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| 1 /* | |
| 2 * Copyright 2016 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 #ifndef GrGLSLProgramDesc_DEFINED | |
| 9 #define GrGLSLProgramDesc_DEFINED | |
| 10 | |
| 11 #include "GrColor.h" | |
| 12 #include "GrProgramDesc.h" | |
| 13 #include "GrGpu.h" | |
| 14 #include "GrTypesPriv.h" | |
| 15 | |
| 16 class GrGLSLProgramDescBuilder; | |
| 17 | |
| 18 class GrGLSLProgramDesc : public GrProgramDesc { | |
| 19 friend class GrGLSLProgramDescBuilder; | |
| 20 }; | |
| 21 | |
| 22 /** | |
| 23 * This class can be used to build a GrProgramDesc. It also provides helpers for
accessing | |
| 24 * GL specific info in the header. | |
| 25 */ | |
| 26 class GrGLSLProgramDescBuilder { | |
| 27 public: | |
| 28 typedef GrProgramDesc::KeyHeader KeyHeader; | |
| 29 // The key, stored in fKey, is composed of five parts(first 2 are defined in
the key itself): | |
| 30 // 1. uint32_t for total key length. | |
| 31 // 2. uint32_t for a checksum. | |
| 32 // 3. Header struct defined above. | |
| 33 // 4. Backend-specific information including per-processor keys and their ke
y lengths. | |
| 34 // Each processor's key is a variable length array of uint32_t. | |
| 35 enum { | |
| 36 // Part 3. | |
| 37 kHeaderOffset = GrGLSLProgramDesc::kHeaderOffset, | |
| 38 kHeaderSize = SkAlign4(sizeof(KeyHeader)), | |
| 39 // Part 4. | |
| 40 // This is the offset into the backenend specific part of the key, which
includes | |
| 41 // per-processor keys. | |
| 42 kProcessorKeysOffset = kHeaderOffset + kHeaderSize, | |
| 43 }; | |
| 44 | |
| 45 /** | |
| 46 * Builds a GLSL specific program descriptor | |
| 47 * | |
| 48 * @param GrPrimitiveProcessor The geometry | |
| 49 * @param GrPipeline The optimized drawstate. The descriptor will represent
a program | |
| 50 * which this optstate can use to draw with. The opts
tate contains | |
| 51 * general draw information, as well as the specific c
olor, geometry, | |
| 52 * and coverage stages which will be used to generate
the GL Program for | |
| 53 * this optstate. | |
| 54 * @param GrGLSLCaps Capabilities of the GLSL backend. | |
| 55 * @param GrProgramDesc The built and finalized descriptor | |
| 56 **/ | |
| 57 static bool Build(GrProgramDesc*, | |
| 58 const GrPrimitiveProcessor&, | |
| 59 const GrPipeline&, | |
| 60 const GrGLSLCaps&); | |
| 61 }; | |
| 62 | |
| 63 #endif | |
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Chromium Code Reviews
Issue 2318523006:
Merge GrGLSLProgramDesc into GrProgramDesc (Closed)
Base URL: https://skia.googlesource.com/skia.git@master