void canExtractEmptyUniformDeclarationWhenNoUniform()
{
ShaderProgram shaderProgram;
addShader(shaderProgram, Shader::FRAGMENT_SHADER, VALID_FRAGMENT_SHADER_SOURCE);
QVERIFY(shaderProgram.link());
UniformDeclarationVector uniformDeclarationVector;
shaderProgram.extractActive(uniformDeclarationVector);
QVERIFY(uniformDeclarationVector.empty());
}
void canExtractArrayUniformDeclaration()
{
ShaderProgram shaderProgram;
const char* source = \
"uniform vec4 position[];"\
"void main() {"\
" gl_Position = position[0] + position[1] + position[3];"\
"}";
addShader(shaderProgram, Shader::VERTEX_SHADER, source);
QVERIFY(shaderProgram.link());
UniformDeclarationVector uniformDeclarationVector;
shaderProgram.extractActive(uniformDeclarationVector);
QCOMPARE(uniformDeclarationVector.size(), static_cast<size_t>(1));
QCOMPARE(uniformDeclarationVector[0], UniformDeclaration(0, 4, GL_FLOAT_VEC4, "position[0]"));
}
void canExtractMultipleUniformDeclaration()
{
ShaderProgram shaderProgram;
const char* source = \
"uniform vec4 position;"\
"uniform mat4 mvp;"
"void main() {"\
" gl_Position = mvp * position;"\
"}";
addShader(shaderProgram, Shader::VERTEX_SHADER, source);
QVERIFY(shaderProgram.link());
UniformDeclarationVector uniformDeclarationVector;
shaderProgram.extractActive(uniformDeclarationVector);
QCOMPARE(uniformDeclarationVector.size(), static_cast<size_t>(2));
for (unsigned int i = 0; i < uniformDeclarationVector.size(); ++i)
{
UniformDeclaration& uniformDeclaration = uniformDeclarationVector[i];
QCOMPARE(uniformDeclaration.getIndex(), static_cast<GLuint>(i));
if (uniformDeclaration.getName() == "position")
{
QCOMPARE(uniformDeclaration.getSize(), 1);
QCOMPARE(uniformDeclaration.getType(), static_cast<GLenum>(GL_FLOAT_VEC4));
}
else if (uniformDeclaration.getName() == "mvp")
{
QCOMPARE(uniformDeclaration.getSize(), 1);
QCOMPARE(uniformDeclaration.getType(), static_cast<GLenum>(GL_FLOAT_MAT4));
}
else
{
QFAIL("unexpected uniform");
}
}
}
void canExtractStructArrayUniformDeclaration()
{
ShaderProgram shaderProgram;
const char* source = \
"struct MyStruct {"\
" vec4 position1[2];"\
" vec3 position2;"\
"};"\
"uniform MyStruct ms[2];"\
"void main() {"\
" gl_Position = ms[1].position1[1] + vec4(ms[1].position2, 0);"\
"}";
addShader(shaderProgram, Shader::VERTEX_SHADER, source);
QVERIFY(shaderProgram.link());
UniformDeclarationVector uniformDeclarationVector;
shaderProgram.extractActive(uniformDeclarationVector);
QCOMPARE(uniformDeclarationVector.size(), static_cast<size_t>(2));
QCOMPARE(uniformDeclarationVector[0], UniformDeclaration(0, 2, GL_FLOAT_VEC4, "ms[1].position1[0]"));
QCOMPARE(uniformDeclarationVector[1], UniformDeclaration(1, 1, GL_FLOAT_VEC3, "ms[1].position2"));
}