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// Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QT3DRENDER_RENDER_OPENGL_SHADERPARAMETERPACK_P_H
#define QT3DRENDER_RENDER_OPENGL_SHADERPARAMETERPACK_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QVariant>
#include <QByteArray>
#include <QOpenGLShaderProgram>
#include <Qt3DCore/qnodeid.h>
#include <Qt3DRender/private/renderlogging_p.h>
#include <Qt3DRender/private/uniform_p.h>
#include <shadervariables_p.h>
QT_BEGIN_NAMESPACE
class QOpenGLShaderProgram;
namespace Qt3DRender {
namespace Render {
namespace OpenGL {
class GraphicsContext;
struct BlockToUBO {
int m_blockIndex;
Qt3DCore::QNodeId m_bufferID;
bool m_needsUpdate;
QHash<QString, QVariant> m_updatedProperties;
};
QT3D_DECLARE_TYPEINFO_3(Qt3DRender, Render, OpenGL, BlockToUBO, Q_RELOCATABLE_TYPE)
struct BlockToSSBO {
int m_blockIndex;
int m_bindingIndex;
Qt3DCore::QNodeId m_bufferID;
};
QT3D_DECLARE_TYPEINFO_3(Qt3DRender, Render, OpenGL, BlockToSSBO, Q_PRIMITIVE_TYPE)
struct PackUniformHash
{
std::vector<int> keys;
std::vector<UniformValue> values;
PackUniformHash()
{
}
void reserve(int count)
{
keys.reserve(count);
values.reserve(count);
}
size_t size() const
{
return keys.size();
}
inline int indexForKey(int key) const
{
const auto b = keys.cbegin();
const auto e = keys.cend();
const auto it = std::find(b, e, key);
if (it == e)
return -1;
return std::distance(b, it);
}
void insert(int key, const UniformValue &value)
{
const int idx = indexForKey(key);
if (idx != -1) {
values[idx] = value;
} else {
keys.push_back(key);
values.push_back(value);
}
}
void insert(int key, UniformValue &&value)
{
const int idx = indexForKey(key);
if (idx != -1) {
values[idx] = std::move(value);
} else {
keys.push_back(key);
values.push_back(std::move(value));
}
}
UniformValue value(int key) const noexcept
{
const int idx = indexForKey(key);
if (idx != -1)
return values.at(idx);
return UniformValue();
}
UniformValue& value(int key)
{
const int idx = indexForKey(key);
if (idx != -1)
return values[idx];
insert(key, UniformValue());
return value(key);
}
template<typename F>
void apply(int key, F func) const noexcept
{
const int idx = indexForKey(key);
if (idx != -1)
func(values[idx]);
}
void erase(int idx)
{
keys.erase(keys.begin() + idx);
values.erase(values.begin() + idx);
}
bool contains(int key) const noexcept
{
const auto b = keys.cbegin();
const auto e = keys.cend();
return std::find(b, e, key) != e;
}
};
class Q_AUTOTEST_EXPORT ShaderParameterPack
{
public:
~ShaderParameterPack();
void reserve(int uniformCount);
void setUniform(const int glslNameId, const UniformValue &val);
void setTexture(const int glslNameId, int uniformArrayIndex, Qt3DCore::QNodeId id);
void setImage(const int glslNameId, int uniformArrayIndex, Qt3DCore::QNodeId id);
void setUniformBuffer(BlockToUBO blockToUBO);
void setShaderStorageBuffer(BlockToSSBO blockToSSBO);
void setSubmissionUniformIndex(const int shaderUniformIndex);
inline PackUniformHash &uniforms() { return m_uniforms; }
inline const PackUniformHash &uniforms() const { return m_uniforms; }
UniformValue uniform(const int glslNameId) const { return m_uniforms.value(glslNameId); }
struct NamedResource
{
enum Type {
Texture = 0,
Image
};
NamedResource() {}
NamedResource(const int glslNameId, Qt3DCore::QNodeId texId,
int uniformArrayIndex, Type type)
: glslNameId(glslNameId)
, nodeId(texId)
, uniformArrayIndex(uniformArrayIndex)
, type(type)
{ }
int glslNameId;
Qt3DCore::QNodeId nodeId;
int uniformArrayIndex;
Type type;
bool operator==(const NamedResource &other) const
{
return glslNameId == other.glslNameId &&
nodeId == other.nodeId &&
uniformArrayIndex == other.uniformArrayIndex &&
type == other.type;
}
bool operator!=(const NamedResource &other) const
{
return !(*this == other);
}
};
inline const std::vector<NamedResource> &textures() const { return m_textures; }
inline const std::vector<NamedResource> &images() const { return m_images; }
inline const std::vector<BlockToUBO> &uniformBuffers() const { return m_uniformBuffers; }
inline const std::vector<BlockToSSBO> &shaderStorageBuffers() const { return m_shaderStorageBuffers; }
inline const std::vector<int> &submissionUniformIndices() const { return m_submissionUniformIndices; }
private:
PackUniformHash m_uniforms;
std::vector<NamedResource> m_textures;
std::vector<NamedResource> m_images;
std::vector<BlockToUBO> m_uniformBuffers;
std::vector<BlockToSSBO> m_shaderStorageBuffers;
std::vector<int> m_submissionUniformIndices;
friend class RenderView;
};
QT3D_DECLARE_TYPEINFO_3(Qt3DRender, Render, OpenGL, ShaderParameterPack::NamedResource, Q_PRIMITIVE_TYPE)
} // namespace OpenGL
} // namespace Render
} // namespace Qt3DRender
QT_END_NAMESPACE
Q_DECLARE_METATYPE(Qt3DRender::Render::OpenGL::ShaderParameterPack)
#endif // QT3DRENDER_RENDER_OPENGL_SHADERPARAMETERPACK_P_H