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path: root/mesalib/src/glsl/ir_constant_expression.cpp
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Diffstat (limited to 'mesalib/src/glsl/ir_constant_expression.cpp')
-rw-r--r--mesalib/src/glsl/ir_constant_expression.cpp58
1 files changed, 27 insertions, 31 deletions
diff --git a/mesalib/src/glsl/ir_constant_expression.cpp b/mesalib/src/glsl/ir_constant_expression.cpp
index 2841fb350..2a3084896 100644
--- a/mesalib/src/glsl/ir_constant_expression.cpp
+++ b/mesalib/src/glsl/ir_constant_expression.cpp
@@ -288,24 +288,20 @@ ir_expression::constant_expression_value()
break;
case ir_unop_rcp:
- /* FINISHME: Emit warning when division-by-zero is detected. */
assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
for (unsigned c = 0; c < op[0]->type->components(); c++) {
switch (this->type->base_type) {
case GLSL_TYPE_UINT:
- if (op[0]->value.u[c] == 0.0)
- return NULL;
- data.u[c] = 1 / op[0]->value.u[c];
+ if (op[0]->value.u[c] != 0.0)
+ data.u[c] = 1 / op[0]->value.u[c];
break;
case GLSL_TYPE_INT:
- if (op[0]->value.i[c] == 0.0)
- return NULL;
- data.i[c] = 1 / op[0]->value.i[c];
+ if (op[0]->value.i[c] != 0.0)
+ data.i[c] = 1 / op[0]->value.i[c];
break;
case GLSL_TYPE_FLOAT:
- if (op[0]->value.f[c] == 0.0)
- return NULL;
- data.f[c] = 1.0F / op[0]->value.f[c];
+ if (op[0]->value.f[c] != 0.0)
+ data.f[c] = 1.0F / op[0]->value.f[c];
break;
default:
assert(0);
@@ -314,13 +310,9 @@ ir_expression::constant_expression_value()
break;
case ir_unop_rsq:
- /* FINISHME: Emit warning when division-by-zero is detected. */
assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
for (unsigned c = 0; c < op[0]->type->components(); c++) {
- float s = sqrtf(op[0]->value.f[c]);
- if (s == 0)
- return NULL;
- data.f[c] = 1.0F / s;
+ data.f[c] = 1.0F / sqrtf(op[0]->value.f[c]);
}
break;
@@ -523,18 +515,20 @@ ir_expression::constant_expression_value()
switch (op[0]->type->base_type) {
case GLSL_TYPE_UINT:
- if (op[1]->value.u[c1] == 0)
- return NULL;
- 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:
- if (op[1]->value.i[c1] == 0)
- return NULL;
- 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:
- if (op[1]->value.f[c1] == 0)
- return NULL;
data.f[c] = op[0]->value.f[c0] / op[1]->value.f[c1];
break;
default:
@@ -552,18 +546,20 @@ ir_expression::constant_expression_value()
switch (op[0]->type->base_type) {
case GLSL_TYPE_UINT:
- if (op[1]->value.u[c1] == 0)
- return NULL;
- 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:
- if (op[1]->value.i[c1] == 0)
- return NULL;
- 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:
- if (op[1]->value.f[c1] == 0)
- return NULL;
/* We don't use fmod because it rounds toward zero; GLSL specifies
* the use of floor.
*/