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1 /* | 1 /* |
2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 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 | 7 |
8 #ifndef GrGLSL_DEFINED | 8 #ifndef GrGLSL_DEFINED |
9 #define GrGLSL_DEFINED | 9 #define GrGLSL_DEFINED |
10 | 10 |
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51 }; | 51 }; |
52 | 52 |
53 bool GrGLSLSupportsNamedFragmentShaderOutputs(GrGLSLGeneration); | 53 bool GrGLSLSupportsNamedFragmentShaderOutputs(GrGLSLGeneration); |
54 | 54 |
55 /** | 55 /** |
56 * Gets the name of the function that should be used to sample a 2D texture. Coo
rd type is used | 56 * Gets the name of the function that should be used to sample a 2D texture. Coo
rd type is used |
57 * to indicate whether the texture is sampled using projective textured (kVec3f)
or not (kVec2f). | 57 * to indicate whether the texture is sampled using projective textured (kVec3f)
or not (kVec2f). |
58 */ | 58 */ |
59 inline const char* GrGLSLTexture2DFunctionName(GrSLType coordType, GrSLType samp
lerType, | 59 inline const char* GrGLSLTexture2DFunctionName(GrSLType coordType, GrSLType samp
lerType, |
60 GrGLSLGeneration glslGen) { | 60 GrGLSLGeneration glslGen) { |
61 SkASSERT(GrSLTypeIs2DTextureType(samplerType)); | 61 SkASSERT(GrSLTypeIs2DCombinedSamplerType(samplerType)); |
62 SkASSERT(kVec2f_GrSLType == coordType || kVec3f_GrSLType == coordType); | 62 SkASSERT(kVec2f_GrSLType == coordType || kVec3f_GrSLType == coordType); |
63 // GL_TEXTURE_RECTANGLE_ARB is written against OpenGL 2.0/GLSL 1.10. At that
time there were | 63 // GL_TEXTURE_RECTANGLE_ARB is written against OpenGL 2.0/GLSL 1.10. At that
time there were |
64 // separate texture*() functions. In OpenGL 3.0/GLSL 1.30 the different text
ure*() functions | 64 // separate texture*() functions. In OpenGL 3.0/GLSL 1.30 the different text
ure*() functions |
65 // were deprecated in favor or the unified texture() function. RECTANGLE tex
tures became | 65 // were deprecated in favor or the unified texture() function. RECTANGLE tex
tures became |
66 // standard in OpenGL 3.2/GLSL 1.50 and use texture(). It isn't completely c
lear what function | 66 // standard in OpenGL 3.2/GLSL 1.50 and use texture(). It isn't completely c
lear what function |
67 // should be used for RECTANGLE textures in GLSL versions >= 1.30 && < 1.50.
We're going with | 67 // should be used for RECTANGLE textures in GLSL versions >= 1.30 && < 1.50.
We're going with |
68 // using texture(). | 68 // using texture(). |
69 if (glslGen >= k130_GrGLSLGeneration) { | 69 if (glslGen >= k130_GrGLSLGeneration) { |
70 return (kVec2f_GrSLType == coordType) ? "texture" : "textureProj"; | 70 return (kVec2f_GrSLType == coordType) ? "texture" : "textureProj"; |
71 } | 71 } |
72 if (kVec2f_GrSLType == coordType) { | 72 if (kVec2f_GrSLType == coordType) { |
73 return (samplerType == kSampler2DRect_GrSLType) ? "texture2DRect" : "tex
ture2D"; | 73 return (samplerType == kTexture2DRectSampler_GrSLType) ? "texture2DRect"
: "texture2D"; |
74 } else { | 74 } else { |
75 return (samplerType == kSampler2DRect_GrSLType) ? "texture2DRectProj" :
"texture2DProj"; | 75 return (samplerType == kTexture2DRectSampler_GrSLType) ? "texture2DRectP
roj" |
| 76 : "texture2DProj"
; |
76 } | 77 } |
77 } | 78 } |
78 | 79 |
79 /** | 80 /** |
80 * Adds a line of GLSL code to declare the default precision for float types. | 81 * Adds a line of GLSL code to declare the default precision for float types. |
81 */ | 82 */ |
82 void GrGLSLAppendDefaultFloatPrecisionDeclaration(GrSLPrecision, | 83 void GrGLSLAppendDefaultFloatPrecisionDeclaration(GrSLPrecision, |
83 const GrGLSLCaps& glslCaps, | 84 const GrGLSLCaps& glslCaps, |
84 SkString* out); | 85 SkString* out); |
85 | 86 |
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114 case kVec3f_GrSLType: | 115 case kVec3f_GrSLType: |
115 return "vec3"; | 116 return "vec3"; |
116 case kVec4f_GrSLType: | 117 case kVec4f_GrSLType: |
117 return "vec4"; | 118 return "vec4"; |
118 case kMat22f_GrSLType: | 119 case kMat22f_GrSLType: |
119 return "mat2"; | 120 return "mat2"; |
120 case kMat33f_GrSLType: | 121 case kMat33f_GrSLType: |
121 return "mat3"; | 122 return "mat3"; |
122 case kMat44f_GrSLType: | 123 case kMat44f_GrSLType: |
123 return "mat4"; | 124 return "mat4"; |
124 case kSampler2D_GrSLType: | 125 case kTexture2DSampler_GrSLType: |
125 return "sampler2D"; | 126 return "sampler2D"; |
126 case kSamplerExternal_GrSLType: | 127 case kTextureExternalSampler_GrSLType: |
127 return "samplerExternalOES"; | 128 return "samplerExternalOES"; |
128 case kSampler2DRect_GrSLType: | 129 case kTexture2DRectSampler_GrSLType: |
129 return "sampler2DRect"; | 130 return "sampler2DRect"; |
130 case kSamplerBuffer_GrSLType: | 131 case kTextureBufferSampler_GrSLType: |
131 return "samplerBuffer"; | 132 return "samplerBuffer"; |
132 case kBool_GrSLType: | 133 case kBool_GrSLType: |
133 return "bool"; | 134 return "bool"; |
134 case kInt_GrSLType: | 135 case kInt_GrSLType: |
135 return "int"; | 136 return "int"; |
136 case kUint_GrSLType: | 137 case kUint_GrSLType: |
137 return "uint"; | 138 return "uint"; |
| 139 case kTexture2D_GrSLType: |
| 140 return "texture2D"; |
| 141 case kSampler_GrSLType: |
| 142 return "sampler"; |
138 default: | 143 default: |
139 SkFAIL("Unknown shader var type."); | 144 SkFAIL("Unknown shader var type."); |
140 return ""; // suppress warning | 145 return ""; // suppress warning |
141 } | 146 } |
142 } | 147 } |
143 | 148 |
144 /** A generic base-class representing a GLSL expression. | 149 /** A generic base-class representing a GLSL expression. |
145 * The instance can be a variable name, expression or vecN(0) or vecN(1). Does s
imple constant | 150 * The instance can be a variable name, expression or vecN(0) or vecN(1). Does s
imple constant |
146 * folding with help of 1 and 0. | 151 * folding with help of 1 and 0. |
147 * | 152 * |
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376 | 381 |
377 /** | 382 /** |
378 * Does an inplace mul, *=, of vec4VarName by mulFactor. | 383 * Does an inplace mul, *=, of vec4VarName by mulFactor. |
379 * A semicolon is added after the assignment. | 384 * A semicolon is added after the assignment. |
380 */ | 385 */ |
381 void GrGLSLMulVarBy4f(SkString* outAppend, const char* vec4VarName, const GrGLSL
Expr4& mulFactor); | 386 void GrGLSLMulVarBy4f(SkString* outAppend, const char* vec4VarName, const GrGLSL
Expr4& mulFactor); |
382 | 387 |
383 #include "GrGLSL_impl.h" | 388 #include "GrGLSL_impl.h" |
384 | 389 |
385 #endif | 390 #endif |
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