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Diffstat (limited to 'src/mesa/swrast/s_fragprog.c')
-rw-r--r--src/mesa/swrast/s_fragprog.c150
1 files changed, 61 insertions, 89 deletions
diff --git a/src/mesa/swrast/s_fragprog.c b/src/mesa/swrast/s_fragprog.c
index 12c8aee6ea0..89907f73c60 100644
--- a/src/mesa/swrast/s_fragprog.c
+++ b/src/mesa/swrast/s_fragprog.c
@@ -418,6 +418,29 @@ test_cc(GLuint condCode, GLuint ccMaskRule)
/**
+ * Evaluate the 4 condition codes against a predicate and return GL_TRUE
+ * or GL_FALSE to indicate result.
+ */
+static INLINE GLboolean
+eval_condition(const struct fp_machine *machine,
+ const struct prog_instruction *inst)
+{
+ const GLuint swizzle = inst->DstReg.CondSwizzle;
+ const GLuint condMask = inst->DstReg.CondMask;
+ if (test_cc(machine->CondCodes[GET_SWZ(swizzle, 0)], condMask) ||
+ test_cc(machine->CondCodes[GET_SWZ(swizzle, 1)], condMask) ||
+ test_cc(machine->CondCodes[GET_SWZ(swizzle, 2)], condMask) ||
+ test_cc(machine->CondCodes[GET_SWZ(swizzle, 3)], condMask)) {
+ return GL_TRUE;
+ }
+ else {
+ return GL_FALSE;
+ }
+}
+
+
+
+/**
* Store 4 floats into a register. Observe the instructions saturate and
* set-condition-code flags.
*/
@@ -531,6 +554,7 @@ init_machine_deriv( GLcontext *ctx,
_mesa_memcpy(dMachine, machine, sizeof(struct fp_machine));
if (program->Base.Target == GL_FRAGMENT_PROGRAM_NV) {
+ /* XXX also need to do this when using valgrind */
/* Clear temporary registers (undefined for ARB_f_p) */
_mesa_bzero( (void*) machine->Temporaries,
MAX_NV_FRAGMENT_PROGRAM_TEMPS * 4 * sizeof(GLfloat));
@@ -642,7 +666,7 @@ execute_program( GLcontext *ctx,
}
if (DEBUG_FRAG) {
- _mesa_print_instruction(inst, 0);
+ _mesa_print_instruction(inst);
}
switch (inst->Opcode) {
@@ -675,9 +699,10 @@ execute_program( GLcontext *ctx,
}
}
break;
- case OPCODE_BGNLOOP: /* begin loop */
+ case OPCODE_BGNLOOP:
+ /* no-op */
break;
- case OPCODE_ENDLOOP: /* end loop */
+ case OPCODE_ENDLOOP:
/* subtract 1 here since pc is incremented by for(pc) loop */
pc = inst->BranchTarget - 1; /* go to matching BNGLOOP */
break;
@@ -685,52 +710,25 @@ execute_program( GLcontext *ctx,
break;
case OPCODE_ENDSUB: /* end subroutine */
break;
- case OPCODE_BRA: /* conditional branch */
- {
- /* NOTE: The branch is conditional! */
- const GLuint swizzle = inst->DstReg.CondSwizzle;
- const GLuint condMask = inst->DstReg.CondMask;
- if (test_cc(machine->CondCodes[GET_SWZ(swizzle, 0)], condMask) ||
- test_cc(machine->CondCodes[GET_SWZ(swizzle, 1)], condMask) ||
- test_cc(machine->CondCodes[GET_SWZ(swizzle, 2)], condMask) ||
- test_cc(machine->CondCodes[GET_SWZ(swizzle, 3)], condMask)) {
- /* take branch */
- pc = inst->BranchTarget;
- /*
- printf("Take branch to %u\n", pc);
- */
- }
- }
- break;
- case OPCODE_BRK: /* break out of loop */
- {
- /* The location of the ENDLOOP instruction is saved in the
- * BGNLOOP instruction. Get that instruction and jump to
- * its BranchTarget + 1.
- */
- const struct prog_instruction *loopBeginInst
- = program->Base.Instructions + inst->BranchTarget;
- ASSERT(loopBeginInst->Opcode == OPCODE_BGNLOOP);
- ASSERT(loopBeginInst->BranchTarget >= 0);
- /* we'll add one at bottom of for-loop */
- pc = loopBeginInst->BranchTarget;
+ case OPCODE_BRA: /* branch (conditional) */
+ /* fall-through */
+ case OPCODE_BRK: /* break out of loop (conditional) */
+ /* fall-through */
+ case OPCODE_CONT: /* continue loop (conditional) */
+ if (eval_condition(machine, inst)) {
+ /* take branch */
+ /* Subtract 1 here since we'll do pc++ at end of for-loop */
+ pc = inst->BranchTarget - 1;
}
break;
- case OPCODE_CAL: /* Call subroutine */
- {
- /* NOTE: The call is conditional! */
- const GLuint swizzle = inst->DstReg.CondSwizzle;
- const GLuint condMask = inst->DstReg.CondMask;
- if (test_cc(machine->CondCodes[GET_SWZ(swizzle, 0)], condMask) ||
- test_cc(machine->CondCodes[GET_SWZ(swizzle, 1)], condMask) ||
- test_cc(machine->CondCodes[GET_SWZ(swizzle, 2)], condMask) ||
- test_cc(machine->CondCodes[GET_SWZ(swizzle, 3)], condMask)) {
- if (machine->StackDepth >= MAX_PROGRAM_CALL_DEPTH) {
- return GL_TRUE; /* Per GL_NV_vertex_program2 spec */
- }
- machine->CallStack[machine->StackDepth++] = pc + 1;
- pc = inst->BranchTarget;
+ case OPCODE_CAL: /* Call subroutine (conditional) */
+ if (eval_condition(machine, inst)) {
+ /* call the subroutine */
+ if (machine->StackDepth >= MAX_PROGRAM_CALL_DEPTH) {
+ return GL_TRUE; /* Per GL_NV_vertex_program2 spec */
}
+ machine->CallStack[machine->StackDepth++] = pc + 1;
+ pc = inst->BranchTarget; /* XXX - 1 ??? */
}
break;
case OPCODE_CMP:
@@ -746,8 +744,6 @@ execute_program( GLcontext *ctx,
store_vector4( inst, machine, result );
}
break;
- case OPCODE_CONT: /* continue loop */
- break;
case OPCODE_COS:
{
GLfloat a[4], result[4];
@@ -883,29 +879,20 @@ execute_program( GLcontext *ctx,
}
break;
case OPCODE_IF:
- {
- const GLuint swizzle = inst->DstReg.CondSwizzle;
- const GLuint condMask = inst->DstReg.CondMask;
- if (test_cc(machine->CondCodes[GET_SWZ(swizzle, 0)], condMask) ||
- test_cc(machine->CondCodes[GET_SWZ(swizzle, 1)], condMask) ||
- test_cc(machine->CondCodes[GET_SWZ(swizzle, 2)], condMask) ||
- test_cc(machine->CondCodes[GET_SWZ(swizzle, 3)], condMask)) {
- /* do if-clause (just continue execution) */
- }
- else {
- /* go to the instruction after ELSE or ENDIF */
- assert(inst->BranchTarget >= 0);
- pc = inst->BranchTarget - 1;
- }
+ if (eval_condition(machine, inst)) {
+ /* do if-clause (just continue execution) */
}
- break;
- case OPCODE_ELSE:
- {
- /* goto ENDIF */
+ else {
+ /* go to the instruction after ELSE or ENDIF */
assert(inst->BranchTarget >= 0);
pc = inst->BranchTarget - 1;
}
break;
+ case OPCODE_ELSE:
+ /* goto ENDIF */
+ assert(inst->BranchTarget >= 0);
+ pc = inst->BranchTarget - 1;
+ break;
case OPCODE_ENDIF:
/* nothing */
break;
@@ -920,16 +907,9 @@ execute_program( GLcontext *ctx,
store_vector4( inst, machine, result );
}
break;
- case OPCODE_KIL_NV: /* NV_f_p only */
- {
- const GLuint swizzle = inst->DstReg.CondSwizzle;
- const GLuint condMask = inst->DstReg.CondMask;
- if (test_cc(machine->CondCodes[GET_SWZ(swizzle, 0)], condMask) ||
- test_cc(machine->CondCodes[GET_SWZ(swizzle, 1)], condMask) ||
- test_cc(machine->CondCodes[GET_SWZ(swizzle, 2)], condMask) ||
- test_cc(machine->CondCodes[GET_SWZ(swizzle, 3)], condMask)) {
- return GL_FALSE;
- }
+ case OPCODE_KIL_NV: /* NV_f_p only (conditional) */
+ if (eval_condition(machine, inst)) {
+ return GL_FALSE;
}
break;
case OPCODE_KIL: /* ARB_f_p only */
@@ -1215,20 +1195,12 @@ execute_program( GLcontext *ctx,
store_vector4( inst, machine, result );
}
break;
- case OPCODE_RET: /* return from subroutine */
- {
- /* NOTE: The return is conditional! */
- const GLuint swizzle = inst->DstReg.CondSwizzle;
- const GLuint condMask = inst->DstReg.CondMask;
- if (test_cc(machine->CondCodes[GET_SWZ(swizzle, 0)], condMask) ||
- test_cc(machine->CondCodes[GET_SWZ(swizzle, 1)], condMask) ||
- test_cc(machine->CondCodes[GET_SWZ(swizzle, 2)], condMask) ||
- test_cc(machine->CondCodes[GET_SWZ(swizzle, 3)], condMask)) {
- if (machine->StackDepth == 0) {
- return GL_TRUE; /* Per GL_NV_vertex_program2 spec */
- }
- pc = machine->CallStack[--machine->StackDepth];
+ case OPCODE_RET: /* return from subroutine (conditional) */
+ if (eval_condition(machine, inst)) {
+ if (machine->StackDepth == 0) {
+ return GL_TRUE; /* Per GL_NV_vertex_program2 spec */
}
+ pc = machine->CallStack[--machine->StackDepth];
}
break;
case OPCODE_RFL: /* reflection vector */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 12:53:12 +0000