Remove reliance on linked in GL functions for assembling GLES interfaces

src/gpu/gl/GrGLAssembleInterface.cpp

 
 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrGLAssembleInterface.h"
 #include "GrGLUtil.h"
 
 #define GET_PROC(F) functions->f ## F = (GrGL ## F ## Proc) get(ctx, "gl" #F)
 #define GET_PROC_SUFFIX(F, S) functions->f ## F = (GrGL ## F ## Proc) get(ctx, "gl" #F #S)
 #define GET_PROC_LOCAL(F) GrGL ## F ## Proc F = (GrGL ## F ## Proc) get(ctx, "gl" #F)
 
+const GrGLInterface* GrGLAssembleInterface(void* ctx, GrGLGetProc get) {
+    GET_PROC_LOCAL(GetString);
+    if (NULL == GetString) {
+        return NULL;
+    }
+
+    const char* verStr = reinterpret_cast<const char*>(GetString(GR_GL_VERSION));
+    if (NULL == verStr) {
+        return NULL;
+    }
+
+    GrGLStandard standard = GrGLGetStandardInUseFromString(verStr);
+
+    if (kGLES_GrGLStandard == standard) {
+        return GrGLAssembleGLESInterface(ctx, get);
+    } else if (kGL_GrGLStandard == standard) {
+        return GrGLAssembleGLInterface(ctx, get);
+    }
+    return NULL;
+}
+
 const GrGLInterface* GrGLAssembleGLInterface(void* ctx, GrGLGetProc get) {
     GET_PROC_LOCAL(GetString);
     GET_PROC_LOCAL(GetStringi);
     GET_PROC_LOCAL(GetIntegerv);
 
     // GetStringi may be NULL depending on the GL version.
     if (NULL == GetString || NULL == GetIntegerv) {
         return NULL;
     }
 
@@ skipping 238 matching lines @@
 
     if (glVer >= GR_GL_VER(4,3) || extensions.has("GL_ARB_program_interface_query")) {
         GET_PROC(GetProgramResourceLocation);
     }
 
     interface->fStandard = kGL_GrGLStandard;
     interface->fExtensions.swap(&extensions);
 
     return interface;
 }
+
+const GrGLInterface* GrGLAssembleGLESInterface(void* ctx, GrGLGetProc get) {
+    GET_PROC_LOCAL(GetString);
+    if (NULL == GetString) {
+        return NULL;
+    }
+
+    const char* verStr = reinterpret_cast<const char*>(GetString(GR_GL_VERSION));
+    GrGLVersion version = GrGLGetVersionFromString(verStr);
+
+    if (version < GR_GL_VER(2,0)) {
+        return NULL;
+    }
+
+    GET_PROC_LOCAL(GetIntegerv);
+    GET_PROC_LOCAL(GetStringi);
+    GrGLExtensions extensions;
+    if (!extensions.init(kGLES_GrGLStandard, GetString, GetStringi, GetIntegerv)) {
+        return NULL;
+    }
+
+    GrGLInterface* interface = SkNEW(GrGLInterface);
+    GrGLInterface::Functions* functions = &interface->fFunctions;
+
+    GET_PROC(ActiveTexture);
+    GET_PROC(AttachShader);
+    GET_PROC(BindAttribLocation);
+    GET_PROC(BindBuffer);
+    GET_PROC(BindTexture);
+    GET_PROC_SUFFIX(BindVertexArray, OES);
+    GET_PROC(BlendColor);
+    GET_PROC(BlendFunc);
+    GET_PROC(BufferData);
+    GET_PROC(BufferSubData);
+    GET_PROC(Clear);
+    GET_PROC(ClearColor);
+    GET_PROC(ClearStencil);
+    GET_PROC(ColorMask);
+    GET_PROC(CompileShader);
+    GET_PROC(CompressedTexImage2D);
+    GET_PROC(CompressedTexSubImage2D);
+    GET_PROC(CopyTexSubImage2D);
+    GET_PROC(CreateProgram);
+    GET_PROC(CreateShader);
+    GET_PROC(CullFace);
+    GET_PROC(DeleteBuffers);
+    GET_PROC(DeleteProgram);
+    GET_PROC(DeleteShader);
+    GET_PROC(DeleteTextures);
+    GET_PROC_SUFFIX(DeleteVertexArrays, OES);
+    GET_PROC(DepthMask);
+    GET_PROC(Disable);
+    GET_PROC(DisableVertexAttribArray);
+    GET_PROC(DrawArrays);
+    GET_PROC(DrawElements);
+    GET_PROC(Enable);
+    GET_PROC(EnableVertexAttribArray);
+    GET_PROC(Finish);
+    GET_PROC(Flush);
+    GET_PROC(FrontFace);
+    GET_PROC(GenBuffers);
+    GET_PROC(GenerateMipmap);
+    GET_PROC(GenTextures);
+    GET_PROC_SUFFIX(GenVertexArrays, OES);
+    GET_PROC(GetBufferParameteriv);
+    GET_PROC(GetError);
+    GET_PROC(GetIntegerv);
+    GET_PROC(GetProgramInfoLog);
+    GET_PROC(GetProgramiv);
+    GET_PROC(GetShaderInfoLog);
+    GET_PROC(GetShaderiv);
+    GET_PROC(GetString);
+    GET_PROC(GetStringi);
+    GET_PROC(GetUniformLocation);
+    GET_PROC(LineWidth);
+    GET_PROC(LinkProgram);
+    GET_PROC(PixelStorei);
+    GET_PROC(ReadPixels);
+    GET_PROC(Scissor);
+    GET_PROC(ShaderSource);
+    GET_PROC(StencilFunc);
+    GET_PROC(StencilFuncSeparate);
+    GET_PROC(StencilMask);
+    GET_PROC(StencilMaskSeparate);
+    GET_PROC(StencilOp);
+    GET_PROC(StencilOpSeparate);
+    GET_PROC(TexImage2D);
+    GET_PROC(TexParameteri);
+    GET_PROC(TexParameteriv);
+    GET_PROC(TexSubImage2D);
+
+    if (version >= GR_GL_VER(3,0)) {
+        GET_PROC(TexStorage2D);
+    } else {
+        GET_PROC_SUFFIX(TexStorage2D, EXT);
+    }
+
+    GET_PROC_SUFFIX(DiscardFramebuffer, EXT);
+    GET_PROC(Uniform1f);
+    GET_PROC(Uniform1i);
+    GET_PROC(Uniform1fv);
+    GET_PROC(Uniform1iv);
+    GET_PROC(Uniform2f);
+    GET_PROC(Uniform2i);
+    GET_PROC(Uniform2fv);
+    GET_PROC(Uniform2iv);
+    GET_PROC(Uniform3f);
+    GET_PROC(Uniform3i);
+    GET_PROC(Uniform3fv);
+    GET_PROC(Uniform3iv);
+    GET_PROC(Uniform4f);
+    GET_PROC(Uniform4i);
+    GET_PROC(Uniform4fv);
+    GET_PROC(Uniform4iv);
+    GET_PROC(UniformMatrix2fv);
+    GET_PROC(UniformMatrix3fv);
+    GET_PROC(UniformMatrix4fv);
+    GET_PROC(UseProgram);
+    GET_PROC(VertexAttrib4fv);
+    GET_PROC(VertexAttribPointer);
+    GET_PROC(Viewport);
+    GET_PROC(BindFramebuffer);
+    GET_PROC(BindRenderbuffer);
+    GET_PROC(CheckFramebufferStatus);
+    GET_PROC(DeleteFramebuffers);
+    GET_PROC(DeleteRenderbuffers);
+    GET_PROC(FramebufferRenderbuffer);
+    GET_PROC(FramebufferTexture2D);
+
+    if (version >= GR_GL_VER(3,0)) {
+        GET_PROC(RenderbufferStorageMultisample);
+        GET_PROC(BlitFramebuffer);
+    }
+
+    if (extensions.has("GL_EXT_multisampled_render_to_texture")) {
+        GET_PROC_SUFFIX(FramebufferTexture2DMultisample, EXT);
+        functions->fRenderbufferStorageMultisampleES2EXT = (GrGLRenderbufferStorageMultisampleProc) get(ctx, "glRenderbufferStorageMultisampleEXT");
+    } else if (extensions.has("GL_IMG_multisampled_render_to_texture")) {
+        GET_PROC_SUFFIX(FramebufferTexture2DMultisample, IMG);
+        functions->fRenderbufferStorageMultisampleES2EXT = (GrGLRenderbufferStorageMultisampleProc) get(ctx, "glRenderbufferStorageMultisampleIMG");
+    } else if (extensions.has("GL_APPLE_framebuffer_multisample")) {
+        functions->fRenderbufferStorageMultisampleES2APPLE = (GrGLRenderbufferStorageMultisampleProc) get(ctx, "glRenderbufferStorageMultisampleAPPLE");
+        GET_PROC_SUFFIX(ResolveMultisampleFramebuffer, APPLE);
+    }
+
+    GET_PROC(GenFramebuffers);
+    GET_PROC(GenRenderbuffers);
+    GET_PROC(GetFramebufferAttachmentParameteriv);
+    GET_PROC(GetRenderbufferParameteriv);
+    GET_PROC(RenderbufferStorage);
+
+    GET_PROC_SUFFIX(MapBuffer, OES);
+    GET_PROC_SUFFIX(UnmapBuffer, OES);
+
+    if (version >= GR_GL_VER(3,0)) {
+        GET_PROC(MapBufferRange);
+        GET_PROC(FlushMappedBufferRange);
+    } else if (extensions.has("GL_EXT_map_buffer_range")) {
+        GET_PROC_SUFFIX(MapBufferRange, EXT);
+        GET_PROC_SUFFIX(FlushMappedBufferRange, EXT);
+    }
+
+    if (extensions.has("GL_EXT_debug_marker")) {
+        GET_PROC(InsertEventMarker);
+        GET_PROC(PushGroupMarker);
+        GET_PROC(PopGroupMarker);
+        // The below check is here because a device has been found that has the extension string but
+        // returns NULL from the eglGetProcAddress for the functions
+        if (NULL == functions->fInsertEventMarker ||
+            NULL == functions->fPushGroupMarker ||
+            NULL == functions->fPopGroupMarker) {
+            extensions.remove("GL_EXT_debug_marker");
+        }
+    }
+
+    GET_PROC(InvalidateFramebuffer);
+    GET_PROC(InvalidateSubFramebuffer);
+    GET_PROC(InvalidateBufferData);
+    GET_PROC(InvalidateBufferSubData);
+    GET_PROC(InvalidateTexImage);
+    GET_PROC(InvalidateTexSubImage);
+
+    if (version >= GR_GL_VER(3,1)) {
+        GET_PROC(GetProgramResourceLocation);
+    }
+
+    if (extensions.has("GL_NV_path_rendering")) {
+        GET_PROC_SUFFIX(MatrixLoadf, EXT);
+        GET_PROC_SUFFIX(MatrixLoadIdentity, EXT);
+        GET_PROC_SUFFIX(PathCommands, NV);
+        GET_PROC_SUFFIX(PathCoords, NV);
+        GET_PROC_SUFFIX(PathParameteri, NV);
+        GET_PROC_SUFFIX(PathParameterf, NV);
+        GET_PROC_SUFFIX(GenPaths, NV);
+        GET_PROC_SUFFIX(DeletePaths, NV);
+        GET_PROC_SUFFIX(IsPath, NV);
+        GET_PROC_SUFFIX(PathStencilFunc, NV);
+        GET_PROC_SUFFIX(StencilFillPath, NV);
+        GET_PROC_SUFFIX(StencilStrokePath, NV);
+        GET_PROC_SUFFIX(StencilFillPathInstanced, NV);
+        GET_PROC_SUFFIX(StencilStrokePathInstanced, NV);
+        GET_PROC_SUFFIX(CoverFillPath, NV);
+        GET_PROC_SUFFIX(CoverStrokePath, NV);
+        GET_PROC_SUFFIX(CoverFillPathInstanced, NV);
+        GET_PROC_SUFFIX(CoverStrokePathInstanced, NV);
+        GET_PROC_SUFFIX(StencilThenCoverFillPath, NV);
+        GET_PROC_SUFFIX(StencilThenCoverStrokePath, NV);
+        GET_PROC_SUFFIX(StencilThenCoverFillPathInstanced, NV);
+        GET_PROC_SUFFIX(StencilThenCoverStrokePathInstanced, NV);
+        GET_PROC_SUFFIX(ProgramPathFragmentInputGen, NV);
+    }
+
+    interface->fStandard = kGLES_GrGLStandard;
+    interface->fExtensions.swap(&extensions);
+
+    return interface;
+}