isle-portable/miniwin/src/internal/d3drmrenderer.h

#pragma once

#include "miniwin/d3drm.h"

#include <SDL3/SDL.h>

#define NO_TEXTURE_ID 0xffffffff

struct TexCoord {
	float u, v;
};

struct PositionColorVertex {
	D3DVECTOR position;
	D3DVECTOR normals;
	SDL_Color colors;
	Uint32 texId;
	TexCoord texCoord;
	float shininess;
};
static_assert(sizeof(PositionColorVertex) == 44);

struct FColor {
	float r, g, b, a;
};

struct SceneLight {
	FColor color;
	D3DVECTOR position;
	float positional = 0.f; // position is valid if 1.f
	D3DVECTOR direction;
	float directional = 0.f; // direction is valid if 1.f
};
static_assert(sizeof(SceneLight) == 48);

class Direct3DRMRenderer : public IDirect3DDevice2 {
public:
	virtual void SetBackbuffer(SDL_Surface* backbuffer) = 0;
	virtual void PushVertices(const PositionColorVertex* vertices, size_t count) = 0;
	virtual void PushLights(const SceneLight* vertices, size_t count) = 0;
	virtual void SetProjection(D3DRMMATRIX4D perspective, D3DVALUE front, D3DVALUE back) = 0;
	virtual Uint32 GetTextureId(IDirect3DRMTexture* texture) = 0;
	virtual DWORD GetWidth() = 0;
	virtual DWORD GetHeight() = 0;
	virtual void GetDesc(D3DDEVICEDESC* halDesc, D3DDEVICEDESC* helDesc) = 0;
	virtual const char* GetName() = 0;
	virtual HRESULT Render() = 0;
};