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| 1 /* | |
| 2 * Copyright 2013 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 GrGLProgramDesc_DEFINED | |
| 9 #define GrGLProgramDesc_DEFINED | |
| 10 | |
| 11 #include "GrColor.h" | |
| 12 #include "GrProgramDesc.h" | |
| 13 #include "GrGpu.h" | |
| 14 #include "GrTypesPriv.h" | |
| 15 | |
| 16 class GrGLGpu; | |
| 17 class GrGLProgramDescBuilder; | |
| 18 | |
| 19 class GrGLProgramDesc : public GrProgramDesc { | |
| 20 friend class GrGLProgramDescBuilder; | |
| 21 }; | |
| 22 | |
| 23 /** | |
| 24 * This class can be used to build a GrProgramDesc. It also provides helpers fo
r accessing | |
| 25 * GL specific info in the header. | |
| 26 */ | |
| 27 class GrGLProgramDescBuilder { | |
| 28 public: | |
| 29 typedef GrProgramDesc::KeyHeader KeyHeader; | |
| 30 // The key, stored in fKey, is composed of five parts(first 2 are defined in
the key itself): | |
| 31 // 1. uint32_t for total key length. | |
| 32 // 2. uint32_t for a checksum. | |
| 33 // 3. Header struct defined above. | |
| 34 // 4. Backend-specific information including per-processor keys and their ke
y lengths. | |
| 35 // Each processor's key is a variable length array of uint32_t. | |
| 36 enum { | |
| 37 // Part 3. | |
| 38 kHeaderOffset = GrGLProgramDesc::kHeaderOffset, | |
| 39 kHeaderSize = SkAlign4(sizeof(KeyHeader)), | |
| 40 // Part 4. | |
| 41 // This is the offset into the backenend specific part of the key, which
includes | |
| 42 // per-processor keys. | |
| 43 kProcessorKeysOffset = kHeaderOffset + kHeaderSize, | |
| 44 }; | |
| 45 | |
| 46 /** | |
| 47 * Builds a GL specific program descriptor | |
| 48 * | |
| 49 * @param GrPrimitiveProcessor The geometry | |
| 50 * @param GrPipeline The optimized drawstate. The descriptor will represen
t a program | |
| 51 * which this optstate can use to draw with. The opt
state contains | |
| 52 * general draw information, as well as the specific
color, geometry, | |
| 53 * and coverage stages which will be used to generate
the GL Program for | |
| 54 * this optstate. | |
| 55 * @param GrGLSLCaps Capabilities of the GLSL backend. | |
| 56 * @param GrProgramDesc The built and finalized descriptor | |
| 57 **/ | |
| 58 static bool Build(GrProgramDesc*, | |
| 59 const GrPrimitiveProcessor&, | |
| 60 const GrPipeline&, | |
| 61 const GrGLSLCaps&); | |
| 62 }; | |
| 63 | |
| 64 #endif | |
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Chromium Code Reviews
Issue 2184413002:
Merge ProgramDesc's for GL and Vulkan (Closed)
Base URL: https://skia.googlesource.com/skia.git@minorPerf