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-rw-r--r--src/gallium/drivers/llvmpipe/lp_test_blend.c110
1 files changed, 90 insertions, 20 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_test_blend.c b/src/gallium/drivers/llvmpipe/lp_test_blend.c
index 1bd1846d384..cf641c1b679 100644
--- a/src/gallium/drivers/llvmpipe/lp_test_blend.c
+++ b/src/gallium/drivers/llvmpipe/lp_test_blend.c
@@ -59,7 +59,27 @@
unsigned verbose = 0;
-typedef void (*blend_test_ptr_t)(const void *src, const void *dst, const void *con, void *res);
+typedef int64_t (*blend_test_ptr_t)(const void *src, const void *dst, const void *con, void *res);
+
+
+static LLVMValueRef
+read_cycle_counter(LLVMBuilderRef builder)
+{
+ const char *name = "llvm.readcyclecounter";
+ LLVMModuleRef module = LLVMGetGlobalParent(LLVMGetBasicBlockParent(LLVMGetInsertBlock(builder)));
+ LLVMValueRef function;
+
+ function = LLVMGetNamedFunction(module, name);
+ if(!function) {
+ LLVMTypeRef type = LLVMInt64Type();
+ function = LLVMAddFunction(module, name, LLVMFunctionType(type, NULL, 0, 0));
+ LLVMSetFunctionCallConv(function, LLVMCCallConv);
+ LLVMSetLinkage(function, LLVMExternalLinkage);
+ }
+ assert(LLVMIsDeclaration(function));
+
+ return LLVMBuildCall(builder, function, NULL, 0, "");
+}
static LLVMValueRef
@@ -67,6 +87,7 @@ add_blend_test(LLVMModuleRef module,
const struct pipe_blend_state *blend,
union lp_type type)
{
+ LLVMTypeRef ret_type;
LLVMTypeRef vec_type;
LLVMTypeRef args[4];
LLVMValueRef func;
@@ -80,11 +101,14 @@ add_blend_test(LLVMModuleRef module,
LLVMValueRef dst;
LLVMValueRef con;
LLVMValueRef res;
+ LLVMValueRef start_counter;
+ LLVMValueRef end_counter;
+ ret_type = LLVMInt64Type();
vec_type = lp_build_vec_type(type);
args[3] = args[2] = args[1] = args[0] = LLVMPointerType(vec_type, 0);
- func = LLVMAddFunction(module, "test", LLVMFunctionType(LLVMVoidType(), args, 4, 0));
+ func = LLVMAddFunction(module, "test", LLVMFunctionType(LLVMInt64Type(), args, 4, 0));
LLVMSetFunctionCallConv(func, LLVMCCallConv);
src_ptr = LLVMGetParam(func, 0);
dst_ptr = LLVMGetParam(func, 1);
@@ -99,13 +123,17 @@ add_blend_test(LLVMModuleRef module,
dst = LLVMBuildLoad(builder, dst_ptr, "dst");
con = LLVMBuildLoad(builder, const_ptr, "const");
+ start_counter = read_cycle_counter(builder);
+
res = lp_build_blend(builder, blend, type, src, dst, con, 3);
LLVMSetValueName(res, "res");
+ end_counter = read_cycle_counter(builder);
+
LLVMBuildStore(builder, res, res_ptr);
- LLVMBuildRetVoid(builder);
+ LLVMBuildRet(builder, LLVMBuildSub(builder, end_counter, start_counter, "cycles"));;
LLVMDisposeBuilder(builder);
return func;
@@ -362,6 +390,8 @@ test_one(const struct pipe_blend_state *blend,
char *error = NULL;
blend_test_ptr_t blend_test_ptr;
boolean success;
+ const unsigned n = 32;
+ int64_t cycles[n];
unsigned i, j, k;
module = LLVMModuleCreateWithName("test");
@@ -402,7 +432,7 @@ test_one(const struct pipe_blend_state *blend,
LLVMDumpModule(module);
success = TRUE;
- for(i = 0; i < 10; ++i) {
+ for(i = 0; i < n && success; ++i) {
if(type.floating && type.width == 32) {
float src[LP_MAX_VECTOR_LENGTH];
float dst[LP_MAX_VECTOR_LENGTH];
@@ -419,14 +449,14 @@ test_one(const struct pipe_blend_state *blend,
for(j = 0; j < type.length; j += 4)
compute_blend_ref(blend, src + j, dst + j, con + j, ref + j);
- blend_test_ptr(src, dst, con, res);
+ cycles[i] = blend_test_ptr(src, dst, con, res);
for(j = 0; j < type.length; ++j)
if(fabs(res[j] - ref[j]) > FLT_EPSILON)
success = FALSE;
if (!success) {
- fprintf(stderr, "FAILED\n");
+ fprintf(stderr, "MISMATCH\n");
fprintf(stderr, " Result: ");
for(j = 0; j < type.length; ++j)
fprintf(stderr, " %f", res[j]);
@@ -468,7 +498,7 @@ test_one(const struct pipe_blend_state *blend,
ref[j + k] = (uint8_t)(reff[k]*255.0f + 0.5f);
}
- blend_test_ptr(src, dst, con, res);
+ cycles[i] = blend_test_ptr(src, dst, con, res);
for(j = 0; j < type.length; ++j) {
int delta = (int)res[j] - (int)ref[j];
@@ -479,7 +509,7 @@ test_one(const struct pipe_blend_state *blend,
}
if (!success) {
- fprintf(stderr, "FAILED\n");
+ fprintf(stderr, "MISMATCH\n");
fprintf(stderr, " Result: ");
for(j = 0; j < type.length; ++j)
fprintf(stderr, " %3u", res[j]);
@@ -492,14 +522,50 @@ test_one(const struct pipe_blend_state *blend,
}
else
assert(0);
+ }
- if (!success) {
- LLVMDumpModule(module);
- LLVMWriteBitcodeToFile(module, "blend.bc");
- fprintf(stderr, "blend.bc written\n");
- abort();
- break;
+ /*
+ * Unfortunately the output of cycle counter is not very reliable as it comes
+ * -- sometimes we get outliers (due IRQs perhaps?) which are
+ * better removed to avoid random or biased data.
+ */
+ if(verbose >=1 && success) {
+ double sum = 0.0, sum2 = 0.0;
+ double avg, std;
+ unsigned m;
+
+ for(i = 0; i < n; ++i) {
+ sum += cycles[i];
+ sum2 += cycles[i]*cycles[i];
}
+
+ avg = sum/n;
+ std = sqrtf((sum2 - n*avg*avg)/n);
+
+ m = 0;
+ sum = 0.0;
+ for(i = 0; i < n; ++i) {
+ if(fabs(cycles[i] - avg) <= 4.0*std) {
+ sum += cycles[i];
+ ++m;
+ }
+ }
+
+ avg = sum/m;
+
+ fprintf(stdout, " cycles=%.1f", avg);
+ }
+
+ if(verbose >= 1) {
+ fprintf(stdout, " result=%s\n", success ? "pass" : "fail");
+ fflush(stdout);
+ }
+
+ if (!success) {
+ LLVMDumpModule(module);
+ LLVMWriteBitcodeToFile(module, "blend.bc");
+ fprintf(stderr, "blend.bc written\n");
+ abort();
}
LLVMFreeMachineCodeForFunction(engine, func);
@@ -594,15 +660,17 @@ test_all(void)
alpha_dst_factor->value == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE)
continue;
- if(verbose >= 1)
- fprintf(stderr,
- "%s=%s %s=%s %s=%s %s=%s %s=%s %s=%s ...\n",
+ if(verbose >= 1) {
+ fprintf(stdout,
+ "%s=%s %s=%s %s=%s %s=%s %s=%s %s=%s",
"rgb_func", rgb_func->name,
"rgb_src_factor", rgb_src_factor->name,
"rgb_dst_factor", rgb_dst_factor->name,
"alpha_func", alpha_func->name,
"alpha_src_factor", alpha_src_factor->name,
"alpha_dst_factor", alpha_dst_factor->name);
+ fflush(stdout);
+ }
memset(&blend, 0, sizeof blend);
blend.blend_enable = 1;
@@ -658,15 +726,17 @@ test_some(unsigned long n)
for(type = blend_types; type < &blend_types[num_types]; ++type) {
- if(verbose >= 1)
- fprintf(stderr,
- "%s=%s %s=%s %s=%s %s=%s %s=%s %s=%s ...\n",
+ if(verbose >= 1) {
+ fprintf(stdout,
+ "%s=%s %s=%s %s=%s %s=%s %s=%s %s=%s",
"rgb_func", rgb_func->name,
"rgb_src_factor", rgb_src_factor->name,
"rgb_dst_factor", rgb_dst_factor->name,
"alpha_func", alpha_func->name,
"alpha_src_factor", alpha_src_factor->name,
"alpha_dst_factor", alpha_dst_factor->name);
+ fflush(stdout);
+ }
memset(&blend, 0, sizeof blend);
blend.blend_enable = 1;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 02:09:33 +0000