1 /*-------------------------------------------------------------------------
2 * drawElements Quality Program OpenGL ES 3.1 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 Tessellation and geometry shader interaction stress tests.
22 *//*--------------------------------------------------------------------*/
23
24 #include "es31sTessellationGeometryInteractionTests.hpp"
25
26 #include "tcuTestLog.hpp"
27 #include "tcuRenderTarget.hpp"
28 #include "tcuSurface.hpp"
29 #include "tcuTextureUtil.hpp"
30 #include "gluRenderContext.hpp"
31 #include "gluShaderProgram.hpp"
32 #include "gluContextInfo.hpp"
33 #include "gluObjectWrapper.hpp"
34 #include "gluPixelTransfer.hpp"
35 #include "glwFunctions.hpp"
36 #include "glwEnums.hpp"
37 #include "deStringUtil.hpp"
38 #include "deUniquePtr.hpp"
39
40 #include <sstream>
41
42 namespace deqp
43 {
44 namespace gles31
45 {
46 namespace Stress
47 {
48 namespace
49 {
50
51 class AllowedRenderFailureException : public std::runtime_error
52 {
53 public:
AllowedRenderFailureException(const char * message)54 AllowedRenderFailureException (const char* message) : std::runtime_error(message) { }
55 };
56
57 class GridRenderCase : public TestCase
58 {
59 public:
60 enum Flags
61 {
62 FLAG_TESSELLATION_MAX_SPEC = 0x0001,
63 FLAG_TESSELLATION_MAX_IMPLEMENTATION = 0x0002,
64 FLAG_GEOMETRY_MAX_SPEC = 0x0004,
65 FLAG_GEOMETRY_MAX_IMPLEMENTATION = 0x0008,
66 FLAG_GEOMETRY_INVOCATIONS_MAX_SPEC = 0x0010,
67 FLAG_GEOMETRY_INVOCATIONS_MAX_IMPLEMENTATION = 0x0020,
68 };
69
70 GridRenderCase (Context& context, const char* name, const char* description, int flags);
71 ~GridRenderCase (void);
72
73 private:
74 void init (void);
75 void deinit (void);
76 IterateResult iterate (void);
77
78 void renderTo (std::vector<tcu::Surface>& dst);
79 bool verifyResultLayer (int layerNdx, const tcu::Surface& dst);
80
81 const char* getVertexSource (void);
82 const char* getFragmentSource (void);
83 std::string getTessellationControlSource (int tessLevel);
84 std::string getTessellationEvaluationSource (int tessLevel);
85 std::string getGeometryShaderSource (int numPrimitives, int numInstances);
86
87 enum
88 {
89 RENDER_SIZE = 256
90 };
91
92 const int m_flags;
93
94 glu::ShaderProgram* m_program;
95 int m_numLayers;
96 };
97
GridRenderCase(Context & context,const char * name,const char * description,int flags)98 GridRenderCase::GridRenderCase (Context& context, const char* name, const char* description, int flags)
99 : TestCase (context, name, description)
100 , m_flags (flags)
101 , m_program (DE_NULL)
102 , m_numLayers (1)
103 {
104 DE_ASSERT(((m_flags & FLAG_TESSELLATION_MAX_SPEC) == 0) || ((m_flags & FLAG_TESSELLATION_MAX_IMPLEMENTATION) == 0));
105 DE_ASSERT(((m_flags & FLAG_GEOMETRY_MAX_SPEC) == 0) || ((m_flags & FLAG_GEOMETRY_MAX_IMPLEMENTATION) == 0));
106 DE_ASSERT(((m_flags & FLAG_GEOMETRY_INVOCATIONS_MAX_SPEC) == 0) || ((m_flags & FLAG_GEOMETRY_INVOCATIONS_MAX_IMPLEMENTATION) == 0));
107 }
108
~GridRenderCase(void)109 GridRenderCase::~GridRenderCase (void)
110 {
111 deinit();
112 }
113
init(void)114 void GridRenderCase::init (void)
115 {
116 const glw::Functions& gl = m_context.getRenderContext().getFunctions();
117
118 // Requirements
119
120 if (!m_context.getContextInfo().isExtensionSupported("GL_EXT_tessellation_shader") ||
121 !m_context.getContextInfo().isExtensionSupported("GL_EXT_geometry_shader"))
122 throw tcu::NotSupportedError("Test requires GL_EXT_tessellation_shader and GL_EXT_geometry_shader extensions");
123
124 if (m_context.getRenderTarget().getWidth() < RENDER_SIZE ||
125 m_context.getRenderTarget().getHeight() < RENDER_SIZE)
126 throw tcu::NotSupportedError("Test requires " + de::toString<int>(RENDER_SIZE) + "x" + de::toString<int>(RENDER_SIZE) + " or larger render target.");
127
128 // Log
129
130 m_testCtx.getLog()
131 << tcu::TestLog::Message
132 << "Testing tessellation and geometry shaders that output a large number of primitives.\n"
133 << getDescription()
134 << tcu::TestLog::EndMessage;
135
136 // Gen program
137 {
138 glu::ProgramSources sources;
139 int tessGenLevel = -1;
140
141 sources << glu::VertexSource(getVertexSource())
142 << glu::FragmentSource(getFragmentSource());
143
144 // Tessellation limits
145 {
146 if (m_flags & FLAG_TESSELLATION_MAX_IMPLEMENTATION)
147 {
148 gl.getIntegerv(GL_MAX_TESS_GEN_LEVEL, &tessGenLevel);
149 GLU_EXPECT_NO_ERROR(gl.getError(), "query tessellation limits");
150 }
151 else if (m_flags & FLAG_TESSELLATION_MAX_SPEC)
152 {
153 tessGenLevel = 64;
154 }
155 else
156 {
157 tessGenLevel = 5;
158 }
159
160 m_testCtx.getLog()
161 << tcu::TestLog::Message
162 << "Tessellation level: " << tessGenLevel << ", mode = quad.\n"
163 << "\tEach input patch produces " << (tessGenLevel*tessGenLevel) << " (" << (tessGenLevel*tessGenLevel*2) << " triangles)\n"
164 << tcu::TestLog::EndMessage;
165
166 sources << glu::TessellationControlSource(getTessellationControlSource(tessGenLevel))
167 << glu::TessellationEvaluationSource(getTessellationEvaluationSource(tessGenLevel));
168 }
169
170 // Geometry limits
171 {
172 int geometryOutputComponents = -1;
173 int geometryOutputVertices = -1;
174 int geometryTotalOutputComponents = -1;
175 int geometryShaderInvocations = -1;
176 bool logGeometryLimits = false;
177 bool logInvocationLimits = false;
178
179 if (m_flags & FLAG_GEOMETRY_MAX_IMPLEMENTATION)
180 {
181 m_testCtx.getLog() << tcu::TestLog::Message << "Using implementation maximum geometry shader output limits." << tcu::TestLog::EndMessage;
182
183 gl.getIntegerv(GL_MAX_GEOMETRY_OUTPUT_COMPONENTS, &geometryOutputComponents);
184 gl.getIntegerv(GL_MAX_GEOMETRY_OUTPUT_VERTICES, &geometryOutputVertices);
185 gl.getIntegerv(GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS, &geometryTotalOutputComponents);
186 GLU_EXPECT_NO_ERROR(gl.getError(), "query geometry limits");
187
188 logGeometryLimits = true;
189 }
190 else if (m_flags & FLAG_GEOMETRY_MAX_SPEC)
191 {
192 m_testCtx.getLog() << tcu::TestLog::Message << "Using geometry shader extension minimum maximum output limits." << tcu::TestLog::EndMessage;
193
194 geometryOutputComponents = 128;
195 geometryOutputVertices = 256;
196 geometryTotalOutputComponents = 1024;
197 logGeometryLimits = true;
198 }
199 else
200 {
201 geometryOutputComponents = 128;
202 geometryOutputVertices = 16;
203 geometryTotalOutputComponents = 1024;
204 }
205
206 if (m_flags & FLAG_GEOMETRY_INVOCATIONS_MAX_IMPLEMENTATION)
207 {
208 gl.getIntegerv(GL_MAX_GEOMETRY_SHADER_INVOCATIONS, &geometryShaderInvocations);
209 GLU_EXPECT_NO_ERROR(gl.getError(), "query geometry invocation limits");
210
211 logInvocationLimits = true;
212 }
213 else if (m_flags & FLAG_GEOMETRY_INVOCATIONS_MAX_SPEC)
214 {
215 geometryShaderInvocations = 32;
216 logInvocationLimits = true;
217 }
218 else
219 {
220 geometryShaderInvocations = 4;
221 }
222
223 if (logGeometryLimits || logInvocationLimits)
224 {
225 tcu::MessageBuilder msg(&m_testCtx.getLog());
226
227 msg << "Geometry shader, targeting following limits:\n";
228
229 if (logGeometryLimits)
230 msg << "\tGL_MAX_GEOMETRY_OUTPUT_COMPONENTS = " << geometryOutputComponents << "\n"
231 << "\tGL_MAX_GEOMETRY_OUTPUT_VERTICES = " << geometryOutputVertices << "\n"
232 << "\tGL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS = " << geometryTotalOutputComponents << "\n";
233
234 if (logInvocationLimits)
235 msg << "\tGL_MAX_GEOMETRY_SHADER_INVOCATIONS = " << geometryShaderInvocations;
236
237 msg << tcu::TestLog::EndMessage;
238 }
239
240
241 {
242 const int numComponentsPerVertex = 8; // vec4 pos, vec4 color
243
244 // If FLAG_GEOMETRY_SEPARATE_PRIMITIVES is not set, geometry shader fills a rectangle area in slices.
245 // Each slice is a triangle strip and is generated by a single shader invocation.
246 // One slice with 4 segment ends (nodes) and 3 segments:
247 // .__.__.__.
248 // |\ |\ |\ |
249 // |_\|_\|_\|
250
251 const int numSliceNodesComponentLimit = geometryTotalOutputComponents / (2 * numComponentsPerVertex); // each node 2 vertices
252 const int numSliceNodesOutputLimit = geometryOutputVertices / 2; // each node 2 vertices
253 const int numSliceNodes = de::min(numSliceNodesComponentLimit, numSliceNodesOutputLimit);
254
255 const int numVerticesPerInvocation = numSliceNodes * 2;
256 const int numPrimitivesPerInvocation = (numSliceNodes - 1) * 2;
257
258 const int geometryVerticesPerPrimitive = numVerticesPerInvocation * geometryShaderInvocations;
259 const int geometryPrimitivesOutPerPrimitive = numPrimitivesPerInvocation * geometryShaderInvocations;
260
261 m_testCtx.getLog()
262 << tcu::TestLog::Message
263 << "Geometry shader:\n"
264 << "\tTotal output vertex count per invocation: " << (numVerticesPerInvocation) << "\n"
265 << "\tTotal output primitive count per invocation: " << (numPrimitivesPerInvocation) << "\n"
266 << "\tNumber of invocations per primitive: " << geometryShaderInvocations << "\n"
267 << "\tTotal output vertex count per input primitive: " << (geometryVerticesPerPrimitive) << "\n"
268 << "\tTotal output primitive count per input primitive: " << (geometryPrimitivesOutPerPrimitive) << "\n"
269 << tcu::TestLog::EndMessage;
270
271 sources << glu::GeometrySource(getGeometryShaderSource(numPrimitivesPerInvocation, geometryShaderInvocations));
272
273 m_testCtx.getLog()
274 << tcu::TestLog::Message
275 << "Program:\n"
276 << "\tTotal program output vertices count per input patch: " << (tessGenLevel*tessGenLevel*2 * geometryVerticesPerPrimitive) << "\n"
277 << "\tTotal program output primitive count per input patch: " << (tessGenLevel*tessGenLevel*2 * geometryPrimitivesOutPerPrimitive) << "\n"
278 << tcu::TestLog::EndMessage;
279 }
280 }
281
282 m_program = new glu::ShaderProgram(m_context.getRenderContext(), sources);
283 m_testCtx.getLog() << *m_program;
284 if (!m_program->isOk())
285 throw tcu::TestError("failed to build program");
286 }
287 }
288
deinit(void)289 void GridRenderCase::deinit (void)
290 {
291 delete m_program;
292 m_program = DE_NULL;
293 }
294
iterate(void)295 GridRenderCase::IterateResult GridRenderCase::iterate (void)
296 {
297 std::vector<tcu::Surface> renderedLayers (m_numLayers);
298 bool allLayersOk = true;
299
300 for (int ndx = 0; ndx < m_numLayers; ++ndx)
301 renderedLayers[ndx].setSize(RENDER_SIZE, RENDER_SIZE);
302
303 m_testCtx.getLog() << tcu::TestLog::Message << "Rendering single point at the origin. Expecting yellow and green colored grid-like image. (High-frequency grid may appear unicolored)." << tcu::TestLog::EndMessage;
304
305 try
306 {
307 renderTo(renderedLayers);
308 }
309 catch (const AllowedRenderFailureException& ex)
310 {
311 // Got accepted failure
312 m_testCtx.getLog()
313 << tcu::TestLog::Message
314 << "Could not render, reason: " << ex.what() << "\n"
315 << "Failure is allowed."
316 << tcu::TestLog::EndMessage;
317
318 m_testCtx.setTestResult(QP_TEST_RESULT_PASS, "Pass");
319 return STOP;
320 }
321
322 for (int ndx = 0; ndx < m_numLayers; ++ndx)
323 allLayersOk &= verifyResultLayer(ndx, renderedLayers[ndx]);
324
325 if (allLayersOk)
326 m_testCtx.setTestResult(QP_TEST_RESULT_PASS, "Pass");
327 else
328 m_testCtx.setTestResult(QP_TEST_RESULT_FAIL, "Image verification failed");
329 return STOP;
330 }
331
renderTo(std::vector<tcu::Surface> & dst)332 void GridRenderCase::renderTo (std::vector<tcu::Surface>& dst)
333 {
334 const glw::Functions& gl = m_context.getRenderContext().getFunctions();
335 const int positionLocation = gl.getAttribLocation(m_program->getProgram(), "a_position");
336 const glu::VertexArray vao (m_context.getRenderContext());
337
338 if (positionLocation == -1)
339 throw tcu::TestError("Attribute a_position location was -1");
340
341 gl.viewport(0, 0, dst.front().getWidth(), dst.front().getHeight());
342 gl.clearColor(0.0f, 0.0f, 0.0f, 1.0f);
343 GLU_EXPECT_NO_ERROR(gl.getError(), "viewport");
344
345 gl.bindVertexArray(*vao);
346 GLU_EXPECT_NO_ERROR(gl.getError(), "bind vao");
347
348 gl.useProgram(m_program->getProgram());
349 GLU_EXPECT_NO_ERROR(gl.getError(), "use program");
350
351 gl.patchParameteri(GL_PATCH_VERTICES, 1);
352 GLU_EXPECT_NO_ERROR(gl.getError(), "set patch param");
353
354 gl.vertexAttrib4f(positionLocation, 0.0f, 0.0f, 0.0f, 1.0f);
355
356 // clear viewport
357 gl.clear(GL_COLOR_BUFFER_BIT);
358
359 // draw
360 {
361 glw::GLenum glerror;
362
363 gl.drawArrays(GL_PATCHES, 0, 1);
364
365 // allow always OOM
366 glerror = gl.getError();
367 if (glerror == GL_OUT_OF_MEMORY)
368 throw AllowedRenderFailureException("got GL_OUT_OF_MEMORY while drawing");
369
370 GLU_EXPECT_NO_ERROR(glerror, "draw patches");
371 }
372
373 // Read layers
374
375 glu::readPixels(m_context.getRenderContext(), 0, 0, dst.front().getAccess());
376 GLU_EXPECT_NO_ERROR(gl.getError(), "read pixels");
377 }
378
verifyResultLayer(int layerNdx,const tcu::Surface & image)379 bool GridRenderCase::verifyResultLayer (int layerNdx, const tcu::Surface& image)
380 {
381 tcu::Surface errorMask (image.getWidth(), image.getHeight());
382 bool foundError = false;
383
384 tcu::clear(errorMask.getAccess(), tcu::Vec4(0.0f, 1.0f, 0.0f, 1.0f));
385
386 m_testCtx.getLog() << tcu::TestLog::Message << "Verifying output layer " << layerNdx << tcu::TestLog::EndMessage;
387
388 for (int y = 0; y < image.getHeight(); ++y)
389 for (int x = 0; x < image.getWidth(); ++x)
390 {
391 const int threshold = 8;
392 const tcu::RGBA color = image.getPixel(x, y);
393
394 // Color must be a linear combination of green and yellow
395 if (color.getGreen() < 255 - threshold || color.getBlue() > threshold)
396 {
397 errorMask.setPixel(x, y, tcu::RGBA::red());
398 foundError = true;
399 }
400 }
401
402 if (!foundError)
403 {
404 m_testCtx.getLog()
405 << tcu::TestLog::Message << "Image valid." << tcu::TestLog::EndMessage
406 << tcu::TestLog::ImageSet("ImageVerification", "Image verification")
407 << tcu::TestLog::Image("Result", "Rendered result", image.getAccess())
408 << tcu::TestLog::EndImageSet;
409 return true;
410 }
411 else
412 {
413 m_testCtx.getLog()
414 << tcu::TestLog::Message << "Image verification failed, found invalid pixels." << tcu::TestLog::EndMessage
415 << tcu::TestLog::ImageSet("ImageVerification", "Image verification")
416 << tcu::TestLog::Image("Result", "Rendered result", image.getAccess())
417 << tcu::TestLog::Image("ErrorMask", "Error mask", errorMask.getAccess())
418 << tcu::TestLog::EndImageSet;
419 return false;
420 }
421 }
422
getVertexSource(void)423 const char* GridRenderCase::getVertexSource (void)
424 {
425 return "#version 310 es\n"
426 "in highp vec4 a_position;\n"
427 "void main (void)\n"
428 "{\n"
429 " gl_Position = a_position;\n"
430 "}\n";
431 }
432
getFragmentSource(void)433 const char* GridRenderCase::getFragmentSource (void)
434 {
435 return "#version 310 es\n"
436 "flat in mediump vec4 v_color;\n"
437 "layout(location = 0) out mediump vec4 fragColor;\n"
438 "void main (void)\n"
439 "{\n"
440 " fragColor = v_color;\n"
441 "}\n";
442 }
443
getTessellationControlSource(int tessLevel)444 std::string GridRenderCase::getTessellationControlSource (int tessLevel)
445 {
446 std::ostringstream buf;
447
448 buf << "#version 310 es\n"
449 "#extension GL_EXT_tessellation_shader : require\n"
450 "layout(vertices=1) out;\n"
451 "\n"
452 "void main()\n"
453 "{\n"
454 " gl_out[gl_InvocationID].gl_Position = gl_in[gl_InvocationID].gl_Position;\n"
455 " gl_TessLevelOuter[0] = " << tessLevel << ".0;\n"
456 " gl_TessLevelOuter[1] = " << tessLevel << ".0;\n"
457 " gl_TessLevelOuter[2] = " << tessLevel << ".0;\n"
458 " gl_TessLevelOuter[3] = " << tessLevel << ".0;\n"
459 " gl_TessLevelInner[0] = " << tessLevel << ".0;\n"
460 " gl_TessLevelInner[1] = " << tessLevel << ".0;\n"
461 "}\n";
462
463 return buf.str();
464 }
465
getTessellationEvaluationSource(int tessLevel)466 std::string GridRenderCase::getTessellationEvaluationSource (int tessLevel)
467 {
468 std::ostringstream buf;
469
470 buf << "#version 310 es\n"
471 "#extension GL_EXT_tessellation_shader : require\n"
472 "layout(quads) in;\n"
473 "\n"
474 "out mediump ivec2 v_tessellationGridPosition;\n"
475 "\n"
476 "// note: No need to use precise gl_Position since position does not depend on order\n"
477 "void main (void)\n"
478 "{\n"
479 " // Fill the whole viewport\n"
480 " gl_Position = vec4(gl_TessCoord.x * 2.0 - 1.0, gl_TessCoord.y * 2.0 - 1.0, 0.0, 1.0);\n"
481 " // Calculate position in tessellation grid\n"
482 " v_tessellationGridPosition = ivec2(round(gl_TessCoord.xy * float(" << tessLevel << ")));\n"
483 "}\n";
484
485 return buf.str();
486 }
487
getGeometryShaderSource(int numPrimitives,int numInstances)488 std::string GridRenderCase::getGeometryShaderSource (int numPrimitives, int numInstances)
489 {
490 std::ostringstream buf;
491
492 buf << "#version 310 es\n"
493 "#extension GL_EXT_geometry_shader : require\n"
494 "layout(triangles, invocations=" << numInstances << ") in;\n"
495 "layout(triangle_strip, max_vertices=" << (numPrimitives + 2) << ") out;\n"
496 "\n"
497 "in mediump ivec2 v_tessellationGridPosition[];\n"
498 "flat out highp vec4 v_color;\n"
499 "\n"
500 "void main ()\n"
501 "{\n"
502 " const float equalThreshold = 0.001;\n"
503 " const float gapOffset = 0.0001; // subdivision performed by the geometry shader might produce gaps. Fill potential gaps by enlarging the output slice a little.\n"
504 "\n"
505 " // Input triangle is generated from an axis-aligned rectangle by splitting it in half\n"
506 " // Original rectangle can be found by finding the bounding AABB of the triangle\n"
507 " vec4 aabb = vec4(min(gl_in[0].gl_Position.x, min(gl_in[1].gl_Position.x, gl_in[2].gl_Position.x)),\n"
508 " min(gl_in[0].gl_Position.y, min(gl_in[1].gl_Position.y, gl_in[2].gl_Position.y)),\n"
509 " max(gl_in[0].gl_Position.x, max(gl_in[1].gl_Position.x, gl_in[2].gl_Position.x)),\n"
510 " max(gl_in[0].gl_Position.y, max(gl_in[1].gl_Position.y, gl_in[2].gl_Position.y)));\n"
511 "\n"
512 " // Location in tessellation grid\n"
513 " ivec2 gridPosition = ivec2(min(v_tessellationGridPosition[0], min(v_tessellationGridPosition[1], v_tessellationGridPosition[2])));\n"
514 "\n"
515 " // Which triangle of the two that split the grid cell\n"
516 " int numVerticesOnBottomEdge = 0;\n"
517 " for (int ndx = 0; ndx < 3; ++ndx)\n"
518 " if (abs(gl_in[ndx].gl_Position.y - aabb.w) < equalThreshold)\n"
519 " ++numVerticesOnBottomEdge;\n"
520 " bool isBottomTriangle = numVerticesOnBottomEdge == 2;\n"
521 "\n"
522 " // Fill the input area with slices\n"
523 " // Upper triangle produces slices only to the upper half of the quad and vice-versa\n"
524 " float triangleOffset = (isBottomTriangle) ? ((aabb.w + aabb.y) / 2.0) : (aabb.y);\n"
525 " // Each slice is a invocation\n"
526 " float sliceHeight = (aabb.w - aabb.y) / float(2 * " << numInstances << ");\n"
527 " float invocationOffset = float(gl_InvocationID) * sliceHeight;\n"
528 "\n"
529 " vec4 outputSliceArea;\n"
530 " outputSliceArea.x = aabb.x - gapOffset;\n"
531 " outputSliceArea.y = triangleOffset + invocationOffset - gapOffset;\n"
532 " outputSliceArea.z = aabb.z + gapOffset;\n"
533 " outputSliceArea.w = triangleOffset + invocationOffset + sliceHeight + gapOffset;\n""\n"
534 " // Draw slice\n"
535 " for (int ndx = 0; ndx < " << ((numPrimitives+2)/2) << "; ++ndx)\n"
536 " {\n"
537 " vec4 green = vec4(0.0, 1.0, 0.0, 1.0);\n"
538 " vec4 yellow = vec4(1.0, 1.0, 0.0, 1.0);\n"
539 " vec4 outputColor = (((gl_InvocationID + ndx) % 2) == 0) ? (green) : (yellow);\n"
540 " float xpos = mix(outputSliceArea.x, outputSliceArea.z, float(ndx) / float(" << (numPrimitives/2) << "));\n"
541 "\n"
542 " gl_Position = vec4(xpos, outputSliceArea.y, 0.0, 1.0);\n"
543 " v_color = outputColor;\n"
544 " EmitVertex();\n"
545 "\n"
546 " gl_Position = vec4(xpos, outputSliceArea.w, 0.0, 1.0);\n"
547 " v_color = outputColor;\n"
548 " EmitVertex();\n"
549 " }\n"
550 "}\n";
551
552 return buf.str();
553 }
554
555 } // anonymous
556
TessellationGeometryInteractionTests(Context & context)557 TessellationGeometryInteractionTests::TessellationGeometryInteractionTests (Context& context)
558 : TestCaseGroup(context, "tessellation_geometry_interaction", "Tessellation and geometry shader interaction stress tests")
559 {
560 }
561
~TessellationGeometryInteractionTests(void)562 TessellationGeometryInteractionTests::~TessellationGeometryInteractionTests (void)
563 {
564 }
565
init(void)566 void TessellationGeometryInteractionTests::init (void)
567 {
568 tcu::TestCaseGroup* const multilimitGroup = new tcu::TestCaseGroup(m_testCtx, "render_multiple_limits", "Various render tests");
569
570 addChild(multilimitGroup);
571
572 // .render_multiple_limits
573 {
574 static const struct LimitCaseDef
575 {
576 const char* name;
577 const char* desc;
578 int flags;
579 } cases[] =
580 {
581 // Test multiple limits at the same time
582
583 {
584 "output_required_max_tessellation_max_geometry",
585 "Minimum maximum tessellation level and geometry shader output vertices",
586 GridRenderCase::FLAG_TESSELLATION_MAX_SPEC | GridRenderCase::FLAG_GEOMETRY_MAX_SPEC
587 },
588 {
589 "output_implementation_max_tessellation_max_geometry",
590 "Maximum tessellation level and geometry shader output vertices supported by the implementation",
591 GridRenderCase::FLAG_TESSELLATION_MAX_IMPLEMENTATION | GridRenderCase::FLAG_GEOMETRY_MAX_IMPLEMENTATION
592 },
593 {
594 "output_required_max_tessellation_max_invocations",
595 "Minimum maximum tessellation level and geometry shader invocations",
596 GridRenderCase::FLAG_TESSELLATION_MAX_SPEC | GridRenderCase::FLAG_GEOMETRY_INVOCATIONS_MAX_SPEC
597 },
598 {
599 "output_implementation_max_tessellation_max_invocations",
600 "Maximum tessellation level and geometry shader invocations supported by the implementation",
601 GridRenderCase::FLAG_TESSELLATION_MAX_IMPLEMENTATION | GridRenderCase::FLAG_GEOMETRY_INVOCATIONS_MAX_IMPLEMENTATION
602 },
603 {
604 "output_required_max_geometry_max_invocations",
605 "Minimum maximum geometry shader output vertices and invocations",
606 GridRenderCase::FLAG_GEOMETRY_MAX_SPEC | GridRenderCase::FLAG_GEOMETRY_INVOCATIONS_MAX_SPEC
607 },
608 {
609 "output_implementation_max_geometry_max_invocations",
610 "Maximum geometry shader output vertices and invocations invocations supported by the implementation",
611 GridRenderCase::FLAG_GEOMETRY_MAX_IMPLEMENTATION | GridRenderCase::FLAG_GEOMETRY_INVOCATIONS_MAX_IMPLEMENTATION
612 },
613
614 // Test all limits simultaneously
615 {
616 "output_max_required",
617 "Output minimum maximum number of vertices",
618 GridRenderCase::FLAG_TESSELLATION_MAX_SPEC | GridRenderCase::FLAG_GEOMETRY_MAX_SPEC | GridRenderCase::FLAG_GEOMETRY_INVOCATIONS_MAX_SPEC
619 },
620 {
621 "output_max_implementation",
622 "Output maximum number of vertices supported by the implementation",
623 GridRenderCase::FLAG_TESSELLATION_MAX_IMPLEMENTATION | GridRenderCase::FLAG_GEOMETRY_MAX_IMPLEMENTATION | GridRenderCase::FLAG_GEOMETRY_INVOCATIONS_MAX_IMPLEMENTATION
624 },
625 };
626
627 for (int ndx = 0; ndx < DE_LENGTH_OF_ARRAY(cases); ++ndx)
628 multilimitGroup->addChild(new GridRenderCase(m_context, cases[ndx].name, cases[ndx].desc, cases[ndx].flags));
629 }
630 }
631
632 } // Stress
633 } // gles31
634 } // deqp
635