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Diffstat (limited to 'src/mesa/shader/slang/slang_vartable.c')
-rw-r--r--src/mesa/shader/slang/slang_vartable.c92
1 files changed, 47 insertions, 45 deletions
diff --git a/src/mesa/shader/slang/slang_vartable.c b/src/mesa/shader/slang/slang_vartable.c
index cadefda1bca..02714554282 100644
--- a/src/mesa/shader/slang/slang_vartable.c
+++ b/src/mesa/shader/slang/slang_vartable.c
@@ -24,8 +24,8 @@ struct slang_var_table_
int num_entries;
slang_variable **vars; /* array [num_entries] */
- TempState temps[MAX_PROGRAM_TEMPS * 4];
- int size[MAX_PROGRAM_TEMPS];
+ TempState temps[MAX_PROGRAM_TEMPS * 4]; /* per-component state */
+ int size[MAX_PROGRAM_TEMPS]; /* For debug only */
struct slang_var_table_ *parent;
};
@@ -94,7 +94,7 @@ _slang_pop_var_table(slang_var_table *t)
* were for temps
*/
for (i = 0; i < MAX_PROGRAM_TEMPS * 4; i++) {
- if (t->temps[i] && !t->parent->temps[i]) {
+ if (t->temps[i] != FREE && t->parent->temps[i] == FREE) {
if (dbg) printf(" Free reg %d\n", i/4);
assert(t->temps[i] == TEMP);
}
@@ -160,7 +160,7 @@ alloc_reg(slang_var_table *t, GLint size, GLboolean isTemp)
for (i = 0; i < MAX_PROGRAM_TEMPS - size; i += step) {
GLuint found = 0;
for (j = 0; j < size; j++) {
- if (i + j < MAX_PROGRAM_TEMPS && !t->temps[i + j]) {
+ if (i + j < MAX_PROGRAM_TEMPS && t->temps[i + j] == FREE) {
found++;
}
else {
@@ -188,24 +188,26 @@ alloc_reg(slang_var_table *t, GLint size, GLboolean isTemp)
* \param swizzle returns swizzle mask for accessing var in register
* \return register allocated, or -1
*/
-GLint
-_slang_alloc_var(slang_var_table *t, GLint size, GLuint *swizzle)
+GLboolean
+_slang_alloc_var(slang_var_table *t, slang_ir_storage *store)
{
- int i = alloc_reg(t, size, GL_FALSE);
+ const int i = alloc_reg(t, store->Size, GL_FALSE);
if (i < 0)
- return -1;
+ return GL_FALSE;
- if (size == 1) {
- GLuint comp = i % 4;
- *swizzle = MAKE_SWIZZLE4(comp, comp, comp, comp);
- char swz = "xyzw"[comp];
- if (dbg) printf("Alloc var sz %d at %d.%c (level %d)\n", size, i/4, swz, t->level);
+ store->Index = i / 4;
+ if (store->Size == 1) {
+ const GLuint comp = i % 4;
+ store->Swizzle = MAKE_SWIZZLE4(comp, comp, comp, comp);
+ if (dbg) printf("Alloc var sz %d at %d.%c (level %d)\n",
+ store->Size, store->Index, "xyzw"[comp], t->level);
}
else {
- *swizzle = SWIZZLE_NOOP;
- if (dbg) printf("Alloc var sz %d at %d.xyzw (level %d)\n", size, i/4, t->level);
+ store->Swizzle = SWIZZLE_NOOP;
+ if (dbg) printf("Alloc var sz %d at %d.xyzw (level %d)\n",
+ store->Size, store->Index, t->level);
}
- return i / 4;
+ return GL_TRUE;
}
@@ -213,50 +215,50 @@ _slang_alloc_var(slang_var_table *t, GLint size, GLuint *swizzle)
/**
* Allocate temp register(s) for storing an unnamed intermediate value.
*/
-GLint
-_slang_alloc_temp(slang_var_table *t, GLint size, GLuint *swizzle)
+GLboolean
+_slang_alloc_temp(slang_var_table *t, slang_ir_storage *store)
{
- int i = alloc_reg(t, size, GL_TRUE);
+ const int i = alloc_reg(t, store->Size, GL_TRUE);
if (i < 0)
- return -1;
+ return GL_FALSE;
- if (size == 1) {
- GLuint comp = i % 4;
- assert(comp < 4);
- int swz = "xyzw"[comp];
- *swizzle = MAKE_SWIZZLE4(comp, comp, comp, comp);
+ store->Index = i / 4;
+ if (store->Size == 1) {
+ const GLuint comp = i % 4;
+ store->Swizzle = MAKE_SWIZZLE4(comp, comp, comp, comp);
if (dbg) printf("Alloc temp sz %d at %d.%c (level %d)\n",
- size, i/4, swz, t->level);
+ store->Size, store->Index, "xyzw"[comp], t->level);
}
else {
- *swizzle = SWIZZLE_NOOP;
+ store->Swizzle = SWIZZLE_NOOP;
if (dbg) printf("Alloc temp sz %d at %d.xyzw (level %d)\n",
- size, i/4, t->level);
+ store->Size, store->Index, t->level);
}
- return i / 4;
+ return GL_TRUE;
}
void
-_slang_free_temp(slang_var_table *t, GLint r, GLint size, GLuint swizzle)
+_slang_free_temp(slang_var_table *t, slang_ir_storage *store)
{
GLuint i;
- assert(size > 0);
+ GLuint r = store->Index;
+ assert(store->Size > 0);
assert(r >= 0);
- assert(r + size <= MAX_PROGRAM_TEMPS);
- if (dbg) printf("Free temp sz %d at %d (level %d)\n", size, r, t->level);
- if (size == 1) {
- GLuint comp = GET_SWZ(swizzle, 0);
- assert(swizzle == MAKE_SWIZZLE4(comp, comp, comp, comp));
+ assert(r + store->Size <= MAX_PROGRAM_TEMPS);
+ if (dbg) printf("Free temp sz %d at %d (level %d)\n", store->Size, r, t->level);
+ if (store->Size == 1) {
+ const GLuint comp = GET_SWZ(store->Swizzle, 0);
+ assert(store->Swizzle == MAKE_SWIZZLE4(comp, comp, comp, comp));
assert(comp < 4);
assert(t->size[r * 4 + comp] == 1);
assert(t->temps[r * 4 + comp] == TEMP);
t->temps[r * 4 + comp] = FREE;
}
else {
- assert(swizzle == SWIZZLE_NOOP);
- assert(t->size[r*4] == size);
- for (i = 0; i < size; i++) {
+ assert(store->Swizzle == SWIZZLE_NOOP);
+ assert(t->size[r*4] == store->Size);
+ for (i = 0; i < store->Size; i++) {
assert(t->temps[r * 4 + i] == TEMP);
t->temps[r * 4 + i] = FREE;
}
@@ -265,17 +267,17 @@ _slang_free_temp(slang_var_table *t, GLint r, GLint size, GLuint swizzle)
GLboolean
-_slang_is_temp(slang_var_table *t, GLint r, GLuint swizzle)
+_slang_is_temp(slang_var_table *t, slang_ir_storage *store)
{
- assert(r >= 0);
- assert(r < MAX_PROGRAM_TEMPS);
+ assert(store->Index >= 0);
+ assert(store->Index < MAX_PROGRAM_TEMPS);
GLuint comp;
- if (swizzle == SWIZZLE_NOOP)
+ if (store->Swizzle == SWIZZLE_NOOP)
comp = 0;
else
- comp = GET_SWZ(swizzle, 0);
+ comp = GET_SWZ(store->Swizzle, 0);
- if (t->temps[r * 4 + comp] == TEMP)
+ if (t->temps[store->Index * 4 + comp] == TEMP)
return GL_TRUE;
else
return GL_FALSE;