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draw llvm: fix iteration for larger vertex arrays

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we were trying to store the outputs starting at the same offset we
were using for the input arrays, which was writing beyond the end of
the output array.
This commit is contained in:
Zack Rusin
2010-04-06 12:37:31 -04:00
parent de0647dbad
commit 1e0bf24139
1 changed files with 8 additions and 8 deletions
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src/gallium/auxiliary/draw/draw_llvm.c
+8 -8
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@@ -17,7 +17,7 @@
#include <llvm-c/Transforms/Scalar.h>
#define DEBUG_STORE 0
#define DEBUG_STORE 1
static void
init_globals(struct draw_llvm *llvm)
@@ -481,7 +481,7 @@ store_aos_array(LLVMBuilderRef builder,
&ind3, 1, "");
#if DEBUG_STORE
lp_build_printf(builder, "io = %p, indexes[%d, %d, %d, %d]\n",
lp_build_printf(builder, " io = %p, indexes[%d, %d, %d, %d]\n",
io_ptr, ind0, ind1, ind2, ind3);
#endif
@@ -592,7 +592,6 @@ draw_llvm_generate(struct draw_llvm *llvm)
step = LLVMConstInt(LLVMInt32Type(), max_vertices, 0);
io_itr = LLVMConstInt(LLVMInt32Type(), 0, 0);
#if DEBUG_STORE
lp_build_printf(builder, "start = %d, end = %d, step = %d\n",
start, end, step);
@@ -601,11 +600,14 @@ draw_llvm_generate(struct draw_llvm *llvm)
{
LLVMValueRef inputs[PIPE_MAX_SHADER_INPUTS][NUM_CHANNELS];
LLVMValueRef aos_attribs[PIPE_MAX_SHADER_INPUTS][NUM_CHANNELS];
LLVMValueRef io = LLVMBuildGEP(builder, io_ptr, &io_itr, 1, "");
LLVMValueRef io;
const LLVMValueRef (*ptr_aos)[NUM_CHANNELS];
io_itr = LLVMBuildSub(builder, lp_loop.counter, start, "");
io = LLVMBuildGEP(builder, io_ptr, &io_itr, 1, "");
#if DEBUG_STORE
lp_build_printf(builder, " --- loop counter %d\n",
lp_loop.counter);
lp_build_printf(builder, " --- io %d = %p, loop counter %d\n",
io_itr, io, lp_loop.counter);
#endif
for (i = 0; i < NUM_CHANNELS; ++i) {
LLVMValueRef true_index = LLVMBuildAdd(
@@ -633,8 +635,6 @@ draw_llvm_generate(struct draw_llvm *llvm)
convert_to_aos(builder, io, outputs,
draw->vs.vertex_shader->info.num_outputs,
max_vertices);
io_itr = LLVMBuildAdd(builder, io_itr, step, "");
}
lp_build_loop_end_cond(builder, end, step, LLVMIntUGE, &lp_loop);