1 /*-------------------------------------------------------------------------
2 * drawElements Quality Program Reference Renderer
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 Reference implementation for per-fragment operations.
22 *//*--------------------------------------------------------------------*/
23
24 #include "rrFragmentOperations.hpp"
25 #include "tcuVectorUtil.hpp"
26 #include "tcuTextureUtil.hpp"
27 #include <limits>
28
29 using tcu::IVec2;
30 using tcu::Vec3;
31 using tcu::Vec4;
32 using tcu::IVec4;
33 using tcu::UVec4;
34 using tcu::min;
35 using tcu::max;
36 using tcu::clamp;
37 using de::min;
38 using de::max;
39 using de::clamp;
40
41 namespace rr
42 {
43
44 // Return oldValue with the bits indicated by mask replaced by corresponding bits of newValue.
maskedBitReplace(int oldValue,int newValue,deUint32 mask)45 static inline int maskedBitReplace (int oldValue, int newValue, deUint32 mask)
46 {
47 return (oldValue & ~mask) | (newValue & mask);
48 }
49
isInsideRect(const IVec2 & point,const WindowRectangle & rect)50 static inline bool isInsideRect (const IVec2& point, const WindowRectangle& rect)
51 {
52 return de::inBounds(point.x(), rect.left, rect.left + rect.width) &&
53 de::inBounds(point.y(), rect.bottom, rect.bottom + rect.height);
54 }
55
unpremultiply(const Vec4 & v)56 static inline Vec4 unpremultiply (const Vec4& v)
57 {
58 if (v.w() > 0.0f)
59 return Vec4(v.x()/v.w(), v.y()/v.w(), v.z()/v.w(), v.w());
60 else
61 {
62 DE_ASSERT(v.x() == 0.0f && v.y() == 0.0f && v.z() == 0.0f);
63 return Vec4(0.0f, 0.0f, 0.0f, 0.0f);
64 }
65 }
66
clearMultisampleColorBuffer(const tcu::PixelBufferAccess & dst,const Vec4 & v,const WindowRectangle & r)67 void clearMultisampleColorBuffer (const tcu::PixelBufferAccess& dst, const Vec4& v, const WindowRectangle& r) { tcu::clear(tcu::getSubregion(dst, 0, r.left, r.bottom, dst.getWidth(), r.width, r.height), v); }
clearMultisampleColorBuffer(const tcu::PixelBufferAccess & dst,const IVec4 & v,const WindowRectangle & r)68 void clearMultisampleColorBuffer (const tcu::PixelBufferAccess& dst, const IVec4& v, const WindowRectangle& r) { tcu::clear(tcu::getSubregion(dst, 0, r.left, r.bottom, dst.getWidth(), r.width, r.height), v); }
clearMultisampleColorBuffer(const tcu::PixelBufferAccess & dst,const UVec4 & v,const WindowRectangle & r)69 void clearMultisampleColorBuffer (const tcu::PixelBufferAccess& dst, const UVec4& v, const WindowRectangle& r) { tcu::clear(tcu::getSubregion(dst, 0, r.left, r.bottom, dst.getWidth(), r.width, r.height), v.cast<int>()); }
clearMultisampleDepthBuffer(const tcu::PixelBufferAccess & dst,float v,const WindowRectangle & r)70 void clearMultisampleDepthBuffer (const tcu::PixelBufferAccess& dst, float v, const WindowRectangle& r) { tcu::clearDepth(tcu::getSubregion(dst, 0, r.left, r.bottom, dst.getWidth(), r.width, r.height), v); }
clearMultisampleStencilBuffer(const tcu::PixelBufferAccess & dst,int v,const WindowRectangle & r)71 void clearMultisampleStencilBuffer (const tcu::PixelBufferAccess& dst, int v, const WindowRectangle& r) { tcu::clearStencil(tcu::getSubregion(dst, 0, r.left, r.bottom, dst.getWidth(), r.width, r.height), v); }
72
FragmentProcessor(void)73 FragmentProcessor::FragmentProcessor (void)
74 : m_sampleRegister()
75 {
76 }
77
executeScissorTest(int fragNdxOffset,int numSamplesPerFragment,const Fragment * inputFragments,const WindowRectangle & scissorRect)78 void FragmentProcessor::executeScissorTest (int fragNdxOffset, int numSamplesPerFragment, const Fragment* inputFragments, const WindowRectangle& scissorRect)
79 {
80 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++)
81 {
82 if (m_sampleRegister[regSampleNdx].isAlive)
83 {
84 int fragNdx = fragNdxOffset + regSampleNdx/numSamplesPerFragment;
85
86 if (!isInsideRect(inputFragments[fragNdx].pixelCoord, scissorRect))
87 m_sampleRegister[regSampleNdx].isAlive = false;
88 }
89 }
90 }
91
executeStencilCompare(int fragNdxOffset,int numSamplesPerFragment,const Fragment * inputFragments,const StencilState & stencilState,int numStencilBits,const tcu::ConstPixelBufferAccess & stencilBuffer)92 void FragmentProcessor::executeStencilCompare (int fragNdxOffset, int numSamplesPerFragment, const Fragment* inputFragments, const StencilState& stencilState, int numStencilBits, const tcu::ConstPixelBufferAccess& stencilBuffer)
93 {
94 #define SAMPLE_REGISTER_STENCIL_COMPARE(COMPARE_EXPRESSION) \
95 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++) \
96 { \
97 if (m_sampleRegister[regSampleNdx].isAlive) \
98 { \
99 int fragSampleNdx = regSampleNdx % numSamplesPerFragment; \
100 const Fragment& frag = inputFragments[fragNdxOffset + regSampleNdx/numSamplesPerFragment]; \
101 int stencilBufferValue = stencilBuffer.getPixStencil(fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y()); \
102 int maskedRef = stencilState.compMask & clampedStencilRef; \
103 int maskedBuf = stencilState.compMask & stencilBufferValue; \
104 DE_UNREF(maskedRef); \
105 DE_UNREF(maskedBuf); \
106 \
107 m_sampleRegister[regSampleNdx].stencilPassed = (COMPARE_EXPRESSION); \
108 } \
109 }
110
111 int clampedStencilRef = de::clamp(stencilState.ref, 0, (1<<numStencilBits)-1);
112
113 switch (stencilState.func)
114 {
115 case TESTFUNC_NEVER: SAMPLE_REGISTER_STENCIL_COMPARE(false) break;
116 case TESTFUNC_ALWAYS: SAMPLE_REGISTER_STENCIL_COMPARE(true) break;
117 case TESTFUNC_LESS: SAMPLE_REGISTER_STENCIL_COMPARE(maskedRef < maskedBuf) break;
118 case TESTFUNC_LEQUAL: SAMPLE_REGISTER_STENCIL_COMPARE(maskedRef <= maskedBuf) break;
119 case TESTFUNC_GREATER: SAMPLE_REGISTER_STENCIL_COMPARE(maskedRef > maskedBuf) break;
120 case TESTFUNC_GEQUAL: SAMPLE_REGISTER_STENCIL_COMPARE(maskedRef >= maskedBuf) break;
121 case TESTFUNC_EQUAL: SAMPLE_REGISTER_STENCIL_COMPARE(maskedRef == maskedBuf) break;
122 case TESTFUNC_NOTEQUAL: SAMPLE_REGISTER_STENCIL_COMPARE(maskedRef != maskedBuf) break;
123 default:
124 DE_ASSERT(false);
125 }
126
127 #undef SAMPLE_REGISTER_STENCIL_COMPARE
128 }
129
executeStencilSFail(int fragNdxOffset,int numSamplesPerFragment,const Fragment * inputFragments,const StencilState & stencilState,int numStencilBits,const tcu::PixelBufferAccess & stencilBuffer)130 void FragmentProcessor::executeStencilSFail (int fragNdxOffset, int numSamplesPerFragment, const Fragment* inputFragments, const StencilState& stencilState, int numStencilBits, const tcu::PixelBufferAccess& stencilBuffer)
131 {
132 #define SAMPLE_REGISTER_SFAIL(SFAIL_EXPRESSION) \
133 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++) \
134 { \
135 if (m_sampleRegister[regSampleNdx].isAlive && !m_sampleRegister[regSampleNdx].stencilPassed) \
136 { \
137 int fragSampleNdx = regSampleNdx % numSamplesPerFragment; \
138 const Fragment& frag = inputFragments[fragNdxOffset + regSampleNdx/numSamplesPerFragment]; \
139 int stencilBufferValue = stencilBuffer.getPixStencil(fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y()); \
140 \
141 stencilBuffer.setPixStencil(maskedBitReplace(stencilBufferValue, (SFAIL_EXPRESSION), stencilState.writeMask), fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y()); \
142 m_sampleRegister[regSampleNdx].isAlive = false; \
143 } \
144 }
145
146 int clampedStencilRef = de::clamp(stencilState.ref, 0, (1<<numStencilBits)-1);
147
148 switch (stencilState.sFail)
149 {
150 case STENCILOP_KEEP: SAMPLE_REGISTER_SFAIL(stencilBufferValue) break;
151 case STENCILOP_ZERO: SAMPLE_REGISTER_SFAIL(0) break;
152 case STENCILOP_REPLACE: SAMPLE_REGISTER_SFAIL(clampedStencilRef) break;
153 case STENCILOP_INCR: SAMPLE_REGISTER_SFAIL(de::clamp(stencilBufferValue+1, 0, (1<<numStencilBits) - 1)) break;
154 case STENCILOP_DECR: SAMPLE_REGISTER_SFAIL(de::clamp(stencilBufferValue-1, 0, (1<<numStencilBits) - 1)) break;
155 case STENCILOP_INCR_WRAP: SAMPLE_REGISTER_SFAIL((stencilBufferValue + 1) & ((1<<numStencilBits) - 1)) break;
156 case STENCILOP_DECR_WRAP: SAMPLE_REGISTER_SFAIL((stencilBufferValue - 1) & ((1<<numStencilBits) - 1)) break;
157 case STENCILOP_INVERT: SAMPLE_REGISTER_SFAIL((~stencilBufferValue) & ((1<<numStencilBits) - 1)) break;
158 default:
159 DE_ASSERT(false);
160 }
161
162 #undef SAMPLE_REGISTER_SFAIL
163 }
164
165
executeDepthBoundsTest(int fragNdxOffset,int numSamplesPerFragment,const Fragment * inputFragments,const float minDepthBound,const float maxDepthBound,const tcu::ConstPixelBufferAccess & depthBuffer)166 void FragmentProcessor::executeDepthBoundsTest (int fragNdxOffset, int numSamplesPerFragment, const Fragment* inputFragments, const float minDepthBound, const float maxDepthBound, const tcu::ConstPixelBufferAccess& depthBuffer)
167 {
168 if (depthBuffer.getFormat().type == tcu::TextureFormat::FLOAT || depthBuffer.getFormat().type == tcu::TextureFormat::FLOAT_UNSIGNED_INT_24_8_REV)
169 {
170 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; ++regSampleNdx)
171 {
172 if (m_sampleRegister[regSampleNdx].isAlive)
173 {
174 const int fragSampleNdx = regSampleNdx % numSamplesPerFragment;
175 const Fragment& frag = inputFragments[fragNdxOffset + regSampleNdx/numSamplesPerFragment];
176 const float depthBufferValue = depthBuffer.getPixDepth(fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y());
177
178 if (!de::inRange(depthBufferValue, minDepthBound, maxDepthBound))
179 m_sampleRegister[regSampleNdx].isAlive = false;
180 }
181 }
182 }
183 else
184 {
185 /* Convert float bounds to target buffer format for comparison */
186
187 deUint32 minDepthBoundUint, maxDepthBoundUint;
188 {
189 deUint32 buffer[2];
190 DE_ASSERT(sizeof(buffer) >= (size_t)depthBuffer.getFormat().getPixelSize());
191
192 tcu::PixelBufferAccess access(depthBuffer.getFormat(), 1, 1, 1, &buffer);
193 access.setPixDepth(minDepthBound, 0, 0, 0);
194 minDepthBoundUint = access.getPixelUint(0, 0, 0).x();
195 }
196 {
197 deUint32 buffer[2];
198
199 tcu::PixelBufferAccess access(depthBuffer.getFormat(), 1, 1, 1, &buffer);
200 access.setPixDepth(maxDepthBound, 0, 0, 0);
201 maxDepthBoundUint = access.getPixelUint(0, 0, 0).x();
202 }
203
204 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; ++regSampleNdx)
205 {
206 if (m_sampleRegister[regSampleNdx].isAlive)
207 {
208 const int fragSampleNdx = regSampleNdx % numSamplesPerFragment;
209 const Fragment& frag = inputFragments[fragNdxOffset + regSampleNdx / numSamplesPerFragment];
210 const deUint32 depthBufferValue = depthBuffer.getPixelUint(fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y()).x();
211
212 if (!de::inRange(depthBufferValue, minDepthBoundUint, maxDepthBoundUint))
213 m_sampleRegister[regSampleNdx].isAlive = false;
214 }
215 }
216 }
217 }
218
executeDepthCompare(int fragNdxOffset,int numSamplesPerFragment,const Fragment * inputFragments,TestFunc depthFunc,const tcu::ConstPixelBufferAccess & depthBuffer)219 void FragmentProcessor::executeDepthCompare (int fragNdxOffset, int numSamplesPerFragment, const Fragment* inputFragments, TestFunc depthFunc, const tcu::ConstPixelBufferAccess& depthBuffer)
220 {
221 #define SAMPLE_REGISTER_DEPTH_COMPARE_F(COMPARE_EXPRESSION) \
222 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++) \
223 { \
224 if (m_sampleRegister[regSampleNdx].isAlive) \
225 { \
226 int fragSampleNdx = regSampleNdx % numSamplesPerFragment; \
227 const Fragment& frag = inputFragments[fragNdxOffset + regSampleNdx/numSamplesPerFragment]; \
228 float depthBufferValue = depthBuffer.getPixDepth(fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y()); \
229 float sampleDepthFloat = frag.sampleDepths[fragSampleNdx]; \
230 float sampleDepth = de::clamp(sampleDepthFloat, 0.0f, 1.0f); \
231 \
232 m_sampleRegister[regSampleNdx].depthPassed = (COMPARE_EXPRESSION); \
233 \
234 DE_UNREF(depthBufferValue); \
235 DE_UNREF(sampleDepth); \
236 } \
237 }
238
239 #define SAMPLE_REGISTER_DEPTH_COMPARE_UI(COMPARE_EXPRESSION) \
240 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++) \
241 { \
242 if (m_sampleRegister[regSampleNdx].isAlive) \
243 { \
244 int fragSampleNdx = regSampleNdx % numSamplesPerFragment; \
245 const Fragment& frag = inputFragments[fragNdxOffset + regSampleNdx/numSamplesPerFragment]; \
246 deUint32 depthBufferValue = depthBuffer.getPixelUint(fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y()).x(); \
247 float sampleDepthFloat = frag.sampleDepths[fragSampleNdx]; \
248 \
249 /* Convert input float to target buffer format for comparison */ \
250 \
251 deUint32 buffer[2]; \
252 \
253 DE_ASSERT(sizeof(buffer) >= (size_t)depthBuffer.getFormat().getPixelSize()); \
254 \
255 tcu::PixelBufferAccess access(depthBuffer.getFormat(), 1, 1, 1, &buffer); \
256 access.setPixDepth(sampleDepthFloat, 0, 0, 0); \
257 deUint32 sampleDepth = access.getPixelUint(0, 0, 0).x(); \
258 \
259 m_sampleRegister[regSampleNdx].depthPassed = (COMPARE_EXPRESSION); \
260 \
261 DE_UNREF(depthBufferValue); \
262 DE_UNREF(sampleDepth); \
263 } \
264 }
265
266 if (depthBuffer.getFormat().type == tcu::TextureFormat::FLOAT || depthBuffer.getFormat().type == tcu::TextureFormat::FLOAT_UNSIGNED_INT_24_8_REV)
267 {
268
269 switch (depthFunc)
270 {
271 case TESTFUNC_NEVER: SAMPLE_REGISTER_DEPTH_COMPARE_F(false) break;
272 case TESTFUNC_ALWAYS: SAMPLE_REGISTER_DEPTH_COMPARE_F(true) break;
273 case TESTFUNC_LESS: SAMPLE_REGISTER_DEPTH_COMPARE_F(sampleDepth < depthBufferValue) break;
274 case TESTFUNC_LEQUAL: SAMPLE_REGISTER_DEPTH_COMPARE_F(sampleDepth <= depthBufferValue) break;
275 case TESTFUNC_GREATER: SAMPLE_REGISTER_DEPTH_COMPARE_F(sampleDepth > depthBufferValue) break;
276 case TESTFUNC_GEQUAL: SAMPLE_REGISTER_DEPTH_COMPARE_F(sampleDepth >= depthBufferValue) break;
277 case TESTFUNC_EQUAL: SAMPLE_REGISTER_DEPTH_COMPARE_F(sampleDepth == depthBufferValue) break;
278 case TESTFUNC_NOTEQUAL: SAMPLE_REGISTER_DEPTH_COMPARE_F(sampleDepth != depthBufferValue) break;
279 default:
280 DE_ASSERT(false);
281 }
282
283 }
284 else
285 {
286 switch (depthFunc)
287 {
288 case TESTFUNC_NEVER: SAMPLE_REGISTER_DEPTH_COMPARE_UI(false) break;
289 case TESTFUNC_ALWAYS: SAMPLE_REGISTER_DEPTH_COMPARE_UI(true) break;
290 case TESTFUNC_LESS: SAMPLE_REGISTER_DEPTH_COMPARE_UI(sampleDepth < depthBufferValue) break;
291 case TESTFUNC_LEQUAL: SAMPLE_REGISTER_DEPTH_COMPARE_UI(sampleDepth <= depthBufferValue) break;
292 case TESTFUNC_GREATER: SAMPLE_REGISTER_DEPTH_COMPARE_UI(sampleDepth > depthBufferValue) break;
293 case TESTFUNC_GEQUAL: SAMPLE_REGISTER_DEPTH_COMPARE_UI(sampleDepth >= depthBufferValue) break;
294 case TESTFUNC_EQUAL: SAMPLE_REGISTER_DEPTH_COMPARE_UI(sampleDepth == depthBufferValue) break;
295 case TESTFUNC_NOTEQUAL: SAMPLE_REGISTER_DEPTH_COMPARE_UI(sampleDepth != depthBufferValue) break;
296 default:
297 DE_ASSERT(false);
298 }
299 }
300
301 #undef SAMPLE_REGISTER_DEPTH_COMPARE_F
302 #undef SAMPLE_REGISTER_DEPTH_COMPARE_UI
303 }
304
executeDepthWrite(int fragNdxOffset,int numSamplesPerFragment,const Fragment * inputFragments,const tcu::PixelBufferAccess & depthBuffer)305 void FragmentProcessor::executeDepthWrite (int fragNdxOffset, int numSamplesPerFragment, const Fragment* inputFragments, const tcu::PixelBufferAccess& depthBuffer)
306 {
307 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++)
308 {
309 if (m_sampleRegister[regSampleNdx].isAlive && m_sampleRegister[regSampleNdx].depthPassed)
310 {
311 int fragSampleNdx = regSampleNdx % numSamplesPerFragment;
312 const Fragment& frag = inputFragments[fragNdxOffset + regSampleNdx/numSamplesPerFragment];
313 const float clampedDepth = de::clamp(frag.sampleDepths[fragSampleNdx], 0.0f, 1.0f);
314
315 depthBuffer.setPixDepth(clampedDepth, fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y());
316 }
317 }
318 }
319
executeStencilDpFailAndPass(int fragNdxOffset,int numSamplesPerFragment,const Fragment * inputFragments,const StencilState & stencilState,int numStencilBits,const tcu::PixelBufferAccess & stencilBuffer)320 void FragmentProcessor::executeStencilDpFailAndPass (int fragNdxOffset, int numSamplesPerFragment, const Fragment* inputFragments, const StencilState& stencilState, int numStencilBits, const tcu::PixelBufferAccess& stencilBuffer)
321 {
322 #define SAMPLE_REGISTER_DPFAIL_OR_DPPASS(CONDITION, EXPRESSION) \
323 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++) \
324 { \
325 if (m_sampleRegister[regSampleNdx].isAlive && (CONDITION)) \
326 { \
327 int fragSampleNdx = regSampleNdx % numSamplesPerFragment; \
328 const Fragment& frag = inputFragments[fragNdxOffset + regSampleNdx/numSamplesPerFragment]; \
329 int stencilBufferValue = stencilBuffer.getPixStencil(fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y()); \
330 \
331 stencilBuffer.setPixStencil(maskedBitReplace(stencilBufferValue, (EXPRESSION), stencilState.writeMask), fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y()); \
332 } \
333 }
334
335 #define SWITCH_DPFAIL_OR_DPPASS(OP_NAME, CONDITION) \
336 switch (stencilState.OP_NAME) \
337 { \
338 case STENCILOP_KEEP: SAMPLE_REGISTER_DPFAIL_OR_DPPASS(CONDITION, stencilBufferValue) break; \
339 case STENCILOP_ZERO: SAMPLE_REGISTER_DPFAIL_OR_DPPASS(CONDITION, 0) break; \
340 case STENCILOP_REPLACE: SAMPLE_REGISTER_DPFAIL_OR_DPPASS(CONDITION, clampedStencilRef) break; \
341 case STENCILOP_INCR: SAMPLE_REGISTER_DPFAIL_OR_DPPASS(CONDITION, de::clamp(stencilBufferValue+1, 0, (1<<numStencilBits) - 1)) break; \
342 case STENCILOP_DECR: SAMPLE_REGISTER_DPFAIL_OR_DPPASS(CONDITION, de::clamp(stencilBufferValue-1, 0, (1<<numStencilBits) - 1)) break; \
343 case STENCILOP_INCR_WRAP: SAMPLE_REGISTER_DPFAIL_OR_DPPASS(CONDITION, (stencilBufferValue + 1) & ((1<<numStencilBits) - 1)) break; \
344 case STENCILOP_DECR_WRAP: SAMPLE_REGISTER_DPFAIL_OR_DPPASS(CONDITION, (stencilBufferValue - 1) & ((1<<numStencilBits) - 1)) break; \
345 case STENCILOP_INVERT: SAMPLE_REGISTER_DPFAIL_OR_DPPASS(CONDITION, (~stencilBufferValue) & ((1<<numStencilBits) - 1)) break; \
346 default: \
347 DE_ASSERT(false); \
348 }
349
350 int clampedStencilRef = de::clamp(stencilState.ref, 0, (1<<numStencilBits)-1);
351
352 SWITCH_DPFAIL_OR_DPPASS(dpFail, !m_sampleRegister[regSampleNdx].depthPassed)
353 SWITCH_DPFAIL_OR_DPPASS(dpPass, m_sampleRegister[regSampleNdx].depthPassed)
354
355 #undef SWITCH_DPFAIL_OR_DPPASS
356 #undef SAMPLE_REGISTER_DPFAIL_OR_DPPASS
357 }
358
executeBlendFactorComputeRGB(const Vec4 & blendColor,const BlendState & blendRGBState)359 void FragmentProcessor::executeBlendFactorComputeRGB (const Vec4& blendColor, const BlendState& blendRGBState)
360 {
361 #define SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, FACTOR_EXPRESSION) \
362 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++) \
363 { \
364 if (m_sampleRegister[regSampleNdx].isAlive) \
365 { \
366 const Vec4& src = m_sampleRegister[regSampleNdx].clampedBlendSrcColor; \
367 const Vec4& src1 = m_sampleRegister[regSampleNdx].clampedBlendSrc1Color; \
368 const Vec4& dst = m_sampleRegister[regSampleNdx].clampedBlendDstColor; \
369 DE_UNREF(src); \
370 DE_UNREF(src1); \
371 DE_UNREF(dst); \
372 \
373 m_sampleRegister[regSampleNdx].FACTOR_NAME = (FACTOR_EXPRESSION); \
374 } \
375 }
376
377 #define SWITCH_SRC_OR_DST_FACTOR_RGB(FUNC_NAME, FACTOR_NAME) \
378 switch (blendRGBState.FUNC_NAME) \
379 { \
380 case BLENDFUNC_ZERO: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, Vec3(0.0f)) break; \
381 case BLENDFUNC_ONE: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, Vec3(1.0f)) break; \
382 case BLENDFUNC_SRC_COLOR: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, src.swizzle(0,1,2)) break; \
383 case BLENDFUNC_ONE_MINUS_SRC_COLOR: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, Vec3(1.0f) - src.swizzle(0,1,2)) break; \
384 case BLENDFUNC_DST_COLOR: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, dst.swizzle(0,1,2)) break; \
385 case BLENDFUNC_ONE_MINUS_DST_COLOR: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, Vec3(1.0f) - dst.swizzle(0,1,2)) break; \
386 case BLENDFUNC_SRC_ALPHA: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, Vec3(src.w())) break; \
387 case BLENDFUNC_ONE_MINUS_SRC_ALPHA: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, Vec3(1.0f - src.w())) break; \
388 case BLENDFUNC_DST_ALPHA: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, Vec3(dst.w())) break; \
389 case BLENDFUNC_ONE_MINUS_DST_ALPHA: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, Vec3(1.0f - dst.w())) break; \
390 case BLENDFUNC_CONSTANT_COLOR: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, blendColor.swizzle(0,1,2)) break; \
391 case BLENDFUNC_ONE_MINUS_CONSTANT_COLOR: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, Vec3(1.0f) - blendColor.swizzle(0,1,2)) break; \
392 case BLENDFUNC_CONSTANT_ALPHA: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, Vec3(blendColor.w())) break; \
393 case BLENDFUNC_ONE_MINUS_CONSTANT_ALPHA: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, Vec3(1.0f - blendColor.w())) break; \
394 case BLENDFUNC_SRC_ALPHA_SATURATE: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, Vec3(de::min(src.w(), 1.0f - dst.w()))) break; \
395 case BLENDFUNC_SRC1_COLOR: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, src1.swizzle(0,1,2)) break; \
396 case BLENDFUNC_ONE_MINUS_SRC1_COLOR: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, Vec3(1.0f) - src1.swizzle(0,1,2)) break; \
397 case BLENDFUNC_SRC1_ALPHA: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, Vec3(src1.w())) break; \
398 case BLENDFUNC_ONE_MINUS_SRC1_ALPHA: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, Vec3(1.0f - src1.w())) break; \
399 default: \
400 DE_ASSERT(false); \
401 }
402
403 SWITCH_SRC_OR_DST_FACTOR_RGB(srcFunc, blendSrcFactorRGB)
404 SWITCH_SRC_OR_DST_FACTOR_RGB(dstFunc, blendDstFactorRGB)
405
406 #undef SWITCH_SRC_OR_DST_FACTOR_RGB
407 #undef SAMPLE_REGISTER_BLEND_FACTOR
408 }
409
executeBlendFactorComputeA(const Vec4 & blendColor,const BlendState & blendAState)410 void FragmentProcessor::executeBlendFactorComputeA (const Vec4& blendColor, const BlendState& blendAState)
411 {
412 #define SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, FACTOR_EXPRESSION) \
413 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++) \
414 { \
415 if (m_sampleRegister[regSampleNdx].isAlive) \
416 { \
417 const Vec4& src = m_sampleRegister[regSampleNdx].clampedBlendSrcColor; \
418 const Vec4& src1 = m_sampleRegister[regSampleNdx].clampedBlendSrc1Color; \
419 const Vec4& dst = m_sampleRegister[regSampleNdx].clampedBlendDstColor; \
420 DE_UNREF(src); \
421 DE_UNREF(src1); \
422 DE_UNREF(dst); \
423 \
424 m_sampleRegister[regSampleNdx].FACTOR_NAME = (FACTOR_EXPRESSION); \
425 } \
426 }
427
428 #define SWITCH_SRC_OR_DST_FACTOR_A(FUNC_NAME, FACTOR_NAME) \
429 switch (blendAState.FUNC_NAME) \
430 { \
431 case BLENDFUNC_ZERO: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, 0.0f) break; \
432 case BLENDFUNC_ONE: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, 1.0f) break; \
433 case BLENDFUNC_SRC_COLOR: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, src.w()) break; \
434 case BLENDFUNC_ONE_MINUS_SRC_COLOR: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, 1.0f - src.w()) break; \
435 case BLENDFUNC_DST_COLOR: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, dst.w()) break; \
436 case BLENDFUNC_ONE_MINUS_DST_COLOR: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, 1.0f - dst.w()) break; \
437 case BLENDFUNC_SRC_ALPHA: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, src.w()) break; \
438 case BLENDFUNC_ONE_MINUS_SRC_ALPHA: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, 1.0f - src.w()) break; \
439 case BLENDFUNC_DST_ALPHA: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, dst.w()) break; \
440 case BLENDFUNC_ONE_MINUS_DST_ALPHA: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, 1.0f - dst.w()) break; \
441 case BLENDFUNC_CONSTANT_COLOR: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, blendColor.w()) break; \
442 case BLENDFUNC_ONE_MINUS_CONSTANT_COLOR: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, 1.0f - blendColor.w()) break; \
443 case BLENDFUNC_CONSTANT_ALPHA: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, blendColor.w()) break; \
444 case BLENDFUNC_ONE_MINUS_CONSTANT_ALPHA: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, 1.0f - blendColor.w()) break; \
445 case BLENDFUNC_SRC_ALPHA_SATURATE: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, 1.0f) break; \
446 case BLENDFUNC_SRC1_COLOR: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, src1.w()) break; \
447 case BLENDFUNC_ONE_MINUS_SRC1_COLOR: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, 1.0f - src1.w()) break; \
448 case BLENDFUNC_SRC1_ALPHA: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, src1.w()) break; \
449 case BLENDFUNC_ONE_MINUS_SRC1_ALPHA: SAMPLE_REGISTER_BLEND_FACTOR(FACTOR_NAME, 1.0f - src1.w()) break; \
450 default: \
451 DE_ASSERT(false); \
452 }
453
454 SWITCH_SRC_OR_DST_FACTOR_A(srcFunc, blendSrcFactorA)
455 SWITCH_SRC_OR_DST_FACTOR_A(dstFunc, blendDstFactorA)
456
457 #undef SWITCH_SRC_OR_DST_FACTOR_A
458 #undef SAMPLE_REGISTER_BLEND_FACTOR
459 }
460
executeBlend(const BlendState & blendRGBState,const BlendState & blendAState)461 void FragmentProcessor::executeBlend (const BlendState& blendRGBState, const BlendState& blendAState)
462 {
463 #define SAMPLE_REGISTER_BLENDED_COLOR(COLOR_NAME, COLOR_EXPRESSION) \
464 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++) \
465 { \
466 if (m_sampleRegister[regSampleNdx].isAlive) \
467 { \
468 SampleData& sample = m_sampleRegister[regSampleNdx]; \
469 const Vec4& srcColor = sample.clampedBlendSrcColor; \
470 const Vec4& dstColor = sample.clampedBlendDstColor; \
471 \
472 sample.COLOR_NAME = (COLOR_EXPRESSION); \
473 } \
474 }
475
476 switch (blendRGBState.equation)
477 {
478 case BLENDEQUATION_ADD: SAMPLE_REGISTER_BLENDED_COLOR(blendedRGB, srcColor.swizzle(0,1,2)*sample.blendSrcFactorRGB + dstColor.swizzle(0,1,2)*sample.blendDstFactorRGB) break;
479 case BLENDEQUATION_SUBTRACT: SAMPLE_REGISTER_BLENDED_COLOR(blendedRGB, srcColor.swizzle(0,1,2)*sample.blendSrcFactorRGB - dstColor.swizzle(0,1,2)*sample.blendDstFactorRGB) break;
480 case BLENDEQUATION_REVERSE_SUBTRACT: SAMPLE_REGISTER_BLENDED_COLOR(blendedRGB, dstColor.swizzle(0,1,2)*sample.blendDstFactorRGB - srcColor.swizzle(0,1,2)*sample.blendSrcFactorRGB) break;
481 case BLENDEQUATION_MIN: SAMPLE_REGISTER_BLENDED_COLOR(blendedRGB, min(srcColor.swizzle(0,1,2), dstColor.swizzle(0,1,2))) break;
482 case BLENDEQUATION_MAX: SAMPLE_REGISTER_BLENDED_COLOR(blendedRGB, max(srcColor.swizzle(0,1,2), dstColor.swizzle(0,1,2))) break;
483 default:
484 DE_ASSERT(false);
485 }
486
487 switch (blendAState.equation)
488 {
489 case BLENDEQUATION_ADD: SAMPLE_REGISTER_BLENDED_COLOR(blendedA, srcColor.w()*sample.blendSrcFactorA + dstColor.w()*sample.blendDstFactorA) break;
490 case BLENDEQUATION_SUBTRACT: SAMPLE_REGISTER_BLENDED_COLOR(blendedA, srcColor.w()*sample.blendSrcFactorA - dstColor.w()*sample.blendDstFactorA) break;
491 case BLENDEQUATION_REVERSE_SUBTRACT: SAMPLE_REGISTER_BLENDED_COLOR(blendedA, dstColor.w()*sample.blendDstFactorA - srcColor.w()*sample.blendSrcFactorA) break;
492 case BLENDEQUATION_MIN: SAMPLE_REGISTER_BLENDED_COLOR(blendedA, min(srcColor.w(), dstColor.w())) break;
493 case BLENDEQUATION_MAX: SAMPLE_REGISTER_BLENDED_COLOR(blendedA, max(srcColor.w(), dstColor.w())) break;
494 default:
495 DE_ASSERT(false);
496 }
497 #undef SAMPLE_REGISTER_BLENDED_COLOR
498 }
499
500 namespace advblend
501 {
502
multiply(float src,float dst)503 inline float multiply (float src, float dst) { return src*dst; }
screen(float src,float dst)504 inline float screen (float src, float dst) { return src + dst - src*dst; }
darken(float src,float dst)505 inline float darken (float src, float dst) { return de::min(src, dst); }
lighten(float src,float dst)506 inline float lighten (float src, float dst) { return de::max(src, dst); }
difference(float src,float dst)507 inline float difference (float src, float dst) { return de::abs(dst-src); }
exclusion(float src,float dst)508 inline float exclusion (float src, float dst) { return src + dst - 2.0f*src*dst; }
509
overlay(float src,float dst)510 inline float overlay (float src, float dst)
511 {
512 if (dst <= 0.5f)
513 return 2.0f*src*dst;
514 else
515 return 1.0f - 2.0f*(1.0f-src)*(1.0f-dst);
516 }
517
colordodge(float src,float dst)518 inline float colordodge (float src, float dst)
519 {
520 if (dst <= 0.0f)
521 return 0.0f;
522 else if (src < 1.0f)
523 return de::min(1.0f, dst/(1.0f-src));
524 else
525 return 1.0f;
526 }
527
colorburn(float src,float dst)528 inline float colorburn (float src, float dst)
529 {
530 if (dst >= 1.0f)
531 return 1.0f;
532 else if (src > 0.0f)
533 return 1.0f - de::min(1.0f, (1.0f-dst)/src);
534 else
535 return 0.0f;
536 }
537
hardlight(float src,float dst)538 inline float hardlight (float src, float dst)
539 {
540 if (src <= 0.5f)
541 return 2.0f*src*dst;
542 else
543 return 1.0f - 2.0f*(1.0f-src)*(1.0f-dst);
544 }
545
softlight(float src,float dst)546 inline float softlight (float src, float dst)
547 {
548 if (src <= 0.5f)
549 return dst - (1.0f - 2.0f*src)*dst*(1.0f-dst);
550 else if (dst <= 0.25f)
551 return dst + (2.0f*src - 1.0f)*dst*((16.0f*dst - 12.0f)*dst + 3.0f);
552 else
553 return dst + (2.0f*src - 1.0f)*(deFloatSqrt(dst)-dst);
554 }
555
minComp(const Vec3 & v)556 inline float minComp (const Vec3& v)
557 {
558 return de::min(de::min(v.x(), v.y()), v.z());
559 }
560
maxComp(const Vec3 & v)561 inline float maxComp (const Vec3& v)
562 {
563 return de::max(de::max(v.x(), v.y()), v.z());
564 }
565
luminosity(const Vec3 & rgb)566 inline float luminosity (const Vec3& rgb)
567 {
568 return dot(rgb, Vec3(0.3f, 0.59f, 0.11f));
569 }
570
saturation(const Vec3 & rgb)571 inline float saturation (const Vec3& rgb)
572 {
573 return maxComp(rgb) - minComp(rgb);
574 }
575
setLum(const Vec3 & cbase,const Vec3 & clum)576 Vec3 setLum (const Vec3& cbase, const Vec3& clum)
577 {
578 const float lbase = luminosity(cbase);
579 const float llum = luminosity(clum);
580 const float ldiff = llum - lbase;
581 const Vec3 color = cbase + Vec3(ldiff);
582 const float minC = minComp(color);
583 const float maxC = maxComp(color);
584
585 if (minC < 0.0f)
586 return llum + ((color-llum)*llum / (llum != minC ? (llum-minC) : 1.0f));
587 else if (maxC > 1.0f)
588 return llum + ((color-llum)*(1.0f-llum) / (llum != maxC ? (maxC-llum) : 1.0f));
589 else
590 return color;
591 }
592
setLumSat(const Vec3 & cbase,const Vec3 & csat,const Vec3 & clum)593 Vec3 setLumSat (const Vec3& cbase, const Vec3& csat, const Vec3& clum)
594 {
595 const float minbase = minComp(cbase);
596 const float sbase = saturation(cbase);
597 const float ssat = saturation(csat);
598 Vec3 color = Vec3(0.0f);
599
600 if (sbase > 0.0f)
601 color = (cbase - minbase) * ssat / sbase;
602
603 return setLum(color, clum);
604 }
605
606 } // advblend
607
executeAdvancedBlend(BlendEquationAdvanced equation)608 void FragmentProcessor::executeAdvancedBlend (BlendEquationAdvanced equation)
609 {
610 using namespace advblend;
611
612 #define SAMPLE_REGISTER_ADV_BLEND(FUNCTION_NAME) \
613 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++) \
614 { \
615 if (m_sampleRegister[regSampleNdx].isAlive) \
616 { \
617 SampleData& sample = m_sampleRegister[regSampleNdx]; \
618 const Vec4& srcColor = sample.clampedBlendSrcColor; \
619 const Vec4& dstColor = sample.clampedBlendDstColor; \
620 const Vec3& bias = sample.blendSrcFactorRGB; \
621 const float p0 = sample.blendSrcFactorA; \
622 const float r = FUNCTION_NAME(srcColor[0], dstColor[0])*p0 + bias[0]; \
623 const float g = FUNCTION_NAME(srcColor[1], dstColor[1])*p0 + bias[1]; \
624 const float b = FUNCTION_NAME(srcColor[2], dstColor[2])*p0 + bias[2]; \
625 \
626 sample.blendedRGB = Vec3(r, g, b); \
627 } \
628 }
629
630 #define SAMPLE_REGISTER_ADV_BLEND_HSL(COLOR_EXPRESSION) \
631 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++) \
632 { \
633 if (m_sampleRegister[regSampleNdx].isAlive) \
634 { \
635 SampleData& sample = m_sampleRegister[regSampleNdx]; \
636 const Vec3 srcColor = sample.clampedBlendSrcColor.swizzle(0,1,2); \
637 const Vec3 dstColor = sample.clampedBlendDstColor.swizzle(0,1,2); \
638 const Vec3& bias = sample.blendSrcFactorRGB; \
639 const float p0 = sample.blendSrcFactorA; \
640 \
641 sample.blendedRGB = (COLOR_EXPRESSION)*p0 + bias; \
642 } \
643 }
644
645 // Pre-compute factors & compute alpha \todo [2014-03-18 pyry] Re-using variable names.
646 // \note clampedBlend*Color contains clamped & unpremultiplied colors
647 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++)
648 {
649 if (m_sampleRegister[regSampleNdx].isAlive)
650 {
651 SampleData& sample = m_sampleRegister[regSampleNdx];
652 const Vec4& srcColor = sample.clampedBlendSrcColor;
653 const Vec4& dstColor = sample.clampedBlendDstColor;
654 const float srcA = srcColor.w();
655 const float dstA = dstColor.w();
656 const float p0 = srcA*dstA;
657 const float p1 = srcA*(1.0f-dstA);
658 const float p2 = dstA*(1.0f-srcA);
659 const Vec3 bias (srcColor[0]*p1 + dstColor[0]*p2,
660 srcColor[1]*p1 + dstColor[1]*p2,
661 srcColor[2]*p1 + dstColor[2]*p2);
662
663 sample.blendSrcFactorRGB = bias;
664 sample.blendSrcFactorA = p0;
665 sample.blendedA = p0 + p1 + p2;
666 }
667 }
668
669 switch (equation)
670 {
671 case BLENDEQUATION_ADVANCED_MULTIPLY: SAMPLE_REGISTER_ADV_BLEND(multiply); break;
672 case BLENDEQUATION_ADVANCED_SCREEN: SAMPLE_REGISTER_ADV_BLEND(screen); break;
673 case BLENDEQUATION_ADVANCED_OVERLAY: SAMPLE_REGISTER_ADV_BLEND(overlay); break;
674 case BLENDEQUATION_ADVANCED_DARKEN: SAMPLE_REGISTER_ADV_BLEND(darken); break;
675 case BLENDEQUATION_ADVANCED_LIGHTEN: SAMPLE_REGISTER_ADV_BLEND(lighten); break;
676 case BLENDEQUATION_ADVANCED_COLORDODGE: SAMPLE_REGISTER_ADV_BLEND(colordodge); break;
677 case BLENDEQUATION_ADVANCED_COLORBURN: SAMPLE_REGISTER_ADV_BLEND(colorburn); break;
678 case BLENDEQUATION_ADVANCED_HARDLIGHT: SAMPLE_REGISTER_ADV_BLEND(hardlight); break;
679 case BLENDEQUATION_ADVANCED_SOFTLIGHT: SAMPLE_REGISTER_ADV_BLEND(softlight); break;
680 case BLENDEQUATION_ADVANCED_DIFFERENCE: SAMPLE_REGISTER_ADV_BLEND(difference); break;
681 case BLENDEQUATION_ADVANCED_EXCLUSION: SAMPLE_REGISTER_ADV_BLEND(exclusion); break;
682 case BLENDEQUATION_ADVANCED_HSL_HUE: SAMPLE_REGISTER_ADV_BLEND_HSL(setLumSat(srcColor, dstColor, dstColor)); break;
683 case BLENDEQUATION_ADVANCED_HSL_SATURATION: SAMPLE_REGISTER_ADV_BLEND_HSL(setLumSat(dstColor, srcColor, dstColor)); break;
684 case BLENDEQUATION_ADVANCED_HSL_COLOR: SAMPLE_REGISTER_ADV_BLEND_HSL(setLum(srcColor, dstColor)); break;
685 case BLENDEQUATION_ADVANCED_HSL_LUMINOSITY: SAMPLE_REGISTER_ADV_BLEND_HSL(setLum(dstColor, srcColor)); break;
686 default:
687 DE_ASSERT(false);
688 }
689
690 #undef SAMPLE_REGISTER_ADV_BLEND
691 #undef SAMPLE_REGISTER_ADV_BLEND_HSL
692 }
693
executeColorWrite(int fragNdxOffset,int numSamplesPerFragment,const Fragment * inputFragments,bool isSRGB,const tcu::PixelBufferAccess & colorBuffer)694 void FragmentProcessor::executeColorWrite (int fragNdxOffset, int numSamplesPerFragment, const Fragment* inputFragments, bool isSRGB, const tcu::PixelBufferAccess& colorBuffer)
695 {
696 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++)
697 {
698 if (m_sampleRegister[regSampleNdx].isAlive)
699 {
700 int fragSampleNdx = regSampleNdx % numSamplesPerFragment;
701 const Fragment& frag = inputFragments[fragNdxOffset + regSampleNdx/numSamplesPerFragment];
702 Vec4 combinedColor;
703
704 combinedColor.xyz() = m_sampleRegister[regSampleNdx].blendedRGB;
705 combinedColor.w() = m_sampleRegister[regSampleNdx].blendedA;
706
707 if (isSRGB)
708 combinedColor = tcu::linearToSRGB(combinedColor);
709
710 colorBuffer.setPixel(combinedColor, fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y());
711 }
712 }
713 }
714
executeRGBA8ColorWrite(int fragNdxOffset,int numSamplesPerFragment,const Fragment * inputFragments,const tcu::PixelBufferAccess & colorBuffer)715 void FragmentProcessor::executeRGBA8ColorWrite (int fragNdxOffset, int numSamplesPerFragment, const Fragment* inputFragments, const tcu::PixelBufferAccess& colorBuffer)
716 {
717 const int fragStride = 4;
718 const int xStride = colorBuffer.getRowPitch();
719 const int yStride = colorBuffer.getSlicePitch();
720 deUint8* const basePtr = (deUint8*)colorBuffer.getDataPtr();
721
722 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++)
723 {
724 if (m_sampleRegister[regSampleNdx].isAlive)
725 {
726 const int fragSampleNdx = regSampleNdx % numSamplesPerFragment;
727 const Fragment& frag = inputFragments[fragNdxOffset + regSampleNdx/numSamplesPerFragment];
728 deUint8* dstPtr = basePtr + fragSampleNdx*fragStride + frag.pixelCoord.x()*xStride + frag.pixelCoord.y()*yStride;
729
730 dstPtr[0] = tcu::floatToU8(m_sampleRegister[regSampleNdx].blendedRGB.x());
731 dstPtr[1] = tcu::floatToU8(m_sampleRegister[regSampleNdx].blendedRGB.y());
732 dstPtr[2] = tcu::floatToU8(m_sampleRegister[regSampleNdx].blendedRGB.z());
733 dstPtr[3] = tcu::floatToU8(m_sampleRegister[regSampleNdx].blendedA);
734 }
735 }
736 }
737
executeMaskedColorWrite(int fragNdxOffset,int numSamplesPerFragment,const Fragment * inputFragments,const Vec4 & colorMaskFactor,const Vec4 & colorMaskNegationFactor,bool isSRGB,const tcu::PixelBufferAccess & colorBuffer)738 void FragmentProcessor::executeMaskedColorWrite (int fragNdxOffset, int numSamplesPerFragment, const Fragment* inputFragments, const Vec4& colorMaskFactor, const Vec4& colorMaskNegationFactor, bool isSRGB, const tcu::PixelBufferAccess& colorBuffer)
739 {
740 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++)
741 {
742 if (m_sampleRegister[regSampleNdx].isAlive)
743 {
744 int fragSampleNdx = regSampleNdx % numSamplesPerFragment;
745 const Fragment& frag = inputFragments[fragNdxOffset + regSampleNdx/numSamplesPerFragment];
746 Vec4 originalColor = colorBuffer.getPixel(fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y());
747 Vec4 newColor;
748
749 newColor.xyz() = m_sampleRegister[regSampleNdx].blendedRGB;
750 newColor.w() = m_sampleRegister[regSampleNdx].blendedA;
751
752 if (isSRGB)
753 newColor = tcu::linearToSRGB(newColor);
754
755 newColor = colorMaskFactor*newColor + colorMaskNegationFactor*originalColor;
756
757 colorBuffer.setPixel(newColor, fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y());
758 }
759 }
760 }
761
executeSignedValueWrite(int fragNdxOffset,int numSamplesPerFragment,const Fragment * inputFragments,const tcu::BVec4 & colorMask,const tcu::PixelBufferAccess & colorBuffer)762 void FragmentProcessor::executeSignedValueWrite (int fragNdxOffset, int numSamplesPerFragment, const Fragment* inputFragments, const tcu::BVec4& colorMask, const tcu::PixelBufferAccess& colorBuffer)
763 {
764 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++)
765 {
766 if (m_sampleRegister[regSampleNdx].isAlive)
767 {
768 int fragSampleNdx = regSampleNdx % numSamplesPerFragment;
769 const Fragment& frag = inputFragments[fragNdxOffset + regSampleNdx/numSamplesPerFragment];
770 const IVec4 originalValue = colorBuffer.getPixelInt(fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y());
771
772 colorBuffer.setPixel(tcu::select(m_sampleRegister[regSampleNdx].signedValue, originalValue, colorMask), fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y());
773 }
774 }
775 }
776
executeUnsignedValueWrite(int fragNdxOffset,int numSamplesPerFragment,const Fragment * inputFragments,const tcu::BVec4 & colorMask,const tcu::PixelBufferAccess & colorBuffer)777 void FragmentProcessor::executeUnsignedValueWrite (int fragNdxOffset, int numSamplesPerFragment, const Fragment* inputFragments, const tcu::BVec4& colorMask, const tcu::PixelBufferAccess& colorBuffer)
778 {
779 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++)
780 {
781 if (m_sampleRegister[regSampleNdx].isAlive)
782 {
783 int fragSampleNdx = regSampleNdx % numSamplesPerFragment;
784 const Fragment& frag = inputFragments[fragNdxOffset + regSampleNdx/numSamplesPerFragment];
785 const UVec4 originalValue = colorBuffer.getPixelUint(fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y());
786
787 colorBuffer.setPixel(tcu::select(m_sampleRegister[regSampleNdx].unsignedValue, originalValue, colorMask), fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y());
788 }
789 }
790 }
791
render(const rr::MultisamplePixelBufferAccess & msColorBuffer,const rr::MultisamplePixelBufferAccess & msDepthBuffer,const rr::MultisamplePixelBufferAccess & msStencilBuffer,const Fragment * inputFragments,int numFragments,FaceType fragmentFacing,const FragmentOperationState & state)792 void FragmentProcessor::render (const rr::MultisamplePixelBufferAccess& msColorBuffer,
793 const rr::MultisamplePixelBufferAccess& msDepthBuffer,
794 const rr::MultisamplePixelBufferAccess& msStencilBuffer,
795 const Fragment* inputFragments,
796 int numFragments,
797 FaceType fragmentFacing,
798 const FragmentOperationState& state)
799 {
800 DE_ASSERT(fragmentFacing < FACETYPE_LAST);
801 DE_ASSERT(state.numStencilBits < 32); // code bitshifts numStencilBits, avoid undefined behavior
802
803 const tcu::PixelBufferAccess& colorBuffer = msColorBuffer.raw();
804 const tcu::PixelBufferAccess& depthBuffer = msDepthBuffer.raw();
805 const tcu::PixelBufferAccess& stencilBuffer = msStencilBuffer.raw();
806
807 bool hasDepth = depthBuffer.getWidth() > 0 && depthBuffer.getHeight() > 0 && depthBuffer.getDepth() > 0;
808 bool hasStencil = stencilBuffer.getWidth() > 0 && stencilBuffer.getHeight() > 0 && stencilBuffer.getDepth() > 0;
809 bool doDepthBoundsTest = hasDepth && state.depthBoundsTestEnabled;
810 bool doDepthTest = hasDepth && state.depthTestEnabled;
811 bool doStencilTest = hasStencil && state.stencilTestEnabled;
812
813 tcu::TextureChannelClass colorbufferClass = tcu::getTextureChannelClass(msColorBuffer.raw().getFormat().type);
814 rr::GenericVecType fragmentDataType = (colorbufferClass == tcu::TEXTURECHANNELCLASS_SIGNED_INTEGER) ? (rr::GENERICVECTYPE_INT32) : ((colorbufferClass == tcu::TEXTURECHANNELCLASS_UNSIGNED_INTEGER) ? (rr::GENERICVECTYPE_UINT32) : (rr::GENERICVECTYPE_FLOAT));
815
816 DE_ASSERT((!hasDepth || colorBuffer.getWidth() == depthBuffer.getWidth()) && (!hasStencil || colorBuffer.getWidth() == stencilBuffer.getWidth()));
817 DE_ASSERT((!hasDepth || colorBuffer.getHeight() == depthBuffer.getHeight()) && (!hasStencil || colorBuffer.getHeight() == stencilBuffer.getHeight()));
818 DE_ASSERT((!hasDepth || colorBuffer.getDepth() == depthBuffer.getDepth()) && (!hasStencil || colorBuffer.getDepth() == stencilBuffer.getDepth()));
819
820 // Combined formats must be separated beforehand
821 DE_ASSERT(!hasDepth || (!tcu::isCombinedDepthStencilType(depthBuffer.getFormat().type) && depthBuffer.getFormat().order == tcu::TextureFormat::D));
822 DE_ASSERT(!hasStencil || (!tcu::isCombinedDepthStencilType(stencilBuffer.getFormat().type) && stencilBuffer.getFormat().order == tcu::TextureFormat::S));
823
824 int numSamplesPerFragment = colorBuffer.getWidth();
825 int totalNumSamples = numFragments*numSamplesPerFragment;
826 int numSampleGroups = (totalNumSamples - 1) / SAMPLE_REGISTER_SIZE + 1; // \note totalNumSamples/SAMPLE_REGISTER_SIZE rounded up.
827 const StencilState& stencilState = state.stencilStates[fragmentFacing];
828 Vec4 colorMaskFactor (state.colorMask[0] ? 1.0f : 0.0f, state.colorMask[1] ? 1.0f : 0.0f, state.colorMask[2] ? 1.0f : 0.0f, state.colorMask[3] ? 1.0f : 0.0f);
829 Vec4 colorMaskNegationFactor (state.colorMask[0] ? 0.0f : 1.0f, state.colorMask[1] ? 0.0f : 1.0f, state.colorMask[2] ? 0.0f : 1.0f, state.colorMask[3] ? 0.0f : 1.0f);
830 bool sRGBTarget = state.sRGBEnabled && tcu::isSRGB(colorBuffer.getFormat());
831
832 DE_ASSERT(SAMPLE_REGISTER_SIZE % numSamplesPerFragment == 0);
833
834 // Divide the fragments' samples into groups of size SAMPLE_REGISTER_SIZE, and perform
835 // the per-sample operations for one group at a time.
836
837 for (int sampleGroupNdx = 0; sampleGroupNdx < numSampleGroups; sampleGroupNdx++)
838 {
839 // The index of the fragment of the sample at the beginning of m_sampleRegisters.
840 int groupFirstFragNdx = (sampleGroupNdx*SAMPLE_REGISTER_SIZE) / numSamplesPerFragment;
841
842 // Initialize sample data in the sample register.
843
844 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++)
845 {
846 int fragNdx = groupFirstFragNdx + regSampleNdx/numSamplesPerFragment;
847 int fragSampleNdx = regSampleNdx % numSamplesPerFragment;
848
849 if (fragNdx < numFragments)
850 {
851 m_sampleRegister[regSampleNdx].isAlive = (inputFragments[fragNdx].coverage & (1u << fragSampleNdx)) != 0;
852 m_sampleRegister[regSampleNdx].depthPassed = true; // \note This will stay true if depth test is disabled.
853 }
854 else
855 m_sampleRegister[regSampleNdx].isAlive = false;
856 }
857
858 // Scissor test.
859
860 if (state.scissorTestEnabled)
861 executeScissorTest(groupFirstFragNdx, numSamplesPerFragment, inputFragments, state.scissorRectangle);
862
863 // Depth bounds test.
864
865 if (doDepthBoundsTest)
866 executeDepthBoundsTest(groupFirstFragNdx, numSamplesPerFragment, inputFragments, state.minDepthBound, state.maxDepthBound, depthBuffer);
867
868 // Stencil test.
869
870 if (doStencilTest)
871 {
872 executeStencilCompare(groupFirstFragNdx, numSamplesPerFragment, inputFragments, stencilState, state.numStencilBits, stencilBuffer);
873 executeStencilSFail(groupFirstFragNdx, numSamplesPerFragment, inputFragments, stencilState, state.numStencilBits, stencilBuffer);
874 }
875
876 // Depth test.
877 // \note Current value of isAlive is needed for dpPass and dpFail, so it's only updated after them and not right after depth test.
878
879 if (doDepthTest)
880 {
881 executeDepthCompare(groupFirstFragNdx, numSamplesPerFragment, inputFragments, state.depthFunc, depthBuffer);
882
883 if (state.depthMask)
884 executeDepthWrite(groupFirstFragNdx, numSamplesPerFragment, inputFragments, depthBuffer);
885 }
886
887 // Do dpFail and dpPass stencil writes.
888
889 if (doStencilTest)
890 executeStencilDpFailAndPass(groupFirstFragNdx, numSamplesPerFragment, inputFragments, stencilState, state.numStencilBits, stencilBuffer);
891
892 // Kill the samples that failed depth test.
893
894 if (doDepthTest)
895 {
896 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++)
897 m_sampleRegister[regSampleNdx].isAlive = m_sampleRegister[regSampleNdx].isAlive && m_sampleRegister[regSampleNdx].depthPassed;
898 }
899
900 // Paint fragments to target
901
902 switch (fragmentDataType)
903 {
904 case rr::GENERICVECTYPE_FLOAT:
905 {
906 // Select min/max clamping values for blending factors and operands
907 Vec4 minClampValue;
908 Vec4 maxClampValue;
909
910 if (colorbufferClass == tcu::TEXTURECHANNELCLASS_UNSIGNED_FIXED_POINT)
911 {
912 minClampValue = Vec4(0.0f);
913 maxClampValue = Vec4(1.0f);
914 }
915 else if (colorbufferClass == tcu::TEXTURECHANNELCLASS_SIGNED_FIXED_POINT)
916 {
917 minClampValue = Vec4(-1.0f);
918 maxClampValue = Vec4(1.0f);
919 }
920 else
921 {
922 // No clamping
923 minClampValue = Vec4(-std::numeric_limits<float>::infinity());
924 maxClampValue = Vec4(std::numeric_limits<float>::infinity());
925 }
926
927 // Blend calculation - only if using blend.
928 if (state.blendMode == BLENDMODE_STANDARD)
929 {
930 // Put dst color to register, doing srgb-to-linear conversion if needed.
931 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++)
932 {
933 if (m_sampleRegister[regSampleNdx].isAlive)
934 {
935 int fragSampleNdx = regSampleNdx % numSamplesPerFragment;
936 const Fragment& frag = inputFragments[groupFirstFragNdx + regSampleNdx/numSamplesPerFragment];
937 Vec4 dstColor = colorBuffer.getPixel(fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y());
938
939 m_sampleRegister[regSampleNdx].clampedBlendSrcColor = clamp(frag.value.get<float>(), minClampValue, maxClampValue);
940 m_sampleRegister[regSampleNdx].clampedBlendSrc1Color = clamp(frag.value1.get<float>(), minClampValue, maxClampValue);
941 m_sampleRegister[regSampleNdx].clampedBlendDstColor = clamp(sRGBTarget ? tcu::sRGBToLinear(dstColor) : dstColor, minClampValue, maxClampValue);
942 }
943 }
944
945 // Calculate blend factors to register.
946 executeBlendFactorComputeRGB(state.blendColor, state.blendRGBState);
947 executeBlendFactorComputeA(state.blendColor, state.blendAState);
948
949 // Compute blended color.
950 executeBlend(state.blendRGBState, state.blendAState);
951 }
952 else if (state.blendMode == BLENDMODE_ADVANCED)
953 {
954 // Unpremultiply colors for blending, and do sRGB->linear if necessary
955 // \todo [2014-03-17 pyry] Re-consider clampedBlend*Color var names
956 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++)
957 {
958 if (m_sampleRegister[regSampleNdx].isAlive)
959 {
960 int fragSampleNdx = regSampleNdx % numSamplesPerFragment;
961 const Fragment& frag = inputFragments[groupFirstFragNdx + regSampleNdx/numSamplesPerFragment];
962 const Vec4 srcColor = frag.value.get<float>();
963 const Vec4 dstColor = colorBuffer.getPixel(fragSampleNdx, frag.pixelCoord.x(), frag.pixelCoord.y());
964
965 m_sampleRegister[regSampleNdx].clampedBlendSrcColor = unpremultiply(clamp(srcColor, minClampValue, maxClampValue));
966 m_sampleRegister[regSampleNdx].clampedBlendDstColor = unpremultiply(clamp(sRGBTarget ? tcu::sRGBToLinear(dstColor) : dstColor, minClampValue, maxClampValue));
967 }
968 }
969
970 executeAdvancedBlend(state.blendEquationAdvaced);
971 }
972 else
973 {
974 // Not using blend - just put values to register as-is.
975 DE_ASSERT(state.blendMode == BLENDMODE_NONE);
976
977 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++)
978 {
979 if (m_sampleRegister[regSampleNdx].isAlive)
980 {
981 const Fragment& frag = inputFragments[groupFirstFragNdx + regSampleNdx/numSamplesPerFragment];
982
983 m_sampleRegister[regSampleNdx].blendedRGB = frag.value.get<float>().xyz();
984 m_sampleRegister[regSampleNdx].blendedA = frag.value.get<float>().w();
985 }
986 }
987 }
988
989 // Clamp result values in sample register
990 if (colorbufferClass != tcu::TEXTURECHANNELCLASS_FLOATING_POINT)
991 {
992 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++)
993 {
994 if (m_sampleRegister[regSampleNdx].isAlive)
995 {
996 m_sampleRegister[regSampleNdx].blendedRGB = clamp(m_sampleRegister[regSampleNdx].blendedRGB, minClampValue.swizzle(0, 1, 2), maxClampValue.swizzle(0, 1, 2));
997 m_sampleRegister[regSampleNdx].blendedA = clamp(m_sampleRegister[regSampleNdx].blendedA, minClampValue.w(), maxClampValue.w());
998 }
999 }
1000 }
1001
1002 // Finally, write the colors to the color buffer.
1003
1004 if (state.colorMask[0] && state.colorMask[1] && state.colorMask[2] && state.colorMask[3])
1005 {
1006 if (colorBuffer.getFormat() == tcu::TextureFormat(tcu::TextureFormat::RGBA, tcu::TextureFormat::UNORM_INT8))
1007 executeRGBA8ColorWrite(groupFirstFragNdx, numSamplesPerFragment, inputFragments, colorBuffer);
1008 else
1009 executeColorWrite(groupFirstFragNdx, numSamplesPerFragment, inputFragments, sRGBTarget, colorBuffer);
1010 }
1011 else if (state.colorMask[0] || state.colorMask[1] || state.colorMask[2] || state.colorMask[3])
1012 executeMaskedColorWrite(groupFirstFragNdx, numSamplesPerFragment, inputFragments, colorMaskFactor, colorMaskNegationFactor, sRGBTarget, colorBuffer);
1013 break;
1014 }
1015 case rr::GENERICVECTYPE_INT32:
1016 // Write fragments
1017 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++)
1018 {
1019 if (m_sampleRegister[regSampleNdx].isAlive)
1020 {
1021 const Fragment& frag = inputFragments[groupFirstFragNdx + regSampleNdx/numSamplesPerFragment];
1022
1023 m_sampleRegister[regSampleNdx].signedValue = frag.value.get<deInt32>();
1024 }
1025 }
1026
1027 if (state.colorMask[0] || state.colorMask[1] || state.colorMask[2] || state.colorMask[3])
1028 executeSignedValueWrite(groupFirstFragNdx, numSamplesPerFragment, inputFragments, state.colorMask, colorBuffer);
1029 break;
1030
1031 case rr::GENERICVECTYPE_UINT32:
1032 // Write fragments
1033 for (int regSampleNdx = 0; regSampleNdx < SAMPLE_REGISTER_SIZE; regSampleNdx++)
1034 {
1035 if (m_sampleRegister[regSampleNdx].isAlive)
1036 {
1037 const Fragment& frag = inputFragments[groupFirstFragNdx + regSampleNdx/numSamplesPerFragment];
1038
1039 m_sampleRegister[regSampleNdx].unsignedValue = frag.value.get<deUint32>();
1040 }
1041 }
1042
1043 if (state.colorMask[0] || state.colorMask[1] || state.colorMask[2] || state.colorMask[3])
1044 executeUnsignedValueWrite(groupFirstFragNdx, numSamplesPerFragment, inputFragments, state.colorMask, colorBuffer);
1045 break;
1046
1047 default:
1048 DE_ASSERT(DE_FALSE);
1049 }
1050 }
1051 }
1052
1053 } // rr
1054