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authorBrian Paul <brianp@vmware.com>2010-12-08 18:19:14 -0700
committerBrian Paul <brianp@vmware.com>2010-12-08 18:19:14 -0700
commit859f45a92197f310186924c47ef7b7d1c2bd7ec8 (patch)
treee3f8ff131435b171e57b08b5a3e49b95aca51152 /src/gallium/auxiliary/tgsi
parent9cd277684db5a266b451a719a963556664838d6e (diff)
tgsi: add support for system values to TGSI interpreter
Diffstat (limited to 'src/gallium/auxiliary/tgsi')
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_exec.c19
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_exec.h7
2 files changed, 23 insertions, 3 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index 7892a67f04..35b2742351 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -1038,7 +1038,6 @@ fetch_src_file_channel(const struct tgsi_exec_machine *mach,
break;
case TGSI_FILE_INPUT:
- case TGSI_FILE_SYSTEM_VALUE:
for (i = 0; i < QUAD_SIZE; i++) {
/*
if (TGSI_PROCESSOR_GEOMETRY == mach->Processor) {
@@ -1053,6 +1052,15 @@ fetch_src_file_channel(const struct tgsi_exec_machine *mach,
}
break;
+ case TGSI_FILE_SYSTEM_VALUE:
+ /* XXX no swizzling at this point. Will be needed if we put
+ * gl_FragCoord, for example, in a sys value register.
+ */
+ for (i = 0; i < QUAD_SIZE; i++) {
+ chan->f[i] = mach->SystemValue[index->i[i]][0];
+ }
+ break;
+
case TGSI_FILE_TEMPORARY:
for (i = 0; i < QUAD_SIZE; i++) {
assert(index->i[i] < TGSI_EXEC_NUM_TEMPS);
@@ -1907,8 +1915,7 @@ exec_declaration(struct tgsi_exec_machine *mach,
const struct tgsi_full_declaration *decl)
{
if (mach->Processor == TGSI_PROCESSOR_FRAGMENT) {
- if (decl->Declaration.File == TGSI_FILE_INPUT ||
- decl->Declaration.File == TGSI_FILE_SYSTEM_VALUE) {
+ if (decl->Declaration.File == TGSI_FILE_INPUT) {
uint first, last, mask;
first = decl->Range.First;
@@ -1921,6 +1928,7 @@ exec_declaration(struct tgsi_exec_machine *mach,
* ureg code to emit the right UsageMask value (WRITEMASK_X).
* Then, we could remove the tgsi_exec_machine::Face field.
*/
+ /* XXX make FACE a system value */
if (decl->Semantic.Name == TGSI_SEMANTIC_FACE) {
uint i;
@@ -1962,8 +1970,13 @@ exec_declaration(struct tgsi_exec_machine *mach,
}
}
}
+
+ if (decl->Declaration.File == TGSI_FILE_SYSTEM_VALUE) {
+ mach->SysSemanticToIndex[decl->Declaration.Semantic] = decl->Range.First;
+ }
}
+
typedef void (* micro_op)(union tgsi_exec_channel *dst);
static void
diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.h b/src/gallium/auxiliary/tgsi/tgsi_exec.h
index b5ebbfbfaa..6c204c7371 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.h
@@ -31,6 +31,7 @@
#include "pipe/p_compiler.h"
#include "pipe/p_state.h"
+#include "pipe/p_shader_tokens.h"
#if defined __cplusplus
extern "C" {
@@ -181,6 +182,8 @@ struct tgsi_sampler
/* The maximum total number of vertices */
#define TGSI_MAX_TOTAL_VERTICES (TGSI_MAX_PRIM_VERTICES * TGSI_MAX_PRIMITIVES * PIPE_MAX_ATTRIBS)
+#define TGSI_MAX_MISC_INPUTS 8
+
/** function call/activation record */
struct tgsi_call_record
{
@@ -228,6 +231,10 @@ struct tgsi_exec_machine
struct tgsi_exec_vector Inputs[TGSI_MAX_PRIM_VERTICES * PIPE_MAX_ATTRIBS];
struct tgsi_exec_vector Outputs[TGSI_MAX_TOTAL_VERTICES];
+ /* System values */
+ unsigned SysSemanticToIndex[TGSI_SEMANTIC_COUNT];
+ float SystemValue[TGSI_MAX_MISC_INPUTS][4];
+
struct tgsi_exec_vector *Addrs;
struct tgsi_exec_vector *Predicates;