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/****************************************************************************
**
** Copyright (C) 2019 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QT3DSDISTANCEFIELDRENDERER_H
#define QT3DSDISTANCEFIELDRENDERER_H
#include "Qt3DSFontDatabase_p.h"
#if QT_VERSION >= QT_VERSION_CHECK(5,12,2)
#include "Qt3DSTextRenderer.h"
#include "Qt3DSRenderText.h"
#include "render/Qt3DSRenderShaderProgram.h"
#include "Qt3DSDistanceFieldGlyphCacheManager_p.h"
#include "Qt3DSDistanceFieldGlyphCache_p.h"
namespace qt3ds {
namespace render {
struct GlyphInfo {
QVector<float> vertexes;
QVector<quint32> glyphIndexes;
Q3DSDistanceFieldGlyphCache *cache;
float fontScale;
float shadowOffsetX;
float shadowOffsetY;
NVBounds3 bounds;
};
struct Q3DSDistanceFieldShader {
NVRenderShaderProgram *program = nullptr;
NVRenderCachedShaderProperty<QT3DSMat44> mvp;
NVRenderCachedShaderProperty<QT3DSI32> textureWidth;
NVRenderCachedShaderProperty<QT3DSI32> textureHeight;
NVRenderCachedShaderProperty<QT3DSF32> fontScale;
NVRenderCachedShaderProperty<NVRenderTexture2D *> texture;
NVRenderCachedShaderProperty<QT3DSVec4> color;
};
struct Q3DSDistanceFieldDropShadowShader {
NVRenderShaderProgram *program = nullptr;
NVRenderCachedShaderProperty<QT3DSMat44> mvp;
NVRenderCachedShaderProperty<QT3DSI32> textureWidth;
NVRenderCachedShaderProperty<QT3DSI32> textureHeight;
NVRenderCachedShaderProperty<QT3DSF32> fontScale;
NVRenderCachedShaderProperty<QT3DSVec2> shadowOffset;
NVRenderCachedShaderProperty<NVRenderTexture2D *> texture;
NVRenderCachedShaderProperty<QT3DSVec4> color;
NVRenderCachedShaderProperty<QT3DSVec4> shadowColor;
};
struct Q3DSDistanceFieldMesh
{
NVRenderAttribLayout *attribLayout = nullptr;
NVRenderVertexBuffer *vertexBuffer = nullptr;
NVRenderIndexBuffer *indexBuffer = nullptr;
NVRenderInputAssembler *inputAssembler = nullptr;
};
class Q3DSDistanceFieldRenderer : public ITextRenderer
{
public:
Q3DSDistanceFieldRenderer(NVFoundationBase &foundation);
~Q3DSDistanceFieldRenderer() override;
QHash<Q3DSDistanceFieldGlyphCache::TextureInfo *, GlyphInfo> buildGlyphsPerTexture(
const SText &textInfo);
void buildShaders();
Q3DSDistanceFieldMesh buildMesh(const GlyphInfo &glyphInfo, bool shadow);
void renderMesh(NVRenderInputAssembler *inputAssembler, NVRenderTexture2D *texture,
const QT3DSMat44 &mvp, QT3DSI32 textureWidth, QT3DSI32 textureHeight,
QT3DSF32 fontScale, QT3DSVec4 color);
void renderMeshWithDropShadow(NVRenderInputAssembler *inputAssembler,
NVRenderTexture2D *texture, const QT3DSMat44 &mvp,
QT3DSI32 textureWidth, QT3DSI32 textureHeight,
QT3DSF32 fontScale, QT3DSVec2 shadowOffset,
QT3DSVec4 color, QT3DSVec4 shadowColor);
void renderText(SText &text, const QT3DSMat44 &mvp);
void renderTextDepth(SText &text, const QT3DSMat44 &mvp);
void setContext(IQt3DSRenderContext &context);
bool checkAndBuildGlyphs(SText &text);
QT3DS_IMPLEMENT_REF_COUNT_ADDREF_RELEASE_OVERRIDE(m_foundation.getAllocator())
void AddSystemFontDirectory(const char8_t *dir) override;
void AddProjectFontDirectory(const char8_t *dir) override;
void ClearProjectFontDirectories() override;
ITextRenderer &GetTextRenderer(NVRenderContext &) override;
void EndFrame() override;
// Unused methods:
void PreloadFonts() override;
void BeginPreloadFonts(IThreadPool &, IPerfTimer &) override;
void EndPreloadFonts() override;
void ReloadFonts() override;
NVConstDataRef<SRendererFontEntry> GetProjectFontList() override;
Option<CRegisteredString> GetFontNameForFont(CRegisteredString) override;
Option<CRegisteredString> GetFontNameForFont(const char8_t *) override;
STextDimensions MeasureText(const STextRenderInfo &, QT3DSF32,
const char8_t *) override;
STextTextureDetails RenderText(const STextRenderInfo &,
NVRenderTexture2D &) override;
STextTextureDetails RenderText(const STextRenderInfo &, NVRenderPathFontItem &,
NVRenderPathFontSpecification &) override;
SRenderTextureAtlasDetails RenderText(const STextRenderInfo &) override;
void BeginFrame() override;
QT3DSI32 CreateTextureAtlas() override;
STextTextureAtlasEntryDetails RenderAtlasEntry(QT3DSU32, NVRenderTexture2D &) override;
private:
IQt3DSRenderContext *m_context = nullptr;
QHash<size_t, QHash<Q3DSDistanceFieldGlyphCache::TextureInfo *, GlyphInfo>> m_glyphCache;
QHash<size_t, Q3DSDistanceFieldMesh> m_meshCache;
Q3DSFontDatabase m_fontDatabase;
Q3DSDistanceFieldGlyphCacheManager m_glyphCacheManager;
Q3DSDistanceFieldShader m_shader;
Q3DSDistanceFieldDropShadowShader m_dropShadowShader;
QVector<size_t> m_renderedGlyphs;
QStringList m_systemDirs;
QStringList m_projectDirs;
qreal m_pixelRatio = 0.0;
NVFoundationBase &m_foundation;
volatile QT3DSI32 mRefCount = 0;
};
}
}
#endif // Qt version check
#endif // QT3DSDISTANCEFIELDRENDERER_H
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