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