int ShCheckVariablesWithinPackingLimits(
int maxVectors, ShVariableInfo* varInfoArray, size_t varInfoArraySize)
{
if (varInfoArraySize == 0)
return 1;
ASSERT(varInfoArray);
TVariableInfoList variables;
for (size_t ii = 0; ii < varInfoArraySize; ++ii)
{
TVariableInfo var(varInfoArray[ii].type, varInfoArray[ii].size);
variables.push_back(var);
}
VariablePacker packer;
return packer.CheckVariablesWithinPackingLimits(maxVectors, variables) ? 1 : 0;
}
TEST(VariablePacking, Pack) {
VariablePacker packer;
TVariableInfoList vars;
const int kMaxRows = 16;
// test no vars.
EXPECT_TRUE(packer.CheckVariablesWithinPackingLimits(kMaxRows, vars));
ShDataType types[] = {
SH_FLOAT_MAT4, // 0
SH_FLOAT_MAT2, // 1
SH_FLOAT_VEC4, // 2
SH_INT_VEC4, // 3
SH_BOOL_VEC4, // 4
SH_FLOAT_MAT3, // 5
SH_FLOAT_VEC3, // 6
SH_INT_VEC3, // 7
SH_BOOL_VEC3, // 8
SH_FLOAT_VEC2, // 9
SH_INT_VEC2, // 10
SH_BOOL_VEC2, // 11
SH_FLOAT, // 12
SH_INT, // 13
SH_BOOL, // 14
SH_SAMPLER_2D, // 15
SH_SAMPLER_CUBE, // 16
SH_SAMPLER_EXTERNAL_OES, // 17
SH_SAMPLER_2D_RECT_ARB, // 18
};
for (size_t tt = 0; tt < sizeof(types) / sizeof(types[0]); ++tt) {
ShDataType type = types[tt];
int num_rows = VariablePacker::GetNumRows(type);
int num_components_per_row = VariablePacker::GetNumComponentsPerRow(type);
// Check 1 of the type.
vars.clear();
vars.push_back(TVariableInfo(type, 1));
EXPECT_TRUE(packer.CheckVariablesWithinPackingLimits(kMaxRows, vars));
// Check exactly the right amount of 1 type as an array.
int num_vars = kMaxRows / num_rows;
vars.clear();
vars.push_back(TVariableInfo(type, num_vars));
EXPECT_TRUE(packer.CheckVariablesWithinPackingLimits(kMaxRows, vars));
// test too many
vars.clear();
vars.push_back(TVariableInfo(type, num_vars + 1));
EXPECT_FALSE(packer.CheckVariablesWithinPackingLimits(kMaxRows, vars));
// Check exactly the right amount of 1 type as individual vars.
num_vars = kMaxRows / num_rows *
((num_components_per_row > 2) ? 1 : (4 / num_components_per_row));
vars.clear();
for (int ii = 0; ii < num_vars; ++ii) {
vars.push_back(TVariableInfo(type, 1));
}
EXPECT_TRUE(packer.CheckVariablesWithinPackingLimits(kMaxRows, vars));
// Check 1 too many.
vars.push_back(TVariableInfo( type, 1));
EXPECT_FALSE(packer.CheckVariablesWithinPackingLimits(kMaxRows, vars));
}
// Test example from GLSL ES 3.0 spec chapter 11.
vars.clear();
vars.push_back(TVariableInfo(SH_FLOAT_VEC4, 1));
vars.push_back(TVariableInfo(SH_FLOAT_MAT3, 1));
vars.push_back(TVariableInfo(SH_FLOAT_MAT3, 1));
vars.push_back(TVariableInfo(SH_FLOAT_VEC2, 6));
vars.push_back(TVariableInfo(SH_FLOAT_VEC2, 4));
vars.push_back(TVariableInfo(SH_FLOAT_VEC2, 1));
vars.push_back(TVariableInfo(SH_FLOAT, 3));
vars.push_back(TVariableInfo(SH_FLOAT, 2));
vars.push_back(TVariableInfo(SH_FLOAT, 1));
EXPECT_TRUE(packer.CheckVariablesWithinPackingLimits(kMaxRows, vars));
}