modules/gles31/functional/es31fFboColorbufferTests.cpp - third_party/vulkan-cts - Git at Google

 /*-------------------------------------------------------------------------
  * drawElements Quality Program OpenGL ES 3.1 Module
  * -------------------------------------------------
  *
  * Copyright 2014 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  *//*!
  * \file
  * \brief FBO colorbuffer tests.
  *//*--------------------------------------------------------------------*/

 #include "es31fFboColorbufferTests.hpp"
 #include "es31fFboTestCase.hpp"
 #include "es31fFboTestUtil.hpp"

 #include "gluTextureUtil.hpp"
 #include "gluContextInfo.hpp"

 #include "tcuCommandLine.hpp"
 #include "tcuImageCompare.hpp"
 #include "tcuRGBA.hpp"
 #include "tcuTestLog.hpp"
 #include "tcuTextureUtil.hpp"

 #include "sglrContextUtil.hpp"

 #include "deRandom.hpp"
 #include "deString.h"

 #include "glwEnums.hpp"

 namespace deqp
 {
 namespace gles31
 {
 namespace Functional
 {

 using std::string;
 using tcu::Vec2;
 using tcu::Vec3;
 using tcu::Vec4;
 using tcu::IVec2;
 using tcu::IVec3;
 using tcu::IVec4;
 using tcu::UVec4;
 using tcu::TestLog;
 using namespace FboTestUtil;

 const tcu::RGBA MIN_THRESHOLD(12, 12, 12, 12);

 static tcu::Vec4 generateRandomColor (de::Random& random)
 {
 	tcu::Vec4 retVal;

 	retVal[0] = random.getFloat();
 	retVal[1] = random.getFloat();
 	retVal[2] = random.getFloat();
 	retVal[3] = 1.0f;

 	return retVal;
 }

 static tcu::CubeFace getCubeFaceFromNdx (int ndx)
 {
 	switch (ndx)
 	{
 		case 0:	return tcu::CUBEFACE_POSITIVE_X;
 		case 1:	return tcu::CUBEFACE_NEGATIVE_X;
 		case 2:	return tcu::CUBEFACE_POSITIVE_Y;
 		case 3:	return tcu::CUBEFACE_NEGATIVE_Y;
 		case 4:	return tcu::CUBEFACE_POSITIVE_Z;
 		case 5:	return tcu::CUBEFACE_NEGATIVE_Z;
 		default:
 			DE_ASSERT(false);
 			return tcu::CUBEFACE_LAST;
 	}
 }

 class FboColorbufferCase : public FboTestCase
 {
 public:
 	FboColorbufferCase (Context& context, const char* name, const char* desc, const deUint32 format)
 		: FboTestCase	(context, name, desc)
 		, m_format		(format)
 	{
 	}

 	bool compare (const tcu::Surface& reference, const tcu::Surface& result)
 	{
 		const tcu::RGBA threshold (tcu::max(getFormatThreshold(m_format), MIN_THRESHOLD));

 		m_testCtx.getLog() << TestLog::Message << "Comparing images, threshold: " << threshold << TestLog::EndMessage;

 		return tcu::bilinearCompare(m_testCtx.getLog(), "Result", "Image comparison result", reference.getAccess(), result.getAccess(), threshold, tcu::COMPARE_LOG_RESULT);
 	}

 protected:
 	const deUint32	m_format;
 };

 class FboColorTex2DCase : public FboColorbufferCase
 {
 	public:
 		FboColorTex2DCase (Context& context, const char* name, const char* description, deUint32 texFmt, const IVec2& texSize)
 			: FboColorbufferCase	(context, name, description, texFmt)
 			, m_texFmt				(texFmt)
 			, m_texSize				(texSize)
 	{
 	}

 	protected:
 		void preCheck (void)
 		{
 			checkFormatSupport(m_texFmt);
 		}

 		void render (tcu::Surface& dst)
 		{
 			tcu::TextureFormat		texFmt		= glu::mapGLInternalFormat(m_texFmt);
 			tcu::TextureFormatInfo	fmtInfo		= tcu::getTextureFormatInfo(texFmt);

 			Texture2DShader			texToFboShader	(DataTypes() << glu::TYPE_SAMPLER_2D, getFragmentOutputType(texFmt), fmtInfo.valueMax-fmtInfo.valueMin, fmtInfo.valueMin);
 			deUint32				texToFboShaderID = getCurrentContext()->createProgram(&texToFboShader);
 			deUint32				fbo;
 			deUint32				tex;

 			// Setup shader
 			texToFboShader.setUniforms(*getCurrentContext(), texToFboShaderID);

 			//  Generate fbo
 			{
 				glu::TransferFormat	transferFmt	= glu::getTransferFormat(texFmt);
 				deUint32			format		= m_texFmt;
 				const IVec2&		size		= m_texSize;

 				glGenFramebuffers(1, &fbo);
 				glGenTextures(1, &tex);

 				glBindTexture(GL_TEXTURE_2D, tex);
 				glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 				glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 				glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 				glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 				glTexImage2D(GL_TEXTURE_2D, 0, format, size.x(), size.y(), 0, transferFmt.format, transferFmt.dataType, DE_NULL);

 				glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 				glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex, 0);
 				checkError();
 				checkFramebufferStatus(GL_FRAMEBUFFER);
 			}

 			// Render texture to fbo
 			{
 				const deUint32		format		= GL_RGBA;
 				const deUint32		dataType	= GL_UNSIGNED_BYTE;
 				const int			texW		= 128;
 				const int			texH		= 128;
 				deUint32			tmpTex		= 0;
 				const IVec2&		viewport	= m_texSize;
 				tcu::TextureLevel	data		(glu::mapGLTransferFormat(format, dataType), texW, texH, 1);

 				tcu::fillWithComponentGradients(data.getAccess(), Vec4(0.0f), Vec4(1.0f));

 				glGenTextures(1, &tmpTex);
 				glBindTexture(GL_TEXTURE_2D, tmpTex);
 				glTexParameteri(GL_TEXTURE_2D,	GL_TEXTURE_WRAP_S,		GL_CLAMP_TO_EDGE);
 				glTexParameteri(GL_TEXTURE_2D,	GL_TEXTURE_WRAP_T,		GL_CLAMP_TO_EDGE);
 				glTexParameteri(GL_TEXTURE_2D,	GL_TEXTURE_MIN_FILTER,	GL_LINEAR);
 				glTexParameteri(GL_TEXTURE_2D,	GL_TEXTURE_MAG_FILTER,	GL_LINEAR);
 				glTexImage2D(GL_TEXTURE_2D, 0, format, texW, texH, 0, format, dataType, data.getAccess().getDataPtr());

 				glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 				glViewport(0, 0, viewport.x(), viewport.y());
 				sglr::drawQuad(*getCurrentContext(), texToFboShaderID, Vec3(-1.0f, -1.0f, 0.0f), Vec3(1.0f, 1.0f, 0.0f));
 			}

 			readPixels(dst, 0, 0, getWidth(), getHeight(), texFmt, fmtInfo.lookupScale, fmtInfo.lookupBias);
 			checkError();
 		}

 	private:
 		deUint32	m_texFmt;
 		IVec2		m_texSize;
 };

 class FboColorTexCubeArrayCase : public FboColorbufferCase
 {
 public:
 	FboColorTexCubeArrayCase (Context& context, const char* name, const char* description, deUint32 texFmt, const IVec3& texSize)
 		: FboColorbufferCase	(context, name, description, texFmt)
 		, m_texSize				(texSize)
 	{
 		DE_ASSERT(texSize.z() % 6 == 0);
 	}

 protected:
 	void preCheck (void)
 	{
 		if (!glu::contextSupports(m_context.getRenderContext().getType(), glu::ApiType::es(3, 2)) && !m_context.getContextInfo().isExtensionSupported("GL_EXT_texture_cube_map_array"))
 			TCU_THROW(NotSupportedError, "Test requires extension GL_EXT_texture_cube_map_array or a context version equal or higher than 3.2");

 		checkFormatSupport(m_format);
 	}

 	void render (tcu::Surface& dst)
 	{
 		TestLog&				log					= m_testCtx.getLog();
 		de::Random				rnd					(deStringHash(getName()) ^ 0xed607a89 ^ m_testCtx.getCommandLine().getBaseSeed());
 		tcu::TextureFormat		texFmt				= glu::mapGLInternalFormat(m_format);
 		tcu::TextureFormatInfo	fmtInfo				= tcu::getTextureFormatInfo(texFmt);

 		Texture2DShader			texToFboShader		(DataTypes() << glu::TYPE_SAMPLER_2D, getFragmentOutputType(texFmt), fmtInfo.valueMax-fmtInfo.valueMin, fmtInfo.valueMin);
 		TextureCubeArrayShader	arrayTexShader		(glu::getSamplerCubeArrayType(texFmt), glu::TYPE_FLOAT_VEC4, glu::getContextTypeGLSLVersion(m_context.getRenderContext().getType()));

 		deUint32				texToFboShaderID	= getCurrentContext()->createProgram(&texToFboShader);
 		deUint32				arrayTexShaderID	= getCurrentContext()->createProgram(&arrayTexShader);

 		// Setup textures
 		texToFboShader.setUniforms(*getCurrentContext(), texToFboShaderID);
 		arrayTexShader.setTexScaleBias(fmtInfo.lookupScale, fmtInfo.lookupBias);

 		// Framebuffers.
 		std::vector<deUint32>	fbos;
 		deUint32				tex;

 		{
 			glu::TransferFormat	transferFmt		= glu::getTransferFormat(texFmt);
 			bool				isFilterable	= glu::isGLInternalColorFormatFilterable(m_format);
 			const IVec3&		size			= m_texSize;

 			log << TestLog::Message
 				<< "Creating a cube map array texture ("
 				<< size.x() << "x" << size.y()
 				<< ", depth: "
 				<< size.z() << ")"
 				<< TestLog::EndMessage;

 			glGenTextures(1, &tex);

 			glBindTexture(GL_TEXTURE_CUBE_MAP_ARRAY, tex);
 			glTexParameteri(GL_TEXTURE_CUBE_MAP_ARRAY,	GL_TEXTURE_WRAP_S,		GL_CLAMP_TO_EDGE);
 			glTexParameteri(GL_TEXTURE_CUBE_MAP_ARRAY,	GL_TEXTURE_WRAP_T,		GL_CLAMP_TO_EDGE);
 			glTexParameteri(GL_TEXTURE_CUBE_MAP_ARRAY,	GL_TEXTURE_WRAP_R,		GL_CLAMP_TO_EDGE);
 			glTexParameteri(GL_TEXTURE_CUBE_MAP_ARRAY,	GL_TEXTURE_MIN_FILTER,	isFilterable ? GL_LINEAR : GL_NEAREST);
 			glTexParameteri(GL_TEXTURE_CUBE_MAP_ARRAY,	GL_TEXTURE_MAG_FILTER,	isFilterable ? GL_LINEAR : GL_NEAREST);
 			glTexImage3D(GL_TEXTURE_CUBE_MAP_ARRAY, 0, m_format, size.x(), size.y(), size.z(), 0, transferFmt.format, transferFmt.dataType, DE_NULL);

 			log << TestLog::Message << "Creating a framebuffer object for each layer-face" << TestLog::EndMessage;

 			// Generate an FBO for each layer-face
 			for (int ndx = 0; ndx < m_texSize.z(); ndx++)
 			{
 				deUint32 layerFbo;

 				glGenFramebuffers(1, &layerFbo);
 				glBindFramebuffer(GL_FRAMEBUFFER, layerFbo);
 				glFramebufferTextureLayer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, tex, 0, ndx);
 				checkError();
 				checkFramebufferStatus(GL_FRAMEBUFFER);

 				fbos.push_back(layerFbo);
 			}
 		}

 		log << TestLog::Message << "Rendering test images to layer-faces in randomized order" << TestLog::EndMessage;

 		{
 			std::vector<int> order(fbos.size());

 			for (size_t n = 0; n < order.size(); n++)
 				order[n] = (int)n;
 			rnd.shuffle(order.begin(), order.end());

 			for (size_t ndx = 0; ndx < order.size(); ndx++)
 			{
 				const int			layerFace	= order[ndx];
 				const deUint32		format		= GL_RGBA;
 				const deUint32		dataType	= GL_UNSIGNED_BYTE;
 				const int			texW		= 128;
 				const int			texH		= 128;
 				deUint32			tmpTex		= 0;
 				const deUint32		fbo			= fbos[layerFace];
 				const IVec3&		viewport	= m_texSize;
 				tcu::TextureLevel	data		(glu::mapGLTransferFormat(format, dataType), texW, texH, 1);

 				tcu::fillWithGrid(data.getAccess(), 8, generateRandomColor(rnd), Vec4(0.0f));

 				glGenTextures(1, &tmpTex);
 				glBindTexture(GL_TEXTURE_2D, tmpTex);
 				glTexParameteri(GL_TEXTURE_2D,	GL_TEXTURE_WRAP_S,		GL_CLAMP_TO_EDGE);
 				glTexParameteri(GL_TEXTURE_2D,	GL_TEXTURE_WRAP_T,		GL_CLAMP_TO_EDGE);
 				glTexParameteri(GL_TEXTURE_2D,	GL_TEXTURE_MIN_FILTER,	GL_LINEAR);
 				glTexParameteri(GL_TEXTURE_2D,	GL_TEXTURE_MAG_FILTER,	GL_LINEAR);
 				glTexImage2D(GL_TEXTURE_2D, 0, format, texW, texH, 0, format, dataType, data.getAccess().getDataPtr());

 				glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 				glViewport(0, 0, viewport.x(), viewport.y());
 				sglr::drawQuad(*getCurrentContext(), texToFboShaderID, Vec3(-1.0f, -1.0f, 0.0f), Vec3(1.0f, 1.0f, 0.0f));
 				checkError();

 				// Render to framebuffer
 				{
 					const Vec3			p0		= Vec3(float(ndx % 2) - 1.0f, float(ndx / 2) - 1.0f, 0.0f);
 					const Vec3			p1		= p0 + Vec3(1.0f, 1.0f, 0.0f);
 					const int			layer	= layerFace / 6;
 					const tcu::CubeFace	face	= getCubeFaceFromNdx(layerFace % 6);

 					glBindFramebuffer(GL_FRAMEBUFFER, 0);
 					glViewport(0, 0, getWidth(), getHeight());

 					glActiveTexture(GL_TEXTURE0);
 					glBindTexture(GL_TEXTURE_CUBE_MAP_ARRAY, tex);

 					arrayTexShader.setLayer(layer);
 					arrayTexShader.setFace(face);
 					arrayTexShader.setUniforms(*getCurrentContext(), arrayTexShaderID);

 					sglr::drawQuad(*getCurrentContext(), arrayTexShaderID, p0, p1);
 					checkError();
 				}
 			}
 		}

 		readPixels(dst, 0, 0, getWidth(), getHeight());
 	}

 private:
 	IVec3 m_texSize;
 };

 FboColorTests::FboColorTests (Context& context)
 	: TestCaseGroup(context, "color", "Colorbuffer tests")
 {
 }

 FboColorTests::~FboColorTests (void)
 {
 }

 void FboColorTests::init (void)
 {
 	static const deUint32 colorFormats[] =
 	{
 		// RGBA formats
 		GL_RGBA32I,
 		GL_RGBA32UI,
 		GL_RGBA16I,
 		GL_RGBA16UI,
 		GL_RGBA8,
 		GL_RGBA8I,
 		GL_RGBA8UI,
 		GL_SRGB8_ALPHA8,
 		GL_RGB10_A2,
 		GL_RGB10_A2UI,
 		GL_RGBA4,
 		GL_RGB5_A1,

 		// RGB formats
 		GL_RGB8,
 		GL_RGB565,

 		// RG formats
 		GL_RG32I,
 		GL_RG32UI,
 		GL_RG16I,
 		GL_RG16UI,
 		GL_RG8,
 		GL_RG8I,
 		GL_RG8UI,

 		// R formats
 		GL_R32I,
 		GL_R32UI,
 		GL_R16I,
 		GL_R16UI,
 		GL_R8,
 		GL_R8I,
 		GL_R8UI,

 		// GL_EXT_color_buffer_float
 		GL_RGBA32F,
 		GL_RGBA16F,
 		GL_R11F_G11F_B10F,
 		GL_RG32F,
 		GL_RG16F,
 		GL_R32F,
 		GL_R16F,

 		// GL_EXT_color_buffer_half_float
 		GL_RGB16F
 	};

 	static const deUint32 unorm16ColorFormats[] =
 	{
 		GL_R16,
 		GL_RG16,
 		GL_RGBA16
 	};

 	// .texcubearray
 	{
 		tcu::TestCaseGroup* texCubeArrayGroup = new tcu::TestCaseGroup(m_testCtx, "texcubearray", "Cube map array texture tests");
 		addChild(texCubeArrayGroup);

 		for (int fmtNdx = 0; fmtNdx < DE_LENGTH_OF_ARRAY(colorFormats); fmtNdx++)
 			texCubeArrayGroup->addChild(new FboColorTexCubeArrayCase(m_context, getFormatName(colorFormats[fmtNdx]), "",
 																	 colorFormats[fmtNdx], IVec3(128, 128, 12)));
 	}

 	// .tex2d
 	{
 		tcu::TestCaseGroup* tex2dGroup = new tcu::TestCaseGroup(m_testCtx, "tex2d", "Render to texture");
 		addChild(tex2dGroup);

 		for (int ndx = 0; ndx < DE_LENGTH_OF_ARRAY(unorm16ColorFormats); ndx++)
 			tex2dGroup->addChild(new FboColorTex2DCase(m_context, getFormatName(unorm16ColorFormats[ndx]), "", unorm16ColorFormats[ndx], IVec2(129, 117)));
 	}
 }

 } // Functional
 } // gles31
 } // deqp
	/*-------------------------------------------------------------------------
	* drawElements Quality Program OpenGL ES 3.1 Module
	* -------------------------------------------------
	*
	* Copyright 2014 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*
	//!
	* \file
	* \brief FBO colorbuffer tests.
	//--------------------------------------------------------------------*/

	#include "es31fFboColorbufferTests.hpp"
	#include "es31fFboTestCase.hpp"
	#include "es31fFboTestUtil.hpp"

	#include "gluTextureUtil.hpp"
	#include "gluContextInfo.hpp"

	#include "tcuCommandLine.hpp"
	#include "tcuImageCompare.hpp"
	#include "tcuRGBA.hpp"
	#include "tcuTestLog.hpp"
	#include "tcuTextureUtil.hpp"

	#include "sglrContextUtil.hpp"

	#include "deRandom.hpp"
	#include "deString.h"

	#include "glwEnums.hpp"

	namespace deqp
	{
	namespace gles31
	{
	namespace Functional
	{

	using std::string;
	using tcu::Vec2;
	using tcu::Vec3;
	using tcu::Vec4;
	using tcu::IVec2;
	using tcu::IVec3;
	using tcu::IVec4;
	using tcu::UVec4;
	using tcu::TestLog;
	using namespace FboTestUtil;

	const tcu::RGBA MIN_THRESHOLD(12, 12, 12, 12);

	static tcu::Vec4 generateRandomColor (de::Random& random)
	{
	tcu::Vec4 retVal;

	retVal[0] = random.getFloat();
	retVal[1] = random.getFloat();
	retVal[2] = random.getFloat();
	retVal[3] = 1.0f;

	return retVal;
	}

	static tcu::CubeFace getCubeFaceFromNdx (int ndx)
	{
	switch (ndx)
	{
	case 0: return tcu::CUBEFACE_POSITIVE_X;
	case 1: return tcu::CUBEFACE_NEGATIVE_X;
	case 2: return tcu::CUBEFACE_POSITIVE_Y;
	case 3: return tcu::CUBEFACE_NEGATIVE_Y;
	case 4: return tcu::CUBEFACE_POSITIVE_Z;
	case 5: return tcu::CUBEFACE_NEGATIVE_Z;
	default:
	DE_ASSERT(false);
	return tcu::CUBEFACE_LAST;
	}
	}

	class FboColorbufferCase : public FboTestCase
	{
	public:
	FboColorbufferCase (Context& context, const char* name, const char* desc, const deUint32 format)
	: FboTestCase (context, name, desc)
	, m_format (format)
	{
	}

	bool compare (const tcu::Surface& reference, const tcu::Surface& result)
	{
	const tcu::RGBA threshold (tcu::max(getFormatThreshold(m_format), MIN_THRESHOLD));

	m_testCtx.getLog() << TestLog::Message << "Comparing images, threshold: " << threshold << TestLog::EndMessage;

	return tcu::bilinearCompare(m_testCtx.getLog(), "Result", "Image comparison result", reference.getAccess(), result.getAccess(), threshold, tcu::COMPARE_LOG_RESULT);
	}

	protected:
	const deUint32 m_format;
	};

	class FboColorTex2DCase : public FboColorbufferCase
	{
	public:
	FboColorTex2DCase (Context& context, const char* name, const char* description, deUint32 texFmt, const IVec2& texSize)
	: FboColorbufferCase (context, name, description, texFmt)
	, m_texFmt (texFmt)
	, m_texSize (texSize)
	{
	}

	protected:
	void preCheck (void)
	{
	checkFormatSupport(m_texFmt);
	}

	void render (tcu::Surface& dst)
	{
	tcu::TextureFormat texFmt = glu::mapGLInternalFormat(m_texFmt);
	tcu::TextureFormatInfo fmtInfo = tcu::getTextureFormatInfo(texFmt);

	Texture2DShader texToFboShader (DataTypes() << glu::TYPE_SAMPLER_2D, getFragmentOutputType(texFmt), fmtInfo.valueMax-fmtInfo.valueMin, fmtInfo.valueMin);
	deUint32 texToFboShaderID = getCurrentContext()->createProgram(&texToFboShader);
	deUint32 fbo;
	deUint32 tex;

	// Setup shader
	texToFboShader.setUniforms(*getCurrentContext(), texToFboShaderID);

	// Generate fbo
	{
	glu::TransferFormat transferFmt = glu::getTransferFormat(texFmt);
	deUint32 format = m_texFmt;
	const IVec2& size = m_texSize;

	glGenFramebuffers(1, &fbo);
	glGenTextures(1, &tex);

	glBindTexture(GL_TEXTURE_2D, tex);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
	glTexImage2D(GL_TEXTURE_2D, 0, format, size.x(), size.y(), 0, transferFmt.format, transferFmt.dataType, DE_NULL);

	glBindFramebuffer(GL_FRAMEBUFFER, fbo);
	glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex, 0);
	checkError();
	checkFramebufferStatus(GL_FRAMEBUFFER);
	}

	// Render texture to fbo
	{
	const deUint32 format = GL_RGBA;
	const deUint32 dataType = GL_UNSIGNED_BYTE;
	const int texW = 128;
	const int texH = 128;
	deUint32 tmpTex = 0;
	const IVec2& viewport = m_texSize;
	tcu::TextureLevel data (glu::mapGLTransferFormat(format, dataType), texW, texH, 1);

	tcu::fillWithComponentGradients(data.getAccess(), Vec4(0.0f), Vec4(1.0f));

	glGenTextures(1, &tmpTex);
	glBindTexture(GL_TEXTURE_2D, tmpTex);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
	glTexImage2D(GL_TEXTURE_2D, 0, format, texW, texH, 0, format, dataType, data.getAccess().getDataPtr());

	glBindFramebuffer(GL_FRAMEBUFFER, fbo);
	glViewport(0, 0, viewport.x(), viewport.y());
	sglr::drawQuad(*getCurrentContext(), texToFboShaderID, Vec3(-1.0f, -1.0f, 0.0f), Vec3(1.0f, 1.0f, 0.0f));
	}

	readPixels(dst, 0, 0, getWidth(), getHeight(), texFmt, fmtInfo.lookupScale, fmtInfo.lookupBias);
	checkError();
	}

	private:
	deUint32 m_texFmt;
	IVec2 m_texSize;
	};

	class FboColorTexCubeArrayCase : public FboColorbufferCase
	{
	public:
	FboColorTexCubeArrayCase (Context& context, const char* name, const char* description, deUint32 texFmt, const IVec3& texSize)
	: FboColorbufferCase (context, name, description, texFmt)
	, m_texSize (texSize)
	{
	DE_ASSERT(texSize.z() % 6 == 0);
	}

	protected:
	void preCheck (void)
	{
	if (!glu::contextSupports(m_context.getRenderContext().getType(), glu::ApiType::es(3, 2)) && !m_context.getContextInfo().isExtensionSupported("GL_EXT_texture_cube_map_array"))
	TCU_THROW(NotSupportedError, "Test requires extension GL_EXT_texture_cube_map_array or a context version equal or higher than 3.2");

	checkFormatSupport(m_format);
	}

	void render (tcu::Surface& dst)
	{
	TestLog& log = m_testCtx.getLog();
	de::Random rnd (deStringHash(getName()) ^ 0xed607a89 ^ m_testCtx.getCommandLine().getBaseSeed());
	tcu::TextureFormat texFmt = glu::mapGLInternalFormat(m_format);
	tcu::TextureFormatInfo fmtInfo = tcu::getTextureFormatInfo(texFmt);

	Texture2DShader texToFboShader (DataTypes() << glu::TYPE_SAMPLER_2D, getFragmentOutputType(texFmt), fmtInfo.valueMax-fmtInfo.valueMin, fmtInfo.valueMin);
	TextureCubeArrayShader arrayTexShader (glu::getSamplerCubeArrayType(texFmt), glu::TYPE_FLOAT_VEC4, glu::getContextTypeGLSLVersion(m_context.getRenderContext().getType()));

	deUint32 texToFboShaderID = getCurrentContext()->createProgram(&texToFboShader);
	deUint32 arrayTexShaderID = getCurrentContext()->createProgram(&arrayTexShader);

	// Setup textures
	texToFboShader.setUniforms(*getCurrentContext(), texToFboShaderID);
	arrayTexShader.setTexScaleBias(fmtInfo.lookupScale, fmtInfo.lookupBias);

	// Framebuffers.
	std::vector<deUint32> fbos;
	deUint32 tex;

	{
	glu::TransferFormat transferFmt = glu::getTransferFormat(texFmt);
	bool isFilterable = glu::isGLInternalColorFormatFilterable(m_format);
	const IVec3& size = m_texSize;

	log << TestLog::Message
	<< "Creating a cube map array texture ("
	<< size.x() << "x" << size.y()
	<< ", depth: "
	<< size.z() << ")"
	<< TestLog::EndMessage;

	glGenTextures(1, &tex);

	glBindTexture(GL_TEXTURE_CUBE_MAP_ARRAY, tex);
	glTexParameteri(GL_TEXTURE_CUBE_MAP_ARRAY, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
	glTexParameteri(GL_TEXTURE_CUBE_MAP_ARRAY, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
	glTexParameteri(GL_TEXTURE_CUBE_MAP_ARRAY, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
	glTexParameteri(GL_TEXTURE_CUBE_MAP_ARRAY, GL_TEXTURE_MIN_FILTER, isFilterable ? GL_LINEAR : GL_NEAREST);
	glTexParameteri(GL_TEXTURE_CUBE_MAP_ARRAY, GL_TEXTURE_MAG_FILTER, isFilterable ? GL_LINEAR : GL_NEAREST);
	glTexImage3D(GL_TEXTURE_CUBE_MAP_ARRAY, 0, m_format, size.x(), size.y(), size.z(), 0, transferFmt.format, transferFmt.dataType, DE_NULL);

	log << TestLog::Message << "Creating a framebuffer object for each layer-face" << TestLog::EndMessage;

	// Generate an FBO for each layer-face
	for (int ndx = 0; ndx < m_texSize.z(); ndx++)
	{
	deUint32 layerFbo;

	glGenFramebuffers(1, &layerFbo);
	glBindFramebuffer(GL_FRAMEBUFFER, layerFbo);
	glFramebufferTextureLayer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, tex, 0, ndx);
	checkError();
	checkFramebufferStatus(GL_FRAMEBUFFER);

	fbos.push_back(layerFbo);
	}
	}

	log << TestLog::Message << "Rendering test images to layer-faces in randomized order" << TestLog::EndMessage;

	{
	std::vector<int> order(fbos.size());

	for (size_t n = 0; n < order.size(); n++)
	order[n] = (int)n;
	rnd.shuffle(order.begin(), order.end());

	for (size_t ndx = 0; ndx < order.size(); ndx++)
	{
	const int layerFace = order[ndx];
	const deUint32 format = GL_RGBA;
	const deUint32 dataType = GL_UNSIGNED_BYTE;
	const int texW = 128;
	const int texH = 128;
	deUint32 tmpTex = 0;
	const deUint32 fbo = fbos[layerFace];
	const IVec3& viewport = m_texSize;
	tcu::TextureLevel data (glu::mapGLTransferFormat(format, dataType), texW, texH, 1);

	tcu::fillWithGrid(data.getAccess(), 8, generateRandomColor(rnd), Vec4(0.0f));

	glGenTextures(1, &tmpTex);
	glBindTexture(GL_TEXTURE_2D, tmpTex);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
	glTexImage2D(GL_TEXTURE_2D, 0, format, texW, texH, 0, format, dataType, data.getAccess().getDataPtr());

	glBindFramebuffer(GL_FRAMEBUFFER, fbo);
	glViewport(0, 0, viewport.x(), viewport.y());
	sglr::drawQuad(*getCurrentContext(), texToFboShaderID, Vec3(-1.0f, -1.0f, 0.0f), Vec3(1.0f, 1.0f, 0.0f));
	checkError();

	// Render to framebuffer
	{
	const Vec3 p0 = Vec3(float(ndx % 2) - 1.0f, float(ndx / 2) - 1.0f, 0.0f);
	const Vec3 p1 = p0 + Vec3(1.0f, 1.0f, 0.0f);
	const int layer = layerFace / 6;
	const tcu::CubeFace face = getCubeFaceFromNdx(layerFace % 6);

	glBindFramebuffer(GL_FRAMEBUFFER, 0);
	glViewport(0, 0, getWidth(), getHeight());

	glActiveTexture(GL_TEXTURE0);
	glBindTexture(GL_TEXTURE_CUBE_MAP_ARRAY, tex);

	arrayTexShader.setLayer(layer);
	arrayTexShader.setFace(face);
	arrayTexShader.setUniforms(*getCurrentContext(), arrayTexShaderID);

	sglr::drawQuad(*getCurrentContext(), arrayTexShaderID, p0, p1);
	checkError();
	}
	}
	}

	readPixels(dst, 0, 0, getWidth(), getHeight());
	}

	private:
	IVec3 m_texSize;
	};

	FboColorTests::FboColorTests (Context& context)
	: TestCaseGroup(context, "color", "Colorbuffer tests")
	{
	}

	FboColorTests::~FboColorTests (void)
	{
	}

	void FboColorTests::init (void)
	{
	static const deUint32 colorFormats[] =
	{
	// RGBA formats
	GL_RGBA32I,
	GL_RGBA32UI,
	GL_RGBA16I,
	GL_RGBA16UI,
	GL_RGBA8,
	GL_RGBA8I,
	GL_RGBA8UI,
	GL_SRGB8_ALPHA8,
	GL_RGB10_A2,
	GL_RGB10_A2UI,
	GL_RGBA4,
	GL_RGB5_A1,

	// RGB formats
	GL_RGB8,
	GL_RGB565,

	// RG formats
	GL_RG32I,
	GL_RG32UI,
	GL_RG16I,
	GL_RG16UI,
	GL_RG8,
	GL_RG8I,
	GL_RG8UI,

	// R formats
	GL_R32I,
	GL_R32UI,
	GL_R16I,
	GL_R16UI,
	GL_R8,
	GL_R8I,
	GL_R8UI,

	// GL_EXT_color_buffer_float
	GL_RGBA32F,
	GL_RGBA16F,
	GL_R11F_G11F_B10F,
	GL_RG32F,
	GL_RG16F,
	GL_R32F,
	GL_R16F,

	// GL_EXT_color_buffer_half_float
	GL_RGB16F
	};

	static const deUint32 unorm16ColorFormats[] =
	{
	GL_R16,
	GL_RG16,
	GL_RGBA16
	};

	// .texcubearray
	{
	tcu::TestCaseGroup* texCubeArrayGroup = new tcu::TestCaseGroup(m_testCtx, "texcubearray", "Cube map array texture tests");
	addChild(texCubeArrayGroup);

	for (int fmtNdx = 0; fmtNdx < DE_LENGTH_OF_ARRAY(colorFormats); fmtNdx++)
	texCubeArrayGroup->addChild(new FboColorTexCubeArrayCase(m_context, getFormatName(colorFormats[fmtNdx]), "",
	colorFormats[fmtNdx], IVec3(128, 128, 12)));
	}

	// .tex2d
	{
	tcu::TestCaseGroup* tex2dGroup = new tcu::TestCaseGroup(m_testCtx, "tex2d", "Render to texture");
	addChild(tex2dGroup);

	for (int ndx = 0; ndx < DE_LENGTH_OF_ARRAY(unorm16ColorFormats); ndx++)
	tex2dGroup->addChild(new FboColorTex2DCase(m_context, getFormatName(unorm16ColorFormats[ndx]), "", unorm16ColorFormats[ndx], IVec2(129, 117)));
	}
	}

	} // Functional
	} // gles31
	} // deqp