| 1 | // Copyright (C) 2019 Klaralvdalens Datakonsult AB (KDAB). |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #ifndef QT3DRENDER_RENDER_OPENGL_TEXTURESUBMISSIONCONTEXT_H |
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| 5 | #define QT3DRENDER_RENDER_OPENGL_TEXTURESUBMISSIONCONTEXT_H |
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| 6 | |
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| 7 | // |
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| 8 | // W A R N I N G |
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| 9 | // ------------- |
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| 10 | // |
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| 11 | // This file is not part of the Qt API. It exists for the convenience |
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| 12 | // of other Qt classes. This header file may change from version to |
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| 13 | // version without notice, or even be removed. |
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| 14 | // |
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| 15 | // We mean it. |
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| 16 | // |
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| 17 | |
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| 18 | |
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| 19 | #include <qglobal.h> |
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| 20 | #include <vector> |
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| 21 | |
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| 22 | QT_BEGIN_NAMESPACE |
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| 23 | |
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| 24 | class QOpenGLContext; |
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| 25 | |
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| 26 | namespace Qt3DRender { |
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| 27 | namespace Render { |
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| 28 | namespace OpenGL { |
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| 29 | |
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| 30 | class GraphicsContext; |
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| 31 | class GLTexture; |
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| 32 | |
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| 33 | class Q_AUTOTEST_EXPORT TextureSubmissionContext |
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| 34 | { |
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| 35 | public: |
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| 36 | enum TextureScope |
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| 37 | { |
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| 38 | TextureScopeMaterial = 0, |
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| 39 | TextureScopeTechnique |
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| 40 | // per-pass for deferred rendering? |
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| 41 | }; |
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| 42 | |
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| 43 | TextureSubmissionContext(); |
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| 44 | ~TextureSubmissionContext(); |
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| 45 | |
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| 46 | void initialize(GraphicsContext *context); |
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| 47 | void endDrawing(); |
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| 48 | int activateTexture(TextureScope scope, QOpenGLContext *gl, GLTexture* tex); |
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| 49 | void deactivateTexture(GLTexture *tex); |
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| 50 | void deactivateTexturesWithScope(TextureScope ts); |
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| 51 | |
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| 52 | private: |
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| 53 | void decayTextureScores(); |
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| 54 | int assignUnitForTexture(GLTexture* tex); |
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| 55 | |
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| 56 | // active textures, indexed by texture unit |
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| 57 | struct ActiveTexture { |
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| 58 | GLTexture *texture = nullptr; |
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| 59 | int score = 0; |
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| 60 | TextureScope scope = TextureScopeMaterial; |
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| 61 | bool pinned = false; |
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| 62 | }; |
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| 63 | std::vector<ActiveTexture> m_activeTextures; |
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| 64 | }; |
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| 65 | |
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| 66 | } // namespace OpenGL |
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| 67 | } // namespace Render |
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| 68 | } // namespace Qt3DRender |
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| 69 | |
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| 70 | QT_END_NAMESPACE |
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| 71 | |
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| 72 | #endif // QT3DRENDER_RENDER_OPENGL_TEXTURESUBMISSIONCONTEXT_H |
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| 73 | |
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