bsalomon | 50785a3 | 2015-02-06 07:02:37 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "GrXferProcessor.h" |
| 9 | #include "gl/GrGLCaps.h" |
| 10 | |
egdaniel | c19cdc2 | 2015-05-10 08:45:18 -0700 | [diff] [blame] | 11 | GrXferProcessor::GrXferProcessor() |
| 12 | : fWillReadDstColor(false), fReadsCoverage(true), fDstCopyTextureOffset() { |
bsalomon | 50785a3 | 2015-02-06 07:02:37 -0800 | [diff] [blame] | 13 | } |
| 14 | |
| 15 | GrXferProcessor::GrXferProcessor(const GrDeviceCoordTexture* dstCopy, bool willReadDstColor) |
| 16 | : fWillReadDstColor(willReadDstColor) |
egdaniel | c19cdc2 | 2015-05-10 08:45:18 -0700 | [diff] [blame] | 17 | , fReadsCoverage(true) |
bsalomon | 50785a3 | 2015-02-06 07:02:37 -0800 | [diff] [blame] | 18 | , fDstCopyTextureOffset() { |
| 19 | if (dstCopy && dstCopy->texture()) { |
| 20 | fDstCopy.reset(dstCopy->texture()); |
| 21 | fDstCopyTextureOffset = dstCopy->offset(); |
| 22 | this->addTextureAccess(&fDstCopy); |
egdaniel | 060a52c | 2015-04-07 07:31:11 -0700 | [diff] [blame] | 23 | this->setWillReadFragmentPosition(); |
bsalomon | 50785a3 | 2015-02-06 07:02:37 -0800 | [diff] [blame] | 24 | } |
| 25 | } |
| 26 | |
egdaniel | c19cdc2 | 2015-05-10 08:45:18 -0700 | [diff] [blame] | 27 | GrXferProcessor::OptFlags GrXferProcessor::getOptimizations(const GrProcOptInfo& colorPOI, |
| 28 | const GrProcOptInfo& coveragePOI, |
| 29 | bool doesStencilWrite, |
| 30 | GrColor* overrideColor, |
bsalomon | 4b91f76 | 2015-05-19 09:29:46 -0700 | [diff] [blame^] | 31 | const GrCaps& caps) { |
egdaniel | c19cdc2 | 2015-05-10 08:45:18 -0700 | [diff] [blame] | 32 | GrXferProcessor::OptFlags flags = this->onGetOptimizations(colorPOI, |
| 33 | coveragePOI, |
| 34 | doesStencilWrite, |
| 35 | overrideColor, |
| 36 | caps); |
| 37 | |
| 38 | if (flags & GrXferProcessor::kIgnoreCoverage_OptFlag) { |
| 39 | fReadsCoverage = false; |
| 40 | } |
| 41 | return flags; |
| 42 | } |
| 43 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 44 | void GrXferProcessor::getGLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) const { |
bsalomon | 50785a3 | 2015-02-06 07:02:37 -0800 | [diff] [blame] | 45 | uint32_t key = this->willReadDstColor() ? 0x1 : 0x0; |
| 46 | if (this->getDstCopyTexture() && |
| 47 | kTopLeft_GrSurfaceOrigin == this->getDstCopyTexture()->origin()) { |
| 48 | key |= 0x2; |
| 49 | } |
| 50 | b->add32(key); |
| 51 | this->onGetGLProcessorKey(caps, b); |
| 52 | } |
| 53 | |
cdalton | 9954bc3 | 2015-04-29 14:17:00 -0700 | [diff] [blame] | 54 | bool GrXferProcessor::willNeedXferBarrier(const GrRenderTarget* rt, |
bsalomon | 4b91f76 | 2015-05-19 09:29:46 -0700 | [diff] [blame^] | 55 | const GrCaps& caps, |
cdalton | 9954bc3 | 2015-04-29 14:17:00 -0700 | [diff] [blame] | 56 | GrXferBarrierType* outBarrierType) const { |
| 57 | if (static_cast<const GrSurface*>(rt) == this->getDstCopyTexture()) { |
| 58 | // Texture barriers are required when a shader reads and renders to the same texture. |
| 59 | SkASSERT(rt); |
| 60 | SkASSERT(caps.textureBarrierSupport()); |
| 61 | *outBarrierType = kTexture_GrXferBarrierType; |
| 62 | return true; |
| 63 | } |
cdalton | 8917d62 | 2015-05-06 13:40:21 -0700 | [diff] [blame] | 64 | return this->onWillNeedXferBarrier(rt, caps, outBarrierType); |
cdalton | 9954bc3 | 2015-04-29 14:17:00 -0700 | [diff] [blame] | 65 | } |
| 66 | |
bsalomon | f7cc877 | 2015-05-11 11:21:14 -0700 | [diff] [blame] | 67 | #ifdef SK_DEBUG |
| 68 | static const char* equation_string(GrBlendEquation eq) { |
| 69 | switch (eq) { |
| 70 | case kAdd_GrBlendEquation: |
| 71 | return "add"; |
| 72 | case kSubtract_GrBlendEquation: |
| 73 | return "subtract"; |
| 74 | case kReverseSubtract_GrBlendEquation: |
| 75 | return "reverse_subtract"; |
| 76 | case kScreen_GrBlendEquation: |
| 77 | return "screen"; |
| 78 | case kOverlay_GrBlendEquation: |
| 79 | return "overlay"; |
| 80 | case kDarken_GrBlendEquation: |
| 81 | return "darken"; |
| 82 | case kLighten_GrBlendEquation: |
| 83 | return "lighten"; |
| 84 | case kColorDodge_GrBlendEquation: |
| 85 | return "color_dodge"; |
| 86 | case kColorBurn_GrBlendEquation: |
| 87 | return "color_burn"; |
| 88 | case kHardLight_GrBlendEquation: |
| 89 | return "hard_light"; |
| 90 | case kSoftLight_GrBlendEquation: |
| 91 | return "soft_light"; |
| 92 | case kDifference_GrBlendEquation: |
| 93 | return "difference"; |
| 94 | case kExclusion_GrBlendEquation: |
| 95 | return "exclusion"; |
| 96 | case kMultiply_GrBlendEquation: |
| 97 | return "multiply"; |
| 98 | case kHSLHue_GrBlendEquation: |
| 99 | return "hsl_hue"; |
| 100 | case kHSLSaturation_GrBlendEquation: |
| 101 | return "hsl_saturation"; |
| 102 | case kHSLColor_GrBlendEquation: |
| 103 | return "hsl_color"; |
| 104 | case kHSLLuminosity_GrBlendEquation: |
| 105 | return "hsl_luminosity"; |
| 106 | }; |
| 107 | return ""; |
| 108 | } |
| 109 | |
| 110 | static const char* coeff_string(GrBlendCoeff coeff) { |
| 111 | switch (coeff) { |
| 112 | case kZero_GrBlendCoeff: |
| 113 | return "zero"; |
| 114 | case kOne_GrBlendCoeff: |
| 115 | return "one"; |
| 116 | case kSC_GrBlendCoeff: |
| 117 | return "src_color"; |
| 118 | case kISC_GrBlendCoeff: |
| 119 | return "inv_src_color"; |
| 120 | case kDC_GrBlendCoeff: |
| 121 | return "dst_color"; |
| 122 | case kIDC_GrBlendCoeff: |
| 123 | return "inv_dst_color"; |
| 124 | case kSA_GrBlendCoeff: |
| 125 | return "src_alpha"; |
| 126 | case kISA_GrBlendCoeff: |
| 127 | return "inv_src_alpha"; |
| 128 | case kDA_GrBlendCoeff: |
| 129 | return "dst_alpha"; |
| 130 | case kIDA_GrBlendCoeff: |
| 131 | return "inv_dst_alpha"; |
| 132 | case kConstC_GrBlendCoeff: |
| 133 | return "const_color"; |
| 134 | case kIConstC_GrBlendCoeff: |
| 135 | return "inv_const_color"; |
| 136 | case kConstA_GrBlendCoeff: |
| 137 | return "const_alpha"; |
| 138 | case kIConstA_GrBlendCoeff: |
| 139 | return "inv_const_alpha"; |
| 140 | case kS2C_GrBlendCoeff: |
| 141 | return "src2_color"; |
| 142 | case kIS2C_GrBlendCoeff: |
| 143 | return "inv_src2_color"; |
| 144 | case kS2A_GrBlendCoeff: |
| 145 | return "src2_alpha"; |
| 146 | case kIS2A_GrBlendCoeff: |
| 147 | return "inv_src2_alpha"; |
| 148 | } |
| 149 | return ""; |
| 150 | } |
| 151 | |
| 152 | SkString GrXferProcessor::BlendInfo::dump() const { |
| 153 | SkString out; |
| 154 | out.printf("write_color(%d) equation(%s) src_coeff(%s) dst_coeff:(%s) const(0x%08x)", |
| 155 | fWriteColor, equation_string(fEquation), coeff_string(fSrcBlend), |
| 156 | coeff_string(fDstBlend), fBlendConstant); |
| 157 | return out; |
| 158 | } |
| 159 | #endif |
| 160 | |
bsalomon | 50785a3 | 2015-02-06 07:02:37 -0800 | [diff] [blame] | 161 | /////////////////////////////////////////////////////////////////////////////// |
| 162 | |
| 163 | GrXferProcessor* GrXPFactory::createXferProcessor(const GrProcOptInfo& colorPOI, |
| 164 | const GrProcOptInfo& coveragePOI, |
| 165 | const GrDeviceCoordTexture* dstCopy, |
bsalomon | 4b91f76 | 2015-05-19 09:29:46 -0700 | [diff] [blame^] | 166 | const GrCaps& caps) const { |
bsalomon | 50785a3 | 2015-02-06 07:02:37 -0800 | [diff] [blame] | 167 | #ifdef SK_DEBUG |
egdaniel | 3ad6570 | 2015-02-17 11:15:47 -0800 | [diff] [blame] | 168 | if (this->willReadDstColor(caps, colorPOI, coveragePOI)) { |
jvanverth | e9c0fc6 | 2015-04-29 11:18:05 -0700 | [diff] [blame] | 169 | if (!caps.shaderCaps()->dstReadInShaderSupport()) { |
bsalomon | 50785a3 | 2015-02-06 07:02:37 -0800 | [diff] [blame] | 170 | SkASSERT(dstCopy && dstCopy->texture()); |
| 171 | } else { |
| 172 | SkASSERT(!dstCopy || !dstCopy->texture()); |
| 173 | } |
| 174 | } else { |
| 175 | SkASSERT(!dstCopy || !dstCopy->texture()); |
bsalomon | 50785a3 | 2015-02-06 07:02:37 -0800 | [diff] [blame] | 176 | } |
| 177 | #endif |
egdaniel | 3ad6570 | 2015-02-17 11:15:47 -0800 | [diff] [blame] | 178 | return this->onCreateXferProcessor(caps, colorPOI, coveragePOI, dstCopy); |
bsalomon | 50785a3 | 2015-02-06 07:02:37 -0800 | [diff] [blame] | 179 | } |
| 180 | |
bsalomon | 4b91f76 | 2015-05-19 09:29:46 -0700 | [diff] [blame^] | 181 | bool GrXPFactory::willNeedDstCopy(const GrCaps& caps, const GrProcOptInfo& colorPOI, |
egdaniel | e36914c | 2015-02-13 09:00:33 -0800 | [diff] [blame] | 182 | const GrProcOptInfo& coveragePOI) const { |
jvanverth | e9c0fc6 | 2015-04-29 11:18:05 -0700 | [diff] [blame] | 183 | return (this->willReadDstColor(caps, colorPOI, coveragePOI) |
| 184 | && !caps.shaderCaps()->dstReadInShaderSupport()); |
bsalomon | 50785a3 | 2015-02-06 07:02:37 -0800 | [diff] [blame] | 185 | } |
| 186 | |