*/
#include <math.h>
-#include "main/macros.h"
+#include "main/core.h" /* for MAX2, MIN2, CLAMP */
#include "ir.h"
#include "ir_visitor.h"
#include "glsl_types.h"
+#include "program/hash_table.h"
+
+/* Using C99 rounding functions for roundToEven() implementation is
+ * difficult, because round(), rint, and nearbyint() are affected by
+ * fesetenv(), which the application may have done for its own
+ * purposes. Mesa's IROUND macro is close to what we want, but it
+ * rounds away from 0 on n + 0.5.
+ */
+static int
+round_to_even(float val)
+{
+ int rounded = IROUND(val);
+
+ if (val - floor(val) == 0.5) {
+ if (rounded % 2 != 0)
+ rounded += val > 0 ? -1 : 1;
+ }
+
+ return rounded;
+}
+
+static float
+dot(ir_constant *op0, ir_constant *op1)
+{
+ assert(op0->type->is_float() && op1->type->is_float());
+
+ float result = 0;
+ for (unsigned c = 0; c < op0->type->components(); c++)
+ result += op0->value.f[c] * op1->value.f[c];
+
+ return result;
+}
+
+/* This method is the only one supported by gcc. Unions in particular
+ * are iffy, and read-through-converted-pointer is killed by strict
+ * aliasing. OTOH, the compiler sees through the memcpy, so the
+ * resulting asm is reasonable.
+ */
+static float
+bitcast_u2f(unsigned int u)
+{
+ assert(sizeof(float) == sizeof(unsigned int));
+ float f;
+ memcpy(&f, &u, sizeof(f));
+ return f;
+}
+
+static unsigned int
+bitcast_f2u(float f)
+{
+ assert(sizeof(float) == sizeof(unsigned int));
+ unsigned int u;
+ memcpy(&u, &f, sizeof(f));
+ return u;
+}
+
+ir_constant *
+ir_rvalue::constant_expression_value(struct hash_table *variable_context)
+{
+ assert(this->type->is_error());
+ return NULL;
+}
ir_constant *
-ir_expression::constant_expression_value()
+ir_expression::constant_expression_value(struct hash_table *variable_context)
{
- ir_constant *op[2] = { NULL, NULL };
+ if (this->type->is_error())
+ return NULL;
+
+ ir_constant *op[Elements(this->operands)] = { NULL, };
ir_constant_data data;
memset(&data, 0, sizeof(data));
for (unsigned operand = 0; operand < this->get_num_operands(); operand++) {
- op[operand] = this->operands[operand]->constant_expression_value();
+ op[operand] = this->operands[operand]->constant_expression_value(variable_context);
if (!op[operand])
return NULL;
}
if (op[1] != NULL)
- assert(op[0]->type->base_type == op[1]->type->base_type);
+ assert(op[0]->type->base_type == op[1]->type->base_type ||
+ this->operation == ir_binop_lshift ||
+ this->operation == ir_binop_rshift);
bool op0_scalar = op[0]->type->is_scalar();
bool op1_scalar = op[1] != NULL && op[1]->type->is_scalar();
components = op[1]->type->components();
}
- void *ctx = talloc_parent(this);
+ void *ctx = ralloc_parent(this);
/* Handle array operations here, rather than below. */
if (op[0]->type->is_array()) {
assert(op[1] != NULL && op[1]->type->is_array());
switch (this->operation) {
- case ir_binop_equal:
+ case ir_binop_all_equal:
return new(ctx) ir_constant(op[0]->has_value(op[1]));
- case ir_binop_nequal:
+ case ir_binop_any_nequal:
return new(ctx) ir_constant(!op[0]->has_value(op[1]));
default:
break;
}
switch (this->operation) {
+ case ir_unop_bit_not:
+ switch (op[0]->type->base_type) {
+ case GLSL_TYPE_INT:
+ for (unsigned c = 0; c < components; c++)
+ data.i[c] = ~ op[0]->value.i[c];
+ break;
+ case GLSL_TYPE_UINT:
+ for (unsigned c = 0; c < components; c++)
+ data.u[c] = ~ op[0]->value.u[c];
+ break;
+ default:
+ assert(0);
+ }
+ break;
+
case ir_unop_logic_not:
assert(op[0]->type->base_type == GLSL_TYPE_BOOL);
for (unsigned c = 0; c < op[0]->type->components(); c++)
case ir_unop_f2i:
assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
for (unsigned c = 0; c < op[0]->type->components(); c++) {
- data.i[c] = op[0]->value.f[c];
+ data.i[c] = (int) op[0]->value.f[c];
+ }
+ break;
+ case ir_unop_f2u:
+ assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
+ for (unsigned c = 0; c < op[0]->type->components(); c++) {
+ data.i[c] = (unsigned) op[0]->value.f[c];
}
break;
case ir_unop_i2f:
assert(op[0]->type->base_type == GLSL_TYPE_INT);
for (unsigned c = 0; c < op[0]->type->components(); c++) {
- data.f[c] = op[0]->value.i[c];
+ data.f[c] = (float) op[0]->value.i[c];
}
break;
case ir_unop_u2f:
assert(op[0]->type->base_type == GLSL_TYPE_UINT);
for (unsigned c = 0; c < op[0]->type->components(); c++) {
- data.f[c] = op[0]->value.u[c];
+ data.f[c] = (float) op[0]->value.u[c];
}
break;
case ir_unop_b2f:
assert(op[0]->type->base_type == GLSL_TYPE_BOOL);
for (unsigned c = 0; c < op[0]->type->components(); c++) {
- data.f[c] = op[0]->value.b[c] ? 1.0 : 0.0;
+ data.f[c] = op[0]->value.b[c] ? 1.0F : 0.0F;
}
break;
case ir_unop_f2b:
assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
for (unsigned c = 0; c < op[0]->type->components(); c++) {
- data.b[c] = bool(op[0]->value.f[c]);
+ data.b[c] = op[0]->value.f[c] != 0.0F ? true : false;
}
break;
case ir_unop_b2i:
case ir_unop_i2b:
assert(op[0]->type->is_integer());
for (unsigned c = 0; c < op[0]->type->components(); c++) {
- data.b[c] = bool(op[0]->value.u[c]);
+ data.b[c] = op[0]->value.u[c] ? true : false;
+ }
+ break;
+ case ir_unop_u2i:
+ assert(op[0]->type->base_type == GLSL_TYPE_UINT);
+ for (unsigned c = 0; c < op[0]->type->components(); c++) {
+ data.i[c] = op[0]->value.u[c];
+ }
+ break;
+ case ir_unop_i2u:
+ assert(op[0]->type->base_type == GLSL_TYPE_INT);
+ for (unsigned c = 0; c < op[0]->type->components(); c++) {
+ data.u[c] = op[0]->value.i[c];
+ }
+ break;
+ case ir_unop_bitcast_i2f:
+ assert(op[0]->type->base_type == GLSL_TYPE_INT);
+ for (unsigned c = 0; c < op[0]->type->components(); c++) {
+ data.f[c] = bitcast_u2f(op[0]->value.i[c]);
+ }
+ break;
+ case ir_unop_bitcast_f2i:
+ assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
+ for (unsigned c = 0; c < op[0]->type->components(); c++) {
+ data.i[c] = bitcast_f2u(op[0]->value.f[c]);
+ }
+ break;
+ case ir_unop_bitcast_u2f:
+ assert(op[0]->type->base_type == GLSL_TYPE_UINT);
+ for (unsigned c = 0; c < op[0]->type->components(); c++) {
+ data.f[c] = bitcast_u2f(op[0]->value.u[c]);
+ }
+ break;
+ case ir_unop_bitcast_f2u:
+ assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
+ for (unsigned c = 0; c < op[0]->type->components(); c++) {
+ data.u[c] = bitcast_f2u(op[0]->value.f[c]);
+ }
+ break;
+ case ir_unop_any:
+ assert(op[0]->type->is_boolean());
+ data.b[0] = false;
+ for (unsigned c = 0; c < op[0]->type->components(); c++) {
+ if (op[0]->value.b[c])
+ data.b[0] = true;
}
break;
}
break;
+ case ir_unop_round_even:
+ assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
+ for (unsigned c = 0; c < op[0]->type->components(); c++) {
+ data.f[c] = round_to_even(op[0]->value.f[c]);
+ }
+ break;
+
case ir_unop_ceil:
assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
for (unsigned c = 0; c < op[0]->type->components(); c++) {
break;
case ir_unop_sin:
+ case ir_unop_sin_reduced:
assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
for (unsigned c = 0; c < op[0]->type->components(); c++) {
data.f[c] = sinf(op[0]->value.f[c]);
break;
case ir_unop_cos:
+ case ir_unop_cos_reduced:
assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
for (unsigned c = 0; c < op[0]->type->components(); c++) {
data.f[c] = cosf(op[0]->value.f[c]);
for (unsigned c = 0; c < op[0]->type->components(); c++) {
switch (this->type->base_type) {
case GLSL_TYPE_UINT:
- data.u[c] = -op[0]->value.u[c];
+ data.u[c] = -((int) op[0]->value.u[c]);
break;
case GLSL_TYPE_INT:
data.i[c] = -op[0]->value.i[c];
break;
case GLSL_TYPE_FLOAT:
if (op[0]->value.f[c] != 0.0)
- data.f[c] = 1.0 / op[0]->value.f[c];
+ data.f[c] = 1.0F / op[0]->value.f[c];
break;
default:
assert(0);
case ir_unop_rsq:
assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
for (unsigned c = 0; c < op[0]->type->components(); c++) {
- data.f[c] = 1.0 / sqrtf(op[0]->value.f[c]);
+ data.f[c] = 1.0F / sqrtf(op[0]->value.f[c]);
}
break;
break;
case ir_binop_dot:
- assert(op[0]->type->is_vector() && op[1]->type->is_vector());
- data.f[0] = 0;
- for (unsigned c = 0; c < op[0]->type->components(); c++) {
- switch (op[0]->type->base_type) {
- case GLSL_TYPE_UINT:
- data.u[0] += op[0]->value.u[c] * op[1]->value.u[c];
- break;
- case GLSL_TYPE_INT:
- data.i[0] += op[0]->value.i[c] * op[1]->value.i[c];
- break;
- case GLSL_TYPE_FLOAT:
- data.f[0] += op[0]->value.f[c] * op[1]->value.f[c];
- break;
- default:
- assert(0);
- }
- }
-
+ data.f[0] = dot(op[0], op[1]);
break;
+
case ir_binop_min:
assert(op[0]->type == op[1]->type || op0_scalar || op1_scalar);
for (unsigned c = 0, c0 = 0, c1 = 0;
}
break;
- case ir_binop_cross:
- assert(op[0]->type == glsl_type::vec3_type);
- assert(op[1]->type == glsl_type::vec3_type);
- data.f[0] = (op[0]->value.f[1] * op[1]->value.f[2] -
- op[1]->value.f[1] * op[0]->value.f[2]);
- data.f[1] = (op[0]->value.f[2] * op[1]->value.f[0] -
- op[1]->value.f[2] * op[0]->value.f[0]);
- data.f[2] = (op[0]->value.f[0] * op[1]->value.f[1] -
- op[1]->value.f[0] * op[0]->value.f[1]);
- break;
-
case ir_binop_add:
assert(op[0]->type == op[1]->type || op0_scalar || op1_scalar);
for (unsigned c = 0, c0 = 0, c1 = 0;
break;
case ir_binop_div:
+ /* FINISHME: Emit warning when division-by-zero is detected. */
assert(op[0]->type == op[1]->type || op0_scalar || op1_scalar);
for (unsigned c = 0, c0 = 0, c1 = 0;
c < components;
switch (op[0]->type->base_type) {
case GLSL_TYPE_UINT:
- data.u[c] = op[0]->value.u[c0] / op[1]->value.u[c1];
+ if (op[1]->value.u[c1] == 0) {
+ data.u[c] = 0;
+ } else {
+ data.u[c] = op[0]->value.u[c0] / op[1]->value.u[c1];
+ }
break;
case GLSL_TYPE_INT:
- data.i[c] = op[0]->value.i[c0] / op[1]->value.i[c1];
+ if (op[1]->value.i[c1] == 0) {
+ data.i[c] = 0;
+ } else {
+ data.i[c] = op[0]->value.i[c0] / op[1]->value.i[c1];
+ }
break;
case GLSL_TYPE_FLOAT:
data.f[c] = op[0]->value.f[c0] / op[1]->value.f[c1];
break;
case ir_binop_mod:
+ /* FINISHME: Emit warning when division-by-zero is detected. */
assert(op[0]->type == op[1]->type || op0_scalar || op1_scalar);
for (unsigned c = 0, c0 = 0, c1 = 0;
c < components;
switch (op[0]->type->base_type) {
case GLSL_TYPE_UINT:
- data.u[c] = op[0]->value.u[c0] % op[1]->value.u[c1];
+ if (op[1]->value.u[c1] == 0) {
+ data.u[c] = 0;
+ } else {
+ data.u[c] = op[0]->value.u[c0] % op[1]->value.u[c1];
+ }
break;
case GLSL_TYPE_INT:
- data.i[c] = op[0]->value.i[c0] % op[1]->value.i[c1];
+ if (op[1]->value.i[c1] == 0) {
+ data.i[c] = 0;
+ } else {
+ data.i[c] = op[0]->value.i[c0] % op[1]->value.i[c1];
+ }
break;
case GLSL_TYPE_FLOAT:
/* We don't use fmod because it rounds toward zero; GLSL specifies
break;
case ir_binop_less:
- switch (op[0]->type->base_type) {
- case GLSL_TYPE_UINT:
- data.b[0] = op[0]->value.u[0] < op[1]->value.u[0];
- break;
- case GLSL_TYPE_INT:
- data.b[0] = op[0]->value.i[0] < op[1]->value.i[0];
- break;
- case GLSL_TYPE_FLOAT:
- data.b[0] = op[0]->value.f[0] < op[1]->value.f[0];
- break;
- default:
- assert(0);
+ assert(op[0]->type == op[1]->type);
+ for (unsigned c = 0; c < op[0]->type->components(); c++) {
+ switch (op[0]->type->base_type) {
+ case GLSL_TYPE_UINT:
+ data.b[c] = op[0]->value.u[c] < op[1]->value.u[c];
+ break;
+ case GLSL_TYPE_INT:
+ data.b[c] = op[0]->value.i[c] < op[1]->value.i[c];
+ break;
+ case GLSL_TYPE_FLOAT:
+ data.b[c] = op[0]->value.f[c] < op[1]->value.f[c];
+ break;
+ default:
+ assert(0);
+ }
}
break;
case ir_binop_greater:
- switch (op[0]->type->base_type) {
- case GLSL_TYPE_UINT:
- data.b[0] = op[0]->value.u[0] > op[1]->value.u[0];
- break;
- case GLSL_TYPE_INT:
- data.b[0] = op[0]->value.i[0] > op[1]->value.i[0];
- break;
- case GLSL_TYPE_FLOAT:
- data.b[0] = op[0]->value.f[0] > op[1]->value.f[0];
- break;
- default:
- assert(0);
+ assert(op[0]->type == op[1]->type);
+ for (unsigned c = 0; c < op[0]->type->components(); c++) {
+ switch (op[0]->type->base_type) {
+ case GLSL_TYPE_UINT:
+ data.b[c] = op[0]->value.u[c] > op[1]->value.u[c];
+ break;
+ case GLSL_TYPE_INT:
+ data.b[c] = op[0]->value.i[c] > op[1]->value.i[c];
+ break;
+ case GLSL_TYPE_FLOAT:
+ data.b[c] = op[0]->value.f[c] > op[1]->value.f[c];
+ break;
+ default:
+ assert(0);
+ }
}
break;
case ir_binop_lequal:
- switch (op[0]->type->base_type) {
- case GLSL_TYPE_UINT:
- data.b[0] = op[0]->value.u[0] <= op[1]->value.u[0];
- break;
- case GLSL_TYPE_INT:
- data.b[0] = op[0]->value.i[0] <= op[1]->value.i[0];
- break;
- case GLSL_TYPE_FLOAT:
- data.b[0] = op[0]->value.f[0] <= op[1]->value.f[0];
- break;
- default:
- assert(0);
+ assert(op[0]->type == op[1]->type);
+ for (unsigned c = 0; c < op[0]->type->components(); c++) {
+ switch (op[0]->type->base_type) {
+ case GLSL_TYPE_UINT:
+ data.b[c] = op[0]->value.u[c] <= op[1]->value.u[c];
+ break;
+ case GLSL_TYPE_INT:
+ data.b[c] = op[0]->value.i[c] <= op[1]->value.i[c];
+ break;
+ case GLSL_TYPE_FLOAT:
+ data.b[c] = op[0]->value.f[c] <= op[1]->value.f[c];
+ break;
+ default:
+ assert(0);
+ }
}
break;
case ir_binop_gequal:
- switch (op[0]->type->base_type) {
- case GLSL_TYPE_UINT:
- data.b[0] = op[0]->value.u[0] >= op[1]->value.u[0];
- break;
- case GLSL_TYPE_INT:
- data.b[0] = op[0]->value.i[0] >= op[1]->value.i[0];
- break;
- case GLSL_TYPE_FLOAT:
- data.b[0] = op[0]->value.f[0] >= op[1]->value.f[0];
- break;
- default:
- assert(0);
+ assert(op[0]->type == op[1]->type);
+ for (unsigned c = 0; c < op[0]->type->components(); c++) {
+ switch (op[0]->type->base_type) {
+ case GLSL_TYPE_UINT:
+ data.b[c] = op[0]->value.u[c] >= op[1]->value.u[c];
+ break;
+ case GLSL_TYPE_INT:
+ data.b[c] = op[0]->value.i[c] >= op[1]->value.i[c];
+ break;
+ case GLSL_TYPE_FLOAT:
+ data.b[c] = op[0]->value.f[c] >= op[1]->value.f[c];
+ break;
+ default:
+ assert(0);
+ }
}
break;
-
case ir_binop_equal:
- data.b[0] = op[0]->has_value(op[1]);
+ assert(op[0]->type == op[1]->type);
+ for (unsigned c = 0; c < components; c++) {
+ switch (op[0]->type->base_type) {
+ case GLSL_TYPE_UINT:
+ data.b[c] = op[0]->value.u[c] == op[1]->value.u[c];
+ break;
+ case GLSL_TYPE_INT:
+ data.b[c] = op[0]->value.i[c] == op[1]->value.i[c];
+ break;
+ case GLSL_TYPE_FLOAT:
+ data.b[c] = op[0]->value.f[c] == op[1]->value.f[c];
+ break;
+ case GLSL_TYPE_BOOL:
+ data.b[c] = op[0]->value.b[c] == op[1]->value.b[c];
+ break;
+ default:
+ assert(0);
+ }
+ }
break;
case ir_binop_nequal:
+ assert(op[0]->type == op[1]->type);
+ for (unsigned c = 0; c < components; c++) {
+ switch (op[0]->type->base_type) {
+ case GLSL_TYPE_UINT:
+ data.b[c] = op[0]->value.u[c] != op[1]->value.u[c];
+ break;
+ case GLSL_TYPE_INT:
+ data.b[c] = op[0]->value.i[c] != op[1]->value.i[c];
+ break;
+ case GLSL_TYPE_FLOAT:
+ data.b[c] = op[0]->value.f[c] != op[1]->value.f[c];
+ break;
+ case GLSL_TYPE_BOOL:
+ data.b[c] = op[0]->value.b[c] != op[1]->value.b[c];
+ break;
+ default:
+ assert(0);
+ }
+ }
+ break;
+ case ir_binop_all_equal:
+ data.b[0] = op[0]->has_value(op[1]);
+ break;
+ case ir_binop_any_nequal:
data.b[0] = !op[0]->has_value(op[1]);
break;
+ case ir_binop_lshift:
+ for (unsigned c = 0, c0 = 0, c1 = 0;
+ c < components;
+ c0 += c0_inc, c1 += c1_inc, c++) {
+
+ if (op[0]->type->base_type == GLSL_TYPE_INT &&
+ op[1]->type->base_type == GLSL_TYPE_INT) {
+ data.i[c] = op[0]->value.i[c0] << op[1]->value.i[c1];
+
+ } else if (op[0]->type->base_type == GLSL_TYPE_INT &&
+ op[1]->type->base_type == GLSL_TYPE_UINT) {
+ data.i[c] = op[0]->value.i[c0] << op[1]->value.u[c1];
+
+ } else if (op[0]->type->base_type == GLSL_TYPE_UINT &&
+ op[1]->type->base_type == GLSL_TYPE_INT) {
+ data.u[c] = op[0]->value.u[c0] << op[1]->value.i[c1];
+
+ } else if (op[0]->type->base_type == GLSL_TYPE_UINT &&
+ op[1]->type->base_type == GLSL_TYPE_UINT) {
+ data.u[c] = op[0]->value.u[c0] << op[1]->value.u[c1];
+ }
+ }
+ break;
+
+ case ir_binop_rshift:
+ for (unsigned c = 0, c0 = 0, c1 = 0;
+ c < components;
+ c0 += c0_inc, c1 += c1_inc, c++) {
+
+ if (op[0]->type->base_type == GLSL_TYPE_INT &&
+ op[1]->type->base_type == GLSL_TYPE_INT) {
+ data.i[c] = op[0]->value.i[c0] >> op[1]->value.i[c1];
+
+ } else if (op[0]->type->base_type == GLSL_TYPE_INT &&
+ op[1]->type->base_type == GLSL_TYPE_UINT) {
+ data.i[c] = op[0]->value.i[c0] >> op[1]->value.u[c1];
+
+ } else if (op[0]->type->base_type == GLSL_TYPE_UINT &&
+ op[1]->type->base_type == GLSL_TYPE_INT) {
+ data.u[c] = op[0]->value.u[c0] >> op[1]->value.i[c1];
+
+ } else if (op[0]->type->base_type == GLSL_TYPE_UINT &&
+ op[1]->type->base_type == GLSL_TYPE_UINT) {
+ data.u[c] = op[0]->value.u[c0] >> op[1]->value.u[c1];
+ }
+ }
+ break;
+
+ case ir_binop_bit_and:
+ for (unsigned c = 0, c0 = 0, c1 = 0;
+ c < components;
+ c0 += c0_inc, c1 += c1_inc, c++) {
+
+ switch (op[0]->type->base_type) {
+ case GLSL_TYPE_INT:
+ data.i[c] = op[0]->value.i[c0] & op[1]->value.i[c1];
+ break;
+ case GLSL_TYPE_UINT:
+ data.u[c] = op[0]->value.u[c0] & op[1]->value.u[c1];
+ break;
+ default:
+ assert(0);
+ }
+ }
+ break;
+
+ case ir_binop_bit_or:
+ for (unsigned c = 0, c0 = 0, c1 = 0;
+ c < components;
+ c0 += c0_inc, c1 += c1_inc, c++) {
+
+ switch (op[0]->type->base_type) {
+ case GLSL_TYPE_INT:
+ data.i[c] = op[0]->value.i[c0] | op[1]->value.i[c1];
+ break;
+ case GLSL_TYPE_UINT:
+ data.u[c] = op[0]->value.u[c0] | op[1]->value.u[c1];
+ break;
+ default:
+ assert(0);
+ }
+ }
+ break;
+
+ case ir_binop_bit_xor:
+ for (unsigned c = 0, c0 = 0, c1 = 0;
+ c < components;
+ c0 += c0_inc, c1 += c1_inc, c++) {
+
+ switch (op[0]->type->base_type) {
+ case GLSL_TYPE_INT:
+ data.i[c] = op[0]->value.i[c0] ^ op[1]->value.i[c1];
+ break;
+ case GLSL_TYPE_UINT:
+ data.u[c] = op[0]->value.u[c0] ^ op[1]->value.u[c1];
+ break;
+ default:
+ assert(0);
+ }
+ }
+ break;
+
+ case ir_quadop_vector:
+ for (unsigned c = 0; c < this->type->vector_elements; c++) {
+ switch (this->type->base_type) {
+ case GLSL_TYPE_INT:
+ data.i[c] = op[c]->value.i[0];
+ break;
+ case GLSL_TYPE_UINT:
+ data.u[c] = op[c]->value.u[0];
+ break;
+ case GLSL_TYPE_FLOAT:
+ data.f[c] = op[c]->value.f[0];
+ break;
+ default:
+ assert(0);
+ }
+ }
+ break;
+
default:
/* FINISHME: Should handle all expression types. */
return NULL;
ir_constant *
-ir_texture::constant_expression_value()
+ir_texture::constant_expression_value(struct hash_table *variable_context)
{
/* texture lookups aren't constant expressions */
return NULL;
ir_constant *
-ir_swizzle::constant_expression_value()
+ir_swizzle::constant_expression_value(struct hash_table *variable_context)
{
- ir_constant *v = this->val->constant_expression_value();
+ ir_constant *v = this->val->constant_expression_value(variable_context);
if (v != NULL) {
- ir_constant_data data;
+ ir_constant_data data = { { 0 } };
const unsigned swiz_idx[4] = {
this->mask.x, this->mask.y, this->mask.z, this->mask.w
}
}
- void *ctx = talloc_parent(this);
+ void *ctx = ralloc_parent(this);
return new(ctx) ir_constant(this->type, &data);
}
return NULL;
}
+void
+ir_dereference_variable::constant_referenced(struct hash_table *variable_context,
+ ir_constant *&store, int &offset) const
+{
+ if (variable_context) {
+ store = (ir_constant *)hash_table_find(variable_context, var);
+ offset = 0;
+ } else {
+ store = NULL;
+ offset = 0;
+ }
+}
+
ir_constant *
-ir_dereference_variable::constant_expression_value()
+ir_dereference_variable::constant_expression_value(struct hash_table *variable_context)
{
/* This may occur during compile and var->type is glsl_type::error_type */
if (!var)
return NULL;
- return var->constant_value ? var->constant_value->clone(NULL) : NULL;
+ /* Give priority to the context hashtable, if it exists */
+ if (variable_context) {
+ ir_constant *value = (ir_constant *)hash_table_find(variable_context, var);
+ if(value)
+ return value;
+ }
+
+ /* The constant_value of a uniform variable is its initializer,
+ * not the lifetime constant value of the uniform.
+ */
+ if (var->mode == ir_var_uniform)
+ return NULL;
+
+ if (!var->constant_value)
+ return NULL;
+
+ return var->constant_value->clone(ralloc_parent(var), NULL);
}
+void
+ir_dereference_array::constant_referenced(struct hash_table *variable_context,
+ ir_constant *&store, int &offset) const
+{
+ ir_constant *index_c = array_index->constant_expression_value(variable_context);
+
+ if (!index_c || !index_c->type->is_scalar() || !index_c->type->is_integer()) {
+ store = 0;
+ offset = 0;
+ return;
+ }
+
+ int index = index_c->type->base_type == GLSL_TYPE_INT ?
+ index_c->get_int_component(0) :
+ index_c->get_uint_component(0);
+
+ ir_constant *substore;
+ int suboffset;
+ const ir_dereference *deref = array->as_dereference();
+ if (!deref) {
+ store = 0;
+ offset = 0;
+ return;
+ }
+
+ deref->constant_referenced(variable_context, substore, suboffset);
+
+ if (!substore) {
+ store = 0;
+ offset = 0;
+ return;
+ }
+
+ const glsl_type *vt = substore->type;
+ if (vt->is_array()) {
+ store = substore->get_array_element(index);
+ offset = 0;
+ return;
+ }
+ if (vt->is_matrix()) {
+ store = substore;
+ offset = index * vt->vector_elements;
+ return;
+ }
+ if (vt->is_vector()) {
+ store = substore;
+ offset = suboffset + index;
+ return;
+ }
+
+ store = 0;
+ offset = 0;
+}
+
ir_constant *
-ir_dereference_array::constant_expression_value()
+ir_dereference_array::constant_expression_value(struct hash_table *variable_context)
{
- void *ctx = talloc_parent(this);
- ir_constant *array = this->array->constant_expression_value();
- ir_constant *idx = this->array_index->constant_expression_value();
+ ir_constant *array = this->array->constant_expression_value(variable_context);
+ ir_constant *idx = this->array_index->constant_expression_value(variable_context);
if ((array != NULL) && (idx != NULL)) {
+ void *ctx = ralloc_parent(this);
if (array->type->is_matrix()) {
/* Array access of a matrix results in a vector.
*/
*/
const unsigned mat_idx = column * column_type->vector_elements;
- ir_constant_data data;
+ ir_constant_data data = { { 0 } };
switch (column_type->base_type) {
case GLSL_TYPE_UINT:
return new(ctx) ir_constant(array, component);
} else {
const unsigned index = idx->value.u[0];
- return array->get_array_element(index)->clone(NULL);
+ return array->get_array_element(index)->clone(ctx, NULL);
}
}
return NULL;
}
+void
+ir_dereference_record::constant_referenced(struct hash_table *variable_context,
+ ir_constant *&store, int &offset) const
+{
+ ir_constant *substore;
+ int suboffset;
+ const ir_dereference *deref = record->as_dereference();
+ if (!deref) {
+ store = 0;
+ offset = 0;
+ return;
+ }
+
+ deref->constant_referenced(variable_context, substore, suboffset);
+
+ if (!substore) {
+ store = 0;
+ offset = 0;
+ return;
+ }
+
+ store = substore->get_record_field(field);
+ offset = 0;
+}
+
ir_constant *
-ir_dereference_record::constant_expression_value()
+ir_dereference_record::constant_expression_value(struct hash_table *variable_context)
{
ir_constant *v = this->record->constant_expression_value();
ir_constant *
-ir_assignment::constant_expression_value()
+ir_assignment::constant_expression_value(struct hash_table *variable_context)
{
/* FINISHME: Handle CEs involving assignment (return RHS) */
return NULL;
ir_constant *
-ir_constant::constant_expression_value()
+ir_constant::constant_expression_value(struct hash_table *variable_context)
{
return this;
}
ir_constant *
-ir_call::constant_expression_value()
+ir_call::constant_expression_value(struct hash_table *variable_context)
+{
+ return this->callee->constant_expression_value(&this->actual_parameters, variable_context);
+}
+
+
+bool ir_function_signature::constant_expression_evaluate_expression_list(const struct exec_list &body,
+ struct hash_table *variable_context,
+ ir_constant **result)
+{
+ foreach_list(n, &body) {
+ ir_instruction *inst = (ir_instruction *)n;
+ switch(inst->ir_type) {
+
+ /* (declare () type symbol) */
+ case ir_type_variable: {
+ ir_variable *var = inst->as_variable();
+ hash_table_insert(variable_context, ir_constant::zero(this, var->type), var);
+ break;
+ }
+
+ /* (assign [condition] (write-mask) (ref) (value)) */
+ case ir_type_assignment: {
+ ir_assignment *asg = inst->as_assignment();
+ if (asg->condition) {
+ ir_constant *cond = asg->condition->constant_expression_value(variable_context);
+ if (!cond)
+ return false;
+ if (!cond->get_bool_component(0))
+ break;
+ }
+
+ ir_constant *store = NULL;
+ int offset = 0;
+ asg->lhs->constant_referenced(variable_context, store, offset);
+
+ if (!store)
+ return false;
+
+ ir_constant *value = asg->rhs->constant_expression_value(variable_context);
+
+ if (!value)
+ return false;
+
+ store->copy_masked_offset(value, offset, asg->write_mask);
+ break;
+ }
+
+ /* (return (expression)) */
+ case ir_type_return:
+ assert (result);
+ *result = inst->as_return()->value->constant_expression_value(variable_context);
+ return *result != NULL;
+
+ /* (call name (ref) (params))*/
+ case ir_type_call: {
+ ir_call *call = inst->as_call();
+
+ /* Just say no to void functions in constant expressions. We
+ * don't need them at that point.
+ */
+
+ if (!call->return_deref)
+ return false;
+
+ ir_constant *store = NULL;
+ int offset = 0;
+ call->return_deref->constant_referenced(variable_context, store, offset);
+
+ if (!store)
+ return false;
+
+ ir_constant *value = call->constant_expression_value(variable_context);
+
+ if(!value)
+ return false;
+
+ store->copy_offset(value, offset);
+ break;
+ }
+
+ /* (if condition (then-instructions) (else-instructions)) */
+ case ir_type_if: {
+ ir_if *iif = inst->as_if();
+
+ ir_constant *cond = iif->condition->constant_expression_value(variable_context);
+ if (!cond || !cond->type->is_boolean())
+ return false;
+
+ exec_list &branch = cond->get_bool_component(0) ? iif->then_instructions : iif->else_instructions;
+
+ *result = NULL;
+ if (!constant_expression_evaluate_expression_list(branch, variable_context, result))
+ return false;
+
+ /* If there was a return in the branch chosen, drop out now. */
+ if (*result)
+ return true;
+
+ break;
+ }
+
+ /* Every other expression type, we drop out. */
+ default:
+ return false;
+ }
+ }
+
+ /* Reaching the end of the block is not an error condition */
+ if (result)
+ *result = NULL;
+
+ return true;
+}
+
+ir_constant *
+ir_function_signature::constant_expression_value(exec_list *actual_parameters, struct hash_table *variable_context)
{
- if (this->type == glsl_type::error_type)
+ const glsl_type *type = this->return_type;
+ if (type == glsl_type::void_type)
return NULL;
/* From the GLSL 1.20 spec, page 23:
* "Function calls to user-defined functions (non-built-in functions)
* cannot be used to form constant expressions."
*/
- if (!this->callee->is_built_in)
+ if (!this->is_builtin)
return NULL;
- unsigned num_parameters = 0;
+ /*
+ * Of the builtin functions, only the texture lookups and the noise
+ * ones must not be used in constant expressions. They all include
+ * specific opcodes so they don't need to be special-cased at this
+ * point.
+ */
- /* Check if all parameters are constant */
- ir_constant *op[3];
- foreach_list(n, &this->actual_parameters) {
- ir_constant *constant = ((ir_rvalue *) n)->constant_expression_value();
- if (constant == NULL)
- return NULL;
+ /* Initialize the table of dereferencable names with the function
+ * parameters. Verify their const-ness on the way.
+ *
+ * We expect the correctness of the number of parameters to have
+ * been checked earlier.
+ */
+ hash_table *deref_hash = hash_table_ctor(8, hash_table_pointer_hash,
+ hash_table_pointer_compare);
- op[num_parameters] = constant;
+ /* If "origin" is non-NULL, then the function body is there. So we
+ * have to use the variable objects from the object with the body,
+ * but the parameter instanciation on the current object.
+ */
+ const exec_node *parameter_info = origin ? origin->parameters.head : parameters.head;
- assert(num_parameters < 3);
- num_parameters++;
- }
+ foreach_list(n, actual_parameters) {
+ ir_constant *constant = ((ir_rvalue *) n)->constant_expression_value(variable_context);
+ if (constant == NULL) {
+ hash_table_dtor(deref_hash);
+ return NULL;
+ }
- /* Individual cases below can either:
- * - Assign "expr" a new ir_expression to evaluate (for basic opcodes)
- * - Fill "data" with appopriate constant data
- * - Return an ir_constant directly.
- */
- void *mem_ctx = talloc_parent(this);
- ir_expression *expr = NULL;
- ir_constant_data data;
- memset(&data, 0, sizeof(data));
+ ir_variable *var = (ir_variable *)parameter_info;
+ hash_table_insert(deref_hash, constant, var);
- const char *callee = this->callee_name();
- if (strcmp(callee, "abs") == 0) {
- expr = new(mem_ctx) ir_expression(ir_unop_abs, type, op[0], NULL);
- } else if (strcmp(callee, "all") == 0) {
- assert(op[0]->type->is_boolean());
- for (unsigned c = 0; c < op[0]->type->components(); c++) {
- if (!op[0]->value.b[c])
- return new(mem_ctx) ir_constant(false);
- }
- return new(mem_ctx) ir_constant(true);
- } else if (strcmp(callee, "any") == 0) {
- assert(op[0]->type->is_boolean());
- for (unsigned c = 0; c < op[0]->type->components(); c++) {
- if (op[0]->value.b[c])
- return new(mem_ctx) ir_constant(true);
- }
- return new(mem_ctx) ir_constant(false);
- } else if (strcmp(callee, "asin") == 0) {
- assert(op[0]->type->is_float());
- for (unsigned c = 0; c < op[0]->type->components(); c++)
- data.f[c] = asinf(op[0]->value.f[c]);
- } else if (strcmp(callee, "atan") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "dFdx") == 0 || strcmp(callee, "dFdy") == 0) {
- return ir_constant::zero(mem_ctx, this->type);
- } else if (strcmp(callee, "ceil") == 0) {
- expr = new(mem_ctx) ir_expression(ir_unop_ceil, type, op[0], NULL);
- } else if (strcmp(callee, "clamp") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "cos") == 0) {
- expr = new(mem_ctx) ir_expression(ir_unop_cos, type, op[0], NULL);
- } else if (strcmp(callee, "cosh") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "cross") == 0) {
- expr = new(mem_ctx) ir_expression(ir_binop_cross, type, op[0], op[1]);
- } else if (strcmp(callee, "degrees") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "distance") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "dot") == 0) {
- expr = new(mem_ctx) ir_expression(ir_binop_dot, type, op[0], op[1]);
- } else if (strcmp(callee, "equal") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "exp") == 0) {
- expr = new(mem_ctx) ir_expression(ir_unop_exp, type, op[0], NULL);
- } else if (strcmp(callee, "exp2") == 0) {
- expr = new(mem_ctx) ir_expression(ir_unop_exp2, type, op[0], NULL);
- } else if (strcmp(callee, "faceforward") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "floor") == 0) {
- expr = new(mem_ctx) ir_expression(ir_unop_floor, type, op[0], NULL);
- } else if (strcmp(callee, "fract") == 0) {
- expr = new(mem_ctx) ir_expression(ir_unop_fract, type, op[0], NULL);
- } else if (strcmp(callee, "fwidth") == 0) {
- return ir_constant::zero(mem_ctx, this->type);
- } else if (strcmp(callee, "greaterThan") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "greaterThanEqual") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "inversesqrt") == 0) {
- expr = new(mem_ctx) ir_expression(ir_unop_rsq, type, op[0], NULL);
- } else if (strcmp(callee, "length") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "lessThan") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "lessThanEqual") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "log") == 0) {
- expr = new(mem_ctx) ir_expression(ir_unop_log, type, op[0], NULL);
- } else if (strcmp(callee, "log2") == 0) {
- expr = new(mem_ctx) ir_expression(ir_unop_log2, type, op[0], NULL);
- } else if (strcmp(callee, "matrixCompMult") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "max") == 0) {
- expr = new(mem_ctx) ir_expression(ir_binop_max, type, op[0], op[1]);
- } else if (strcmp(callee, "min") == 0) {
- expr = new(mem_ctx) ir_expression(ir_binop_min, type, op[0], op[1]);
- } else if (strcmp(callee, "mix") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "mod") == 0) {
- expr = new(mem_ctx) ir_expression(ir_binop_mod, type, op[0], op[1]);
- } else if (strcmp(callee, "normalize") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "not") == 0) {
- expr = new(mem_ctx) ir_expression(ir_unop_logic_not, type, op[0], NULL);
- } else if (strcmp(callee, "notEqual") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "outerProduct") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "pow") == 0) {
- expr = new(mem_ctx) ir_expression(ir_binop_pow, type, op[0], op[1]);
- } else if (strcmp(callee, "radians") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "reflect") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "refract") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "sign") == 0) {
- expr = new(mem_ctx) ir_expression(ir_unop_sign, type, op[0], NULL);
- } else if (strcmp(callee, "sin") == 0) {
- expr = new(mem_ctx) ir_expression(ir_unop_sin, type, op[0], NULL);
- } else if (strcmp(callee, "sinh") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "smoothstep") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "sqrt") == 0) {
- expr = new(mem_ctx) ir_expression(ir_unop_sqrt, type, op[0], NULL);
- } else if (strcmp(callee, "step") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "tan") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "tanh") == 0) {
- return NULL; /* FINISHME: implement this */
- } else if (strcmp(callee, "transpose") == 0) {
- return NULL; /* FINISHME: implement this */
- } else {
- /* Unsupported builtin - some are not allowed in constant expressions. */
- return NULL;
+ parameter_info = parameter_info->next;
}
- if (expr != NULL)
- return expr->constant_expression_value();
+ ir_constant *result = NULL;
+
+ /* Now run the builtin function until something non-constant
+ * happens or we get the result.
+ */
+ if (constant_expression_evaluate_expression_list(origin ? origin->body : body, deref_hash, &result) && result)
+ result = result->clone(ralloc_parent(this), NULL);
+
+ hash_table_dtor(deref_hash);
- return new(mem_ctx) ir_constant(this->type, &data);
+ return result;
}