summaryrefslogtreecommitdiff
path: root/src/mesa
diff options
context:
space:
mode:
authorBrian Paul <brian.paul@tungstengraphics.com>2008-05-18 15:46:26 -0600
committerBrian Paul <brian.paul@tungstengraphics.com>2008-05-18 15:46:26 -0600
commit0c78c766e4cb8ffcda44cabfadb8de8e09121034 (patch)
treec257fa1467b495b75e84b5487382cd06f755f319 /src/mesa
parent5976a6a75cfa6749db306111a601d99c99cc00a4 (diff)
fixes to _mesa_combine_programs(), from gallium-0.1
Diffstat (limited to 'src/mesa')
-rw-r--r--src/mesa/shader/program.c49
-rw-r--r--src/mesa/shader/program.h3
2 files changed, 46 insertions, 6 deletions
diff --git a/src/mesa/shader/program.c b/src/mesa/shader/program.c
index adc7000995..044d6449ac 100644
--- a/src/mesa/shader/program.c
+++ b/src/mesa/shader/program.c
@@ -214,11 +214,17 @@ _mesa_init_program_struct( GLcontext *ctx, struct gl_program *prog,
{
(void) ctx;
if (prog) {
+ GLuint i;
+ _mesa_bzero(prog, sizeof(*prog));
prog->Id = id;
prog->Target = target;
prog->Resident = GL_TRUE;
prog->RefCount = 1;
prog->Format = GL_PROGRAM_FORMAT_ASCII_ARB;
+
+ /* default mapping from samplers to texture units */
+ for (i = 0; i < MAX_SAMPLERS; i++)
+ prog->SamplerUnits[i] = i;
}
return prog;
@@ -430,6 +436,7 @@ _mesa_clone_program(GLcontext *ctx, const struct gl_program *prog)
prog->NumInstructions);
clone->InputsRead = prog->InputsRead;
clone->OutputsWritten = prog->OutputsWritten;
+ clone->SamplersUsed = prog->SamplersUsed;
memcpy(clone->TexturesUsed, prog->TexturesUsed, sizeof(prog->TexturesUsed));
if (prog->Parameters)
@@ -544,6 +551,7 @@ replace_registers(struct prog_instruction *inst, GLuint numInst,
{
GLuint i, j;
for (i = 0; i < numInst; i++) {
+ /* src regs */
for (j = 0; j < _mesa_num_inst_src_regs(inst->Opcode); j++) {
if (inst[i].SrcReg[j].File == oldFile &&
inst[i].SrcReg[j].Index == oldIndex) {
@@ -551,6 +559,11 @@ replace_registers(struct prog_instruction *inst, GLuint numInst,
inst[i].SrcReg[j].Index = newIndex;
}
}
+ /* dst reg */
+ if (inst[i].DstReg.File == oldFile && inst[i].DstReg.Index == oldIndex) {
+ inst[i].DstReg.File = newFile;
+ inst[i].DstReg.Index = newIndex;
+ }
}
}
@@ -584,7 +597,8 @@ adjust_param_indexes(struct prog_instruction *inst, GLuint numInst,
*/
struct gl_program *
_mesa_combine_programs(GLcontext *ctx,
- struct gl_program *progA, struct gl_program *progB)
+ const struct gl_program *progA,
+ const struct gl_program *progB)
{
struct prog_instruction *newInst;
struct gl_program *newProg;
@@ -592,6 +606,7 @@ _mesa_combine_programs(GLcontext *ctx,
const GLuint lenB = progB->NumInstructions;
const GLuint numParamsA = _mesa_num_parameters(progA->Parameters);
const GLuint newLength = lenA + lenB;
+ GLbitfield inputsB;
GLuint i;
ASSERT(progA->Target == progB->Target);
@@ -613,17 +628,41 @@ _mesa_combine_programs(GLcontext *ctx,
newProg->NumInstructions = newLength;
if (newProg->Target == GL_FRAGMENT_PROGRAM_ARB) {
- /* connect color outputs/inputs */
+ struct gl_fragment_program *fprogA, *fprogB, *newFprog;
+ fprogA = (struct gl_fragment_program *) progA;
+ fprogB = (struct gl_fragment_program *) progB;
+ newFprog = (struct gl_fragment_program *) newProg;
+
+ newFprog->UsesKill = fprogA->UsesKill || fprogB->UsesKill;
+
+ /* Connect color outputs of fprogA to color inputs of fprogB, via a
+ * new temporary register.
+ */
if ((progA->OutputsWritten & (1 << FRAG_RESULT_COLR)) &&
(progB->InputsRead & (1 << FRAG_ATTRIB_COL0))) {
+ GLint tempReg = _mesa_find_free_register(newProg, PROGRAM_TEMPORARY);
+ if (!tempReg) {
+ _mesa_problem(ctx, "No free temp regs found in "
+ "_mesa_combine_programs(), using 31");
+ tempReg = 31;
+ }
+ /* replace writes to result.color[0] with tempReg */
+ replace_registers(newInst, lenA,
+ PROGRAM_OUTPUT, FRAG_RESULT_COLR,
+ PROGRAM_TEMPORARY, tempReg);
+ /* replace reads from input.color[0] with tempReg */
replace_registers(newInst + lenA, lenB,
PROGRAM_INPUT, FRAG_ATTRIB_COL0,
- PROGRAM_OUTPUT, FRAG_RESULT_COLR);
+ PROGRAM_TEMPORARY, tempReg);
}
- newProg->InputsRead = progA->InputsRead;
- newProg->InputsRead |= (progB->InputsRead & ~(1 << FRAG_ATTRIB_COL0));
+ inputsB = progB->InputsRead;
+ if (progA->OutputsWritten & (1 << FRAG_RESULT_COLR)) {
+ inputsB &= ~(1 << FRAG_ATTRIB_COL0);
+ }
+ newProg->InputsRead = progA->InputsRead | inputsB;
newProg->OutputsWritten = progB->OutputsWritten;
+ newProg->SamplersUsed = progA->SamplersUsed | progB->SamplersUsed;
}
else {
/* vertex program */
diff --git a/src/mesa/shader/program.h b/src/mesa/shader/program.h
index 0f0d6060a9..f1a69a2c01 100644
--- a/src/mesa/shader/program.h
+++ b/src/mesa/shader/program.h
@@ -117,7 +117,8 @@ _mesa_insert_instructions(struct gl_program *prog, GLuint start, GLuint count);
extern struct gl_program *
_mesa_combine_programs(GLcontext *ctx,
- struct gl_program *progA, struct gl_program *progB);
+ const struct gl_program *progA,
+ const struct gl_program *progB);
extern GLint
_mesa_find_free_register(const struct gl_program *prog, GLuint regFile);