fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-03 16:28:08 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

comments

Browse source
This commit is contained in:
Brian 2007-07-24 14:45:57 -06:00
parent 8c99f7ba61
commit 6a235d3fe5
1 changed files with 22 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

27
src/mesa/pipe/tgsi/mesa/mesa_to_tgsi.c
View file

@ -31,22 +31,34 @@ map_register_file(
}
}
/*
/**
* Map mesa register file index to SBIR index.
* Take special care when processing input and output indices.
* \param processor either TGSI_PROCESSOR_FRAGMENT or TGSI_PROCESSOR_VERTEX
* \param file one of TGSI_FILE_x
* \param index the mesa register file index
* \param usage_bitmask ???
*/
static GLuint
map_register_file_index(
GLuint processor,
GLuint file,
GLuint index,
GLuint usage_bitmask )
GLbitfield usage_bitmask )
{
GLuint mapped_index;
GLuint i;
switch( file ) {
case TGSI_FILE_INPUT:
/*
* The fragment/vertex program input indexes (FRAG/VERT_ATTRIB_x) get
* mapped to a packed sequence of integers.
* If a program uses one input attribute, the mapped index will be 1.
* If a program uses two input attribs, the mapped indexes will be 1,2.
* If a program uses 3 input attribs, the mapped indexes will be 1,2,3.
* etc.
*/
assert( index < 32 );
assert( usage_bitmask & (1 << index) );
mapped_index = 0;
@ -55,11 +67,15 @@ map_register_file_index(
mapped_index++;
}
}
printf("Map input %d to %d\n", index, mapped_index);
break;
case TGSI_FILE_OUTPUT:
assert( usage_bitmask == 0 );
assert( usage_bitmask == 0x0 );
if( processor == TGSI_PROCESSOR_FRAGMENT ) {
/* depth result -> index 0
* color results -> index 1, 2, ...
*/
if( index == FRAG_RESULT_DEPR ) {
mapped_index = 0;
}
@ -69,6 +85,7 @@ map_register_file_index(
}
}
else {
/* mapped_index = VERT_RESULT_x */
mapped_index = index;
}
break;
@ -137,7 +154,7 @@ convert_writemask(
static GLboolean
compile_instruction(
struct prog_instruction *inst,
const struct prog_instruction *inst,
struct tgsi_full_instruction *fullinst,
GLuint inputs_read,
GLuint processor )
@ -158,7 +175,7 @@ compile_instruction(
processor,
fulldst->DstRegister.File,
inst->DstReg.Index,
0 );
0x0 );
fulldst->DstRegister.WriteMask = convert_writemask( inst->DstReg.WriteMask );
for( i = 0; i < fullinst->Instruction.NumSrcRegs; i++ ) {