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Geoff Lang492a7e42014-11-05 13:27:06 -05001//
2// Copyright (c) 2014 The ANGLE Project Authors. All rights reserved.
3// Use of this source code is governed by a BSD-style license that can be
4// found in the LICENSE file.
5//
6
7// Compiler.cpp: implements the gl::Compiler class.
8
9#include "libANGLE/Compiler.h"
Geoff Lang492a7e42014-11-05 13:27:06 -050010
11#include "common/debug.h"
Jamie Madill9082b982016-04-27 15:21:51 -040012#include "libANGLE/ContextState.h"
Jamie Madill83f349e2015-09-23 09:50:36 -040013#include "libANGLE/renderer/CompilerImpl.h"
Jamie Madill7aea7e02016-05-10 10:39:45 -040014#include "libANGLE/renderer/GLImplFactory.h"
Geoff Lang492a7e42014-11-05 13:27:06 -050015
16namespace gl
17{
18
Jamie Madill83f349e2015-09-23 09:50:36 -040019namespace
Geoff Lang492a7e42014-11-05 13:27:06 -050020{
Jamie Madill83f349e2015-09-23 09:50:36 -040021
Jamie Madillacb4b812016-11-07 13:50:29 -050022// Global count of active shader compiler handles. Needed to know when to call sh::Initialize and
23// sh::Finalize.
Jamie Madill83f349e2015-09-23 09:50:36 -040024size_t activeCompilerHandles = 0;
25
Bryan Bernhart87c182e2016-11-02 11:23:22 -070026ShShaderSpec SelectShaderSpec(GLint majorVersion, GLint minorVersion, bool isWebGL)
Martin Radev1be913c2016-07-11 17:59:16 +030027{
28 if (majorVersion >= 3)
29 {
30 if (minorVersion == 1)
31 {
Bryan Bernhart87c182e2016-11-02 11:23:22 -070032 return isWebGL ? SH_WEBGL3_SPEC : SH_GLES3_1_SPEC;
Martin Radev1be913c2016-07-11 17:59:16 +030033 }
34 else
35 {
Bryan Bernhart87c182e2016-11-02 11:23:22 -070036 return isWebGL ? SH_WEBGL2_SPEC : SH_GLES3_SPEC;
Martin Radev1be913c2016-07-11 17:59:16 +030037 }
38 }
Bryan Bernhart87c182e2016-11-02 11:23:22 -070039 return isWebGL ? SH_WEBGL_SPEC : SH_GLES2_SPEC;
Martin Radev1be913c2016-07-11 17:59:16 +030040}
41
Jamie Madill83f349e2015-09-23 09:50:36 -040042} // anonymous namespace
43
Jamie Madilldfde6ab2016-06-09 07:07:18 -070044Compiler::Compiler(rx::GLImplFactory *implFactory, const ContextState &state)
Jamie Madill83f349e2015-09-23 09:50:36 -040045 : mImplementation(implFactory->createCompiler()),
Bryan Bernhart87c182e2016-11-02 11:23:22 -070046 mSpec(SelectShaderSpec(state.getClientMajorVersion(),
47 state.getClientMinorVersion(),
48 state.getExtensions().webglCompatibility)),
Jamie Madill83f349e2015-09-23 09:50:36 -040049 mOutputType(mImplementation->getTranslatorOutputType()),
50 mResources(),
51 mFragmentCompiler(nullptr),
Martin Radev4c4c8e72016-08-04 12:25:34 +030052 mVertexCompiler(nullptr),
53 mComputeCompiler(nullptr)
Jamie Madill83f349e2015-09-23 09:50:36 -040054{
Martin Radev1be913c2016-07-11 17:59:16 +030055 ASSERT(state.getClientMajorVersion() == 2 || state.getClientMajorVersion() == 3);
Jamie Madill83f349e2015-09-23 09:50:36 -040056
Jamie Madilldfde6ab2016-06-09 07:07:18 -070057 const gl::Caps &caps = state.getCaps();
58 const gl::Extensions &extensions = state.getExtensions();
Jamie Madill83f349e2015-09-23 09:50:36 -040059
Jamie Madillacb4b812016-11-07 13:50:29 -050060 sh::InitBuiltInResources(&mResources);
Jamie Madill29f908b2016-07-19 23:21:01 +000061 mResources.MaxVertexAttribs = caps.maxVertexAttributes;
62 mResources.MaxVertexUniformVectors = caps.maxVertexUniformVectors;
63 mResources.MaxVaryingVectors = caps.maxVaryingVectors;
64 mResources.MaxVertexTextureImageUnits = caps.maxVertexTextureImageUnits;
65 mResources.MaxCombinedTextureImageUnits = caps.maxCombinedTextureImageUnits;
66 mResources.MaxTextureImageUnits = caps.maxTextureImageUnits;
67 mResources.MaxFragmentUniformVectors = caps.maxFragmentUniformVectors;
68 mResources.MaxDrawBuffers = caps.maxDrawBuffers;
69 mResources.OES_standard_derivatives = extensions.standardDerivatives;
70 mResources.EXT_draw_buffers = extensions.drawBuffers;
71 mResources.EXT_shader_texture_lod = extensions.shaderTextureLOD;
Geoff Langb66a9092016-05-16 15:59:14 -040072 mResources.OES_EGL_image_external = extensions.eglImageExternal;
73 mResources.OES_EGL_image_external_essl3 = extensions.eglImageExternalEssl3;
Ian Ewellbda75592016-04-18 17:25:54 -040074 mResources.NV_EGL_stream_consumer_external = extensions.eglStreamConsumerExternal;
Jamie Madill83f349e2015-09-23 09:50:36 -040075 // TODO: use shader precision caps to determine if high precision is supported?
76 mResources.FragmentPrecisionHigh = 1;
77 mResources.EXT_frag_depth = extensions.fragDepth;
78
79 // GLSL ES 3.0 constants
80 mResources.MaxVertexOutputVectors = caps.maxVertexOutputComponents / 4;
81 mResources.MaxFragmentInputVectors = caps.maxFragmentInputComponents / 4;
82 mResources.MinProgramTexelOffset = caps.minProgramTexelOffset;
83 mResources.MaxProgramTexelOffset = caps.maxProgramTexelOffset;
Martin Radeve93d24e2016-07-28 12:06:05 +030084
Olli Etuaho6ca2b652017-02-19 18:05:10 +000085 // GLSL ES 3.1 constants
Martin Radeve93d24e2016-07-28 12:06:05 +030086 mResources.MaxImageUnits = caps.maxImageUnits;
87 mResources.MaxVertexImageUniforms = caps.maxVertexImageUniforms;
88 mResources.MaxFragmentImageUniforms = caps.maxFragmentImageUniforms;
89 mResources.MaxComputeImageUniforms = caps.maxComputeImageUniforms;
90 mResources.MaxCombinedImageUniforms = caps.maxCombinedImageUniforms;
91 mResources.MaxCombinedShaderOutputResources = caps.maxCombinedShaderOutputResources;
Olli Etuaho6ca2b652017-02-19 18:05:10 +000092 mResources.MaxUniformLocations = caps.maxUniformLocations;
Martin Radeve93d24e2016-07-28 12:06:05 +030093
94 for (size_t index = 0u; index < 3u; ++index)
95 {
96 mResources.MaxComputeWorkGroupCount[index] = caps.maxComputeWorkGroupCount[index];
97 mResources.MaxComputeWorkGroupSize[index] = caps.maxComputeWorkGroupSize[index];
98 }
99
100 mResources.MaxComputeUniformComponents = caps.maxComputeUniformComponents;
101 mResources.MaxComputeTextureImageUnits = caps.maxComputeTextureImageUnits;
102
103 mResources.MaxComputeAtomicCounters = caps.maxComputeAtomicCounters;
104 mResources.MaxComputeAtomicCounterBuffers = caps.maxComputeAtomicCounterBuffers;
105
106 mResources.MaxVertexAtomicCounters = caps.maxVertexAtomicCounters;
107 mResources.MaxFragmentAtomicCounters = caps.maxFragmentAtomicCounters;
108 mResources.MaxCombinedAtomicCounters = caps.maxCombinedAtomicCounters;
109 mResources.MaxAtomicCounterBindings = caps.maxAtomicCounterBufferBindings;
110 mResources.MaxVertexAtomicCounterBuffers = caps.maxVertexAtomicCounterBuffers;
111 mResources.MaxFragmentAtomicCounterBuffers = caps.maxFragmentAtomicCounterBuffers;
112 mResources.MaxCombinedAtomicCounterBuffers = caps.maxCombinedAtomicCounterBuffers;
113 mResources.MaxAtomicCounterBufferSize = caps.maxAtomicCounterBufferSize;
Bryan Bernhart58806562017-01-05 13:09:31 -0800114
jchen10af713a22017-04-19 09:10:56 +0800115 mResources.MaxUniformBufferBindings = caps.maxUniformBufferBindings;
116
Bryan Bernhart58806562017-01-05 13:09:31 -0800117 if (state.getClientMajorVersion() == 2 && !extensions.drawBuffers)
118 {
119 mResources.MaxDrawBuffers = 1;
120 }
Geoff Lang492a7e42014-11-05 13:27:06 -0500121}
122
123Compiler::~Compiler()
124{
Jamie Madill83f349e2015-09-23 09:50:36 -0400125 if (mFragmentCompiler)
126 {
Jamie Madillacb4b812016-11-07 13:50:29 -0500127 sh::Destruct(mFragmentCompiler);
Jamie Madill83f349e2015-09-23 09:50:36 -0400128 mFragmentCompiler = nullptr;
129
130 ASSERT(activeCompilerHandles > 0);
131 activeCompilerHandles--;
132 }
133
134 if (mVertexCompiler)
135 {
Jamie Madillacb4b812016-11-07 13:50:29 -0500136 sh::Destruct(mVertexCompiler);
Jamie Madill83f349e2015-09-23 09:50:36 -0400137 mVertexCompiler = nullptr;
138
139 ASSERT(activeCompilerHandles > 0);
140 activeCompilerHandles--;
141 }
142
Martin Radev4c4c8e72016-08-04 12:25:34 +0300143 if (mComputeCompiler)
144 {
Jamie Madillacb4b812016-11-07 13:50:29 -0500145 sh::Destruct(mComputeCompiler);
Martin Radev4c4c8e72016-08-04 12:25:34 +0300146 mComputeCompiler = nullptr;
147
148 ASSERT(activeCompilerHandles > 0);
149 activeCompilerHandles--;
150 }
151
Jamie Madill83f349e2015-09-23 09:50:36 -0400152 if (activeCompilerHandles == 0)
153 {
Jamie Madillacb4b812016-11-07 13:50:29 -0500154 sh::Finalize();
Jamie Madill83f349e2015-09-23 09:50:36 -0400155 }
156
157 mImplementation->release();
Geoff Lang492a7e42014-11-05 13:27:06 -0500158}
159
Jamie Madill83f349e2015-09-23 09:50:36 -0400160ShHandle Compiler::getCompilerHandle(GLenum type)
Geoff Lang492a7e42014-11-05 13:27:06 -0500161{
Jamie Madill83f349e2015-09-23 09:50:36 -0400162 ShHandle *compiler = nullptr;
163 switch (type)
164 {
165 case GL_VERTEX_SHADER:
166 compiler = &mVertexCompiler;
167 break;
168
169 case GL_FRAGMENT_SHADER:
170 compiler = &mFragmentCompiler;
171 break;
Martin Radev4c4c8e72016-08-04 12:25:34 +0300172 case GL_COMPUTE_SHADER:
173 compiler = &mComputeCompiler;
174 break;
Jamie Madill83f349e2015-09-23 09:50:36 -0400175 default:
176 UNREACHABLE();
177 return nullptr;
178 }
179
180 if (!(*compiler))
181 {
182 if (activeCompilerHandles == 0)
183 {
Jamie Madillacb4b812016-11-07 13:50:29 -0500184 sh::Initialize();
Jamie Madill83f349e2015-09-23 09:50:36 -0400185 }
186
Jamie Madillacb4b812016-11-07 13:50:29 -0500187 *compiler = sh::ConstructCompiler(type, mSpec, mOutputType, &mResources);
Jamie Madille794cd82017-01-13 17:29:51 -0500188 ASSERT(*compiler);
Jamie Madill83f349e2015-09-23 09:50:36 -0400189 activeCompilerHandles++;
190 }
191
192 return *compiler;
Geoff Lang492a7e42014-11-05 13:27:06 -0500193}
194
Jamie Madill32447362017-06-28 14:53:52 -0400195const std::string &Compiler::getBuiltinResourcesString(GLenum type)
196{
197 return sh::GetBuiltInResourcesString(getCompilerHandle(type));
198}
199
Jamie Madill83f349e2015-09-23 09:50:36 -0400200} // namespace gl