1 /*-------------------------------------------------------------------------
2 * drawElements Quality Program OpenGL ES 3.0 Module
3 * -------------------------------------------------
4 *
5 * Copyright 2018 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 Multiview tests.
22 * Tests functionality provided by the three multiview extensions.
23 */ /*--------------------------------------------------------------------*/
24
25 #include "es3fMultiviewTests.hpp"
26
27 #include "deString.h"
28 #include "deStringUtil.hpp"
29 #include "gluContextInfo.hpp"
30 #include "gluPixelTransfer.hpp"
31 #include "gluShaderProgram.hpp"
32 #include "glw.h"
33 #include "glwEnums.hpp"
34 #include "glwFunctions.hpp"
35 #include "tcuRenderTarget.hpp"
36 #include "tcuSurface.hpp"
37 #include "tcuTestLog.hpp"
38 #include "tcuVector.hpp"
39
40 using tcu::TestLog;
41 using tcu::Vec4;
42
43 namespace deqp
44 {
45 namespace gles3
46 {
47 namespace Functional
48 {
49
50 static const int NUM_CASE_ITERATIONS = 1;
51 static const float UNIT_SQUARE[16] = {
52 1.0f, 1.0f, 0.05f, 1.0f, // Vertex 0
53 1.0f, -1.0f, 0.05f, 1.0f, // Vertex 1
54 -1.0f, 1.0f, 0.05f, 1.0f, // Vertex 2
55 -1.0f, -1.0f, 0.05f, 1.0f // Vertex 3
56 };
57 static const float COLOR_VALUES[] = {
58 1, 0, 0, 1, // Red for level 0
59 0, 1, 0, 1, // Green for level 1
60 };
61
62 class MultiviewCase : public TestCase
63 {
64 public:
65 MultiviewCase(Context& context, const char* name, const char* description, int numSamples);
66 ~MultiviewCase();
67 void init();
68 void deinit();
69 IterateResult iterate();
70
71 private:
72 MultiviewCase(const MultiviewCase& other);
73 MultiviewCase& operator=(const MultiviewCase& other);
74 void setupFramebufferObjects();
75 void deleteFramebufferObjects();
76
77 glu::ShaderProgram* m_multiviewProgram;
78 deUint32 m_multiviewFbo;
79 deUint32 m_arrayTexture;
80
81 glu::ShaderProgram* m_finalProgram;
82
83 int m_caseIndex;
84 const int m_numSamples;
85 const int m_width;
86 const int m_height;
87 };
88
MultiviewCase(Context & context,const char * name,const char * description,int numSamples)89 MultiviewCase::MultiviewCase(Context& context, const char* name, const char* description, int numSamples)
90 : TestCase(context, name, description)
91 , m_multiviewProgram(DE_NULL)
92 , m_multiviewFbo(0)
93 , m_arrayTexture(0)
94 , m_finalProgram(DE_NULL)
95 , m_caseIndex(0)
96 , m_numSamples(numSamples)
97 , m_width(512)
98 , m_height(512)
99 {
100 }
101
~MultiviewCase()102 MultiviewCase::~MultiviewCase()
103 {
104 MultiviewCase::deinit();
105 }
106
setupFramebufferObjects()107 void MultiviewCase::setupFramebufferObjects()
108 {
109 const glw::Functions& gl = m_context.getRenderContext().getFunctions();
110
111 // First create the array texture and multiview FBO.
112
113 gl.genTextures(1, &m_arrayTexture);
114 gl.bindTexture(GL_TEXTURE_2D_ARRAY, m_arrayTexture);
115 gl.texStorage3D(GL_TEXTURE_2D_ARRAY, 1 /* num mipmaps */, GL_RGBA8, m_width / 2, m_height, 2 /* num levels */);
116 gl.texParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
117 gl.texParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
118 GLU_EXPECT_NO_ERROR(gl.getError(), "Create array texture");
119
120 gl.genFramebuffers(1, &m_multiviewFbo);
121 gl.bindFramebuffer(GL_FRAMEBUFFER, m_multiviewFbo);
122 if (m_numSamples == 1)
123 {
124 gl.framebufferTextureMultiviewOVR(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, m_arrayTexture, 0 /* mip level */,
125 0 /* base view index */, 2 /* num views */);
126 }
127 else
128 {
129 gl.framebufferTextureMultisampleMultiviewOVR(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, m_arrayTexture,
130 0 /* mip level */, m_numSamples /* samples */,
131 0 /* base view index */, 2 /* num views */);
132 }
133 GLU_EXPECT_NO_ERROR(gl.getError(), "Create multiview FBO");
134 deUint32 fboStatus = glCheckFramebufferStatus(GL_FRAMEBUFFER);
135 if (fboStatus == GL_FRAMEBUFFER_UNSUPPORTED)
136 {
137 throw tcu::NotSupportedError("Framebuffer unsupported", "", __FILE__, __LINE__);
138 }
139 else if (fboStatus != GL_FRAMEBUFFER_COMPLETE)
140 {
141 throw tcu::TestError("Failed to create framebuffer object", "", __FILE__, __LINE__);
142 }
143 }
144
deleteFramebufferObjects()145 void MultiviewCase::deleteFramebufferObjects()
146 {
147 const glw::Functions& gl = m_context.getRenderContext().getFunctions();
148 gl.deleteTextures(1, &m_arrayTexture);
149 gl.deleteFramebuffers(1, &m_multiviewFbo);
150 }
151
init()152 void MultiviewCase::init()
153 {
154 const glu::ContextInfo& contextInfo = m_context.getContextInfo();
155 bool mvsupported = contextInfo.isExtensionSupported("GL_OVR_multiview");
156 if (!mvsupported)
157 {
158 TCU_THROW(NotSupportedError, "Multiview is not supported");
159 }
160
161 if (m_numSamples > 1)
162 {
163 bool msaasupported = contextInfo.isExtensionSupported("GL_OVR_multiview_multisampled_render_to_texture");
164 if (!msaasupported)
165 {
166 TCU_THROW(NotSupportedError, "Implicit MSAA multiview is not supported");
167 }
168 }
169
170 const char* multiviewVertexShader = "#version 300 es\n"
171 "#extension GL_OVR_multiview : enable\n"
172 "layout(num_views=2) in;\n"
173 "layout(location = 0) in mediump vec4 a_position;\n"
174 "uniform mediump vec4 uColor[2];\n"
175 "out mediump vec4 vColor;\n"
176 "void main() {\n"
177 " vColor = uColor[gl_ViewID_OVR];\n"
178 " gl_Position = a_position;\n"
179 "}\n";
180
181 const char* multiviewFragmentShader = "#version 300 es\n"
182 "layout(location = 0) out mediump vec4 dEQP_FragColor;\n"
183 "in mediump vec4 vColor;\n"
184 "void main() {\n"
185 " dEQP_FragColor = vColor;\n"
186 "}\n";
187
188 m_multiviewProgram = new glu::ShaderProgram(
189 m_context.getRenderContext(), glu::makeVtxFragSources(multiviewVertexShader, multiviewFragmentShader));
190 DE_ASSERT(m_multiviewProgram);
191 if (!m_multiviewProgram->isOk())
192 {
193 m_testCtx.getLog() << *m_multiviewProgram;
194 TCU_FAIL("Failed to compile multiview shader");
195 }
196
197 // Draw the first layer on the left half of the screen and the second layer
198 // on the right half.
199 const char* finalVertexShader = "#version 300 es\n"
200 "layout(location = 0) in mediump vec4 a_position;\n"
201 "out highp vec3 vTexCoord;\n"
202 "void main() {\n"
203 " vTexCoord.x = fract(a_position.x + 1.0);\n"
204 " vTexCoord.y = .5 * (a_position.y + 1.0);\n"
205 " vTexCoord.z = a_position.x;\n"
206 " gl_Position = a_position;\n"
207 "}\n";
208
209 const char* finalFragmentShader = "#version 300 es\n"
210 "layout(location = 0) out mediump vec4 dEQP_FragColor;\n"
211 "uniform lowp sampler2DArray uArrayTexture;\n"
212 "in highp vec3 vTexCoord;\n"
213 "void main() {\n"
214 " highp vec3 uvw = vTexCoord;\n"
215 " uvw.z = floor(vTexCoord.z + 1.0);\n"
216 " dEQP_FragColor = texture(uArrayTexture, uvw);\n"
217 "}\n";
218
219 m_finalProgram = new glu::ShaderProgram(m_context.getRenderContext(),
220 glu::makeVtxFragSources(finalVertexShader, finalFragmentShader));
221 DE_ASSERT(m_finalProgram);
222 if (!m_finalProgram->isOk())
223 {
224 m_testCtx.getLog() << *m_finalProgram;
225 TCU_FAIL("Failed to compile final shader");
226 }
227
228 m_testCtx.setTestResult(QP_TEST_RESULT_PASS, "Pass");
229 GLU_CHECK_MSG("Case initialization finished");
230 }
231
deinit()232 void MultiviewCase::deinit()
233 {
234 deleteFramebufferObjects();
235 delete m_multiviewProgram;
236 m_multiviewProgram = DE_NULL;
237 delete m_finalProgram;
238 m_finalProgram = DE_NULL;
239 }
240
iterate()241 MultiviewCase::IterateResult MultiviewCase::iterate()
242 {
243 TestLog& log = m_testCtx.getLog();
244 deUint32 colorUniform = glGetUniformLocation(m_multiviewProgram->getProgram(), "uColor");
245 std::string header = "Case iteration " + de::toString(m_caseIndex + 1) + " / " + de::toString(NUM_CASE_ITERATIONS);
246 log << TestLog::Section(header, header);
247
248 DE_ASSERT(m_multiviewProgram);
249
250 // Create and bind the multiview FBO.
251
252 try
253 {
254 setupFramebufferObjects();
255 }
256 catch (tcu::NotSupportedError& e)
257 {
258 log << TestLog::Message << "ERROR: " << e.what() << "." << TestLog::EndMessage << TestLog::EndSection;
259 m_testCtx.setTestResult(QP_TEST_RESULT_NOT_SUPPORTED, "Not supported");
260 return STOP;
261 }
262 catch (tcu::InternalError& e)
263 {
264 log << TestLog::Message << "ERROR: " << e.what() << "." << TestLog::EndMessage << TestLog::EndSection;
265 m_testCtx.setTestResult(QP_TEST_RESULT_INTERNAL_ERROR, "Error");
266 return STOP;
267 }
268
269 log << TestLog::EndSection;
270
271 // Draw full screen quad into the multiview framebuffer.
272 // The quad should be instanced into both layers of the array texture.
273
274 const glw::Functions& gl = m_context.getRenderContext().getFunctions();
275 gl.bindFramebuffer(GL_FRAMEBUFFER, m_multiviewFbo);
276 gl.viewport(0, 0, m_width / 2, m_height);
277 gl.useProgram(m_multiviewProgram->getProgram());
278 gl.uniform4fv(colorUniform, 2, COLOR_VALUES);
279 gl.enableVertexAttribArray(0);
280 gl.vertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, 0, &UNIT_SQUARE[0]);
281 gl.drawArrays(GL_TRIANGLE_STRIP, 0, 4);
282
283 // Sample from the array texture to draw a quad into the backbuffer.
284
285 const int backbufferWidth = m_context.getRenderTarget().getWidth();
286 const int backbufferHeight = m_context.getRenderTarget().getHeight();
287 gl.bindFramebuffer(GL_FRAMEBUFFER, 0);
288 gl.viewport(0, 0, backbufferWidth, backbufferHeight);
289 gl.useProgram(m_finalProgram->getProgram());
290 gl.bindTexture(GL_TEXTURE_2D_ARRAY, m_arrayTexture);
291 gl.drawArrays(GL_TRIANGLE_STRIP, 0, 4);
292
293 // Read back the framebuffer, ensure that the left half is red and the
294 // right half is green.
295
296 tcu::Surface pixels(backbufferWidth, backbufferHeight);
297 glu::readPixels(m_context.getRenderContext(), 0, 0, pixels.getAccess());
298 bool failed = false;
299 for (int y = 0; y < backbufferHeight; y++)
300 {
301 for (int x = 0; x < backbufferWidth; x++)
302 {
303 tcu::RGBA pixel = pixels.getPixel(x, y);
304 if (x < backbufferWidth / 2)
305 {
306 if (pixel.getRed() != 255 || pixel.getGreen() != 0 || pixel.getBlue() != 0)
307 {
308 failed = true;
309 }
310 }
311 else if (x > backbufferWidth / 2)
312 {
313 if (pixel.getRed() != 0 || pixel.getGreen() != 255 || pixel.getBlue() != 0)
314 {
315 failed = true;
316 }
317 }
318 if (failed)
319 {
320 break;
321 }
322 }
323 }
324
325 deleteFramebufferObjects();
326
327 if (failed)
328 {
329 log << TestLog::Image("Result image", "Result image", pixels);
330 }
331
332 log << TestLog::Message << "Test result: " << (failed ? "Failed!" : "Passed!") << TestLog::EndMessage;
333
334 if (failed)
335 {
336 m_testCtx.setTestResult(QP_TEST_RESULT_FAIL, "Fail");
337 return STOP;
338 }
339
340 return (++m_caseIndex < NUM_CASE_ITERATIONS) ? CONTINUE : STOP;
341 }
342
MultiviewTests(Context & context)343 MultiviewTests::MultiviewTests(Context& context) : TestCaseGroup(context, "multiview", "Multiview Tests")
344 {
345 }
346
~MultiviewTests()347 MultiviewTests::~MultiviewTests()
348 {
349 }
350
init()351 void MultiviewTests::init()
352 {
353 addChild(new MultiviewCase(m_context, "samples_1", "Multiview test without multisampling", 1));
354 addChild(new MultiviewCase(m_context, "samples_2", "Multiview test with MSAAx2", 2));
355 addChild(new MultiviewCase(m_context, "samples_4", "Multiview test without MSAAx4", 4));
356 }
357
358 } // namespace Functional
359 } // namespace gles3
360 } // namespace deqp
361