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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 #include "GrGLProgramDesc.h" | 7 #include "GrGLProgramDesc.h" |
8 | 8 |
9 #include "GrProcessor.h" | 9 #include "GrProcessor.h" |
10 #include "GrPipeline.h" | 10 #include "GrPipeline.h" |
11 #include "GrRenderTargetPriv.h" | 11 #include "GrRenderTargetPriv.h" |
12 #include "SkChecksum.h" | 12 #include "SkChecksum.h" |
13 #include "gl/GrGLDefines.h" | 13 #include "gl/GrGLDefines.h" |
14 #include "gl/GrGLTexture.h" | 14 #include "gl/GrGLTexture.h" |
15 #include "gl/GrGLTypes.h" | 15 #include "gl/GrGLTypes.h" |
16 #include "glsl/GrGLSLFragmentProcessor.h" | 16 #include "glsl/GrGLSLFragmentProcessor.h" |
17 #include "glsl/GrGLSLFragmentShaderBuilder.h" | 17 #include "glsl/GrGLSLFragmentShaderBuilder.h" |
18 #include "glsl/GrGLSLCaps.h" | 18 #include "glsl/GrGLSLCaps.h" |
19 | 19 |
20 static uint16_t texture_key(GrSLType samplerType, GrPixelConfig config, GrShader
Flags visibility, | 20 static uint16_t sampler_key(GrSLType samplerType, GrPixelConfig config, GrShader
Flags visibility, |
21 const GrGLSLCaps& caps) { | 21 const GrGLSLCaps& caps) { |
22 enum { | 22 enum { |
23 kFirstSamplerType = kSampler2D_GrSLType, | 23 kFirstSamplerType = kSampler2D_GrSLType, |
24 kLastSamplerType = kSampler2DRect_GrSLType, | 24 kLastSamplerType = kSamplerBuffer_GrSLType, |
25 kSamplerTypeKeyBits = 4 | 25 kSamplerTypeKeyBits = 4 |
26 }; | 26 }; |
27 GR_STATIC_ASSERT(kLastSamplerType - kFirstSamplerType < (1 << kSamplerTypeKe
yBits)); | 27 GR_STATIC_ASSERT(kLastSamplerType - kFirstSamplerType < (1 << kSamplerTypeKe
yBits)); |
28 | 28 |
29 SkASSERT((int)samplerType >= kFirstSamplerType && (int)samplerType <= kLastS
amplerType); | 29 SkASSERT((int)samplerType >= kFirstSamplerType && (int)samplerType <= kLastS
amplerType); |
30 int samplerTypeKey = samplerType - kFirstSamplerType; | 30 int samplerTypeKey = samplerType - kFirstSamplerType; |
31 | 31 |
32 return SkToU16(caps.configTextureSwizzle(config).asKey() | | 32 return SkToU16(caps.configTextureSwizzle(config).asKey() | |
33 (samplerTypeKey << 8) | | 33 (samplerTypeKey << 8) | |
34 (caps.samplerPrecision(config, visibility) << (8 + kSamplerTy
peKeyBits))); | 34 (caps.samplerPrecision(config, visibility) << (8 + kSamplerTy
peKeyBits))); |
35 } | 35 } |
36 | 36 |
37 static void add_texture_key(GrProcessorKeyBuilder* b, const GrProcessor& proc, | 37 static void add_sampler_keys(GrProcessorKeyBuilder* b, const GrProcessor& proc, |
38 const GrGLSLCaps& caps) { | 38 const GrGLSLCaps& caps) { |
39 int numTextures = proc.numTextures(); | 39 int numTextures = proc.numTextures(); |
| 40 int numSamplers = numTextures + proc.numBuffers(); |
40 // Need two bytes per key (swizzle, sampler type, and precision). | 41 // Need two bytes per key (swizzle, sampler type, and precision). |
41 int word32Count = (proc.numTextures() + 1) / 2; | 42 int word32Count = (numSamplers + 1) / 2; |
42 if (0 == word32Count) { | 43 if (0 == word32Count) { |
43 return; | 44 return; |
44 } | 45 } |
45 uint16_t* k16 = SkTCast<uint16_t*>(b->add32n(word32Count)); | 46 uint16_t* k16 = SkTCast<uint16_t*>(b->add32n(word32Count)); |
46 for (int i = 0; i < numTextures; ++i) { | 47 int i = 0; |
| 48 for (; i < numTextures; ++i) { |
47 const GrTextureAccess& access = proc.textureAccess(i); | 49 const GrTextureAccess& access = proc.textureAccess(i); |
48 const GrTexture* tex = access.getTexture(); | 50 const GrTexture* tex = access.getTexture(); |
49 k16[i] = texture_key(tex->samplerType(), tex->config(), access.getVisibi
lity(), caps); | 51 k16[i] = sampler_key(tex->samplerType(), tex->config(), access.getVisibi
lity(), caps); |
50 } | 52 } |
51 // zero the last 16 bits if the number of textures is odd. | 53 for (; i < numSamplers; ++i) { |
52 if (numTextures & 0x1) { | 54 const GrBufferAccess& access = proc.bufferAccess(i - numTextures); |
53 k16[numTextures] = 0; | 55 k16[i] = sampler_key(kSamplerBuffer_GrSLType, access.texelConfig(), acce
ss.visibility(), |
| 56 caps); |
| 57 } |
| 58 // zero the last 16 bits if the number of samplers is odd. |
| 59 if (numSamplers & 0x1) { |
| 60 k16[numSamplers] = 0; |
54 } | 61 } |
55 } | 62 } |
56 | 63 |
57 /** | 64 /** |
58 * A function which emits a meta key into the key builder. This is required bec
ause shader code may | 65 * A function which emits a meta key into the key builder. This is required bec
ause shader code may |
59 * be dependent on properties of the effect that the effect itself doesn't use | 66 * be dependent on properties of the effect that the effect itself doesn't use |
60 * in its key (e.g. the pixel format of textures used). So we create a meta-key
for | 67 * in its key (e.g. the pixel format of textures used). So we create a meta-key
for |
61 * every effect using this function. It is also responsible for inserting the ef
fect's class ID | 68 * every effect using this function. It is also responsible for inserting the ef
fect's class ID |
62 * which must be different for every GrProcessor subclass. It can fail if an eff
ect uses too many | 69 * which must be different for every GrProcessor subclass. It can fail if an eff
ect uses too many |
63 * transforms, etc, for the space allotted in the meta-key. NOTE, both FPs and
GPs share this | 70 * transforms, etc, for the space allotted in the meta-key. NOTE, both FPs and
GPs share this |
64 * function because it is hairy, though FPs do not have attribs, and GPs do not
have transforms | 71 * function because it is hairy, though FPs do not have attribs, and GPs do not
have transforms |
65 */ | 72 */ |
66 static bool gen_meta_key(const GrProcessor& proc, | 73 static bool gen_meta_key(const GrProcessor& proc, |
67 const GrGLSLCaps& glslCaps, | 74 const GrGLSLCaps& glslCaps, |
68 uint32_t transformKey, | 75 uint32_t transformKey, |
69 GrProcessorKeyBuilder* b) { | 76 GrProcessorKeyBuilder* b) { |
70 size_t processorKeySize = b->size(); | 77 size_t processorKeySize = b->size(); |
71 uint32_t classID = proc.classID(); | 78 uint32_t classID = proc.classID(); |
72 | 79 |
73 // Currently we allow 16 bits for the class id and the overall processor key
size. | 80 // Currently we allow 16 bits for the class id and the overall processor key
size. |
74 static const uint32_t kMetaKeyInvalidMask = ~((uint32_t) SK_MaxU16); | 81 static const uint32_t kMetaKeyInvalidMask = ~((uint32_t) SK_MaxU16); |
75 if ((processorKeySize | classID) & kMetaKeyInvalidMask) { | 82 if ((processorKeySize | classID) & kMetaKeyInvalidMask) { |
76 return false; | 83 return false; |
77 } | 84 } |
78 | 85 |
79 add_texture_key(b, proc, glslCaps); | 86 add_sampler_keys(b, proc, glslCaps); |
80 | 87 |
81 uint32_t* key = b->add32n(2); | 88 uint32_t* key = b->add32n(2); |
82 key[0] = (classID << 16) | SkToU32(processorKeySize); | 89 key[0] = (classID << 16) | SkToU32(processorKeySize); |
83 key[1] = transformKey; | 90 key[1] = transformKey; |
84 return true; | 91 return true; |
85 } | 92 } |
86 | 93 |
87 static bool gen_frag_proc_and_meta_keys(const GrPrimitiveProcessor& primProc, | 94 static bool gen_frag_proc_and_meta_keys(const GrPrimitiveProcessor& primProc, |
88 const GrFragmentProcessor& fp, | 95 const GrFragmentProcessor& fp, |
89 const GrGLSLCaps& glslCaps, | 96 const GrGLSLCaps& glslCaps, |
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174 } else { | 181 } else { |
175 header->fIgnoresCoverage = 0; | 182 header->fIgnoresCoverage = 0; |
176 } | 183 } |
177 | 184 |
178 header->fSnapVerticesToPixelCenters = pipeline.snapVerticesToPixelCenters(); | 185 header->fSnapVerticesToPixelCenters = pipeline.snapVerticesToPixelCenters(); |
179 header->fColorEffectCnt = pipeline.numColorFragmentProcessors(); | 186 header->fColorEffectCnt = pipeline.numColorFragmentProcessors(); |
180 header->fCoverageEffectCnt = pipeline.numCoverageFragmentProcessors(); | 187 header->fCoverageEffectCnt = pipeline.numCoverageFragmentProcessors(); |
181 glDesc->finalize(); | 188 glDesc->finalize(); |
182 return true; | 189 return true; |
183 } | 190 } |
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