forked from KolibriOS/kolibrios
308 lines
7.7 KiB
C
308 lines
7.7 KiB
C
/**************************************************************************
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*
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* Copyright 2007 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 "util/u_debug.h"
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#include "pipe/p_shader_tokens.h"
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#include "tgsi_parse.h"
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#include "util/u_memory.h"
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unsigned
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tgsi_parse_init(
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struct tgsi_parse_context *ctx,
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const struct tgsi_token *tokens )
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{
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ctx->FullHeader.Header = *(struct tgsi_header *) &tokens[0];
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if( ctx->FullHeader.Header.HeaderSize >= 2 ) {
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ctx->FullHeader.Processor = *(struct tgsi_processor *) &tokens[1];
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}
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else {
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return TGSI_PARSE_ERROR;
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}
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ctx->Tokens = tokens;
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ctx->Position = ctx->FullHeader.Header.HeaderSize;
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return TGSI_PARSE_OK;
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}
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void
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tgsi_parse_free(
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struct tgsi_parse_context *ctx )
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{
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}
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boolean
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tgsi_parse_end_of_tokens(
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struct tgsi_parse_context *ctx )
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{
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return ctx->Position >=
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ctx->FullHeader.Header.HeaderSize + ctx->FullHeader.Header.BodySize;
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}
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/**
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* This function is used to avoid and work-around type punning/aliasing
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* warnings. The warnings seem harmless on x86 but on PPC they cause
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* real failures.
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*/
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static INLINE void
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copy_token(void *dst, const void *src)
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{
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memcpy(dst, src, 4);
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}
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/**
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* Get next 4-byte token, return it at address specified by 'token'
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*/
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static void
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next_token(
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struct tgsi_parse_context *ctx,
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void *token )
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{
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assert( !tgsi_parse_end_of_tokens( ctx ) );
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copy_token(token, &ctx->Tokens[ctx->Position]);
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ctx->Position++;
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}
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void
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tgsi_parse_token(
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struct tgsi_parse_context *ctx )
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{
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struct tgsi_token token;
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unsigned i;
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next_token( ctx, &token );
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switch( token.Type ) {
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case TGSI_TOKEN_TYPE_DECLARATION:
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{
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struct tgsi_full_declaration *decl = &ctx->FullToken.FullDeclaration;
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memset(decl, 0, sizeof *decl);
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copy_token(&decl->Declaration, &token);
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next_token( ctx, &decl->Range );
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if (decl->Declaration.Dimension) {
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next_token(ctx, &decl->Dim);
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}
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if( decl->Declaration.Interpolate ) {
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next_token( ctx, &decl->Interp );
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}
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if( decl->Declaration.Semantic ) {
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next_token( ctx, &decl->Semantic );
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}
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if (decl->Declaration.File == TGSI_FILE_RESOURCE) {
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next_token(ctx, &decl->Resource);
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}
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if (decl->Declaration.File == TGSI_FILE_SAMPLER_VIEW) {
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next_token(ctx, &decl->SamplerView);
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}
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if( decl->Declaration.Array ) {
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next_token(ctx, &decl->Array);
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}
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break;
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}
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case TGSI_TOKEN_TYPE_IMMEDIATE:
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{
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struct tgsi_full_immediate *imm = &ctx->FullToken.FullImmediate;
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uint imm_count;
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memset(imm, 0, sizeof *imm);
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copy_token(&imm->Immediate, &token);
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imm_count = imm->Immediate.NrTokens - 1;
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switch (imm->Immediate.DataType) {
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case TGSI_IMM_FLOAT32:
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for (i = 0; i < imm_count; i++) {
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next_token(ctx, &imm->u[i].Float);
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}
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break;
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case TGSI_IMM_UINT32:
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for (i = 0; i < imm_count; i++) {
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next_token(ctx, &imm->u[i].Uint);
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}
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break;
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case TGSI_IMM_INT32:
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for (i = 0; i < imm_count; i++) {
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next_token(ctx, &imm->u[i].Int);
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}
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break;
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default:
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assert( 0 );
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}
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break;
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}
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case TGSI_TOKEN_TYPE_INSTRUCTION:
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{
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struct tgsi_full_instruction *inst = &ctx->FullToken.FullInstruction;
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memset(inst, 0, sizeof *inst);
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copy_token(&inst->Instruction, &token);
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if (inst->Instruction.Predicate) {
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next_token(ctx, &inst->Predicate);
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}
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if (inst->Instruction.Label) {
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next_token( ctx, &inst->Label);
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}
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if (inst->Instruction.Texture) {
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next_token( ctx, &inst->Texture);
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for( i = 0; i < inst->Texture.NumOffsets; i++ ) {
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next_token( ctx, &inst->TexOffsets[i] );
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}
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}
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assert( inst->Instruction.NumDstRegs <= TGSI_FULL_MAX_DST_REGISTERS );
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for( i = 0; i < inst->Instruction.NumDstRegs; i++ ) {
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next_token( ctx, &inst->Dst[i].Register );
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if( inst->Dst[i].Register.Indirect )
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next_token( ctx, &inst->Dst[i].Indirect );
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if( inst->Dst[i].Register.Dimension ) {
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next_token( ctx, &inst->Dst[i].Dimension );
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/*
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* No support for multi-dimensional addressing.
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*/
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assert( !inst->Dst[i].Dimension.Dimension );
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if( inst->Dst[i].Dimension.Indirect )
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next_token( ctx, &inst->Dst[i].DimIndirect );
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}
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}
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assert( inst->Instruction.NumSrcRegs <= TGSI_FULL_MAX_SRC_REGISTERS );
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for( i = 0; i < inst->Instruction.NumSrcRegs; i++ ) {
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next_token( ctx, &inst->Src[i].Register );
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if( inst->Src[i].Register.Indirect )
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next_token( ctx, &inst->Src[i].Indirect );
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if( inst->Src[i].Register.Dimension ) {
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next_token( ctx, &inst->Src[i].Dimension );
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/*
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* No support for multi-dimensional addressing.
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*/
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assert( !inst->Src[i].Dimension.Dimension );
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if( inst->Src[i].Dimension.Indirect )
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next_token( ctx, &inst->Src[i].DimIndirect );
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}
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}
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break;
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}
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case TGSI_TOKEN_TYPE_PROPERTY:
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{
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struct tgsi_full_property *prop = &ctx->FullToken.FullProperty;
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uint prop_count;
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memset(prop, 0, sizeof *prop);
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copy_token(&prop->Property, &token);
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prop_count = prop->Property.NrTokens - 1;
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for (i = 0; i < prop_count; i++) {
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next_token(ctx, &prop->u[i]);
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}
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break;
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}
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default:
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assert( 0 );
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}
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}
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/**
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* Make a new copy of a token array.
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*/
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struct tgsi_token *
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tgsi_dup_tokens(const struct tgsi_token *tokens)
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{
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unsigned n = tgsi_num_tokens(tokens);
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unsigned bytes = n * sizeof(struct tgsi_token);
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struct tgsi_token *new_tokens = (struct tgsi_token *) MALLOC(bytes);
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if (new_tokens)
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memcpy(new_tokens, tokens, bytes);
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return new_tokens;
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}
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/**
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* Allocate memory for num_tokens tokens.
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*/
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struct tgsi_token *
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tgsi_alloc_tokens(unsigned num_tokens)
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{
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unsigned bytes = num_tokens * sizeof(struct tgsi_token);
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return (struct tgsi_token *) MALLOC(bytes);
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}
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void
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tgsi_dump_tokens(const struct tgsi_token *tokens)
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{
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const unsigned *dwords = (const unsigned *)tokens;
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int nr = tgsi_num_tokens(tokens);
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int i;
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assert(sizeof(*tokens) == sizeof(unsigned));
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debug_printf("const unsigned tokens[%d] = {\n", nr);
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for (i = 0; i < nr; i++)
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debug_printf("0x%08x,\n", dwords[i]);
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debug_printf("};\n");
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}
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