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Generate DCLs for temporaries.

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This commit is contained in:
Brian 2007-10-09 16:28:01 -06:00
parent 578962d624
commit 11a46c61e0
1 changed files with 77 additions and 1 deletions
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78
src/mesa/pipe/tgsi/mesa/mesa_to_tgsi.c
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@ -498,6 +498,54 @@ make_output_decl(
}
static struct tgsi_full_declaration
make_temp_decl(GLuint index)
{
struct tgsi_full_declaration decl;
decl = tgsi_default_full_declaration();
decl.Declaration.File = TGSI_FILE_TEMPORARY;
decl.Declaration.Declare = TGSI_DECLARE_RANGE;
decl.u.DeclarationRange.First = index;
decl.u.DeclarationRange.Last = index;
return decl;
}
/**
* Find the temporaries which are used in the given program.
* Put the indices of the temporaries in 'tempsUsed'.
* \return number of temporaries used
*/
static GLuint
find_temporaries(const struct gl_program *program,
GLuint tempsUsed[MAX_PROGRAM_TEMPS])
{
GLuint i, j, count;
for (i = 0; i < MAX_PROGRAM_TEMPS; i++)
tempsUsed[i] = GL_FALSE;
for (i = 0; i < program->NumInstructions; i++) {
const struct prog_instruction *inst = program->Instructions + i;
const GLuint n = _mesa_num_inst_src_regs( inst->Opcode );
for (j = 0; j < n; j++) {
if (inst->SrcReg[j].File == PROGRAM_TEMPORARY)
tempsUsed[inst->SrcReg[j].Index] = GL_TRUE;
if (inst->DstReg.File == PROGRAM_TEMPORARY)
tempsUsed[inst->DstReg.Index] = GL_TRUE;
}
}
/* convert flags to list of indices */
count = 0;
for (i = 0; i < MAX_PROGRAM_TEMPS; i++) {
if (tempsUsed[i])
tempsUsed[count++] = i;
}
return count;
}
/**
* Convert Mesa fragment program to TGSI format.
* \param inputMapping maps Mesa fragment program inputs to TGSI generic
@ -527,7 +575,6 @@ tgsi_mesa_compile_fp_program(
GLuint ti; /* token index */
struct tgsi_header *header;
struct tgsi_processor *processor;
struct tgsi_full_declaration fulldecl;
struct tgsi_full_instruction fullinst;
GLuint preamble_size = 0;
@ -542,6 +589,7 @@ tgsi_mesa_compile_fp_program(
ti = 3;
for (i = 0; i < numInputs; i++) {
struct tgsi_full_declaration fulldecl;
switch (inputSemanticName[i]) {
case TGSI_SEMANTIC_POSITION:
/* Fragment XY pos */
@ -584,6 +632,7 @@ tgsi_mesa_compile_fp_program(
* Declare output attributes.
*/
for (i = 0; i < numOutputs; i++) {
struct tgsi_full_declaration fulldecl;
switch (outputSemanticName[i]) {
case TGSI_SEMANTIC_POSITION:
fulldecl = make_output_decl(i,
@ -610,6 +659,20 @@ tgsi_mesa_compile_fp_program(
}
}
{
GLuint tempsUsed[MAX_PROGRAM_TEMPS];
uint numTemps = find_temporaries(&program->Base, tempsUsed);
for (i = 0; i < numTemps; i++) {
struct tgsi_full_declaration fulldecl;
fulldecl = make_temp_decl(tempsUsed[i]);
ti += tgsi_build_full_declaration(
&fulldecl,
&tokens[ti],
header,
maxTokens - ti );
}
}
/*
* Copy fragment z if the shader does not write it.
*/
@ -714,6 +777,19 @@ tgsi_mesa_compile_vp_program(
maxTokens - ti );
}
{
GLuint tempsUsed[MAX_PROGRAM_TEMPS];
uint numTemps = find_temporaries(&program->Base, tempsUsed);
for (i = 0; i < numTemps; i++) {
struct tgsi_full_declaration fulldecl;
fulldecl = make_temp_decl(tempsUsed[i]);
ti += tgsi_build_full_declaration(
&fulldecl,
&tokens[ti],
header,
maxTokens - ti );
}
}
for( i = 0; i < program->Base.NumInstructions; i++ ) {
compile_instruction(