summaryrefslogtreecommitdiff
path: root/src/gallium/auxiliary/gallivm/lp_bld_quad.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/gallium/auxiliary/gallivm/lp_bld_quad.c')
-rw-r--r--src/gallium/auxiliary/gallivm/lp_bld_quad.c28
1 files changed, 18 insertions, 10 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_quad.c b/src/gallium/auxiliary/gallivm/lp_bld_quad.c
index 7b1088939b..c18c8b4710 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_quad.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_quad.c
@@ -81,11 +81,15 @@ LLVMValueRef
lp_build_scalar_ddx(struct lp_build_context *bld,
LLVMValueRef a)
{
- LLVMValueRef idx_left = LLVMConstInt(LLVMInt32Type(), LP_BLD_QUAD_TOP_LEFT, 0);
- LLVMValueRef idx_right = LLVMConstInt(LLVMInt32Type(), LP_BLD_QUAD_TOP_RIGHT, 0);
- LLVMValueRef a_left = LLVMBuildExtractElement(bld->builder, a, idx_left, "");
- LLVMValueRef a_right = LLVMBuildExtractElement(bld->builder, a, idx_right, "");
- return lp_build_sub(bld, a_right, a_left);
+ LLVMTypeRef i32t = LLVMInt32Type();
+ LLVMValueRef idx_left = LLVMConstInt(i32t, LP_BLD_QUAD_TOP_LEFT, 0);
+ LLVMValueRef idx_right = LLVMConstInt(i32t, LP_BLD_QUAD_TOP_RIGHT, 0);
+ LLVMValueRef a_left = LLVMBuildExtractElement(bld->builder, a, idx_left, "left");
+ LLVMValueRef a_right = LLVMBuildExtractElement(bld->builder, a, idx_right, "right");
+ if (bld->type.floating)
+ return LLVMBuildFSub(bld->builder, a_right, a_left, "ddx");
+ else
+ return LLVMBuildSub(bld->builder, a_right, a_left, "ddx");
}
@@ -93,9 +97,13 @@ LLVMValueRef
lp_build_scalar_ddy(struct lp_build_context *bld,
LLVMValueRef a)
{
- LLVMValueRef idx_top = LLVMConstInt(LLVMInt32Type(), LP_BLD_QUAD_TOP_LEFT, 0);
- LLVMValueRef idx_bottom = LLVMConstInt(LLVMInt32Type(), LP_BLD_QUAD_BOTTOM_LEFT, 0);
- LLVMValueRef a_top = LLVMBuildExtractElement(bld->builder, a, idx_top, "");
- LLVMValueRef a_bottom = LLVMBuildExtractElement(bld->builder, a, idx_bottom, "");
- return lp_build_sub(bld, a_bottom, a_top);
+ LLVMTypeRef i32t = LLVMInt32Type();
+ LLVMValueRef idx_top = LLVMConstInt(i32t, LP_BLD_QUAD_TOP_LEFT, 0);
+ LLVMValueRef idx_bottom = LLVMConstInt(i32t, LP_BLD_QUAD_BOTTOM_LEFT, 0);
+ LLVMValueRef a_top = LLVMBuildExtractElement(bld->builder, a, idx_top, "top");
+ LLVMValueRef a_bottom = LLVMBuildExtractElement(bld->builder, a, idx_bottom, "bottom");
+ if (bld->type.floating)
+ return LLVMBuildFSub(bld->builder, a_bottom, a_top, "ddy");
+ else
+ return LLVMBuildSub(bld->builder, a_bottom, a_top, "ddy");
}