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//
// Copyright 2018 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// RenderbufferMultisampleTest: Tests of multisampled renderbuffer
#include "test_utils/ANGLETest.h"
#include "test_utils/gl_raii.h"
using namespace angle;
namespace
{
class RenderbufferMultisampleTest : public ANGLETest
{
protected:
RenderbufferMultisampleTest()
{
setWindowWidth(64);
setWindowHeight(64);
setConfigRedBits(8);
setConfigGreenBits(8);
setConfigBlueBits(8);
setConfigAlphaBits(8);
}
void testSetUp() override
{
glGenRenderbuffers(1, &mRenderbuffer);
ASSERT_GL_NO_ERROR();
}
void testTearDown() override
{
glDeleteRenderbuffers(1, &mRenderbuffer);
mRenderbuffer = 0;
}
GLuint mRenderbuffer = 0;
};
// In GLES 3.0, if internalformat is integer (signed or unsigned), to allocate multisample
// renderbuffer storage for that internalformat is not supported. An INVALID_OPERATION is
// generated. In GLES 3.1, it is OK to allocate multisample renderbuffer storage for interger
// internalformat, but the max samples should be less than MAX_INTEGER_SAMPLES.
// MAX_INTEGER_SAMPLES should be at least 1.
TEST_P(RenderbufferMultisampleTest, IntegerInternalformat)
{
glBindRenderbuffer(GL_RENDERBUFFER, mRenderbuffer);
glRenderbufferStorageMultisample(GL_RENDERBUFFER, 1, GL_RGBA8I, 64, 64);
if (getClientMajorVersion() < 3 || getClientMinorVersion() < 1)
{
ASSERT_GL_ERROR(GL_INVALID_OPERATION);
}
else
{
ASSERT_GL_NO_ERROR();
GLint maxSamplesRGBA8I = 0;
glGetInternalformativ(GL_RENDERBUFFER, GL_RGBA8I, GL_SAMPLES, 1, &maxSamplesRGBA8I);
GLint maxIntegerSamples = 0;
glGetIntegerv(GL_MAX_INTEGER_SAMPLES, &maxIntegerSamples);
ASSERT_GL_NO_ERROR();
EXPECT_GE(maxIntegerSamples, 1);
glRenderbufferStorageMultisample(GL_RENDERBUFFER, maxSamplesRGBA8I + 1, GL_RGBA8I, 64, 64);
ASSERT_GL_ERROR(GL_INVALID_OPERATION);
glRenderbufferStorageMultisample(GL_RENDERBUFFER, maxIntegerSamples + 1, GL_RGBA8I, 64, 64);
ASSERT_GL_ERROR(GL_INVALID_OPERATION);
}
}
ANGLE_INSTANTIATE_TEST(RenderbufferMultisampleTest,
ES3_D3D11(),
ES3_OPENGL(),
ES3_OPENGLES(),
ES31_D3D11(),
ES31_OPENGL(),
ES31_OPENGLES());
} // namespace