1 files changed, 156 insertions, 0 deletions
diff --git a/dom/canvas/WebGL2Context.h b/dom/canvas/WebGL2Context.h
new file mode 100644
index 0000000000..138dd85b80
--- /dev/null
+++ b/dom/canvas/WebGL2Context.h
@@ -0,0 +1,156 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef WEBGL2CONTEXT_H_
+#define WEBGL2CONTEXT_H_
+
+#include "WebGLContext.h"
+
+namespace mozilla {
+
+class ErrorResult;
+class HostWebGLContext;
+class WebGLSampler;
+class WebGLSync;
+class WebGLTransformFeedback;
+class WebGLVertexArrayObject;
+namespace dom {
+class OwningUnsignedLongOrUint32ArrayOrBoolean;
+class OwningWebGLBufferOrLongLong;
+}  // namespace dom
+
+class WebGL2Context final : public WebGLContext {
+  friend class WebGLContext;
+
+ public:
+  WebGL2Context(HostWebGLContext* host, const webgl::InitContextDesc& desc)
+      : WebGLContext(host, desc) {}
+
+  virtual bool IsWebGL2() const override { return true; }
+
+  // -------------------------------------------------------------------------
+  // Buffer objects - WebGL2ContextBuffers.cpp
+
+  void CopyBufferSubData(GLenum readTarget, GLenum writeTarget,
+                         uint64_t readOffset, uint64_t writeOffset,
+                         uint64_t size) const;
+  bool GetBufferSubData(GLenum target, uint64_t srcByteOffset,
+                        const Range<uint8_t>& dest) const;
+
+  // -------------------------------------------------------------------------
+  // Framebuffer objects - WebGL2ContextFramebuffers.cpp
+
+  void BlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+                       GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+                       GLbitfield mask, GLenum filter);
+
+  void InvalidateFramebuffer(GLenum target,
+                             const Range<const GLenum>& attachments);
+  void InvalidateSubFramebuffer(GLenum target,
+                                const Range<const GLenum>& attachments, GLint x,
+                                GLint y, GLsizei width, GLsizei height);
+  void ReadBuffer(GLenum mode);
+
+  // -------------------------------------------------------------------------
+  // Renderbuffer objects - WebGL2ContextRenderbuffers.cpp
+
+  Maybe<std::vector<int32_t>> GetInternalformatParameter(GLenum target,
+                                                         GLenum internalformat,
+                                                         GLenum pname) const;
+
+  // -------------------------------------------------------------------------
+  // Texture objects - WebGL2ContextTextures.cpp
+
+  // GL 3.0 & ES 3.0
+  void VertexAttribI4i(GLuint index, GLint x, GLint y, GLint z, GLint w);
+  void VertexAttribI4ui(GLuint index, GLuint x, GLuint y, GLuint z, GLuint w);
+
+  // -------------------------------------------------------------------------
+  // Writing to the drawing buffer
+
+  /* Implemented in WebGLContext
+  void VertexAttribDivisor(GLuint index, GLuint divisor);
+  void DrawArraysInstanced(GLenum mode, GLint first, GLsizei count,
+                           GLsizei instanceCount);
+  void DrawElementsInstanced(GLenum mode, GLsizei count, GLenum type,
+                             WebGLintptr offset, GLsizei instanceCount);
+  */
+
+  // ------------------------------------------------------------------------
+  // Multiple Render Targets - WebGL2ContextMRTs.cpp
+
+ private:
+  bool ValidateClearBuffer(GLenum buffer, GLint drawBuffer,
+                           webgl::AttribBaseType funcType);
+
+ public:
+  void ClearBufferfi(GLenum buffer, GLint drawBuffer, GLfloat depth,
+                     GLint stencil);
+  void ClearBufferTv(GLenum buffer, GLint drawBuffer,
+                     const webgl::TypedQuad& data);
+
+  // -------------------------------------------------------------------------
+  // Sampler Objects - WebGL2ContextSamplers.cpp
+
+  RefPtr<WebGLSampler> CreateSampler();
+  void BindSampler(GLuint unit, WebGLSampler* sampler);
+  void SamplerParameteri(WebGLSampler& sampler, GLenum pname, GLint param);
+  void SamplerParameterf(WebGLSampler& sampler, GLenum pname, GLfloat param);
+  Maybe<double> GetSamplerParameter(const WebGLSampler& sampler,
+                                    GLenum pname) const;
+
+  // -------------------------------------------------------------------------
+  // Sync objects - WebGL2ContextSync.cpp
+
+  const GLuint64 kMaxClientWaitSyncTimeoutNS =
+      1000 * 1000 * 1000;  // 1000ms in ns.
+
+  RefPtr<WebGLSync> FenceSync(GLenum condition, GLbitfield flags);
+  GLenum ClientWaitSync(const WebGLSync& sync, GLbitfield flags,
+                        GLuint64 timeout);
+
+  // -------------------------------------------------------------------------
+  // Transform Feedback - WebGL2ContextTransformFeedback.cpp
+
+  RefPtr<WebGLTransformFeedback> CreateTransformFeedback();
+  void BindTransformFeedback(WebGLTransformFeedback* tf);
+  void BeginTransformFeedback(GLenum primitiveMode);
+  void EndTransformFeedback();
+  void PauseTransformFeedback();
+  void ResumeTransformFeedback();
+  void TransformFeedbackVaryings(WebGLProgram& program,
+                                 const std::vector<std::string>& varyings,
+                                 GLenum bufferMode) const;
+
+  // -------------------------------------------------------------------------
+  // Uniform Buffer Objects and Transform Feedback Buffers -
+  // WebGL2ContextUniforms.cpp
+  // TODO(djg): Implemented in WebGLContext
+  /*
+      void BindBufferBase(GLenum target, GLuint index, WebGLBuffer* buffer);
+      void BindBufferRange(GLenum target, GLuint index, WebGLBuffer* buffer,
+                           WebGLintptr offset, WebGLsizeiptr size);
+  */
+  Maybe<double> GetParameter(GLenum pname) override;
+  Maybe<double> GetIndexedParameter(GLenum pname, uint32_t index) const;
+
+  // Make the inline version from the superclass visible here.
+  using WebGLContext::GetParameter;
+
+  void UniformBlockBinding(WebGLProgram& program, GLuint uniformBlockIndex,
+                           GLuint uniformBlockBinding);
+
+ private:
+  virtual UniquePtr<webgl::FormatUsageAuthority> CreateFormatUsage(
+      gl::GLContext* gl) const override;
+
+  virtual bool IsTexParamValid(GLenum pname) const override;
+
+  void UpdateBoundQuery(GLenum target, WebGLQuery* query);
+};
+
+}  // namespace mozilla
+
+#endif