1 /*------------------------------------------------------------------------
2 * Vulkan Conformance Tests
3 * ------------------------
4 *
5 * Copyright (c) 2015 The Khronos Group Inc.
6 * Copyright (c) 2015 Samsung Electronics Co., Ltd.
7 * Copyright (c) 2016 The Android Open Source Project
8 *
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
12 *
13 * http://www.apache.org/licenses/LICENSE-2.0
14 *
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 *
21 *//*!
22 * \file
23 * \brief Shader discard statement tests.
24 *//*--------------------------------------------------------------------*/
25
26 #include "vktShaderRenderDiscardTests.hpp"
27 #include "vktShaderRender.hpp"
28 #include "tcuStringTemplate.hpp"
29 #include "gluTexture.hpp"
30
31 #include <string>
32
33 using tcu::StringTemplate;
34
35 namespace vkt
36 {
37 namespace sr
38 {
39 namespace
40 {
41
42 class SamplerUniformSetup : public UniformSetup
43 {
44 public:
SamplerUniformSetup(bool useSampler)45 SamplerUniformSetup (bool useSampler)
46 : m_useSampler(useSampler)
47 {}
48
setup(ShaderRenderCaseInstance & instance,const tcu::Vec4 &) const49 virtual void setup (ShaderRenderCaseInstance& instance, const tcu::Vec4&) const
50 {
51 instance.useUniform(0u, UI_ONE);
52 instance.useUniform(1u, UI_TWO);
53 if (m_useSampler)
54 instance.useSampler(2u, 0u); // To the uniform binding location 2 bind the texture 0
55 }
56
57 private:
58 const bool m_useSampler;
59 };
60
61
62 class ShaderDiscardCaseInstance : public ShaderRenderCaseInstance
63 {
64 public:
65 ShaderDiscardCaseInstance (Context& context,
66 bool isVertexCase,
67 const ShaderEvaluator& evaluator,
68 const UniformSetup& uniformSetup,
69 bool usesTexture,
70 bool fuzzyCompare);
71 virtual ~ShaderDiscardCaseInstance (void);
72 };
73
ShaderDiscardCaseInstance(Context & context,bool isVertexCase,const ShaderEvaluator & evaluator,const UniformSetup & uniformSetup,bool usesTexture,bool fuzzyCompare)74 ShaderDiscardCaseInstance::ShaderDiscardCaseInstance (Context& context,
75 bool isVertexCase,
76 const ShaderEvaluator& evaluator,
77 const UniformSetup& uniformSetup,
78 bool usesTexture,
79 bool fuzzyCompare)
80 : ShaderRenderCaseInstance (context, isVertexCase, evaluator, uniformSetup, DE_NULL, IMAGE_BACKING_MODE_REGULAR, static_cast<deUint32>(GRID_SIZE_DEFAULTS), fuzzyCompare)
81 {
82 if (usesTexture)
83 {
84 de::SharedPtr<TextureBinding> brickTexture(new TextureBinding(m_context.getTestContext().getArchive(),
85 "vulkan/data/brick.png",
86 TextureBinding::TYPE_2D,
87 tcu::Sampler(tcu::Sampler::CLAMP_TO_EDGE,
88 tcu::Sampler::CLAMP_TO_EDGE,
89 tcu::Sampler::CLAMP_TO_EDGE,
90 tcu::Sampler::LINEAR,
91 tcu::Sampler::LINEAR,
92 0.0f,
93 true,
94 tcu::Sampler::COMPAREMODE_NONE,
95 0,
96 tcu::Vec4(0.0f, 0.0f, 0.0f, 0.0f),
97 true)));
98 m_textures.push_back(brickTexture);
99 }
100 }
101
~ShaderDiscardCaseInstance(void)102 ShaderDiscardCaseInstance::~ShaderDiscardCaseInstance (void)
103 {
104 }
105
106 class ShaderDiscardCase : public ShaderRenderCase
107 {
108 public:
109 ShaderDiscardCase (tcu::TestContext& testCtx,
110 const char* name,
111 const char* shaderSource,
112 const ShaderEvalFunc evalFunc,
113 bool usesTexture,
114 bool fuzzyCompare,
115 bool demote);
createInstance(Context & context) const116 virtual TestInstance* createInstance (Context& context) const
117 {
118 DE_ASSERT(m_evaluator != DE_NULL);
119 DE_ASSERT(m_uniformSetup != DE_NULL);
120 return new ShaderDiscardCaseInstance(context, m_isVertexCase, *m_evaluator, *m_uniformSetup, m_usesTexture, m_fuzzyCompare);
121 }
122
123 virtual void checkSupport (Context& context) const;
124
125 private:
126 const bool m_usesTexture;
127 const bool m_fuzzyCompare;
128 #ifndef CTS_USES_VULKANSC
129 const bool m_demote;
130 #endif // CTS_USES_VULKANSC
131 };
132
ShaderDiscardCase(tcu::TestContext & testCtx,const char * name,const char * shaderSource,const ShaderEvalFunc evalFunc,bool usesTexture,bool fuzzyCompare,bool demote)133 ShaderDiscardCase::ShaderDiscardCase (tcu::TestContext& testCtx,
134 const char* name,
135 const char* shaderSource,
136 const ShaderEvalFunc evalFunc,
137 bool usesTexture,
138 bool fuzzyCompare,
139 bool demote)
140 : ShaderRenderCase (testCtx, name, false, evalFunc, new SamplerUniformSetup(usesTexture), DE_NULL)
141 , m_usesTexture (usesTexture)
142 , m_fuzzyCompare (fuzzyCompare)
143 #ifndef CTS_USES_VULKANSC
144 , m_demote(demote)
145 #endif // CTS_USES_VULKANSC
146 {
147 #ifdef CTS_USES_VULKANSC
148 DE_UNREF(demote);
149 #endif // CTS_USES_VULKANSC
150
151 m_fragShaderSource = shaderSource;
152 m_vertShaderSource =
153 "#version 310 es\n"
154 "layout(location=0) in highp vec4 a_position;\n"
155 "layout(location=1) in highp vec4 a_coords;\n"
156 "layout(location=2) in highp vec4 a_one;\n"
157 "layout(location=0) out mediump vec4 v_color;\n"
158 "layout(location=1) out mediump vec4 v_coords;\n\n"
159 "layout(location=2) out mediump vec4 v_one;\n"
160 "void main (void)\n"
161 "{\n"
162 " gl_Position = a_position;\n"
163 " v_color = vec4(a_coords.xyz, 1.0);\n"
164 " v_coords = a_coords;\n"
165 " v_one = a_one;\n"
166 "}\n";
167 }
168
checkSupport(Context & context) const169 void ShaderDiscardCase::checkSupport(Context& context) const
170 {
171 #ifndef CTS_USES_VULKANSC
172 if (m_demote && !context.getShaderDemoteToHelperInvocationFeatures().shaderDemoteToHelperInvocation)
173 TCU_THROW(NotSupportedError, "VK_EXT_shader_demote_to_helper_invocation not supported");
174 #else
175 DE_UNREF(context);
176 #endif // CTS_USES_VULKANSC
177 }
178
179 enum DiscardMode
180 {
181 DISCARDMODE_ALWAYS = 0,
182 DISCARDMODE_NEVER,
183 DISCARDMODE_UNIFORM,
184 DISCARDMODE_DYNAMIC,
185 DISCARDMODE_TEXTURE,
186 DISCARDMODE_DERIV,
187
188 DISCARDMODE_LAST
189 };
190
191 enum DiscardTemplate
192 {
193 DISCARDTEMPLATE_MAIN_BASIC = 0,
194 DISCARDTEMPLATE_FUNCTION_BASIC,
195 DISCARDTEMPLATE_MAIN_STATIC_LOOP,
196 DISCARDTEMPLATE_MAIN_DYNAMIC_LOOP,
197 DISCARDTEMPLATE_FUNCTION_STATIC_LOOP,
198
199 DISCARDTEMPLATE_LAST
200 };
201
202 // Evaluation functions
evalDiscardAlways(ShaderEvalContext & c)203 inline void evalDiscardAlways (ShaderEvalContext& c) { c.discard(); }
evalDiscardNever(ShaderEvalContext & c)204 inline void evalDiscardNever (ShaderEvalContext& c) { c.color.xyz() = c.coords.swizzle(0,1,2); }
evalDiscardDynamic(ShaderEvalContext & c)205 inline void evalDiscardDynamic (ShaderEvalContext& c) { c.color.xyz() = c.coords.swizzle(0,1,2); if (c.coords.x()+c.coords.y() > 0.0f) c.discard(); }
206
evalDiscardTexture(ShaderEvalContext & c)207 inline void evalDiscardTexture (ShaderEvalContext& c)
208 {
209 c.color.xyz() = c.coords.swizzle(0,1,2);
210 if (c.texture2D(0, c.coords.swizzle(0,1) * 0.25f + 0.5f).x() < 0.7f)
211 c.discard();
212 }
213
getEvalFunc(DiscardMode mode)214 static ShaderEvalFunc getEvalFunc (DiscardMode mode)
215 {
216 switch (mode)
217 {
218 case DISCARDMODE_ALWAYS: return evalDiscardAlways;
219 case DISCARDMODE_NEVER: return evalDiscardNever;
220 case DISCARDMODE_UNIFORM: return evalDiscardAlways;
221 case DISCARDMODE_DYNAMIC: return evalDiscardDynamic;
222 case DISCARDMODE_TEXTURE: return evalDiscardTexture;
223 case DISCARDMODE_DERIV: return evalDiscardAlways;
224 default:
225 DE_ASSERT(DE_FALSE);
226 return evalDiscardAlways;
227 }
228 }
229
getTemplate(DiscardTemplate variant)230 static const char* getTemplate (DiscardTemplate variant)
231 {
232 #define GLSL_SHADER_TEMPLATE_HEADER \
233 "#version 310 es\n" \
234 "#extension GL_EXT_demote_to_helper_invocation : enable\n" \
235 "layout(location = 0) in mediump vec4 v_color;\n" \
236 "layout(location = 1) in mediump vec4 v_coords;\n" \
237 "layout(location = 2) in mediump vec4 a_one;\n" \
238 "layout(location = 0) out mediump vec4 o_color;\n" \
239 "layout(set = 0, binding = 2) uniform sampler2D ut_brick;\n" \
240 "layout(set = 0, binding = 0) uniform block0 { mediump int ui_one; };\n\n"
241
242 switch (variant)
243 {
244 case DISCARDTEMPLATE_MAIN_BASIC:
245 return GLSL_SHADER_TEMPLATE_HEADER
246 "void main (void)\n"
247 "{\n"
248 " o_color = v_color;\n"
249 " ${DISCARD};\n"
250 "}\n";
251
252 case DISCARDTEMPLATE_FUNCTION_BASIC:
253 return GLSL_SHADER_TEMPLATE_HEADER
254 "void myfunc (void)\n"
255 "{\n"
256 " ${DISCARD};\n"
257 "}\n\n"
258 "void main (void)\n"
259 "{\n"
260 " o_color = v_color;\n"
261 " myfunc();\n"
262 "}\n";
263
264 case DISCARDTEMPLATE_MAIN_STATIC_LOOP:
265 return GLSL_SHADER_TEMPLATE_HEADER
266 "void main (void)\n"
267 "{\n"
268 " o_color = v_color;\n"
269 " for (int i = 0; i < 2; i++)\n"
270 " {\n"
271 " if (i > 0) {\n"
272 " ${DISCARD};\n"
273 " }\n"
274 " }\n"
275 "}\n";
276
277 case DISCARDTEMPLATE_MAIN_DYNAMIC_LOOP:
278 return GLSL_SHADER_TEMPLATE_HEADER
279 "layout(set = 0, binding = 1) uniform block1 { mediump int ui_two; };\n\n"
280 "void main (void)\n"
281 "{\n"
282 " o_color = v_color;\n"
283 " for (int i = 0; i < ui_two; i++)\n"
284 " {\n"
285 " if (i > 0) {\n"
286 " ${DISCARD};\n"
287 " }\n"
288 " }\n"
289 "}\n";
290
291 case DISCARDTEMPLATE_FUNCTION_STATIC_LOOP:
292 return GLSL_SHADER_TEMPLATE_HEADER
293 "void myfunc (void)\n"
294 "{\n"
295 " for (int i = 0; i < 2; i++)\n"
296 " {\n"
297 " if (i > 0) {\n"
298 " ${DISCARD};\n"
299 " }\n"
300 " }\n"
301 "}\n\n"
302 "void main (void)\n"
303 "{\n"
304 " o_color = v_color;\n"
305 " myfunc();\n"
306 "}\n";
307
308 default:
309 DE_ASSERT(DE_FALSE);
310 return DE_NULL;
311 }
312
313 #undef GLSL_SHADER_TEMPLATE_HEADER
314 }
315
getTemplateName(DiscardTemplate variant)316 static const char* getTemplateName (DiscardTemplate variant)
317 {
318 switch (variant)
319 {
320 case DISCARDTEMPLATE_MAIN_BASIC: return "basic";
321 case DISCARDTEMPLATE_FUNCTION_BASIC: return "function";
322 case DISCARDTEMPLATE_MAIN_STATIC_LOOP: return "static_loop";
323 case DISCARDTEMPLATE_MAIN_DYNAMIC_LOOP: return "dynamic_loop";
324 case DISCARDTEMPLATE_FUNCTION_STATIC_LOOP: return "function_static_loop";
325 default:
326 DE_ASSERT(DE_FALSE);
327 return DE_NULL;
328 }
329 }
330
getModeName(DiscardMode mode)331 static const char* getModeName (DiscardMode mode)
332 {
333 switch (mode)
334 {
335 case DISCARDMODE_ALWAYS: return "always";
336 case DISCARDMODE_NEVER: return "never";
337 case DISCARDMODE_UNIFORM: return "uniform";
338 case DISCARDMODE_DYNAMIC: return "dynamic";
339 case DISCARDMODE_TEXTURE: return "texture";
340 case DISCARDMODE_DERIV: return "deriv";
341 default:
342 DE_ASSERT(DE_FALSE);
343 return DE_NULL;
344 }
345 }
346
makeDiscardCase(tcu::TestContext & testCtx,DiscardTemplate tmpl,DiscardMode mode,const std::string & discardStr)347 de::MovePtr<ShaderDiscardCase> makeDiscardCase (tcu::TestContext& testCtx, DiscardTemplate tmpl, DiscardMode mode, const std::string& discardStr)
348 {
349 StringTemplate shaderTemplate(getTemplate(tmpl));
350
351 std::map<std::string, std::string> params;
352
353 switch (mode)
354 {
355 case DISCARDMODE_ALWAYS: params["DISCARD"] = discardStr; break;
356 case DISCARDMODE_NEVER: params["DISCARD"] = "if (false) " + discardStr; break;
357 case DISCARDMODE_UNIFORM: params["DISCARD"] = "if (ui_one > 0) " + discardStr; break;
358 case DISCARDMODE_DYNAMIC: params["DISCARD"] = "if (v_coords.x+v_coords.y > 0.0) " + discardStr; break;
359 case DISCARDMODE_TEXTURE: params["DISCARD"] = "if (texture(ut_brick, v_coords.xy*0.25+0.5).x < 0.7) " + discardStr; break;
360 case DISCARDMODE_DERIV: params["DISCARD"] =
361 // First demote pixels where fragCoord.xy LSBs are not both zero, leaving only one
362 // non-helper pixel per quad. Then compute derivatives of "one+fragCoord" and check they
363 // are 0 or 1 as appropriate. Also check that helperInvocationEXT varies in the quad and
364 // is false on non-helper pixels. Demote the pixel if it gets the right values, so the final
365 // image should be entirely the clear color. If we don't get the right values, output red.
366 // This test case would not work for discard, because derivatives become undefined.
367 " ivec2 f = ivec2(gl_FragCoord.xy);\n"
368 " int lsb = (f.x | f.y)&1;\n"
369 " if (lsb != 0) demote;\n"
370 " bool isHelper = helperInvocationEXT();\n"
371 " highp vec2 dx = dFdx(a_one.xy + gl_FragCoord.xy);\n"
372 " highp vec2 dy = dFdy(a_one.xy + gl_FragCoord.xy);\n"
373 " highp float dh = dFdx(float(isHelper));\n"
374 " bool valid = abs(dx.x-1.0) < 0.01 && dx.y == 0.0 && dy.x == 0.0 && abs(dy.y-1.0) < 0.01 && abs(dh-1.0) < 0.1 && !isHelper;\n"
375 " if (valid) demote;\n"
376 " o_color = vec4(1,0,0,1);\n";
377 break;
378 default:
379 DE_ASSERT(DE_FALSE);
380 break;
381 }
382
383 std::string name = std::string(getTemplateName(tmpl)) + "_" + getModeName(mode);
384
385 return de::MovePtr<ShaderDiscardCase>(new ShaderDiscardCase(testCtx, name.c_str(),
386 shaderTemplate.specialize(params).c_str(),
387 getEvalFunc(mode),
388 mode == DISCARDMODE_TEXTURE, // usesTexture
389 mode != DISCARDMODE_DERIV, // fuzzyCompare
390 discardStr == "demote")); // demote
391 }
392
393 class ShaderDiscardTests : public tcu::TestCaseGroup
394 {
395 public:
396 ShaderDiscardTests (tcu::TestContext& textCtx, const char *groupName);
397 virtual ~ShaderDiscardTests (void);
398
399 virtual void init (void);
400
401 private:
402 ShaderDiscardTests (const ShaderDiscardTests&); // not allowed!
403 ShaderDiscardTests& operator= (const ShaderDiscardTests&); // not allowed!
404 const std::string m_groupName;
405 };
406
ShaderDiscardTests(tcu::TestContext & testCtx,const char * groupName)407 ShaderDiscardTests::ShaderDiscardTests (tcu::TestContext& testCtx, const char *groupName)
408 : TestCaseGroup(testCtx, groupName)
409 , m_groupName(groupName)
410 {
411 }
412
~ShaderDiscardTests(void)413 ShaderDiscardTests::~ShaderDiscardTests (void)
414 {
415 }
416
init(void)417 void ShaderDiscardTests::init (void)
418 {
419 for (int tmpl = 0; tmpl < DISCARDTEMPLATE_LAST; tmpl++)
420 {
421 for (int mode = 0; mode < DISCARDMODE_LAST; mode++)
422 {
423 if (mode == DISCARDMODE_DERIV && m_groupName == "discard")
424 continue;
425 addChild(makeDiscardCase(m_testCtx, (DiscardTemplate)tmpl, (DiscardMode)mode, m_groupName).release());
426 }
427 }
428 }
429
430 } // anonymous
431
createDiscardTests(tcu::TestContext & testCtx)432 tcu::TestCaseGroup* createDiscardTests (tcu::TestContext& testCtx)
433 {
434 return new ShaderDiscardTests(testCtx, "discard");
435 }
436
createDemoteTests(tcu::TestContext & testCtx)437 tcu::TestCaseGroup* createDemoteTests (tcu::TestContext& testCtx)
438 {
439 return new ShaderDiscardTests(testCtx, "demote");
440 }
441
442 } // sr
443 } // vkt
444
