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1 /* | |
2 * Copyright 2014 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 GrGLNvprProgramBuilder_DEFINED | |
9 #define GrGLNvprProgramBuilder_DEFINED | |
10 | |
11 #include "GrGLProgramBuilder.h" | |
12 | |
13 class GrGLNvprProgramBuilder : public GrGLProgramBuilder { | |
14 public: | |
15 GrGLNvprProgramBuilder(GrGpuGL*, const GrOptDrawState&, const GrGLProgramDes
c&); | |
16 | |
17 /* | |
18 * The separable varying info must be passed to GrGLProgram so this must | |
19 * be part of the public interface | |
20 */ | |
21 struct SeparableVaryingInfo { | |
22 GrGLShaderVar fVariable; | |
23 GrGLint fLocation; | |
24 }; | |
25 | |
26 typedef GrTAllocator<SeparableVaryingInfo> SeparableVaryingInfoArray; | |
27 | |
28 virtual GrGLProgram* createProgram(GrGLuint programID); | |
29 | |
30 private: | |
31 virtual void emitTransforms(const GrProcessorStage&, | |
32 GrGLProcessor::TransformedCoordsArray* outCoords
, | |
33 GrGLInstalledProcessors*) SK_OVERRIDE; | |
34 | |
35 typedef GrGLInstalledProcessors::ShaderVarHandle ShaderVarHandle; | |
36 | |
37 /** | |
38 * Add a separable varying input variable to the current program. | |
39 * A separable varying (fragment shader input) is a varying that can be used
also when vertex | |
40 * shaders are not used. With a vertex shader, the operation is same as with
other | |
41 * varyings. Without a vertex shader, such as with NV_path_rendering, GL API
s are used to | |
42 * populate the variable. The APIs can refer to the variable through the ret
urned handle. | |
43 */ | |
44 ShaderVarHandle addSeparableVarying(GrSLType type, | |
45 const char* name, | |
46 const char** vsOutName, | |
47 const char** fsInName); | |
48 | |
49 void resolveSeparableVaryings(GrGLuint programId); | |
50 | |
51 SeparableVaryingInfoArray fSeparableVaryingInfos; | |
52 | |
53 typedef GrGLProgramBuilder INHERITED; | |
54 }; | |
55 | |
56 #endif | |
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