#include <string>
#include <sstream>
#include <utility>
+#include <stack>
namespace vkt
{
string generateConstantDefinitions (int count)
{
- std::stringstream r;
+ std::ostringstream r;
for (int i = 0; i < count; i++)
r << "%cf" << (i * 10 + 5) << " = OpConstant %f32 " <<(i * 10 + 5) << ".0\n";
- return r.str() + string("\n");
+ r << "\n";
+ return r.str();
}
string generateSwitchCases (int count)
{
- std::stringstream r;
+ std::ostringstream r;
for (int i = 0; i < count; i++)
r << " " << i << " %case" << i;
- return r.str() + string("\n");
+ r << "\n";
+ return r.str();
}
string generateSwitchTargets (int count)
{
- std::stringstream r;
+ std::ostringstream r;
for (int i = 0; i < count; i++)
r << "%case" << i << " = OpLabel\n OpBranch %phi\n";
- return r.str() + string("\n");
+ r << "\n";
+ return r.str();
}
string generateOpPhiParams (int count)
{
- std::stringstream r;
+ std::ostringstream r;
for (int i = 0; i < count; i++)
r << " %cf" << (i * 10 + 5) << " %case" << i;
- return r.str() + string("\n");
+ r << "\n";
+ return r.str();
}
string generateIntWidth (int value)
{
- std::stringstream r;
+ std::ostringstream r;
r << value;
return r.str();
}
+// Expand input string by injecting "ABC" between the input
+// string characters. The acc/add/treshold parameters are used
+// to skip some of the injections to make the result less
+// uniform (and a lot shorter).
+string expandOpPhiCase5 (const string& s, int &acc, int add, int treshold)
+{
+ std::ostringstream res;
+ const char* p = s.c_str();
+
+ while (*p)
+ {
+ res << *p;
+ acc += add;
+ if (acc > treshold)
+ {
+ acc -= treshold;
+ res << "ABC";
+ }
+ p++;
+ }
+ return res.str();
+}
+
+// Calculate expected result based on the code string
+float calcOpPhiCase5 (float val, const string& s)
+{
+ const char* p = s.c_str();
+ float x[8];
+ bool b[8];
+ const float tv[8] = { 0.5f, 1.5f, 3.5f, 7.5f, 15.5f, 31.5f, 63.5f, 127.5f };
+ const float v = deFloatAbs(val);
+ float res = 0;
+ int depth = -1;
+ int skip = 0;
+
+ for (int i = 7; i >= 0; --i)
+ x[i] = std::fmod((float)v, (float)(2 << i));
+ for (int i = 7; i >= 0; --i)
+ b[i] = x[i] > tv[i];
+
+ while (*p)
+ {
+ if (*p == 'A')
+ {
+ depth++;
+ if (skip == 0 && b[depth])
+ {
+ res++;
+ }
+ else
+ skip++;
+ }
+ if (*p == 'B')
+ {
+ if (skip)
+ skip--;
+ if (b[depth] || skip)
+ skip++;
+ }
+ if (*p == 'C')
+ {
+ depth--;
+ if (skip)
+ skip--;
+ }
+ p++;
+ }
+ return res;
+}
+
+// In the code string, the letters represent the following:
+//
+// A:
+// if (certain bit is set)
+// {
+// result++;
+//
+// B:
+// } else {
+//
+// C:
+// }
+//
+// examples:
+// AABCBC leads to if(){r++;if(){r++;}else{}}else{}
+// ABABCC leads to if(){r++;}else{if(){r++;}else{}}
+// ABCABC leads to if(){r++;}else{}if(){r++;}else{}
+//
+// Code generation gets a bit complicated due to the else-branches,
+// which do not generate new values. Thus, the generator needs to
+// keep track of the previous variable change seen by the else
+// branch.
+string generateOpPhiCase5 (const string& s)
+{
+ std::stack<int> idStack;
+ std::stack<std::string> value;
+ std::stack<std::string> valueLabel;
+ std::stack<std::string> mergeLeft;
+ std::stack<std::string> mergeRight;
+ std::ostringstream res;
+ const char* p = s.c_str();
+ int depth = -1;
+ int currId = 0;
+ int iter = 0;
+
+ idStack.push(-1);
+ value.push("%f32_0");
+ valueLabel.push("%f32_0 %entry");
+
+ while (*p)
+ {
+ if (*p == 'A')
+ {
+ depth++;
+ currId = iter;
+ idStack.push(currId);
+ res << "\tOpSelectionMerge %m" << currId << " None\n";
+ res << "\tOpBranchConditional %b" << depth << " %t" << currId << " %f" << currId << "\n";
+ res << "%t" << currId << " = OpLabel\n";
+ res << "%rt" << currId << " = OpFAdd %f32 " << value.top() << " %f32_1\n";
+ std::ostringstream tag;
+ tag << "%rt" << currId;
+ value.push(tag.str());
+ tag << " %t" << currId;
+ valueLabel.push(tag.str());
+ }
+
+ if (*p == 'B')
+ {
+ mergeLeft.push(valueLabel.top());
+ value.pop();
+ valueLabel.pop();
+ res << "\tOpBranch %m" << currId << "\n";
+ res << "%f" << currId << " = OpLabel\n";
+ std::ostringstream tag;
+ tag << value.top() << " %f" << currId;
+ valueLabel.pop();
+ valueLabel.push(tag.str());
+ }
+
+ if (*p == 'C')
+ {
+ mergeRight.push(valueLabel.top());
+ res << "\tOpBranch %m" << currId << "\n";
+ res << "%m" << currId << " = OpLabel\n";
+ if (*(p + 1) == 0)
+ res << "%res"; // last result goes to %res
+ else
+ res << "%rm" << currId;
+ res << " = OpPhi %f32 " << mergeLeft.top() << " " << mergeRight.top() << "\n";
+ std::ostringstream tag;
+ tag << "%rm" << currId;
+ value.pop();
+ value.push(tag.str());
+ tag << " %m" << currId;
+ valueLabel.pop();
+ valueLabel.push(tag.str());
+ mergeLeft.pop();
+ mergeRight.pop();
+ depth--;
+ idStack.pop();
+ currId = idStack.top();
+ }
+ p++;
+ iter++;
+ }
+ return res.str();
+}
+
tcu::TestCaseGroup* createOpPhiGroup (tcu::TestContext& testCtx)
{
de::MovePtr<tcu::TestCaseGroup> group (new tcu::TestCaseGroup(testCtx, "opphi", "Test the OpPhi instruction"));
ComputeShaderSpec spec2;
ComputeShaderSpec spec3;
ComputeShaderSpec spec4;
+ ComputeShaderSpec spec5;
de::Random rnd (deStringHash(group->getName()));
const int numElements = 100;
vector<float> inputFloats (numElements, 0);
vector<float> outputFloats2 (numElements, 0);
vector<float> outputFloats3 (numElements, 0);
vector<float> outputFloats4 (numElements, 0);
+ vector<float> outputFloats5 (numElements, 0);
+ std::string codestring = "ABC";
const int test4Width = 1024;
+ // Build case 5 code string. Each iteration makes the hierarchy more complicated.
+ // 9 iterations with (7, 24) parameters makes the hierarchy 8 deep with about 1500 lines of
+ // shader code.
+ for (int i = 0, acc = 0; i < 9; i++)
+ codestring = expandOpPhiCase5(codestring, acc, 7, 24);
+
fillRandomScalars(rnd, -300.f, 300.f, &inputFloats[0], numElements);
// CPU might not use the same rounding mode as the GPU. Use whole numbers to avoid rounding differences.
int index4 = (int)deFloor(deAbs((float)ndx * inputFloats[ndx]));
outputFloats4[ndx] = (float)(index4 % test4Width) * 10.0f + 5.0f;
+
+ outputFloats5[ndx] = calcOpPhiCase5(inputFloats[ndx], codestring);
}
spec1.assembly =
group->addChild(new SpvAsmComputeShaderCase(testCtx, "wide", "OpPhi with a lot of parameters", spec4));
+ spec5.assembly =
+ "OpCapability Shader\n"
+ "%ext = OpExtInstImport \"GLSL.std.450\"\n"
+ "OpMemoryModel Logical GLSL450\n"
+ "OpEntryPoint GLCompute %main \"main\" %id\n"
+ "OpExecutionMode %main LocalSize 1 1 1\n"
+ "%code = OpString \"" + codestring + "\"\n"
+
+ "OpSource GLSL 430\n"
+ "OpName %main \"main\"\n"
+ "OpName %id \"gl_GlobalInvocationID\"\n"
+
+ "OpDecorate %id BuiltIn GlobalInvocationId\n"
+
+ + string(getComputeAsmInputOutputBufferTraits()) + string(getComputeAsmCommonTypes()) + string(getComputeAsmInputOutputBuffer()) +
+
+ "%id = OpVariable %uvec3ptr Input\n"
+ "%zero = OpConstant %i32 0\n"
+ "%f32_0 = OpConstant %f32 0.0\n"
+ "%f32_0_5 = OpConstant %f32 0.5\n"
+ "%f32_1 = OpConstant %f32 1.0\n"
+ "%f32_1_5 = OpConstant %f32 1.5\n"
+ "%f32_2 = OpConstant %f32 2.0\n"
+ "%f32_3_5 = OpConstant %f32 3.5\n"
+ "%f32_4 = OpConstant %f32 4.0\n"
+ "%f32_7_5 = OpConstant %f32 7.5\n"
+ "%f32_8 = OpConstant %f32 8.0\n"
+ "%f32_15_5 = OpConstant %f32 15.5\n"
+ "%f32_16 = OpConstant %f32 16.0\n"
+ "%f32_31_5 = OpConstant %f32 31.5\n"
+ "%f32_32 = OpConstant %f32 32.0\n"
+ "%f32_63_5 = OpConstant %f32 63.5\n"
+ "%f32_64 = OpConstant %f32 64.0\n"
+ "%f32_127_5 = OpConstant %f32 127.5\n"
+ "%f32_128 = OpConstant %f32 128.0\n"
+ "%f32_256 = OpConstant %f32 256.0\n"
+
+ "%main = OpFunction %void None %voidf\n"
+ "%entry = OpLabel\n"
+ "%idval = OpLoad %uvec3 %id\n"
+ "%x = OpCompositeExtract %u32 %idval 0\n"
+ "%inloc = OpAccessChain %f32ptr %indata %zero %x\n"
+ "%inval = OpLoad %f32 %inloc\n"
+
+ "%xabs = OpExtInst %f32 %ext FAbs %inval\n"
+ "%x8 = OpFMod %f32 %xabs %f32_256\n"
+ "%x7 = OpFMod %f32 %xabs %f32_128\n"
+ "%x6 = OpFMod %f32 %xabs %f32_64\n"
+ "%x5 = OpFMod %f32 %xabs %f32_32\n"
+ "%x4 = OpFMod %f32 %xabs %f32_16\n"
+ "%x3 = OpFMod %f32 %xabs %f32_8\n"
+ "%x2 = OpFMod %f32 %xabs %f32_4\n"
+ "%x1 = OpFMod %f32 %xabs %f32_2\n"
+
+ "%b7 = OpFOrdGreaterThanEqual %bool %x8 %f32_127_5\n"
+ "%b6 = OpFOrdGreaterThanEqual %bool %x7 %f32_63_5\n"
+ "%b5 = OpFOrdGreaterThanEqual %bool %x6 %f32_31_5\n"
+ "%b4 = OpFOrdGreaterThanEqual %bool %x5 %f32_15_5\n"
+ "%b3 = OpFOrdGreaterThanEqual %bool %x4 %f32_7_5\n"
+ "%b2 = OpFOrdGreaterThanEqual %bool %x3 %f32_3_5\n"
+ "%b1 = OpFOrdGreaterThanEqual %bool %x2 %f32_1_5\n"
+ "%b0 = OpFOrdGreaterThanEqual %bool %x1 %f32_0_5\n"
+
+ + generateOpPhiCase5(codestring) +
+
+ "%outloc = OpAccessChain %f32ptr %outdata %zero %x\n"
+ " OpStore %outloc %res\n"
+ " OpReturn\n"
+
+ " OpFunctionEnd\n";
+ spec5.inputs.push_back(BufferSp(new Float32Buffer(inputFloats)));
+ spec5.outputs.push_back(BufferSp(new Float32Buffer(outputFloats5)));
+ spec5.numWorkGroups = IVec3(numElements, 1, 1);
+
+ group->addChild(new SpvAsmComputeShaderCase(testCtx, "nested", "Stress OpPhi with a lot of nesting", spec5));
+
return group.release();
}
projects / platform / upstream / VK-GL-CTS.git / commitdiff