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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
*/
#ifndef INCLUDED_VCL_INC_OPENGL_ACCUMULATEDTEXTURES_H
#define INCLUDED_VCL_INC_OPENGL_ACCUMULATEDTEXTURES_H
#include <vcl/opengl/OpenGLHelper.hxx>
#include <o3tl/make_unique.hxx>
#include "opengl/texture.hxx"
#include <memory>
struct TextureDrawParameters
{
std::vector<GLfloat> maVertices;
std::vector<GLfloat> maTextureCoords;
GLint getNumberOfVertices()
{
return maVertices.size() / 2;
}
};
struct AccumulatedTexturesEntry
{
OpenGLTexture maTexture;
std::unordered_map<SalColor, TextureDrawParameters> maColorTextureDrawParametersMap;
AccumulatedTexturesEntry(const OpenGLTexture& rTexture)
: maTexture(rTexture)
{}
void insert(const OpenGLTexture& rTexture, const SalColor& aColor, const SalTwoRect& r2Rect)
{
TextureDrawParameters& aDrawParameters = maColorTextureDrawParametersMap[aColor];
rTexture.FillCoords<GL_TRIANGLES>(aDrawParameters.maTextureCoords, r2Rect, false);
GLfloat nX1 = r2Rect.mnDestX;
GLfloat nY1 = r2Rect.mnDestY;
GLfloat nX2 = r2Rect.mnDestX + r2Rect.mnDestWidth;
GLfloat nY2 = r2Rect.mnDestY + r2Rect.mnDestHeight;
auto& rVertices = aDrawParameters.maVertices;
rVertices.push_back(nX1);
rVertices.push_back(nY1);
rVertices.push_back(nX2);
rVertices.push_back(nY1);
rVertices.push_back(nX1);
rVertices.push_back(nY2);
rVertices.push_back(nX1);
rVertices.push_back(nY2);
rVertices.push_back(nX2);
rVertices.push_back(nY1);
rVertices.push_back(nX2);
rVertices.push_back(nY2);
}
};
class AccumulatedTextures
{
private:
typedef std::unordered_map<GLuint, std::unique_ptr<AccumulatedTexturesEntry>> AccumulatedTexturesMap;
AccumulatedTexturesMap maEntries;
public:
AccumulatedTextures()
{}
bool empty()
{
return maEntries.empty();
}
void clear()
{
maEntries.clear();
}
void insert(OpenGLTexture& rTexture, const SalColor& aColor, const SalTwoRect& r2Rect)
{
GLuint nTextureId = rTexture.Id();
if (maEntries.find(nTextureId) == maEntries.end())
{
OpenGLTexture aWholeTexture(rTexture.GetWholeTexture());
maEntries[nTextureId] = o3tl::make_unique<AccumulatedTexturesEntry>(aWholeTexture);
}
std::unique_ptr<AccumulatedTexturesEntry>& rEntry = maEntries[nTextureId];
rEntry->insert(rTexture, aColor, r2Rect);
}
AccumulatedTexturesMap& getAccumulatedTexturesMap()
{
return maEntries;
}
};
#endif // INCLUDED_VCL_INC_OPENGL_TEXTURE_H
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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