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/**************************************************************************
*
* Copyright 2008 VMware, Inc.
* 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 VMWARE 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.
*
**************************************************************************/
#ifndef TGSI_TRANSFORM_H
#define TGSI_TRANSFORM_H
#include "pipe/p_shader_tokens.h"
#include "tgsi/tgsi_parse.h"
#include "tgsi/tgsi_build.h"
/**
* Subclass this to add caller-specific data
*/
struct tgsi_transform_context
{
/**** PUBLIC ***/
/**
* User-defined callbacks invoked per instruction.
*/
void (*transform_instruction)(struct tgsi_transform_context *ctx,
struct tgsi_full_instruction *inst);
void (*transform_declaration)(struct tgsi_transform_context *ctx,
struct tgsi_full_declaration *decl);
void (*transform_immediate)(struct tgsi_transform_context *ctx,
struct tgsi_full_immediate *imm);
void (*transform_property)(struct tgsi_transform_context *ctx,
struct tgsi_full_property *prop);
/**
* Called after last declaration, before first instruction. This is
* where the user might insert new declarations and/or instructions.
*/
void (*prolog)(struct tgsi_transform_context *ctx);
/**
* Called at end of input program to allow caller to append extra
* instructions. Return number of tokens emitted.
*/
void (*epilog)(struct tgsi_transform_context *ctx);
/*** PRIVATE ***/
/**
* These are setup by tgsi_transform_shader() and cannot be overridden.
* Meant to be called from in the above user callback functions.
*/
void (*emit_instruction)(struct tgsi_transform_context *ctx,
const struct tgsi_full_instruction *inst);
void (*emit_declaration)(struct tgsi_transform_context *ctx,
const struct tgsi_full_declaration *decl);
void (*emit_immediate)(struct tgsi_transform_context *ctx,
const struct tgsi_full_immediate *imm);
void (*emit_property)(struct tgsi_transform_context *ctx,
const struct tgsi_full_property *prop);
struct tgsi_header *header;
uint max_tokens_out;
struct tgsi_token *tokens_out;
uint ti;
};
/**
* Helper for emitting temporary register declarations.
*/
static INLINE void
tgsi_transform_temp_decl(struct tgsi_transform_context *ctx,
unsigned index)
{
struct tgsi_full_declaration decl;
decl = tgsi_default_full_declaration();
decl.Declaration.File = TGSI_FILE_TEMPORARY;
decl.Range.First =
decl.Range.Last = index;
ctx->emit_declaration(ctx, &decl);
}
static INLINE void
tgsi_transform_input_decl(struct tgsi_transform_context *ctx,
unsigned index,
unsigned sem_name, unsigned sem_index,
unsigned interp)
{
struct tgsi_full_declaration decl;
decl = tgsi_default_full_declaration();
decl.Declaration.File = TGSI_FILE_INPUT;
decl.Declaration.Interpolate = 1;
decl.Declaration.Semantic = 1;
decl.Semantic.Name = sem_name;
decl.Semantic.Index = sem_index;
decl.Range.First =
decl.Range.Last = index;
decl.Interp.Interpolate = interp;
ctx->emit_declaration(ctx, &decl);
}
static INLINE void
tgsi_transform_sampler_decl(struct tgsi_transform_context *ctx,
unsigned index)
{
struct tgsi_full_declaration decl;
decl = tgsi_default_full_declaration();
decl.Declaration.File = TGSI_FILE_SAMPLER;
decl.Range.First =
decl.Range.Last = index;
ctx->emit_declaration(ctx, &decl);
}
static INLINE void
tgsi_transform_immediate_decl(struct tgsi_transform_context *ctx,
float x, float y, float z, float w)
{
struct tgsi_full_immediate immed;
unsigned size = 4;
immed = tgsi_default_full_immediate();
immed.Immediate.NrTokens = 1 + size; /* one for the token itself */
immed.u[0].Float = x;
immed.u[1].Float = y;
immed.u[2].Float = z;
immed.u[3].Float = w;
ctx->emit_immediate(ctx, &immed);
}
/**
* Helper for emitting 1-operand instructions.
*/
static INLINE void
tgsi_transform_op1_inst(struct tgsi_transform_context *ctx,
unsigned opcode,
unsigned dst_file,
unsigned dst_index,
unsigned dst_writemask,
unsigned src0_file,
unsigned src0_index)
{
struct tgsi_full_instruction inst;
inst = tgsi_default_full_instruction();
inst.Instruction.Opcode = opcode;
inst.Instruction.NumDstRegs = 1;
inst.Dst[0].Register.File = dst_file,
inst.Dst[0].Register.Index = dst_index;
inst.Dst[0].Register.WriteMask = dst_writemask;
inst.Instruction.NumSrcRegs = 1;
inst.Src[0].Register.File = src0_file;
inst.Src[0].Register.Index = src0_index;
ctx->emit_instruction(ctx, &inst);
}
static INLINE void
tgsi_transform_op2_inst(struct tgsi_transform_context *ctx,
unsigned opcode,
unsigned dst_file,
unsigned dst_index,
unsigned dst_writemask,
unsigned src0_file,
unsigned src0_index,
unsigned src1_file,
unsigned src1_index)
{
struct tgsi_full_instruction inst;
inst = tgsi_default_full_instruction();
inst.Instruction.Opcode = opcode;
inst.Instruction.NumDstRegs = 1;
inst.Dst[0].Register.File = dst_file,
inst.Dst[0].Register.Index = dst_index;
inst.Dst[0].Register.WriteMask = dst_writemask;
inst.Instruction.NumSrcRegs = 2;
inst.Src[0].Register.File = src0_file;
inst.Src[0].Register.Index = src0_index;
inst.Src[1].Register.File = src1_file;
inst.Src[1].Register.Index = src1_index;
ctx->emit_instruction(ctx, &inst);
}
static INLINE void
tgsi_transform_op1_swz_inst(struct tgsi_transform_context *ctx,
unsigned opcode,
unsigned dst_file,
unsigned dst_index,
unsigned dst_writemask,
unsigned src0_file,
unsigned src0_index,
unsigned src0_swizzle)
{
struct tgsi_full_instruction inst;
inst = tgsi_default_full_instruction();
inst.Instruction.Opcode = opcode;
inst.Instruction.NumDstRegs = 1;
inst.Dst[0].Register.File = dst_file,
inst.Dst[0].Register.Index = dst_index;
inst.Dst[0].Register.WriteMask = dst_writemask;
inst.Instruction.NumSrcRegs = 1;
inst.Src[0].Register.File = src0_file;
inst.Src[0].Register.Index = src0_index;
switch (dst_writemask) {
case TGSI_WRITEMASK_X:
inst.Src[0].Register.SwizzleX = src0_swizzle;
break;
case TGSI_WRITEMASK_Y:
inst.Src[0].Register.SwizzleY = src0_swizzle;
break;
case TGSI_WRITEMASK_Z:
inst.Src[0].Register.SwizzleZ = src0_swizzle;
break;
case TGSI_WRITEMASK_W:
inst.Src[0].Register.SwizzleW = src0_swizzle;
break;
default:
; /* nothing */
}
ctx->emit_instruction(ctx, &inst);
}
static INLINE void
tgsi_transform_op2_swz_inst(struct tgsi_transform_context *ctx,
unsigned opcode,
unsigned dst_file,
unsigned dst_index,
unsigned dst_writemask,
unsigned src0_file,
unsigned src0_index,
unsigned src0_swizzle,
unsigned src1_file,
unsigned src1_index,
unsigned src1_swizzle)
{
struct tgsi_full_instruction inst;
inst = tgsi_default_full_instruction();
inst.Instruction.Opcode = opcode;
inst.Instruction.NumDstRegs = 1;
inst.Dst[0].Register.File = dst_file,
inst.Dst[0].Register.Index = dst_index;
inst.Dst[0].Register.WriteMask = dst_writemask;
inst.Instruction.NumSrcRegs = 2;
inst.Src[0].Register.File = src0_file;
inst.Src[0].Register.Index = src0_index;
inst.Src[1].Register.File = src1_file;
inst.Src[1].Register.Index = src1_index;
switch (dst_writemask) {
case TGSI_WRITEMASK_X:
inst.Src[0].Register.SwizzleX = src0_swizzle;
inst.Src[1].Register.SwizzleX = src1_swizzle;
break;
case TGSI_WRITEMASK_Y:
inst.Src[0].Register.SwizzleY = src0_swizzle;
inst.Src[1].Register.SwizzleY = src1_swizzle;
break;
case TGSI_WRITEMASK_Z:
inst.Src[0].Register.SwizzleZ = src0_swizzle;
inst.Src[1].Register.SwizzleZ = src1_swizzle;
break;
case TGSI_WRITEMASK_W:
inst.Src[0].Register.SwizzleW = src0_swizzle;
inst.Src[1].Register.SwizzleW = src1_swizzle;
break;
default:
; /* nothing */
}
ctx->emit_instruction(ctx, &inst);
}
static INLINE void
tgsi_transform_op3_swz_inst(struct tgsi_transform_context *ctx,
unsigned opcode,
unsigned dst_file,
unsigned dst_index,
unsigned dst_writemask,
unsigned src0_file,
unsigned src0_index,
unsigned src0_swizzle,
unsigned src0_negate,
unsigned src1_file,
unsigned src1_index,
unsigned src1_swizzle,
unsigned src2_file,
unsigned src2_index,
unsigned src2_swizzle)
{
struct tgsi_full_instruction inst;
inst = tgsi_default_full_instruction();
inst.Instruction.Opcode = opcode;
inst.Instruction.NumDstRegs = 1;
inst.Dst[0].Register.File = dst_file,
inst.Dst[0].Register.Index = dst_index;
inst.Dst[0].Register.WriteMask = dst_writemask;
inst.Instruction.NumSrcRegs = 3;
inst.Src[0].Register.File = src0_file;
inst.Src[0].Register.Index = src0_index;
inst.Src[0].Register.Negate = src0_negate;
inst.Src[1].Register.File = src1_file;
inst.Src[1].Register.Index = src1_index;
inst.Src[2].Register.File = src2_file;
inst.Src[2].Register.Index = src2_index;
switch (dst_writemask) {
case TGSI_WRITEMASK_X:
inst.Src[0].Register.SwizzleX = src0_swizzle;
inst.Src[1].Register.SwizzleX = src1_swizzle;
inst.Src[2].Register.SwizzleX = src2_swizzle;
break;
case TGSI_WRITEMASK_Y:
inst.Src[0].Register.SwizzleY = src0_swizzle;
inst.Src[1].Register.SwizzleY = src1_swizzle;
inst.Src[2].Register.SwizzleY = src2_swizzle;
break;
case TGSI_WRITEMASK_Z:
inst.Src[0].Register.SwizzleZ = src0_swizzle;
inst.Src[1].Register.SwizzleZ = src1_swizzle;
inst.Src[2].Register.SwizzleZ = src2_swizzle;
break;
case TGSI_WRITEMASK_W:
inst.Src[0].Register.SwizzleW = src0_swizzle;
inst.Src[1].Register.SwizzleW = src1_swizzle;
inst.Src[2].Register.SwizzleW = src2_swizzle;
break;
default:
; /* nothing */
}
ctx->emit_instruction(ctx, &inst);
}
static INLINE void
tgsi_transform_kill_inst(struct tgsi_transform_context *ctx,
unsigned src_file,
unsigned src_index,
unsigned src_swizzle)
{
struct tgsi_full_instruction inst;
inst = tgsi_default_full_instruction();
inst.Instruction.Opcode = TGSI_OPCODE_KILL_IF;
inst.Instruction.NumDstRegs = 0;
inst.Instruction.NumSrcRegs = 1;
inst.Src[0].Register.File = src_file;
inst.Src[0].Register.Index = src_index;
inst.Src[0].Register.SwizzleX =
inst.Src[0].Register.SwizzleY =
inst.Src[0].Register.SwizzleZ =
inst.Src[0].Register.SwizzleW = src_swizzle;
inst.Src[0].Register.Negate = 1;
ctx->emit_instruction(ctx, &inst);
}
static INLINE void
tgsi_transform_tex_2d_inst(struct tgsi_transform_context *ctx,
unsigned dst_file,
unsigned dst_index,
unsigned src_file,
unsigned src_index,
unsigned sampler_index)
{
struct tgsi_full_instruction inst;
inst = tgsi_default_full_instruction();
inst.Instruction.Opcode = TGSI_OPCODE_TEX;
inst.Instruction.NumDstRegs = 1;
inst.Dst[0].Register.File = dst_file;
inst.Dst[0].Register.Index = dst_index;
inst.Instruction.NumSrcRegs = 2;
inst.Instruction.Texture = TRUE;
inst.Texture.Texture = TGSI_TEXTURE_2D;
inst.Src[0].Register.File = src_file;
inst.Src[0].Register.Index = src_index;
inst.Src[1].Register.File = TGSI_FILE_SAMPLER;
inst.Src[1].Register.Index = sampler_index;
ctx->emit_instruction(ctx, &inst);
}
extern int
tgsi_transform_shader(const struct tgsi_token *tokens_in,
struct tgsi_token *tokens_out,
uint max_tokens_out,
struct tgsi_transform_context *ctx);
#endif /* TGSI_TRANSFORM_H */
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