1 // 2 // Copyright 2020 The ANGLE Project Authors. All rights reserved. 3 // Use of this source code is governed by a BSD-style license that can be 4 // found in the LICENSE file. 5 // 6 // TransformFeedbackMtl.h: 7 // Defines the class interface for TransformFeedbackMtl, implementing TransformFeedbackImpl. 8 // 9 10 #ifndef LIBANGLE_RENDERER_METAL_TRANSFORMFEEDBACKMTL_H_ 11 #define LIBANGLE_RENDERER_METAL_TRANSFORMFEEDBACKMTL_H_ 12 13 #include "libANGLE/renderer/TransformFeedbackImpl.h" 14 15 namespace rx 16 { 17 18 class ContextMtl; 19 20 class TransformFeedbackMtl : public TransformFeedbackImpl 21 { 22 public: 23 TransformFeedbackMtl(const gl::TransformFeedbackState &state); 24 ~TransformFeedbackMtl() override; 25 26 angle::Result begin(const gl::Context *context, gl::PrimitiveMode primitiveMode) override; 27 angle::Result end(const gl::Context *context) override; 28 angle::Result pause(const gl::Context *context) override; 29 angle::Result resume(const gl::Context *context) override; 30 31 angle::Result bindIndexedBuffer(const gl::Context *context, 32 size_t index, 33 const gl::OffsetBindingPointer<gl::Buffer> &binding) override; 34 35 // Params: 36 // - drawCallFirstVertex is first vertex used by glDrawArrays*. This is important because 37 // gl_VertexIndex is starting from this. 38 // - skippedVertices is number of skipped vertices (useful for multiple metal draws per GL draw 39 // call). 40 angle::Result getBufferOffsets(ContextMtl *contextMtl, 41 GLint drawCallFirstVertex, 42 uint32_t skippedVertices, 43 int32_t *offsetsOut); 44 45 private: 46 }; 47 48 } // namespace rx 49 50 #endif // LIBANGLE_RENDERER_METAL_TRANSFORMFEEDBACKMTL_H_ 51