| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| #include "gl/GrGLInterface.h" |
| #include "GrGLDefines.h" |
| #include "SkTDArray.h" |
| #include "GrGLNoOpInterface.h" |
| #include "SkTLS.h" |
| |
| class BufferObj { |
| public: |
| SK_DECLARE_INST_COUNT_ROOT(BufferObj); |
| |
| BufferObj(GrGLuint id) : fID(id), fDataPtr(NULL), fSize(0), fMapped(false) { |
| } |
| ~BufferObj() { SkDELETE_ARRAY(fDataPtr); } |
| |
| void allocate(GrGLsizeiptr size, const GrGLchar* dataPtr) { |
| if (NULL != fDataPtr) { |
| SkASSERT(0 != fSize); |
| SkDELETE_ARRAY(fDataPtr); |
| } |
| |
| fSize = size; |
| fDataPtr = SkNEW_ARRAY(char, size); |
| } |
| |
| GrGLuint id() const { return fID; } |
| GrGLchar* dataPtr() { return fDataPtr; } |
| GrGLsizeiptr size() const { return fSize; } |
| |
| void setMapped(bool mapped) { fMapped = mapped; } |
| bool mapped() const { return fMapped; } |
| |
| private: |
| GrGLuint fID; |
| GrGLchar* fDataPtr; |
| GrGLsizeiptr fSize; // size in bytes |
| bool fMapped; |
| }; |
| |
| // This class maintains a sparsely populated array of buffer pointers. |
| class BufferManager { |
| public: |
| SK_DECLARE_INST_COUNT_ROOT(BufferManager); |
| |
| BufferManager() : fFreeListHead(kFreeListEnd) {} |
| |
| ~BufferManager() { |
| // NULL out the entries that are really free list links rather than ptrs before deleting. |
| intptr_t curr = fFreeListHead; |
| while (kFreeListEnd != curr) { |
| intptr_t next = reinterpret_cast<intptr_t>(fBuffers[SkToS32(curr)]); |
| fBuffers[SkToS32(curr)] = NULL; |
| curr = next; |
| } |
| |
| fBuffers.deleteAll(); |
| } |
| |
| BufferObj* lookUp(GrGLuint id) { |
| BufferObj* buffer = fBuffers[id]; |
| SkASSERT(NULL != buffer && buffer->id() == id); |
| return buffer; |
| } |
| |
| BufferObj* create() { |
| GrGLuint id; |
| BufferObj* buffer; |
| |
| if (kFreeListEnd == fFreeListHead) { |
| // no free slots - create a new one |
| id = fBuffers.count(); |
| buffer = SkNEW_ARGS(BufferObj, (id)); |
| *fBuffers.append() = buffer; |
| } else { |
| // grab the head of the free list and advance the head to the next free slot. |
| id = static_cast<GrGLuint>(fFreeListHead); |
| fFreeListHead = reinterpret_cast<intptr_t>(fBuffers[id]); |
| |
| buffer = SkNEW_ARGS(BufferObj, (id)); |
| fBuffers[id] = buffer; |
| } |
| |
| return buffer; |
| } |
| |
| void free(BufferObj* buffer) { |
| SkASSERT(fBuffers.count() > 0); |
| |
| GrGLuint id = buffer->id(); |
| SkDELETE(buffer); |
| |
| fBuffers[id] = reinterpret_cast<BufferObj*>(fFreeListHead); |
| fFreeListHead = id; |
| } |
| |
| private: |
| static const intptr_t kFreeListEnd = -1; |
| // Index of the first entry of fBuffers in the free list. Free slots in fBuffers are indices to |
| // the next free slot. The last free slot has a value of kFreeListEnd. |
| intptr_t fFreeListHead; |
| SkTDArray<BufferObj*> fBuffers; |
| }; |
| |
| /** |
| * The global-to-thread state object for the null interface. All null interfaces on the |
| * same thread currently share one of these. This means two null contexts on the same thread |
| * can interfere with each other. It may make sense to more integrate this into SkNullGLContext |
| * and use it's makeCurrent mechanism. |
| */ |
| struct ThreadContext { |
| public: |
| SK_DECLARE_INST_COUNT_ROOT(ThreadContext); |
| |
| BufferManager fBufferManager; |
| GrGLuint fCurrArrayBuffer; |
| GrGLuint fCurrElementArrayBuffer; |
| GrGLuint fCurrProgramID; |
| GrGLuint fCurrShaderID; |
| |
| static ThreadContext* Get() { |
| return reinterpret_cast<ThreadContext*>(SkTLS::Get(Create, Delete)); |
| } |
| |
| ThreadContext() |
| : fCurrArrayBuffer(0) |
| , fCurrElementArrayBuffer(0) |
| , fCurrProgramID(0) |
| , fCurrShaderID(0) {} |
| |
| private: |
| static void* Create() { return SkNEW(ThreadContext ); } |
| static void Delete(void* context) { SkDELETE(reinterpret_cast<ThreadContext *>(context)); } |
| }; |
| |
| // Functions not declared in GrGLBogusInterface.h (not common with the Debug GL interface). |
| |
| namespace { // added to suppress 'no previous prototype' warning |
| |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLActiveTexture(GrGLenum texture) {} |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLAttachShader(GrGLuint program, GrGLuint shader) {} |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLBeginQuery(GrGLenum target, GrGLuint id) {} |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindAttribLocation(GrGLuint program, GrGLuint index, const char* name) {} |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindTexture(GrGLenum target, GrGLuint texture) {} |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindVertexArray(GrGLuint id) {} |
| |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLGenBuffers(GrGLsizei n, GrGLuint* ids) { |
| ThreadContext* ctx = ThreadContext::Get(); |
| for (int i = 0; i < n; ++i) { |
| BufferObj* buffer = ctx->fBufferManager.create(); |
| ids[i] = buffer->id(); |
| } |
| } |
| |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLGenerateMipmap(GrGLenum target) {} |
| |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLBufferData(GrGLenum target, |
| GrGLsizeiptr size, |
| const GrGLvoid* data, |
| GrGLenum usage) { |
| ThreadContext* ctx = ThreadContext::Get(); |
| GrGLuint id = 0; |
| |
| switch (target) { |
| case GR_GL_ARRAY_BUFFER: |
| id = ctx->fCurrArrayBuffer; |
| break; |
| case GR_GL_ELEMENT_ARRAY_BUFFER: |
| id = ctx->fCurrElementArrayBuffer; |
| break; |
| default: |
| SkFAIL("Unexpected target to nullGLBufferData"); |
| break; |
| } |
| |
| if (id > 0) { |
| BufferObj* buffer = ctx->fBufferManager.lookUp(id); |
| buffer->allocate(size, (const GrGLchar*) data); |
| } |
| } |
| |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLPixelStorei(GrGLenum pname, GrGLint param) {} |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLReadPixels(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height, GrGLenum format, GrGLenum type, GrGLvoid* pixels) {} |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLUseProgram(GrGLuint program) {} |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLViewport(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height) {} |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindFramebuffer(GrGLenum target, GrGLuint framebuffer) {} |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindRenderbuffer(GrGLenum target, GrGLuint renderbuffer) {} |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLDeleteFramebuffers(GrGLsizei n, const GrGLuint *framebuffers) {} |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLDeleteRenderbuffers(GrGLsizei n, const GrGLuint *renderbuffers) {} |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLFramebufferRenderbuffer(GrGLenum target, GrGLenum attachment, GrGLenum renderbuffertarget, GrGLuint renderbuffer) {} |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLFramebufferTexture2D(GrGLenum target, GrGLenum attachment, GrGLenum textarget, GrGLuint texture, GrGLint level) {} |
| |
| GrGLuint GR_GL_FUNCTION_TYPE nullGLCreateProgram() { |
| return ++ThreadContext::Get()->fCurrProgramID; |
| } |
| |
| GrGLuint GR_GL_FUNCTION_TYPE nullGLCreateShader(GrGLenum type) { |
| return ++ThreadContext::Get()->fCurrShaderID; |
| } |
| |
| // same delete used for shaders and programs |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLDelete(GrGLuint program) { |
| } |
| |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindBuffer(GrGLenum target, GrGLuint buffer) { |
| ThreadContext* ctx = ThreadContext::Get(); |
| switch (target) { |
| case GR_GL_ARRAY_BUFFER: |
| ctx->fCurrArrayBuffer = buffer; |
| break; |
| case GR_GL_ELEMENT_ARRAY_BUFFER: |
| ctx->fCurrElementArrayBuffer = buffer; |
| break; |
| } |
| } |
| |
| // deleting a bound buffer has the side effect of binding 0 |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLDeleteBuffers(GrGLsizei n, const GrGLuint* ids) { |
| ThreadContext* ctx = ThreadContext::Get(); |
| for (int i = 0; i < n; ++i) { |
| if (ids[i] == ctx->fCurrArrayBuffer) { |
| ctx->fCurrArrayBuffer = 0; |
| } |
| if (ids[i] == ctx->fCurrElementArrayBuffer) { |
| ctx->fCurrElementArrayBuffer = 0; |
| } |
| |
| BufferObj* buffer = ctx->fBufferManager.lookUp(ids[i]); |
| ctx->fBufferManager.free(buffer); |
| } |
| } |
| |
| GrGLvoid* GR_GL_FUNCTION_TYPE nullGLMapBufferRange(GrGLenum target, GrGLintptr offset, |
| GrGLsizeiptr length, GrGLbitfield access) { |
| ThreadContext* ctx = ThreadContext::Get(); |
| GrGLuint id = 0; |
| switch (target) { |
| case GR_GL_ARRAY_BUFFER: |
| id = ctx->fCurrArrayBuffer; |
| break; |
| case GR_GL_ELEMENT_ARRAY_BUFFER: |
| id = ctx->fCurrElementArrayBuffer; |
| break; |
| } |
| |
| if (id > 0) { |
| // We just ignore the offset and length here. |
| BufferObj* buffer = ctx->fBufferManager.lookUp(id); |
| SkASSERT(!buffer->mapped()); |
| buffer->setMapped(true); |
| return buffer->dataPtr(); |
| } |
| return NULL; |
| } |
| |
| GrGLvoid* GR_GL_FUNCTION_TYPE nullGLMapBuffer(GrGLenum target, GrGLenum access) { |
| ThreadContext* ctx = ThreadContext::Get(); |
| GrGLuint id = 0; |
| switch (target) { |
| case GR_GL_ARRAY_BUFFER: |
| id = ctx->fCurrArrayBuffer; |
| break; |
| case GR_GL_ELEMENT_ARRAY_BUFFER: |
| id = ctx->fCurrElementArrayBuffer; |
| break; |
| } |
| |
| if (id > 0) { |
| BufferObj* buffer = ctx->fBufferManager.lookUp(id); |
| SkASSERT(!buffer->mapped()); |
| buffer->setMapped(true); |
| return buffer->dataPtr(); |
| } |
| |
| SkASSERT(false); |
| return NULL; // no buffer bound to target |
| } |
| |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLFlushMappedBufferRange(GrGLenum target, |
| GrGLintptr offset, |
| GrGLsizeiptr length) {} |
| |
| |
| GrGLboolean GR_GL_FUNCTION_TYPE nullGLUnmapBuffer(GrGLenum target) { |
| ThreadContext* ctx = ThreadContext::Get(); |
| GrGLuint id = 0; |
| switch (target) { |
| case GR_GL_ARRAY_BUFFER: |
| id = ctx->fCurrArrayBuffer; |
| break; |
| case GR_GL_ELEMENT_ARRAY_BUFFER: |
| id = ctx->fCurrElementArrayBuffer; |
| break; |
| } |
| if (id > 0) { |
| BufferObj* buffer = ctx->fBufferManager.lookUp(id); |
| SkASSERT(buffer->mapped()); |
| buffer->setMapped(false); |
| return GR_GL_TRUE; |
| } |
| |
| GrAlwaysAssert(false); |
| return GR_GL_FALSE; // GR_GL_INVALID_OPERATION; |
| } |
| |
| GrGLvoid GR_GL_FUNCTION_TYPE nullGLGetBufferParameteriv(GrGLenum target, GrGLenum pname, GrGLint* params) { |
| ThreadContext* ctx = ThreadContext::Get(); |
| switch (pname) { |
| case GR_GL_BUFFER_MAPPED: { |
| *params = GR_GL_FALSE; |
| GrGLuint id = 0; |
| switch (target) { |
| case GR_GL_ARRAY_BUFFER: |
| id = ctx->fCurrArrayBuffer; |
| break; |
| case GR_GL_ELEMENT_ARRAY_BUFFER: |
| id = ctx->fCurrElementArrayBuffer; |
| break; |
| } |
| if (id > 0) { |
| BufferObj* buffer = ctx->fBufferManager.lookUp(id); |
| if (buffer->mapped()) { |
| *params = GR_GL_TRUE; |
| } |
| } |
| break; } |
| default: |
| SkFAIL("Unexpected pname to GetBufferParamateriv"); |
| break; |
| } |
| }; |
| |
| } // end anonymous namespace |
| |
| const GrGLInterface* GrGLCreateNullInterface() { |
| GrGLInterface* interface = SkNEW(GrGLInterface); |
| |
| interface->fStandard = kGL_GrGLStandard; |
| |
| GrGLInterface::Functions* functions = &interface->fFunctions; |
| functions->fActiveTexture = nullGLActiveTexture; |
| functions->fAttachShader = nullGLAttachShader; |
| functions->fBeginQuery = nullGLBeginQuery; |
| functions->fBindAttribLocation = nullGLBindAttribLocation; |
| functions->fBindBuffer = nullGLBindBuffer; |
| functions->fBindFragDataLocation = noOpGLBindFragDataLocation; |
| functions->fBindTexture = nullGLBindTexture; |
| functions->fBindVertexArray = nullGLBindVertexArray; |
| functions->fBlendColor = noOpGLBlendColor; |
| functions->fBlendFunc = noOpGLBlendFunc; |
| functions->fBufferData = nullGLBufferData; |
| functions->fBufferSubData = noOpGLBufferSubData; |
| functions->fClear = noOpGLClear; |
| functions->fClearColor = noOpGLClearColor; |
| functions->fClearStencil = noOpGLClearStencil; |
| functions->fColorMask = noOpGLColorMask; |
| functions->fCompileShader = noOpGLCompileShader; |
| functions->fCompressedTexImage2D = noOpGLCompressedTexImage2D; |
| functions->fCompressedTexSubImage2D = noOpGLCompressedTexSubImage2D; |
| functions->fCopyTexSubImage2D = noOpGLCopyTexSubImage2D; |
| functions->fCreateProgram = nullGLCreateProgram; |
| functions->fCreateShader = nullGLCreateShader; |
| functions->fCullFace = noOpGLCullFace; |
| functions->fDeleteBuffers = nullGLDeleteBuffers; |
| functions->fDeleteProgram = nullGLDelete; |
| functions->fDeleteQueries = noOpGLDeleteIds; |
| functions->fDeleteShader = nullGLDelete; |
| functions->fDeleteTextures = noOpGLDeleteIds; |
| functions->fDeleteVertexArrays = noOpGLDeleteIds; |
| functions->fDepthMask = noOpGLDepthMask; |
| functions->fDisable = noOpGLDisable; |
| functions->fDisableVertexAttribArray = noOpGLDisableVertexAttribArray; |
| functions->fDrawArrays = noOpGLDrawArrays; |
| functions->fDrawBuffer = noOpGLDrawBuffer; |
| functions->fDrawBuffers = noOpGLDrawBuffers; |
| functions->fDrawElements = noOpGLDrawElements; |
| functions->fEnable = noOpGLEnable; |
| functions->fEnableVertexAttribArray = noOpGLEnableVertexAttribArray; |
| functions->fEndQuery = noOpGLEndQuery; |
| functions->fFinish = noOpGLFinish; |
| functions->fFlush = noOpGLFlush; |
| functions->fFlushMappedBufferRange = nullGLFlushMappedBufferRange; |
| functions->fFrontFace = noOpGLFrontFace; |
| functions->fGenBuffers = nullGLGenBuffers; |
| functions->fGenerateMipmap = nullGLGenerateMipmap; |
| functions->fGenQueries = noOpGLGenIds; |
| functions->fGenTextures = noOpGLGenIds; |
| functions->fGenVertexArrays = noOpGLGenIds; |
| functions->fGetBufferParameteriv = nullGLGetBufferParameteriv; |
| functions->fGetError = noOpGLGetError; |
| functions->fGetIntegerv = noOpGLGetIntegerv; |
| functions->fGetQueryObjecti64v = noOpGLGetQueryObjecti64v; |
| functions->fGetQueryObjectiv = noOpGLGetQueryObjectiv; |
| functions->fGetQueryObjectui64v = noOpGLGetQueryObjectui64v; |
| functions->fGetQueryObjectuiv = noOpGLGetQueryObjectuiv; |
| functions->fGetQueryiv = noOpGLGetQueryiv; |
| functions->fGetProgramInfoLog = noOpGLGetInfoLog; |
| functions->fGetProgramiv = noOpGLGetShaderOrProgramiv; |
| functions->fGetShaderInfoLog = noOpGLGetInfoLog; |
| functions->fGetShaderiv = noOpGLGetShaderOrProgramiv; |
| functions->fGetString = noOpGLGetString; |
| functions->fGetStringi = noOpGLGetStringi; |
| functions->fGetTexLevelParameteriv = noOpGLGetTexLevelParameteriv; |
| functions->fGetUniformLocation = noOpGLGetUniformLocation; |
| functions->fInsertEventMarker = noOpGLInsertEventMarker; |
| functions->fLineWidth = noOpGLLineWidth; |
| functions->fLinkProgram = noOpGLLinkProgram; |
| functions->fMapBuffer = nullGLMapBuffer; |
| functions->fMapBufferRange = nullGLMapBufferRange; |
| functions->fPixelStorei = nullGLPixelStorei; |
| functions->fPopGroupMarker = noOpGLPopGroupMarker; |
| functions->fPushGroupMarker = noOpGLPushGroupMarker; |
| functions->fQueryCounter = noOpGLQueryCounter; |
| functions->fReadBuffer = noOpGLReadBuffer; |
| functions->fReadPixels = nullGLReadPixels; |
| functions->fScissor = noOpGLScissor; |
| functions->fShaderSource = noOpGLShaderSource; |
| functions->fStencilFunc = noOpGLStencilFunc; |
| functions->fStencilFuncSeparate = noOpGLStencilFuncSeparate; |
| functions->fStencilMask = noOpGLStencilMask; |
| functions->fStencilMaskSeparate = noOpGLStencilMaskSeparate; |
| functions->fStencilOp = noOpGLStencilOp; |
| functions->fStencilOpSeparate = noOpGLStencilOpSeparate; |
| functions->fTexImage2D = noOpGLTexImage2D; |
| functions->fTexParameteri = noOpGLTexParameteri; |
| functions->fTexParameteriv = noOpGLTexParameteriv; |
| functions->fTexSubImage2D = noOpGLTexSubImage2D; |
| functions->fTexStorage2D = noOpGLTexStorage2D; |
| functions->fDiscardFramebuffer = noOpGLDiscardFramebuffer; |
| functions->fUniform1f = noOpGLUniform1f; |
| functions->fUniform1i = noOpGLUniform1i; |
| functions->fUniform1fv = noOpGLUniform1fv; |
| functions->fUniform1iv = noOpGLUniform1iv; |
| functions->fUniform2f = noOpGLUniform2f; |
| functions->fUniform2i = noOpGLUniform2i; |
| functions->fUniform2fv = noOpGLUniform2fv; |
| functions->fUniform2iv = noOpGLUniform2iv; |
| functions->fUniform3f = noOpGLUniform3f; |
| functions->fUniform3i = noOpGLUniform3i; |
| functions->fUniform3fv = noOpGLUniform3fv; |
| functions->fUniform3iv = noOpGLUniform3iv; |
| functions->fUniform4f = noOpGLUniform4f; |
| functions->fUniform4i = noOpGLUniform4i; |
| functions->fUniform4fv = noOpGLUniform4fv; |
| functions->fUniform4iv = noOpGLUniform4iv; |
| functions->fUniformMatrix2fv = noOpGLUniformMatrix2fv; |
| functions->fUniformMatrix3fv = noOpGLUniformMatrix3fv; |
| functions->fUniformMatrix4fv = noOpGLUniformMatrix4fv; |
| functions->fUnmapBuffer = nullGLUnmapBuffer; |
| functions->fUseProgram = nullGLUseProgram; |
| functions->fVertexAttrib4fv = noOpGLVertexAttrib4fv; |
| functions->fVertexAttribPointer = noOpGLVertexAttribPointer; |
| functions->fViewport = nullGLViewport; |
| functions->fBindFramebuffer = nullGLBindFramebuffer; |
| functions->fBindRenderbuffer = nullGLBindRenderbuffer; |
| functions->fCheckFramebufferStatus = noOpGLCheckFramebufferStatus; |
| functions->fDeleteFramebuffers = nullGLDeleteFramebuffers; |
| functions->fDeleteRenderbuffers = nullGLDeleteRenderbuffers; |
| functions->fFramebufferRenderbuffer = nullGLFramebufferRenderbuffer; |
| functions->fFramebufferTexture2D = nullGLFramebufferTexture2D; |
| functions->fGenFramebuffers = noOpGLGenIds; |
| functions->fGenRenderbuffers = noOpGLGenIds; |
| functions->fGetFramebufferAttachmentParameteriv = noOpGLGetFramebufferAttachmentParameteriv; |
| functions->fGetRenderbufferParameteriv = noOpGLGetRenderbufferParameteriv; |
| functions->fRenderbufferStorage = noOpGLRenderbufferStorage; |
| functions->fRenderbufferStorageMultisample = noOpGLRenderbufferStorageMultisample; |
| functions->fBlitFramebuffer = noOpGLBlitFramebuffer; |
| functions->fResolveMultisampleFramebuffer = noOpGLResolveMultisampleFramebuffer; |
| functions->fMatrixLoadf = noOpGLMatrixLoadf; |
| functions->fMatrixLoadIdentity = noOpGLMatrixLoadIdentity; |
| functions->fBindFragDataLocationIndexed = noOpGLBindFragDataLocationIndexed; |
| |
| interface->fExtensions.init(kGL_GrGLStandard, functions->fGetString, functions->fGetStringi, |
| functions->fGetIntegerv); |
| return interface; |
| } |
