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imageShaderRenderPass.h
1//
2// Copyright 2019 Pixar
3//
4// Licensed under the Apache License, Version 2.0 (the "Apache License")
5// with the following modification; you may not use this file except in
6// compliance with the Apache License and the following modification to it:
7// Section 6. Trademarks. is deleted and replaced with:
8//
9// 6. Trademarks. This License does not grant permission to use the trade
10// names, trademarks, service marks, or product names of the Licensor
11// and its affiliates, except as required to comply with Section 4(c) of
12// the License and to reproduce the content of the NOTICE file.
13//
14// You may obtain a copy of the Apache License at
15//
16// http://www.apache.org/licenses/LICENSE-2.0
17//
18// Unless required by applicable law or agreed to in writing, software
19// distributed under the Apache License with the above modification is
20// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
21// KIND, either express or implied. See the Apache License for the specific
22// language governing permissions and limitations under the Apache License.
23//
24#ifndef PXR_IMAGING_HD_ST_IMAGE_SHADER_RENDER_PASS_H
25#define PXR_IMAGING_HD_ST_IMAGE_SHADER_RENDER_PASS_H
26
27#include "pxr/pxr.h"
28#include "pxr/imaging/hdSt/api.h"
29#include "pxr/imaging/hdSt/drawItemInstance.h"
30#include "pxr/imaging/hd/renderPass.h"
31
32#include <memory>
33
34PXR_NAMESPACE_OPEN_SCOPE
35
36using HdStResourceRegistrySharedPtr =
37 std::shared_ptr<class HdStResourceRegistry>;
38
39using HdSt_ImageShaderRenderPassSharedPtr =
40 std::shared_ptr<class HdSt_ImageShaderRenderPass>;
41using HdStResourceRegistrySharedPtr =
42 std::shared_ptr<class HdStResourceRegistry>;
43
44class Hgi;
45
54class HdSt_ImageShaderRenderPass final : public HdRenderPass {
55public:
56 HDST_API
57 HdSt_ImageShaderRenderPass(HdRenderIndex *index,
58 HdRprimCollection const &collection);
59
60 HDST_API
61 virtual ~HdSt_ImageShaderRenderPass();
62
63 // Set the vertex BAR and geometric shader for the triangle.
64 // This function should be called before the Execute task phase.
65 HDST_API
66 void SetupFullscreenTriangleDrawItem();
67protected:
68
69 void _Execute(HdRenderPassStateSharedPtr const &renderPassState,
70 TfTokenVector const &renderTags) override;
71
72private:
73 // Setup a BAR for a single triangle
74 void _SetupVertexPrimvarBAR(HdStResourceRegistrySharedPtr const&);
75
76 // We re-use the immediateBatch to draw the full-screen triangle.
77 HdRprimSharedData _sharedData;
78 HdStDrawItem _drawItem;
79 HdStDrawItemInstance _drawItemInstance;
80 HdSt_DrawBatchSharedPtr _drawBatch;
81 Hgi* _hgi;
82};
83
84PXR_NAMESPACE_CLOSE_SCOPE
85
86#endif
The Hydra render index is a flattened representation of the client scene graph, which may be composed...
Definition: renderIndex.h:121
An abstract class representing a single render iteration over a set of prims (the HdRprimCollection),...
Definition: renderPass.h:70
virtual void _Execute(HdRenderPassStateSharedPtr const &renderPassState, TfTokenVector const &renderTags)=0
Virtual API: Execute the buckets corresponding to renderTags; renderTags.empty() implies execute ever...
A named, semantic collection of objects.
A container to store instance state for a drawitem.
Hydra Graphics Interface.
Definition: hgi.h:111
std::vector< TfToken > TfTokenVector
Convenience types.
Definition: token.h:457