es3aTextureMipmapTests.cpp revision 469002caa1ccd58f59f53a1bf3dbac4cf6a5d817 
1/*-------------------------------------------------------------------------
2 * drawElements Quality Program OpenGL ES 3.0 Module
3 * -------------------------------------------------
4 *
5 * Copyright 2014 The Android Open Source Project
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 *      http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 *
19 *//*!
20 * \file
21 * \brief Mipmapping accuracy tests.
22 *//*--------------------------------------------------------------------*/
23
24#include "es3aTextureMipmapTests.hpp"
25
26#include "glsTextureTestUtil.hpp"
27#include "gluTexture.hpp"
28#include "gluTextureUtil.hpp"
29#include "gluPixelTransfer.hpp"
30#include "tcuTextureUtil.hpp"
31#include "tcuMatrix.hpp"
32#include "tcuMatrixUtil.hpp"
33#include "deStringUtil.hpp"
34#include "deRandom.hpp"
35#include "deString.h"
36
37#include "glwFunctions.hpp"
38#include "glwEnums.hpp"
39
40namespace deqp
41{
42namespace gles3
43{
44namespace Accuracy
45{
46
47using std::string;
48using std::vector;
49using tcu::TestLog;
50using tcu::Vec2;
51using tcu::Vec3;
52using tcu::Vec4;
53using tcu::IVec4;
54using namespace gls::TextureTestUtil;
55
56
57enum CoordType
58{
59	COORDTYPE_BASIC,		//!< texCoord = translateScale(position).
60	COORDTYPE_BASIC_BIAS,	//!< Like basic, but with bias values.
61	COORDTYPE_AFFINE,		//!< texCoord = translateScaleRotateShear(position).
62	COORDTYPE_PROJECTED,	//!< Projected coordinates, w != 1
63
64	COORDTYPE_LAST
65};
66
67// Texture2DMipmapCase
68
69class Texture2DMipmapCase : public tcu::TestCase
70{
71public:
72
73								Texture2DMipmapCase			(tcu::TestContext&			testCtx,
74															 glu::RenderContext&		renderCtx,
75															 const glu::ContextInfo&	renderCtxInfo,
76															 const char*				name,
77															 const char*				desc,
78															 CoordType					coordType,
79															 deUint32					minFilter,
80															 deUint32					wrapS,
81															 deUint32					wrapT,
82															 deUint32					format,
83															 deUint32					dataType,
84															 int						width,
85															 int						height);
86								~Texture2DMipmapCase		(void);
87
88	void						init						(void);
89	void						deinit						(void);
90	IterateResult				iterate						(void);
91
92private:
93								Texture2DMipmapCase			(const Texture2DMipmapCase& other);
94	Texture2DMipmapCase&		operator=					(const Texture2DMipmapCase& other);
95
96	glu::RenderContext&			m_renderCtx;
97	const glu::ContextInfo&		m_renderCtxInfo;
98
99	CoordType					m_coordType;
100	deUint32					m_minFilter;
101	deUint32					m_wrapS;
102	deUint32					m_wrapT;
103	deUint32					m_format;
104	deUint32					m_dataType;
105	int							m_width;
106	int							m_height;
107
108	glu::Texture2D*				m_texture;
109	TextureRenderer				m_renderer;
110};
111
112Texture2DMipmapCase::Texture2DMipmapCase (tcu::TestContext&			testCtx,
113										  glu::RenderContext&		renderCtx,
114										  const glu::ContextInfo&	renderCtxInfo,
115										  const char*				name,
116										  const char*				desc,
117										  CoordType					coordType,
118										  deUint32					minFilter,
119										  deUint32					wrapS,
120										  deUint32					wrapT,
121										  deUint32					format,
122										  deUint32					dataType,
123										  int						width,
124										  int						height)
125	: TestCase			(testCtx, tcu::NODETYPE_ACCURACY, name, desc)
126	, m_renderCtx		(renderCtx)
127	, m_renderCtxInfo	(renderCtxInfo)
128	, m_coordType		(coordType)
129	, m_minFilter		(minFilter)
130	, m_wrapS			(wrapS)
131	, m_wrapT			(wrapT)
132	, m_format			(format)
133	, m_dataType		(dataType)
134	, m_width			(width)
135	, m_height			(height)
136	, m_texture			(DE_NULL)
137	, m_renderer		(renderCtx, testCtx.getLog(), glu::GLSL_VERSION_300_ES, glu::PRECISION_HIGHP)
138{
139}
140
141Texture2DMipmapCase::~Texture2DMipmapCase (void)
142{
143	deinit();
144}
145
146void Texture2DMipmapCase::init (void)
147{
148	m_texture = new glu::Texture2D(m_renderCtx, m_format, m_dataType, m_width, m_height);
149
150	int numLevels = deLog2Floor32(de::max(m_width, m_height))+1;
151
152	// Fill texture with colored grid.
153	for (int levelNdx = 0; levelNdx < numLevels; levelNdx++)
154	{
155		deUint32	step		= 0xff / (numLevels-1);
156		deUint32	inc			= deClamp32(step*levelNdx, 0x00, 0xff);
157		deUint32	dec			= 0xff - inc;
158		deUint32	rgb			= (inc << 16) | (dec << 8) | 0xff;
159		deUint32	color		= 0xff000000 | rgb;
160
161		m_texture->getRefTexture().allocLevel(levelNdx);
162		tcu::clear(m_texture->getRefTexture().getLevel(levelNdx), toVec4(tcu::RGBA(color)));
163	}
164}
165
166void Texture2DMipmapCase::deinit (void)
167{
168	delete m_texture;
169	m_texture = DE_NULL;
170
171	m_renderer.clear();
172}
173
174static void getBasicTexCoord2D (std::vector<float>& dst, int cellNdx)
175{
176	static const struct
177	{
178		Vec2 bottomLeft;
179		Vec2 topRight;
180	} s_basicCoords[] =
181	{
182		{ Vec2(-0.1f,  0.1f), Vec2( 0.8f,  1.0f) },
183		{ Vec2(-0.3f, -0.6f), Vec2( 0.7f,  0.4f) },
184		{ Vec2(-0.3f,  0.6f), Vec2( 0.7f, -0.9f) },
185		{ Vec2(-0.8f,  0.6f), Vec2( 0.7f, -0.9f) },
186
187		{ Vec2(-0.5f, -0.5f), Vec2( 1.5f,  1.5f) },
188		{ Vec2( 1.0f, -1.0f), Vec2(-1.3f,  1.0f) },
189		{ Vec2( 1.2f, -1.0f), Vec2(-1.3f,  1.6f) },
190		{ Vec2( 2.2f, -1.1f), Vec2(-1.3f,  0.8f) },
191
192		{ Vec2(-1.5f,  1.6f), Vec2( 1.7f, -1.4f) },
193		{ Vec2( 2.0f,  1.6f), Vec2( 2.3f, -1.4f) },
194		{ Vec2( 1.3f, -2.6f), Vec2(-2.7f,  2.9f) },
195		{ Vec2(-0.8f, -6.6f), Vec2( 6.0f, -0.9f) },
196
197		{ Vec2( -8.0f,   9.0f), Vec2(  8.3f,  -7.0f) },
198		{ Vec2(-16.0f,  10.0f), Vec2( 18.3f,  24.0f) },
199		{ Vec2( 30.2f,  55.0f), Vec2(-24.3f,  -1.6f) },
200		{ Vec2(-33.2f,  64.1f), Vec2( 32.1f, -64.1f) },
201	};
202
203	DE_ASSERT(de::inBounds(cellNdx, 0, DE_LENGTH_OF_ARRAY(s_basicCoords)));
204
205	const Vec2& bottomLeft	= s_basicCoords[cellNdx].bottomLeft;
206	const Vec2& topRight	= s_basicCoords[cellNdx].topRight;
207
208	computeQuadTexCoord2D(dst, bottomLeft, topRight);
209}
210
211static void getAffineTexCoord2D (std::vector<float>& dst, int cellNdx)
212{
213	// Use basic coords as base.
214	getBasicTexCoord2D(dst, cellNdx);
215
216	// Rotate based on cell index.
217	float		angle		= 2.0f*DE_PI * ((float)cellNdx / 16.0f);
218	tcu::Mat2	rotMatrix	= tcu::rotationMatrix(angle);
219
220	// Second and third row are sheared.
221	float		shearX		= de::inRange(cellNdx, 4, 11) ? (float)(15-cellNdx) / 16.0f : 0.0f;
222	tcu::Mat2	shearMatrix	= tcu::shearMatrix(tcu::Vec2(shearX, 0.0f));
223
224	tcu::Mat2	transform	= rotMatrix * shearMatrix;
225	Vec2		p0			= transform * Vec2(dst[0], dst[1]);
226	Vec2		p1			= transform * Vec2(dst[2], dst[3]);
227	Vec2		p2			= transform * Vec2(dst[4], dst[5]);
228	Vec2		p3			= transform * Vec2(dst[6], dst[7]);
229
230	dst[0] = p0.x();	dst[1] = p0.y();
231	dst[2] = p1.x();	dst[3] = p1.y();
232	dst[4] = p2.x();	dst[5] = p2.y();
233	dst[6] = p3.x();	dst[7] = p3.y();
234}
235
236Texture2DMipmapCase::IterateResult Texture2DMipmapCase::iterate (void)
237{
238	// Constants.
239	const deUint32				magFilter			= GL_NEAREST;
240
241	const glw::Functions&		gl					= m_renderCtx.getFunctions();
242	TestLog&					log					= m_testCtx.getLog();
243
244	const tcu::Texture2D&		refTexture			= m_texture->getRefTexture();
245	const tcu::TextureFormat&	texFmt				= refTexture.getFormat();
246	tcu::TextureFormatInfo		fmtInfo				= tcu::getTextureFormatInfo(texFmt);
247
248	int							texWidth			= refTexture.getWidth();
249	int							texHeight			= refTexture.getHeight();
250	int							defViewportWidth	= texWidth*4;
251	int							defViewportHeight	= texHeight*4;
252
253	RandomViewport				viewport			(m_renderCtx.getRenderTarget(), defViewportWidth, defViewportHeight, deStringHash(getName()));
254	ReferenceParams				sampleParams		(TEXTURETYPE_2D);
255	vector<float>				texCoord;
256
257	bool						isProjected			= m_coordType == COORDTYPE_PROJECTED;
258	bool						useLodBias			= m_coordType == COORDTYPE_BASIC_BIAS;
259
260	tcu::Surface				renderedFrame		(viewport.width, viewport.height);
261
262	// Accuracy cases test against ideal lod computation.
263	tcu::Surface				idealFrame			(viewport.width, viewport.height);
264
265	// Viewport is divided into 4x4 grid.
266	int							gridWidth			= 4;
267	int							gridHeight			= 4;
268	int							cellWidth			= viewport.width / gridWidth;
269	int							cellHeight			= viewport.height / gridHeight;
270
271	// Accuracy measurements are off unless we get the expected viewport size.
272	if (viewport.width < defViewportWidth || viewport.height < defViewportHeight)
273		throw tcu::NotSupportedError("Too small viewport", "", __FILE__, __LINE__);
274
275	// Sampling parameters.
276	sampleParams.sampler		= glu::mapGLSampler(m_wrapS, m_wrapT, m_minFilter, magFilter);
277	sampleParams.samplerType	= gls::TextureTestUtil::getSamplerType(m_texture->getRefTexture().getFormat());
278	sampleParams.colorBias		= fmtInfo.lookupBias;
279	sampleParams.colorScale		= fmtInfo.lookupScale;
280	sampleParams.flags			= (isProjected ? ReferenceParams::PROJECTED : 0) | (useLodBias ? ReferenceParams::USE_BIAS : 0);
281
282	// Upload texture data.
283	m_texture->upload();
284
285	// Use unit 0.
286	gl.activeTexture(GL_TEXTURE0);
287
288	// Bind gradient texture and setup sampler parameters.
289	gl.bindTexture(GL_TEXTURE_2D, m_texture->getGLTexture());
290	gl.texParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,		m_wrapS);
291	gl.texParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,		m_wrapT);
292	gl.texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,	m_minFilter);
293	gl.texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,	magFilter);
294
295	GLU_EXPECT_NO_ERROR(gl.getError(), "After texture setup");
296
297	// Bias values.
298	static const float s_bias[] = { 1.0f, -2.0f, 0.8f, -0.5f, 1.5f, 0.9f, 2.0f, 4.0f };
299
300	// Projection values.
301	static const Vec4 s_projections[] =
302	{
303		Vec4(1.2f, 1.0f, 0.7f, 1.0f),
304		Vec4(1.3f, 0.8f, 0.6f, 2.0f),
305		Vec4(0.8f, 1.0f, 1.7f, 0.6f),
306		Vec4(1.2f, 1.0f, 1.7f, 1.5f)
307	};
308
309	// Render cells.
310	for (int gridY = 0; gridY < gridHeight; gridY++)
311	{
312		for (int gridX = 0; gridX < gridWidth; gridX++)
313		{
314			int				curX		= cellWidth*gridX;
315			int				curY		= cellHeight*gridY;
316			int				curW		= gridX+1 == gridWidth ? (viewport.width-curX) : cellWidth;
317			int				curH		= gridY+1 == gridHeight ? (viewport.height-curY) : cellHeight;
318			int				cellNdx		= gridY*gridWidth + gridX;
319
320			// Compute texcoord.
321			switch (m_coordType)
322			{
323				case COORDTYPE_BASIC_BIAS:	// Fall-through.
324				case COORDTYPE_PROJECTED:
325				case COORDTYPE_BASIC:		getBasicTexCoord2D	(texCoord, cellNdx);	break;
326				case COORDTYPE_AFFINE:		getAffineTexCoord2D	(texCoord, cellNdx);	break;
327				default:					DE_ASSERT(DE_FALSE);
328			}
329
330			if (isProjected)
331				sampleParams.w = s_projections[cellNdx % DE_LENGTH_OF_ARRAY(s_projections)];
332
333			if (useLodBias)
334				sampleParams.bias = s_bias[cellNdx % DE_LENGTH_OF_ARRAY(s_bias)];
335
336			// Render with GL.
337			gl.viewport(viewport.x+curX, viewport.y+curY, curW, curH);
338			m_renderer.renderQuad(0, &texCoord[0], sampleParams);
339
340			// Render reference(s).
341			{
342				SurfaceAccess idealDst(idealFrame, m_renderCtx.getRenderTarget().getPixelFormat(), curX, curY, curW, curH);
343				sampleParams.lodMode = LODMODE_EXACT;
344				sampleTexture(idealDst, m_texture->getRefTexture(), &texCoord[0], sampleParams);
345			}
346		}
347	}
348
349	// Read result.
350	glu::readPixels(m_renderCtx, viewport.x, viewport.y, renderedFrame.getAccess());
351
352	// Compare and log.
353	{
354		const int	bestScoreDiff	= (texWidth/16)*(texHeight/16);
355		const int	worstScoreDiff	= texWidth*texHeight;
356
357		int score = measureAccuracy(log, idealFrame, renderedFrame, bestScoreDiff, worstScoreDiff);
358		m_testCtx.setTestResult(QP_TEST_RESULT_PASS, de::toString(score).c_str());
359	}
360
361	return STOP;
362}
363
364// TextureCubeMipmapCase
365
366class TextureCubeMipmapCase : public tcu::TestCase
367{
368public:
369
370								TextureCubeMipmapCase		(tcu::TestContext&			testCtx,
371															 glu::RenderContext&		renderCtx,
372															 const glu::ContextInfo&	renderCtxInfo,
373															 const char*				name,
374															 const char*				desc,
375															 CoordType					coordType,
376															 deUint32					minFilter,
377															 deUint32					wrapS,
378															 deUint32					wrapT,
379															 deUint32					format,
380															 deUint32					dataType,
381															 int						size);
382								~TextureCubeMipmapCase		(void);
383
384	void						init						(void);
385	void						deinit						(void);
386	IterateResult				iterate						(void);
387
388private:
389								TextureCubeMipmapCase		(const TextureCubeMipmapCase& other);
390	TextureCubeMipmapCase&		operator=					(const TextureCubeMipmapCase& other);
391
392	glu::RenderContext&			m_renderCtx;
393	const glu::ContextInfo&		m_renderCtxInfo;
394
395	CoordType					m_coordType;
396	deUint32					m_minFilter;
397	deUint32					m_wrapS;
398	deUint32					m_wrapT;
399	deUint32					m_format;
400	deUint32					m_dataType;
401	int							m_size;
402
403	glu::TextureCube*			m_texture;
404	TextureRenderer				m_renderer;
405};
406
407TextureCubeMipmapCase::TextureCubeMipmapCase (tcu::TestContext&			testCtx,
408											  glu::RenderContext&		renderCtx,
409											  const glu::ContextInfo&	renderCtxInfo,
410											  const char*				name,
411											  const char*				desc,
412											  CoordType					coordType,
413											  deUint32					minFilter,
414											  deUint32					wrapS,
415											  deUint32					wrapT,
416											  deUint32					format,
417											  deUint32					dataType,
418											  int						size)
419	: TestCase			(testCtx, tcu::NODETYPE_ACCURACY, name, desc)
420	, m_renderCtx		(renderCtx)
421	, m_renderCtxInfo	(renderCtxInfo)
422	, m_coordType		(coordType)
423	, m_minFilter		(minFilter)
424	, m_wrapS			(wrapS)
425	, m_wrapT			(wrapT)
426	, m_format			(format)
427	, m_dataType		(dataType)
428	, m_size			(size)
429	, m_texture			(DE_NULL)
430	, m_renderer		(renderCtx, testCtx.getLog(), glu::GLSL_VERSION_300_ES, glu::PRECISION_HIGHP)
431{
432}
433
434TextureCubeMipmapCase::~TextureCubeMipmapCase (void)
435{
436	deinit();
437}
438
439void TextureCubeMipmapCase::init (void)
440{
441	m_texture = new glu::TextureCube(m_renderCtx, m_format, m_dataType, m_size);
442
443	int numLevels = deLog2Floor32(m_size)+1;
444
445	// Fill texture with colored grid.
446	for (int faceNdx = 0; faceNdx < tcu::CUBEFACE_LAST; faceNdx++)
447	{
448		for (int levelNdx = 0; levelNdx < numLevels; levelNdx++)
449		{
450			deUint32	step		= 0xff / (numLevels-1);
451			deUint32	inc			= deClamp32(step*levelNdx, 0x00, 0xff);
452			deUint32	dec			= 0xff - inc;
453			deUint32	rgb			= 0;
454
455			switch (faceNdx)
456			{
457				case 0: rgb = (inc << 16) | (dec << 8) | 255; break;
458				case 1: rgb = (255 << 16) | (inc << 8) | dec; break;
459				case 2: rgb = (dec << 16) | (255 << 8) | inc; break;
460				case 3: rgb = (dec << 16) | (inc << 8) | 255; break;
461				case 4: rgb = (255 << 16) | (dec << 8) | inc; break;
462				case 5: rgb = (inc << 16) | (255 << 8) | dec; break;
463			}
464
465			deUint32	color		= 0xff000000 | rgb;
466
467			m_texture->getRefTexture().allocLevel((tcu::CubeFace)faceNdx, levelNdx);
468			tcu::clear(m_texture->getRefTexture().getLevelFace(levelNdx, (tcu::CubeFace)faceNdx), toVec4(tcu::RGBA(color)));
469		}
470	}
471}
472
473void TextureCubeMipmapCase::deinit (void)
474{
475	delete m_texture;
476	m_texture = DE_NULL;
477
478	m_renderer.clear();
479}
480
481static void randomPartition (vector<IVec4>& dst, de::Random& rnd, int x, int y, int width, int height)
482{
483	const int minWidth	= 8;
484	const int minHeight	= 8;
485
486	bool	partition		= rnd.getFloat() > 0.4f;
487	bool	partitionX		= partition && width > minWidth && rnd.getBool();
488	bool	partitionY		= partition && height > minHeight && !partitionX;
489
490	if (partitionX)
491	{
492		int split = width/2 + rnd.getInt(-width/4, +width/4);
493		randomPartition(dst, rnd, x, y, split, height);
494		randomPartition(dst, rnd, x+split, y, width-split, height);
495	}
496	else if (partitionY)
497	{
498		int split = height/2 + rnd.getInt(-height/4, +height/4);
499		randomPartition(dst, rnd, x, y, width, split);
500		randomPartition(dst, rnd, x, y+split, width, height-split);
501	}
502	else
503		dst.push_back(IVec4(x, y, width, height));
504}
505
506static void computeGridLayout (vector<IVec4>& dst, int width, int height)
507{
508	de::Random rnd(7);
509	randomPartition(dst, rnd, 0, 0, width, height);
510}
511
512TextureCubeMipmapCase::IterateResult TextureCubeMipmapCase::iterate (void)
513{
514	// Constants.
515	const deUint32			magFilter			= GL_NEAREST;
516
517	int						texWidth			= m_texture->getRefTexture().getSize();
518	int						texHeight			= m_texture->getRefTexture().getSize();
519
520	int						defViewportWidth	= texWidth*2;
521	int						defViewportHeight	= texHeight*2;
522
523	const glw::Functions&	gl					= m_renderCtx.getFunctions();
524	TestLog&				log					= m_testCtx.getLog();
525	RandomViewport			viewport			(m_renderCtx.getRenderTarget(), defViewportWidth, defViewportHeight, deStringHash(getName()));
526	tcu::Sampler			sampler				= glu::mapGLSampler(m_wrapS, m_wrapT, m_minFilter, magFilter);
527	sampler.seamlessCubeMap = true;
528
529	vector<float>			texCoord;
530
531	bool					isProjected			= m_coordType == COORDTYPE_PROJECTED;
532	bool					useLodBias			= m_coordType == COORDTYPE_BASIC_BIAS;
533
534	tcu::Surface			renderedFrame		(viewport.width, viewport.height);
535
536	// Accuracy cases test against ideal lod computation.
537	tcu::Surface			idealFrame			(viewport.width, viewport.height);
538
539	// Accuracy measurements are off unless we get the expected viewport size.
540	if (viewport.width < defViewportWidth || viewport.height < defViewportHeight)
541		throw tcu::NotSupportedError("Too small viewport", "", __FILE__, __LINE__);
542
543	// Upload texture data.
544	m_texture->upload();
545
546	// Use unit 0.
547	gl.activeTexture(GL_TEXTURE0);
548
549	// Bind gradient texture and setup sampler parameters.
550	gl.bindTexture(GL_TEXTURE_CUBE_MAP, m_texture->getGLTexture());
551	gl.texParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S,		m_wrapS);
552	gl.texParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T,		m_wrapT);
553	gl.texParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER,	m_minFilter);
554	gl.texParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER,	magFilter);
555
556	GLU_EXPECT_NO_ERROR(gl.getError(), "After texture setup");
557
558	// Compute grid.
559	vector<IVec4> gridLayout;
560	computeGridLayout(gridLayout, viewport.width, viewport.height);
561
562	// Bias values.
563	static const float s_bias[] = { 1.0f, -2.0f, 0.8f, -0.5f, 1.5f, 0.9f, 2.0f, 4.0f };
564
565	// Projection values \note Less agressive than in 2D case due to smaller quads.
566	static const Vec4 s_projections[] =
567	{
568		Vec4(1.2f, 1.0f, 0.7f, 1.0f),
569		Vec4(1.3f, 0.8f, 0.6f, 1.1f),
570		Vec4(0.8f, 1.0f, 1.2f, 0.8f),
571		Vec4(1.2f, 1.0f, 1.3f, 0.9f)
572	};
573
574	for (int cellNdx = 0; cellNdx < (int)gridLayout.size(); cellNdx++)
575	{
576		int				curX		= gridLayout[cellNdx].x();
577		int				curY		= gridLayout[cellNdx].y();
578		int				curW		= gridLayout[cellNdx].z();
579		int				curH		= gridLayout[cellNdx].w();
580		tcu::CubeFace	cubeFace	= (tcu::CubeFace)(cellNdx % tcu::CUBEFACE_LAST);
581		ReferenceParams	params		(TEXTURETYPE_CUBE);
582
583		params.sampler = sampler;
584
585		DE_ASSERT(m_coordType != COORDTYPE_AFFINE); // Not supported.
586		computeQuadTexCoordCube(texCoord, cubeFace);
587
588		if (isProjected)
589		{
590			params.flags	|= ReferenceParams::PROJECTED;
591			params.w		 = s_projections[cellNdx % DE_LENGTH_OF_ARRAY(s_projections)];
592		}
593
594		if (useLodBias)
595		{
596			params.flags	|= ReferenceParams::USE_BIAS;
597			params.bias		 = s_bias[cellNdx % DE_LENGTH_OF_ARRAY(s_bias)];
598		}
599
600		// Render with GL.
601		gl.viewport(viewport.x+curX, viewport.y+curY, curW, curH);
602		m_renderer.renderQuad(0, &texCoord[0], params);
603
604		// Render reference(s).
605		{
606			SurfaceAccess idealDst(idealFrame, m_renderCtx.getRenderTarget().getPixelFormat(), curX, curY, curW, curH);
607			params.lodMode = LODMODE_EXACT;
608			sampleTexture(idealDst, m_texture->getRefTexture(), &texCoord[0], params);
609		}
610	}
611
612	// Read result.
613	glu::readPixels(m_renderCtx, viewport.x, viewport.y, renderedFrame.getAccess());
614
615	// Compare and log.
616	{
617		const int	bestScoreDiff	= (texWidth/16)*(texHeight/16);
618		const int	worstScoreDiff	= texWidth*texHeight;
619
620		int score = measureAccuracy(log, idealFrame, renderedFrame, bestScoreDiff, worstScoreDiff);
621		m_testCtx.setTestResult(QP_TEST_RESULT_PASS, de::toString(score).c_str());
622	}
623
624	return STOP;
625}
626
627TextureMipmapTests::TextureMipmapTests (Context& context)
628	: TestCaseGroup(context, "mipmap", "Mipmapping accuracy tests")
629{
630}
631
632TextureMipmapTests::~TextureMipmapTests (void)
633{
634}
635
636void TextureMipmapTests::init (void)
637{
638	tcu::TestCaseGroup* group2D		= new tcu::TestCaseGroup(m_testCtx, "2d",	"2D Texture Mipmapping");
639	tcu::TestCaseGroup*	groupCube	= new tcu::TestCaseGroup(m_testCtx, "cube",	"Cube Map Filtering");
640	addChild(group2D);
641	addChild(groupCube);
642
643	static const struct
644	{
645		const char*		name;
646		deUint32		mode;
647	} wrapModes[] =
648	{
649		{ "clamp",		GL_CLAMP_TO_EDGE },
650		{ "repeat",		GL_REPEAT },
651		{ "mirror",		GL_MIRRORED_REPEAT }
652	};
653
654	static const struct
655	{
656		const char*		name;
657		deUint32		mode;
658	} minFilterModes[] =
659	{
660		{ "nearest_nearest",	GL_NEAREST_MIPMAP_NEAREST	},
661		{ "linear_nearest",		GL_LINEAR_MIPMAP_NEAREST	},
662		{ "nearest_linear",		GL_NEAREST_MIPMAP_LINEAR	},
663		{ "linear_linear",		GL_LINEAR_MIPMAP_LINEAR		}
664	};
665
666	static const struct
667	{
668		CoordType		type;
669		const char*		name;
670		const char*		desc;
671	} coordTypes[] =
672	{
673		{ COORDTYPE_BASIC,		"basic",		"Mipmapping with translated and scaled coordinates" },
674		{ COORDTYPE_AFFINE,		"affine",		"Mipmapping with affine coordinate transform"		},
675		{ COORDTYPE_PROJECTED,	"projected",	"Mipmapping with perspective projection"			}
676	};
677
678	const int tex2DWidth	= 64;
679	const int tex2DHeight	= 64;
680
681	// 2D cases.
682	for (int coordType = 0; coordType < DE_LENGTH_OF_ARRAY(coordTypes); coordType++)
683	{
684		tcu::TestCaseGroup* coordTypeGroup = new tcu::TestCaseGroup(m_testCtx, coordTypes[coordType].name, coordTypes[coordType].desc);
685		group2D->addChild(coordTypeGroup);
686
687		for (int minFilter = 0; minFilter < DE_LENGTH_OF_ARRAY(minFilterModes); minFilter++)
688		{
689			for (int wrapMode = 0; wrapMode < DE_LENGTH_OF_ARRAY(wrapModes); wrapMode++)
690			{
691				std::ostringstream name;
692				name << minFilterModes[minFilter].name
693						<< "_" << wrapModes[wrapMode].name;
694
695				coordTypeGroup->addChild(new Texture2DMipmapCase(m_testCtx, m_context.getRenderContext(), m_context.getContextInfo(),
696																	name.str().c_str(), "",
697																	coordTypes[coordType].type,
698																	minFilterModes[minFilter].mode,
699																	wrapModes[wrapMode].mode,
700																	wrapModes[wrapMode].mode,
701																	GL_RGBA, GL_UNSIGNED_BYTE,
702																	tex2DWidth, tex2DHeight));
703			}
704		}
705	}
706
707	const int cubeMapSize = 64;
708
709	static const struct
710	{
711		CoordType		type;
712		const char*		name;
713		const char*		desc;
714	} cubeCoordTypes[] =
715	{
716		{ COORDTYPE_BASIC,		"basic",		"Mipmapping with translated and scaled coordinates" },
717		{ COORDTYPE_PROJECTED,	"projected",	"Mipmapping with perspective projection"			}
718	};
719
720	// Cubemap cases.
721	for (int coordType = 0; coordType < DE_LENGTH_OF_ARRAY(cubeCoordTypes); coordType++)
722	{
723		tcu::TestCaseGroup* coordTypeGroup = new tcu::TestCaseGroup(m_testCtx, cubeCoordTypes[coordType].name, cubeCoordTypes[coordType].desc);
724		groupCube->addChild(coordTypeGroup);
725
726		for (int minFilter = 0; minFilter < DE_LENGTH_OF_ARRAY(minFilterModes); minFilter++)
727		{
728			coordTypeGroup->addChild(new TextureCubeMipmapCase(m_testCtx, m_context.getRenderContext(), m_context.getContextInfo(),
729															   minFilterModes[minFilter].name, "",
730															   cubeCoordTypes[coordType].type,
731															   minFilterModes[minFilter].mode,
732															   GL_CLAMP_TO_EDGE,
733															   GL_CLAMP_TO_EDGE,
734															   GL_RGBA, GL_UNSIGNED_BYTE, cubeMapSize));
735		}
736	}
737}
738
739} // Accuracy
740} // gles3
741} // deqp
742