, int x )
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{
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return swizzle(reg, x, x, x, x);
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}
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static GLboolean is_undef( struct ureg reg )
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{
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return reg.file == 0xf;
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}
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static struct ureg get_temp( struct texenv_fragment_program *p )
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{
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int bit = ffs( ~p->temp_flag );
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if (!bit) {
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fprintf(stderr, "%s: out of temporaries\n", __FILE__);
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exit(1);
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}
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p->temp_flag |= 1<<(bit-1);
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return make_ureg(PROGRAM_TEMPORARY, (bit-1));
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}
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static void release_temps( struct texenv_fragment_program *p )
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{
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p->temp_flag = ~0x7;
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}
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static struct ureg emit_decl( struct texenv_fragment_program *p,
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GLuint type, GLuint nr )
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{
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struct ureg reg = make_ureg(type, nr);
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if (type == PROGRAM_INPUT) {
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p->prog->InputsRead |= 1<<nr;
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}
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else {
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/* Other ???
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*/
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}
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return reg;
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}
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static void emit_arg( struct fp_src_register *reg,
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struct ureg ureg )
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{
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reg->File = ureg.file;
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reg->Index = ureg.idx;
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reg->Swizzle = ureg.swz;
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reg->NegateBase = ureg.negatebase;
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reg->Abs = ureg.abs;
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reg->NegateAbs = ureg.negateabs;
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}
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static void emit_dst( struct fp_dst_register *dst,
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struct ureg ureg, GLuint mask )
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{
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dst->File = ureg.file;
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dst->Index = ureg.idx;
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dst->WriteMask = mask;
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dst->CondMask = 0;
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dst->CondSwizzle = 0;
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}
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static struct fp_instruction *
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emit_op(struct texenv_fragment_program *p,
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GLuint op,
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struct ureg dest,
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GLuint mask,
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GLuint saturate,
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struct ureg src0,
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struct ureg src1,
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struct ureg src2 )
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{
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GLuint nr = p->prog->Base.NumInstructions++;
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struct fp_instruction *inst = &p->prog->Instructions[nr];
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memset(inst, 0, sizeof(*inst));
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inst->Opcode = op;
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if (!is_undef(src0)) emit_arg( &inst->SrcReg[0], src0 );
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if (!is_undef(src1)) emit_arg( &inst->SrcReg[1], src1 );
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if (!is_undef(src2)) emit_arg( &inst->SrcReg[2], src2 );
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inst->Saturate = saturate;
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emit_dst( &inst->DstReg, dest, mask );
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return inst;
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}
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static struct ureg emit_arith( struct texenv_fragment_program *p,
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GLuint op,
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struct ureg dest,
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GLuint mask,
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GLuint saturate,
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struct ureg src0,
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struct ureg src1,
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struct ureg src2 )
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{
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emit_op(p, op, dest, mask, saturate, src0, src1, src2);
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p->prog->NumAluInstructions++;
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return dest;
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}
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static struct ureg emit_texld( struct texenv_fragment_program *p,
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GLuint op,
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struct ureg dest,
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GLuint destmask,
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GLuint tex_unit,
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GLuint tex_idx,
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struct ureg coord )
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{
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struct fp_instruction *inst = emit_op( p, op,
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dest, destmask,
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0, /* don't saturate? */
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coord, /* arg 0? */
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undef,
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undef);
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inst->TexSrcIdx = tex_idx;
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inst->TexSrcUnit = tex_unit;
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p->prog->NumTexInstructions++;
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if (coord.file != PROGRAM_INPUT &&
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(coord.idx < VERT_ATTRIB_TEX0 ||
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coord.idx > VERT_ATTRIB_TEX7)) {
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p->prog->NumTexIndirections++;
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}
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return dest;
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}
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static struct ureg emit_const1f( struct texenv_fragment_program *p, GLfloat c0 )
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{
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GLint reg, idx;
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for (reg = 0; reg < MAX_CONSTANT; reg++) {
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for (idx = 0; idx < 4; idx++) {
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if (!(p->constant_flags[reg] & (1<<idx)) ||
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p->constant[reg][idx] == c0) {
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p->constant[reg][idx] = c0;
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p->constant_flags[reg] |= 1<<idx;
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if (reg+1 > p->nr_constants) p->nr_constants = reg+1;
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return swizzle1(make_ureg(PROGRAM_LOCAL_PARAM, reg),idx);
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}
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}
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}
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fprintf(stderr, "%s: out of constants\n", __FUNCTION__);
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p->error = 1;
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return undef;
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}
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static struct ureg emit_const2f( struct texenv_fragment_program *p,
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GLfloat c0, GLfloat c1 )
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{
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GLint reg, idx;
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for (reg = 0; reg < MAX_CONSTANT; reg++) {
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if (p->constant_flags[reg] == 0xf)
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continue;
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for (idx = 0; idx < 3; idx++) {
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if (!(p->constant_flags[reg] & (3<<idx))) {
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p->constant[reg][idx] = c0;
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p->constant[reg][idx+1] = c1;
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p->constant_flags[reg] |= 3<<idx;
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if (reg+1 > p->nr_constants) p->nr_constants = reg+1;
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return swizzle(make_ureg(PROGRAM_LOCAL_PARAM, reg),idx,idx+1,idx,idx+1);
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}
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}
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}
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fprintf(stderr, "%s: out of constants\n", __FUNCTION__);
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p->error = 1;
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return undef;
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}
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static struct ureg emit_const4f( struct texenv_fragment_program *p,
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GLfloat c0, GLfloat c1, GLfloat c2, GLfloat c3 )
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{
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GLint reg;
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for (reg = 0; reg < MAX_CONSTANT; reg++) {
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if (p->constant_flags[reg] == 0xf &&
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p->constant[reg][0] == c0 &&
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p->constant[reg][1] == c1 &&
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p->constant[reg][2] == c2 &&
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p->constant[reg][3] == c3) {
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return make_ureg(PROGRAM_LOCAL_PARAM, reg);
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}
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else if (p->constant_flags[reg] == 0) {
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p->constant[reg][0] = c0;
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p->constant[reg][1] = c1;
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p->constant[reg][2] = c2;
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p->constant[reg][3] = c3;
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p->constant_flags[reg] = 0xf;
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if (reg+1 > p->nr_constants) p->nr_constants = reg+1;
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return make_ureg(PROGRAM_LOCAL_PARAM, reg);
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}
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}
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fprintf(stderr, "%s: out of constants\n", __FUNCTION__);
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p->error = 1;
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return undef;
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}
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static struct ureg emit_const4fv( struct texenv_fragment_program *p, const GLfloat *c )
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{
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return emit_const4f( p, c[0], c[1], c[2], c[3] );
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}
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static void program_error( struct texenv_fragment_program *p, const char *msg )
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{
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fprintf(stderr, "%s\n", msg);
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p->error = 1;
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}
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static GLuint translate_tex_src_bit( struct texenv_fragment_program *p,
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GLuint bit )
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{
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switch (bit) {
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case TEXTURE_1D_BIT: return TEXTURE_1D_INDEX;
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case TEXTURE_2D_BIT: return TEXTURE_2D_INDEX;
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case TEXTURE_RECT_BIT: return TEXTURE_RECT_INDEX;
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case TEXTURE_3D_BIT: return TEXTURE_3D_INDEX;
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case TEXTURE_CUBE_BIT: return TEXTURE_CUBE_INDEX;
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default: program_error(p, "TexSrcBit"); return 0;
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}
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}
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static struct ureg get_source( struct texenv_fragment_program *p,
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GLenum src, GLuint unit )
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{
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switch (src) {
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case GL_TEXTURE:
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if (is_undef(p->src_texture)) {
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|
|
GLuint dim = translate_tex_src_bit( p, p->ctx->Texture.Unit[unit]._ReallyEnabled);
|
||
|
|
struct ureg texcoord = emit_decl(p,
|
||
|
|
PROGRAM_INPUT,
|
||
|
|
VERT_ATTRIB_TEX0+unit);
|
||
|
|
struct ureg tmp = get_temp( p );
|
||
|
|
|
||
|
|
/* TODO: Use D0_MASK_XY where possible.
|
||
|
|
*/
|
||
|
|
p->src_texture = emit_texld( p, FP_OPCODE_TXP,
|
||
|
|
tmp, WRITEMASK_XYZW,
|
||
|
|
unit, dim, texcoord );
|
||
|
|
}
|
||
|
|
|
||
|
|
return p->src_texture;
|
||
|
|
|
||
|
|
/* Crossbar: */
|
||
|
|
case GL_TEXTURE0:
|
||
|
|
case GL_TEXTURE1:
|
||
|
|
case GL_TEXTURE2:
|
||
|
|
case GL_TEXTURE3:
|
||
|
|
case GL_TEXTURE4:
|
||
|
|
case GL_TEXTURE5:
|
||
|
|
case GL_TEXTURE6:
|
||
|
|
case GL_TEXTURE7: {
|
||
|
|
return undef;
|
||
|
|
}
|
||
|
|
|
||
|
|
case GL_CONSTANT:
|
||
|
|
return emit_const4fv( p, p->ctx->Texture.Unit[unit].EnvColor );
|
||
|
|
case GL_PRIMARY_COLOR:
|
||
|
|
return emit_decl(p, PROGRAM_INPUT, VERT_ATTRIB_COLOR0);
|
||
|
|
case GL_PREVIOUS:
|
||
|
|
default:
|
||
|
|
return emit_decl(p,
|
||
|
|
p->src_previous.file,
|
||
|
|
p->src_previous.idx);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static struct ureg emit_combine_source( struct texenv_fragment_program *p,
|
||
|
|
GLuint mask,
|
||
|
|
GLuint unit,
|
||
|
|
GLenum source,
|
||
|
|
GLenum operand )
|
||
|
|
{
|
||
|
|
struct ureg arg, src, one;
|
||
|
|
|
||
|
|
src = get_source(p, source, unit);
|
||
|
|
|
||
|
|
switch (operand) {
|
||
|
|
case GL_ONE_MINUS_SRC_COLOR:
|
||
|
|
/* Get unused tmp,
|
||
|
|
* Emit tmp = 1.0 - arg.xyzw
|
||
|
|
*/
|
||
|
|
arg = get_temp( p );
|
||
|
|
one = emit_const1f(p, 1);
|
||
|
|
return emit_arith( p, FP_OPCODE_SUB, arg, mask, 0, one, src, undef);
|
||
|
|
|
||
|
|
case GL_SRC_ALPHA:
|
||
|
|
if (mask == WRITEMASK_W)
|
||
|
|
return src;
|
||
|
|
else
|
||
|
|
return swizzle1( src, W );
|
||
|
|
case GL_ONE_MINUS_SRC_ALPHA:
|
||
|
|
/* Get unused tmp,
|
||
|
|
* Emit tmp = 1.0 - arg.wwww
|
||
|
|
*/
|
||
|
|
arg = get_temp( p );
|
||
|
|
one = emit_const1f(p, 1);
|
||
|
|
return emit_arith( p, FP_OPCODE_SUB, arg, mask, 0,
|
||
|
|
one, swizzle1(src, W), undef);
|
||
|
|
case GL_SRC_COLOR:
|
||
|
|
default:
|
||
|
|
return src;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
static int nr_args( GLenum mode )
|
||
|
|
{
|
||
|
|
switch (mode) {
|
||
|
|
case GL_REPLACE: return 1;
|
||
|
|
case GL_MODULATE: return 2;
|
||
|
|
case GL_ADD: return 2;
|
||
|
|
case GL_ADD_SIGNED: return 2;
|
||
|
|
case GL_INTERPOLATE: return 3;
|
||
|
|
case GL_SUBTRACT: return 2;
|
||
|
|
case GL_DOT3_RGB_EXT: return 2;
|
||
|
|
case GL_DOT3_RGBA_EXT: return 2;
|
||
|
|
case GL_DOT3_RGB: return 2;
|
||
|
|
case GL_DOT3_RGBA: return 2;
|
||
|
|
default: return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static GLboolean args_match( struct gl_texture_unit *texUnit )
|
||
|
|
{
|
||
|
|
int i, nr = nr_args(texUnit->_CurrentCombine->ModeRGB);
|
||
|
|
|
||
|
|
for (i = 0 ; i < nr ; i++) {
|
||
|
|
if (texUnit->_CurrentCombine->SourceA[i] != texUnit->_CurrentCombine->SourceRGB[i])
|
||
|
|
return GL_FALSE;
|
||
|
|
|
||
|
|
switch(texUnit->_CurrentCombine->OperandA[i]) {
|
||
|
|
case GL_SRC_ALPHA:
|
||
|
|
switch(texUnit->_CurrentCombine->OperandRGB[i]) {
|
||
|
|
case GL_SRC_COLOR:
|
||
|
|
case GL_SRC_ALPHA:
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return GL_FALSE;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case GL_ONE_MINUS_SRC_ALPHA:
|
||
|
|
switch(texUnit->_CurrentCombine->OperandRGB[i]) {
|
||
|
|
case GL_ONE_MINUS_SRC_COLOR:
|
||
|
|
case GL_ONE_MINUS_SRC_ALPHA:
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return GL_FALSE;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return GL_FALSE; /* impossible */
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return GL_TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static struct ureg emit_combine( struct texenv_fragment_program *p,
|
||
|
|
struct ureg dest,
|
||
|
|
GLuint mask,
|
||
|
|
GLuint saturate,
|
||
|
|
GLuint unit,
|
||
|
|
GLenum mode,
|
||
|
|
const GLenum *source,
|
||
|
|
const GLenum *operand)
|
||
|
|
{
|
||
|
|
int nr = nr_args(mode);
|
||
|
|
struct ureg src[3];
|
||
|
|
struct ureg tmp;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
for (i = 0; i < nr; i++)
|
||
|
|
src[i] = emit_combine_source( p, mask, unit, source[i], operand[i] );
|
||
|
|
|
||
|
|
switch (mode) {
|
||
|
|
case GL_REPLACE:
|
||
|
|
if (mask == WRITEMASK_XYZW && !saturate)
|
||
|
|
return src[0];
|
||
|
|
else
|
||
|
|
return emit_arith( p, FP_OPCODE_MOV, dest, mask, saturate, src[0], undef, undef );
|
||
|
|
case GL_MODULATE:
|
||
|
|
return emit_arith( p, FP_OPCODE_MUL, dest, mask, saturate,
|
||
|
|
src[0], src[1], undef );
|
||
|
|
case GL_ADD:
|
||
|
|
return emit_arith( p, FP_OPCODE_ADD, dest, mask, saturate,
|
||
|
|
src[0], src[1], undef );
|
||
|
|
case GL_ADD_SIGNED:
|
||
|
|
/* tmp = arg0 + arg1
|
||
|
|
* result = tmp + -.5
|
||
|
|
*/
|
||
|
|
tmp = emit_const1f(p, .5);
|
||
|
|
tmp = swizzle1(tmp,X);
|
||
|
|
emit_arith( p, FP_OPCODE_ADD, dest, mask, 0, src[0], src[1], undef );
|
||
|
|
emit_arith( p, FP_OPCODE_SUB, dest, mask, saturate, dest, tmp, undef );
|
||
|
|
return dest;
|
||
|
|
case GL_INTERPOLATE:
|
||
|
|
/* Arg0 * (Arg2) + Arg1 * (1-Arg2) -- note arguments are reordered:
|
||
|
|
*/
|
||
|
|
return emit_arith( p, FP_OPCODE_LRP, dest, mask, saturate, src[2], src[0], src[1] );
|
||
|
|
|
||
|
|
case GL_SUBTRACT:
|
||
|
|
return emit_arith( p, FP_OPCODE_SUB, dest, mask, saturate, src[0], src[1], undef );
|
||
|
|
|
||
|
|
case GL_DOT3_RGBA:
|
||
|
|
case GL_DOT3_RGBA_EXT:
|
||
|
|
case GL_DOT3_RGB_EXT:
|
||
|
|
case GL_DOT3_RGB: {
|
||
|
|
struct ureg tmp0 = get_temp( p );
|
||
|
|
struct ureg tmp1 = get_temp( p );
|
||
|
|
struct ureg neg1 = emit_const1f(p, -1);
|
||
|
|
struct ureg two = emit_const1f(p, 2);
|
||
|
|
|
||
|
|
/* tmp0 = 2*src0 - 1
|
||
|
|
* tmp1 = 2*src1 - 1
|
||
|
|
*
|
||
|
|
* dst = tmp0 dot3 tmp1
|
||
|
|
*/
|
||
|
|
emit_arith( p, FP_OPCODE_MAD, tmp0, WRITEMASK_XYZW, 0,
|
||
|
|
two, src[0], neg1);
|
||
|
|
|
||
|
|
if (memcmp(&src[0], &src[1], sizeof(struct ureg)) == 0)
|
||
|
|
tmp1 = tmp0;
|
||
|
|
else
|
||
|
|
emit_arith( p, FP_OPCODE_MAD, tmp1, WRITEMASK_XYZW, 0,
|
||
|
|
two, src[1], neg1);
|
||
|
|
emit_arith( p, FP_OPCODE_DP3, dest, mask, saturate, tmp0, tmp1, undef);
|
||
|
|
return dest;
|
||
|
|
}
|
||
|
|
|
||
|
|
default:
|
||
|
|
return src[0];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct ureg get_dest( struct texenv_fragment_program *p, int unit )
|
||
|
|
{
|
||
|
|
if (p->ctx->_TriangleCaps & DD_SEPARATE_SPECULAR)
|
||
|
|
return get_temp( p );
|
||
|
|
else if (unit != p->last_tex_stage)
|
||
|
|
return get_temp( p );
|
||
|
|
else
|
||
|
|
return make_ureg(PROGRAM_OUTPUT, VERT_ATTRIB_COLOR0);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
static struct ureg emit_texenv( struct texenv_fragment_program *p, int unit )
|
||
|
|
{
|
||
|
|
struct gl_texture_unit *texUnit = &p->ctx->Texture.Unit[unit];
|
||
|
|
GLuint saturate = (unit < p->last_tex_stage);
|
||
|
|
GLuint rgb_shift, alpha_shift;
|
||
|
|
struct ureg out, shift;
|
||
|
|
struct ureg dest = get_dest(p, unit);
|
||
|
|
|
||
|
|
if (!texUnit->_ReallyEnabled) {
|
||
|
|
return get_source(p, GL_PREVIOUS, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
switch (texUnit->_CurrentCombine->ModeRGB) {
|
||
|
|
case GL_DOT3_RGB_EXT:
|
||
|
|
alpha_shift = texUnit->_CurrentCombine->ScaleShiftA;
|
||
|
|
rgb_shift = 0;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case GL_DOT3_RGBA_EXT:
|
||
|
|
alpha_shift = 0;
|
||
|
|
rgb_shift = 0;
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
rgb_shift = texUnit->_CurrentCombine->ScaleShiftRGB;
|
||
|
|
alpha_shift = texUnit->_CurrentCombine->ScaleShiftA;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* Emit the RGB and A combine ops
|
||
|
|
*/
|
||
|
|
if (texUnit->_CurrentCombine->ModeRGB == texUnit->_CurrentCombine->ModeA &&
|
||
|
|
args_match( texUnit )) {
|
||
|
|
out = emit_combine( p, dest, WRITEMASK_XYZW, saturate,
|
||
|
|
unit,
|
||
|
|
texUnit->_CurrentCombine->ModeRGB,
|
||
|
|
texUnit->_CurrentCombine->SourceRGB,
|
||
|
|
texUnit->_CurrentCombine->OperandRGB );
|
||
|
|
}
|
||
|
|
else if (texUnit->_CurrentCombine->ModeRGB == GL_DOT3_RGBA_EXT ||
|
||
|
|
texUnit->_CurrentCombine->ModeRGB == GL_DOT3_RGBA) {
|
||
|
|
|
||
|
|
out = emit_combine( p, dest, WRITEMASK_XYZW, saturate,
|
||
|
|
unit,
|
||
|
|
texUnit->_CurrentCombine->ModeRGB,
|
||
|
|
texUnit->_CurrentCombine->SourceRGB,
|
||
|
|
texUnit->_CurrentCombine->OperandRGB );
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
/* Need to do something to stop from re-emitting identical
|
||
|
|
* argument calculations here:
|
||
|
|
*/
|
||
|
|
out = emit_combine( p, dest, WRITEMASK_XYZ, saturate,
|
||
|
|
unit,
|
||
|
|
texUnit->_CurrentCombine->ModeRGB,
|
||
|
|
texUnit->_CurrentCombine->SourceRGB,
|
||
|
|
texUnit->_CurrentCombine->OperandRGB );
|
||
|
|
out = emit_combine( p, dest, WRITEMASK_W, saturate,
|
||
|
|
unit,
|
||
|
|
texUnit->_CurrentCombine->ModeA,
|
||
|
|
texUnit->_CurrentCombine->SourceA,
|
||
|
|
texUnit->_CurrentCombine->OperandA );
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Deal with the final shift:
|
||
|
|
*/
|
||
|
|
if (alpha_shift || rgb_shift) {
|
||
|
|
if (rgb_shift == alpha_shift) {
|
||
|
|
shift = emit_const1f(p, 1<<rgb_shift);
|
||
|
|
shift = swizzle1(shift,X);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
shift = emit_const2f(p, 1<<rgb_shift, 1<<alpha_shift);
|
||
|
|
shift = swizzle(shift,X,X,X,Y);
|
||
|
|
}
|
||
|
|
return emit_arith( p, FP_OPCODE_MUL, dest, WRITEMASK_XYZW,
|
||
|
|
saturate, out, shift, undef );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
return out;
|
||
|
|
}
|
||
|
|
|
||
|
|
void _mesa_UpdateTexEnvProgram( GLcontext *ctx )
|
||
|
|
{
|
||
|
|
struct texenv_fragment_program p;
|
||
|
|
GLuint unit;
|
||
|
|
struct ureg cf, out;
|
||
|
|
|
||
|
|
p.ctx = ctx;
|
||
|
|
p.prog = &ctx->_TexEnvProgram;
|
||
|
|
|
||
|
|
if (p.prog->Instructions == NULL) {
|
||
|
|
p.prog->Instructions = MALLOC(sizeof(struct fp_instruction) * 100);
|
||
|
|
}
|
||
|
|
|
||
|
|
p.prog->Base.NumInstructions = 0;
|
||
|
|
p.prog->NumTexIndirections = 1; /* correct? */
|
||
|
|
p.prog->NumTexInstructions = 0;
|
||
|
|
p.prog->NumAluInstructions = 0;
|
||
|
|
|
||
|
|
memset( p.constant_flags, 0, sizeof(p.constant_flags) );
|
||
|
|
|
||
|
|
p.src_texture = undef;
|
||
|
|
p.src_previous = make_ureg(PROGRAM_INPUT, VERT_ATTRIB_COLOR0);
|
||
|
|
p.last_tex_stage = 0;
|
||
|
|
|
||
|
|
if (ctx->Texture._EnabledUnits) {
|
||
|
|
for (unit = 0 ; unit < ctx->Const.MaxTextureUnits ; unit++)
|
||
|
|
if (ctx->Texture.Unit[unit]._ReallyEnabled) {
|
||
|
|
p.last_tex_stage = unit;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (unit = 0 ; unit < ctx->Const.MaxTextureUnits; unit++)
|
||
|
|
if (ctx->Texture.Unit[unit]._ReallyEnabled) {
|
||
|
|
p.src_previous = emit_texenv( &p, unit );
|
||
|
|
p.src_texture = undef;
|
||
|
|
p.temp_flag = 0xffff000;
|
||
|
|
p.temp_flag |= 1 << p.src_previous.idx;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
cf = get_source( &p, GL_PREVIOUS, 0 );
|
||
|
|
out = make_ureg( PROGRAM_OUTPUT, VERT_ATTRIB_COLOR0 );
|
||
|
|
|
||
|
|
if (ctx->_TriangleCaps & DD_SEPARATE_SPECULAR) {
|
||
|
|
/* Emit specular add.
|
||
|
|
*/
|
||
|
|
struct ureg s = emit_decl(&p, PROGRAM_INPUT, VERT_ATTRIB_COLOR1);
|
||
|
|
emit_arith( &p, FP_OPCODE_ADD, out, WRITEMASK_XYZ, 0, cf, s, undef );
|
||
|
|
}
|
||
|
|
else if (memcmp(&cf, &out, sizeof(cf)) != 0) {
|
||
|
|
/* Will wind up in here if no texture enabled or a couple of
|
||
|
|
* other scenarios (GL_REPLACE for instance).
|
||
|
|
*/
|
||
|
|
emit_arith( &p, FP_OPCODE_MOV, out, WRITEMASK_XYZW, 0, cf, undef, undef );
|
||
|
|
}
|
||
|
|
|
||
|
|
if (p.prog->NumTexIndirections > ctx->Const.MaxFragmentProgramTexIndirections)
|
||
|
|
program_error(&p, "Exceeded max nr indirect texture lookups");
|
||
|
|
|
||
|
|
if (p.prog->NumTexInstructions > ctx->Const.MaxFragmentProgramTexInstructions)
|
||
|
|
program_error(&p, "Exceeded max TEX instructions");
|
||
|
|
|
||
|
|
if (p.prog->NumAluInstructions > ctx->Const.MaxFragmentProgramAluInstructions)
|
||
|
|
program_error(&p, "Exceeded max ALU instructions");
|
||
|
|
|
||
|
|
#if DISASSEM
|
||
|
|
_mesa_debug_fp_inst(p.prog->NumTexInstructions + p.prog->NumAluInstructions,
|
||
|
|
p.prog->Instructions);
|
||
|
|
_mesa_printf("\n");
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
|