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path: root/src/mesa/shader/slang/slang_emit.c
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Diffstat (limited to 'src/mesa/shader/slang/slang_emit.c')
-rw-r--r--src/mesa/shader/slang/slang_emit.c202
1 files changed, 112 insertions, 90 deletions
diff --git a/src/mesa/shader/slang/slang_emit.c b/src/mesa/shader/slang/slang_emit.c
index 52627486bd..8e62817336 100644
--- a/src/mesa/shader/slang/slang_emit.c
+++ b/src/mesa/shader/slang/slang_emit.c
@@ -69,6 +69,7 @@ static slang_ir_info IrInfo[] = {
{ IR_POW, "IR_POW", OPCODE_POW, 1, 2 },
/* unary ops */
{ IR_I_TO_F, "IR_I_TO_F", OPCODE_NOP, 1, 1 },
+ { IR_F_TO_I, "IR_F_TO_I", OPCODE_INT, 4, 1 }, /* 4 floats to 4 ints */
{ IR_EXP, "IR_EXP", OPCODE_EXP, 1, 1 },
{ IR_EXP2, "IR_EXP2", OPCODE_EX2, 1, 1 },
{ IR_LOG2, "IR_LOG2", OPCODE_LG2, 1, 1 },
@@ -589,6 +590,104 @@ emit_tex(slang_var_table *vt, slang_ir_node *n, struct gl_program *prog)
static struct prog_instruction *
+emit_move(slang_var_table *vt, slang_ir_node *n, struct gl_program *prog)
+{
+ struct prog_instruction *inst;
+
+ /* rhs */
+ assert(n->Children[1]);
+ inst = emit(vt, n->Children[1], prog);
+
+ /* lhs */
+ emit(vt, n->Children[0], prog);
+
+#if 1
+ if (inst && _slang_is_temp(vt, n->Children[1]->Store->Index)) {
+ /* Peephole optimization:
+ * Just modify the RHS to put its result into the dest of this
+ * MOVE operation. Then, this MOVE is a no-op.
+ */
+ _slang_free_temp(vt, n->Children[1]->Store->Index,
+ n->Children[1]->Store->Size);
+ *n->Children[1]->Store = *n->Children[0]->Store;
+ /* fixup the prev (RHS) instruction */
+ storage_to_dst_reg(&inst->DstReg, n->Children[0]->Store, n->Writemask);
+ return inst;
+ }
+ else
+#endif
+ {
+ if (n->Children[0]->Store->Size > 4) {
+ /* move matrix/struct etc */
+ slang_ir_storage dstStore = *n->Children[0]->Store;
+ slang_ir_storage srcStore = *n->Children[1]->Store;
+ GLint size = srcStore.Size;
+ ASSERT(n->Children[0]->Writemask == WRITEMASK_XYZW);
+ ASSERT(n->Children[1]->Swizzle == SWIZZLE_NOOP);
+ dstStore.Size = 4;
+ srcStore.Size = 4;
+ while (size >= 4) {
+ inst = new_instruction(prog, OPCODE_MOV);
+ inst->Comment = _mesa_strdup("IR_MOVE block");
+ storage_to_dst_reg(&inst->DstReg, &dstStore, n->Writemask);
+ storage_to_src_reg(&inst->SrcReg[0], &srcStore,
+ n->Children[1]->Swizzle);
+ srcStore.Index++;
+ dstStore.Index++;
+ size -= 4;
+ }
+ }
+ else {
+ inst = new_instruction(prog, OPCODE_MOV);
+ storage_to_dst_reg(&inst->DstReg, n->Children[0]->Store, n->Writemask);
+ storage_to_src_reg(&inst->SrcReg[0], n->Children[1]->Store,
+ n->Children[1]->Swizzle);
+ }
+ /* XXX is this test correct? */
+ if (_slang_is_temp(vt, n->Children[1]->Store->Index)) {
+ _slang_free_temp(vt, n->Children[1]->Store->Index,
+ n->Children[1]->Store->Size);
+ }
+ /*inst->Comment = _mesa_strdup("IR_MOVE");*/
+ assert(!n->Store);
+ n->Store = n->Children[0]->Store; /*XXX new */
+ return inst;
+ }
+}
+
+
+static struct prog_instruction *
+emit_cond(slang_var_table *vt, slang_ir_node *n, struct gl_program *prog)
+{
+ /* Conditional expression (in if/while/for stmts).
+ * Need to update condition code register.
+ * Next instruction is typically an IR_CJUMP.
+ */
+ /* last child expr instruction: */
+ struct prog_instruction *inst = emit(vt, n->Children[0], prog);
+ if (inst) {
+ /* set inst's CondUpdate flag */
+ inst->CondUpdate = GL_TRUE;
+ return inst; /* XXX or null? */
+ }
+ else {
+ /* This'll happen for things like "if (i) ..." where no code
+ * is normally generated for the expression "i".
+ * Generate a move instruction just to set condition codes.
+ */
+ alloc_temp_storage(vt, n, 1);
+ inst = new_instruction(prog, OPCODE_MOV);
+ inst->CondUpdate = GL_TRUE;
+ storage_to_dst_reg(&inst->DstReg, n->Store, n->Writemask);
+ storage_to_src_reg(&inst->SrcReg[0], n->Children[0]->Store,
+ n->Children[0]->Swizzle);
+ _slang_free_temp(vt, n->Store->Index, n->Store->Size);
+ return inst; /* XXX or null? */
+ }
+}
+
+
+static struct prog_instruction *
emit(slang_var_table *vt, slang_ir_node *n, struct gl_program *prog)
{
struct prog_instruction *inst;
@@ -597,6 +696,7 @@ emit(slang_var_table *vt, slang_ir_node *n, struct gl_program *prog)
switch (n->Opcode) {
case IR_SEQ:
+ /* sequence of two sub-trees */
assert(n->Children[0]);
assert(n->Children[1]);
emit(vt, n->Children[0], prog);
@@ -662,66 +762,7 @@ emit(slang_var_table *vt, slang_ir_node *n, struct gl_program *prog)
}
return NULL; /* no instruction */
- case IR_MOVE:
- /* rhs */
- assert(n->Children[1]);
- inst = emit(vt, n->Children[1], prog);
- /* lhs */
- emit(vt, n->Children[0], prog);
-
-#if 1
- if (inst && _slang_is_temp(vt, n->Children[1]->Store->Index)) {
- /* Peephole optimization:
- * Just modify the RHS to put its result into the dest of this
- * MOVE operation. Then, this MOVE is a no-op.
- */
- _slang_free_temp(vt, n->Children[1]->Store->Index,
- n->Children[1]->Store->Size);
- *n->Children[1]->Store = *n->Children[0]->Store;
- /* fixup the prev (RHS) instruction */
- storage_to_dst_reg(&inst->DstReg, n->Children[0]->Store, n->Writemask);
- return inst;
- }
- else
-#endif
- {
- if (n->Children[0]->Store->Size > 4) {
- /* move matrix/struct etc */
- slang_ir_storage dstStore = *n->Children[0]->Store;
- slang_ir_storage srcStore = *n->Children[1]->Store;
- GLint size = srcStore.Size;
- ASSERT(n->Children[0]->Writemask == WRITEMASK_XYZW);
- ASSERT(n->Children[1]->Swizzle == SWIZZLE_NOOP);
- dstStore.Size = 4;
- srcStore.Size = 4;
- while (size >= 4) {
- inst = new_instruction(prog, OPCODE_MOV);
- inst->Comment = _mesa_strdup("IR_MOVE block");
- storage_to_dst_reg(&inst->DstReg, &dstStore, n->Writemask);
- storage_to_src_reg(&inst->SrcReg[0], &srcStore,
- n->Children[1]->Swizzle);
- srcStore.Index++;
- dstStore.Index++;
- size -= 4;
- }
- }
- else {
- inst = new_instruction(prog, OPCODE_MOV);
- storage_to_dst_reg(&inst->DstReg, n->Children[0]->Store, n->Writemask);
- storage_to_src_reg(&inst->SrcReg[0], n->Children[1]->Store,
- n->Children[1]->Swizzle);
- }
- /* XXX is this test correct? */
- if (_slang_is_temp(vt, n->Children[1]->Store->Index)) {
- _slang_free_temp(vt, n->Children[1]->Store->Index,
- n->Children[1]->Store->Size);
- }
- /*inst->Comment = _mesa_strdup("IR_MOVE");*/
- assert(!n->Store);
- n->Store = n->Children[0]->Store; /*XXX new */
- return inst;
- }
- break;
+ /* Simple binary operators */
case IR_ADD:
case IR_SUB:
case IR_MUL:
@@ -738,10 +779,12 @@ emit(slang_var_table *vt, slang_ir_node *n, struct gl_program *prog)
case IR_EXP:
case IR_EXP2:
return emit_binop(vt, n, prog);
+ /* Simple unary operators */
case IR_RSQ:
case IR_RCP:
case IR_FLOOR:
case IR_FRAC:
+ case IR_F_TO_I:
case IR_ABS:
case IR_SIN:
case IR_COS:
@@ -754,44 +797,23 @@ emit(slang_var_table *vt, slang_ir_node *n, struct gl_program *prog)
return emit_tex(vt, n, prog);
case IR_NEG:
return emit_negation(vt, n, prog);
- case IR_LABEL:
- return emit_label(n->Target, prog);
case IR_FLOAT:
n->Store = alloc_constant(n->Value, 4, prog); /*XXX fix size */
break;
+
+ case IR_MOVE:
+ return emit_move(vt, n, prog);
+
case IR_COND:
- {
- /* Conditional expression (in if/while/for stmts).
- * Need to update condition code register.
- * Next instruction is typically an IR_CJUMP.
- */
- /* last child expr instruction: */
- struct prog_instruction *inst = emit(vt, n->Children[0], prog);
- if (inst) {
- /* set inst's CondUpdate flag */
- inst->CondUpdate = GL_TRUE;
- return inst; /* XXX or null? */
- }
- else {
- /* This'll happen for things like "if (i) ..." where no code
- * is normally generated for the expression "i".
- * Generate a move instruction just to set condition codes.
- */
- alloc_temp_storage(vt, n, 1);
- inst = new_instruction(prog, OPCODE_MOV);
- inst->CondUpdate = GL_TRUE;
- storage_to_dst_reg(&inst->DstReg, n->Store, n->Writemask);
- storage_to_src_reg(&inst->SrcReg[0], n->Children[0]->Store,
- n->Children[0]->Swizzle);
- _slang_free_temp(vt, n->Store->Index, n->Store->Size);
- return inst; /* XXX or null? */
- }
- }
- return NULL;
+ return emit_cond(vt, n, prog);
+
+ case IR_LABEL:
+ return emit_label(n->Target, prog);
case IR_JUMP:
return emit_jump(n->Target, prog);
case IR_CJUMP:
return emit_cjump(n->Target, prog);
+
default:
_mesa_problem(NULL, "Unexpected IR opcode in emit()\n");
abort();
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 21:32:08 +0000