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#pragma once
#include "config/types.h"
#include "lib/glArrays.h"
#include "program.h"
#include <gfx/models/texture.h>
#include <glm/vec2.hpp>
#include <span>
#include <vector>
class SceneProvider;
class Camera;
class ShadowMapper {
public:
explicit ShadowMapper(const TextureAbsCoord & size);
static constexpr std::size_t SHADOW_BANDS {4};
using Definitions = std::vector<glm::mat4x4>;
[[nodiscard]] Definitions update(const SceneProvider &, const Direction3D & direction, const Camera &) const;
class ShadowProgram : public Program {
public:
explicit ShadowProgram(const Shader & vs);
explicit ShadowProgram(const Shader & vs, const Shader & gs, const Shader & fs);
void setView(const std::span<const glm::mat4>, const GlobalPosition3D) const;
void use() const;
private:
RequiredUniformLocation viewProjectionLoc {*this, "viewProjection"};
RequiredUniformLocation viewProjectionsLoc {*this, "viewProjections"};
RequiredUniformLocation viewPointLoc {*this, "viewPoint"};
};
class DynamicPoint : public ShadowProgram {
public:
DynamicPoint();
void use(const Location &) const;
void setModel(const Location &) const;
private:
RequiredUniformLocation modelLoc {*this, "model"};
RequiredUniformLocation modelPosLoc {*this, "modelPos"};
};
ShadowProgram landmess, dynamicPointInst, dynamicPointInstWithTextures;
DynamicPoint dynamicPoint;
// NOLINTNEXTLINE(hicpp-explicit-conversions)
operator GLuint() const
{
return depthMap;
}
private:
[[nodiscard]] static std::vector<std::array<RelativePosition3D, 4>> getBandViewExtents(
const Camera &, const glm::mat4 & lightView);
glFrameBuffer depthMapFBO;
glTexture depthMap;
TextureAbsCoord size;
};
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