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| 1 | |
| 2 /* | |
| 3 * Copyright 2011 Google Inc. | |
| 4 * | |
| 5 * Use of this source code is governed by a BSD-style license that can be | |
| 6 * found in the LICENSE file. | |
| 7 */ | |
| 8 | |
| 9 #include <GL/osmesa.h> | |
| 10 | |
| 11 #include "gl/mesa/GLContext_mesa.h" | |
| 12 #include "gl/GrGLDefines.h" | |
| 13 | |
| 14 #include "gl/GrGLAssembleInterface.h" | |
| 15 #include "gl/GrGLUtil.h" | |
| 16 #include "osmesa_wrapper.h" | |
| 17 | |
| 18 namespace { | |
| 19 | |
| 20 static GrGLFuncPtr osmesa_get(void* ctx, const char name[]) { | |
| 21 SkASSERT(nullptr == ctx); | |
| 22 SkASSERT(OSMesaGetCurrentContext()); | |
| 23 return OSMesaGetProcAddress(name); | |
| 24 } | |
| 25 | |
| 26 static const GrGLInterface* create_mesa_interface() { | |
| 27 if (nullptr == OSMesaGetCurrentContext()) { | |
| 28 return nullptr; | |
| 29 } | |
| 30 return GrGLAssembleInterface(nullptr, osmesa_get); | |
| 31 } | |
| 32 | |
| 33 static const GrGLint gBOGUS_SIZE = 16; | |
| 34 | |
| 35 class MesaGLContext : public sk_gpu_test::GLContext { | |
| 36 private: | |
| 37 typedef intptr_t Context; | |
| 38 | |
| 39 public: | |
| 40 MesaGLContext(); | |
| 41 ~MesaGLContext() override; | |
| 42 | |
| 43 private: | |
| 44 void destroyGLContext(); | |
| 45 | |
| 46 void onPlatformMakeCurrent() const override; | |
| 47 | |
| 48 void onPlatformSwapBuffers() const override; | |
| 49 | |
| 50 GrGLFuncPtr onPlatformGetProcAddress(const char *) const override; | |
| 51 | |
| 52 Context fContext; | |
| 53 GrGLubyte *fImage; | |
| 54 }; | |
| 55 | |
| 56 MesaGLContext::MesaGLContext() : fContext(static_cast<Context>(0)), fImage(nullp
tr) { | |
| 57 GR_STATIC_ASSERT(sizeof(Context) == sizeof(OSMesaContext)); | |
| 58 | |
| 59 /* Create an RGBA-mode context */ | |
| 60 #if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305 | |
| 61 /* specify Z, stencil, accum sizes */ | |
| 62 fContext = (Context)OSMesaCreateContextExt(OSMESA_BGRA, 0, 0, 0, nullptr); | |
| 63 #else | |
| 64 fContext = (Context) OSMesaCreateContext(OSMESA_BGRA, nullptr); | |
| 65 #endif | |
| 66 if (!fContext) { | |
| 67 SkDebugf("OSMesaCreateContext failed!\n"); | |
| 68 this->destroyGLContext(); | |
| 69 return; | |
| 70 } | |
| 71 // Allocate the image buffer | |
| 72 fImage = (GrGLubyte *) sk_malloc_throw(gBOGUS_SIZE * gBOGUS_SIZE * | |
| 73 4 * sizeof(GrGLubyte)); | |
| 74 if (!fImage) { | |
| 75 SkDebugf("Alloc image buffer failed!\n"); | |
| 76 this->destroyGLContext(); | |
| 77 return; | |
| 78 } | |
| 79 | |
| 80 // Bind the buffer to the context and make it current | |
| 81 if (!OSMesaMakeCurrent((OSMesaContext) fContext, | |
| 82 fImage, | |
| 83 GR_GL_UNSIGNED_BYTE, | |
| 84 gBOGUS_SIZE, | |
| 85 gBOGUS_SIZE)) { | |
| 86 SkDebugf("OSMesaMakeCurrent failed!\n"); | |
| 87 this->destroyGLContext(); | |
| 88 return; | |
| 89 } | |
| 90 | |
| 91 SkAutoTUnref<const GrGLInterface> gl(create_mesa_interface()); | |
| 92 if (nullptr == gl.get()) { | |
| 93 SkDebugf("Could not create GL interface!\n"); | |
| 94 this->destroyGLContext(); | |
| 95 return; | |
| 96 } | |
| 97 | |
| 98 if (!gl->validate()) { | |
| 99 SkDebugf("Could not validate GL interface!\n"); | |
| 100 this->destroyGLContext(); | |
| 101 return; | |
| 102 } | |
| 103 | |
| 104 this->init(gl.release()); | |
| 105 } | |
| 106 | |
| 107 MesaGLContext::~MesaGLContext() { | |
| 108 this->teardown(); | |
| 109 this->destroyGLContext(); | |
| 110 } | |
| 111 | |
| 112 void MesaGLContext::destroyGLContext() { | |
| 113 if (fImage) { | |
| 114 sk_free(fImage); | |
| 115 fImage = nullptr; | |
| 116 } | |
| 117 | |
| 118 if (fContext) { | |
| 119 OSMesaDestroyContext((OSMesaContext) fContext); | |
| 120 fContext = static_cast<Context>(0); | |
| 121 } | |
| 122 } | |
| 123 | |
| 124 | |
| 125 void MesaGLContext::onPlatformMakeCurrent() const { | |
| 126 if (fContext) { | |
| 127 if (!OSMesaMakeCurrent((OSMesaContext) fContext, fImage, | |
| 128 GR_GL_UNSIGNED_BYTE, gBOGUS_SIZE, gBOGUS_SIZE)) { | |
| 129 SkDebugf("Could not make MESA context current."); | |
| 130 } | |
| 131 } | |
| 132 } | |
| 133 | |
| 134 void MesaGLContext::onPlatformSwapBuffers() const { } | |
| 135 | |
| 136 GrGLFuncPtr MesaGLContext::onPlatformGetProcAddress(const char *procName) const
{ | |
| 137 return OSMesaGetProcAddress(procName); | |
| 138 } | |
| 139 } // anonymous namespace | |
| 140 | |
| 141 | |
| 142 namespace sk_gpu_test { | |
| 143 GLContext *CreateMesaGLContext() { | |
| 144 MesaGLContext *ctx = new MesaGLContext; | |
| 145 if (!ctx->isValid()) { | |
| 146 delete ctx; | |
| 147 return nullptr; | |
| 148 } | |
| 149 return ctx; | |
| 150 } | |
| 151 } // sk_gpu_test | |
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Chromium Code Reviews
Issue 1849463002:
rename sk_gpu_test::GLContext to sk_gpu_test::GLTestContext (Closed)
Base URL: https://chromium.googlesource.com/skia.git@move