| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGL_WEBGL_TRANSFORM_FEEDBACK_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGL_WEBGL_TRANSFORM_FEEDBACK_H_ |
| |
| #include "base/memory/scoped_refptr.h" |
| #include "third_party/blink/renderer/modules/webgl/webgl_context_object.h" |
| #include "third_party/blink/renderer/modules/webgl/webgl_program.h" |
| |
| namespace blink { |
| |
| class WebGL2RenderingContextBase; |
| class WebGLBuffer; |
| |
| class WebGLTransformFeedback : public WebGLContextObject { |
| DEFINE_WRAPPERTYPEINFO(); |
| |
| public: |
| enum TFType { |
| TFTypeDefault, |
| TFTypeUser, |
| }; |
| |
| explicit WebGLTransformFeedback(WebGL2RenderingContextBase*, TFType); |
| ~WebGLTransformFeedback() override; |
| |
| GLuint Object() const { return object_; } |
| |
| static WebGLTransformFeedback* Create(WebGL2RenderingContextBase*, TFType); |
| |
| bool IsDefaultObject() const { return type_ == TFTypeDefault; } |
| |
| GLenum GetTarget() const { return target_; } |
| void SetTarget(GLenum); |
| |
| bool HasEverBeenBound() const { return object_ && target_; } |
| |
| WebGLProgram* GetProgram() const { return program_; } |
| void SetProgram(WebGLProgram*); |
| |
| // These are the indexed bind points for transform feedback buffers. |
| // Returns false if index is out of range and the caller should |
| // synthesize a GL error. |
| bool SetBoundIndexedTransformFeedbackBuffer(GLuint index, WebGLBuffer*); |
| bool GetBoundIndexedTransformFeedbackBuffer(GLuint index, |
| WebGLBuffer** outBuffer) const; |
| bool HasEnoughBuffers(GLuint num_required) const; |
| |
| bool UsesBuffer(WebGLBuffer*); |
| void UnbindBuffer(WebGLBuffer*); |
| |
| void Trace(blink::Visitor*) override; |
| |
| bool active() const { return active_; } |
| bool paused() const { return paused_; } |
| const HeapVector<Member<WebGLBuffer>>& |
| bound_indexed_transform_feedback_buffers() const { |
| return bound_indexed_transform_feedback_buffers_; |
| } |
| |
| void SetActive(bool active) { |
| active_ = active; |
| DCHECK(active_ || !paused_); |
| } |
| void SetPaused(bool paused) { |
| paused_ = paused; |
| DCHECK(active_ || !paused_); |
| } |
| |
| bool ValidateProgramForResume(WebGLProgram*) const; |
| |
| private: |
| void DispatchDetached(gpu::gles2::GLES2Interface*); |
| bool HasObject() const override { return object_ != 0; } |
| void DeleteObjectImpl(gpu::gles2::GLES2Interface*) override; |
| |
| GLuint object_; |
| |
| TFType type_; |
| GLenum target_; |
| |
| HeapVector<Member<WebGLBuffer>> bound_indexed_transform_feedback_buffers_; |
| |
| Member<WebGLProgram> program_; |
| unsigned program_link_count_; |
| bool active_; |
| bool paused_; |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGL_WEBGL_TRANSFORM_FEEDBACK_H_ |