isle-portable/miniwin/src/internal/d3drmrenderer_opengl1.h
2025-06-17 03:47:23 +02:00

87 lines
2.4 KiB
C++

#pragma once
#include "d3drmrenderer.h"
#include "d3drmtexture_impl.h"
#include "ddraw_impl.h"
#include <GL/gl.h>
#include <SDL3/SDL.h>
#include <vector>
DEFINE_GUID(OpenGL1_GUID, 0x682656F3, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03);
struct GLTextureCacheEntry {
IDirect3DRMTexture* texture;
Uint32 version;
GLuint glTextureId;
};
struct GLMeshCacheEntry {
const MeshGroup* meshGroup;
int version;
bool flat;
// non-VBO cache
std::vector<D3DVECTOR> positions;
std::vector<D3DVECTOR> normals;
std::vector<TexCoord> texcoords;
std::vector<uint16_t> indices;
// VBO cache
GLuint vboPositions;
GLuint vboNormals;
GLuint vboTexcoords;
GLuint ibo;
};
class OpenGL1Renderer : public Direct3DRMRenderer {
public:
static Direct3DRMRenderer* Create(DWORD width, DWORD height);
OpenGL1Renderer(DWORD width, DWORD height, SDL_GLContext context, GLuint fbo, GLuint colorTex, GLuint depthRb);
~OpenGL1Renderer() override;
void PushLights(const SceneLight* lightsArray, size_t count) override;
void SetProjection(const D3DRMMATRIX4D& projection, D3DVALUE front, D3DVALUE back) override;
void SetFrustumPlanes(const Plane* frustumPlanes) override;
Uint32 GetTextureId(IDirect3DRMTexture* texture) override;
Uint32 GetMeshId(IDirect3DRMMesh* mesh, const MeshGroup* meshGroup) override;
DWORD GetWidth() override;
DWORD GetHeight() override;
void GetDesc(D3DDEVICEDESC* halDesc, D3DDEVICEDESC* helDesc) override;
const char* GetName() override;
HRESULT BeginFrame() override;
void EnableTransparency() override;
void SubmitDraw(
DWORD meshId,
const D3DRMMATRIX4D& modelViewMatrix,
const Matrix3x3& normalMatrix,
const Appearance& appearance
) override;
HRESULT FinalizeFrame() override;
private:
void AddTextureDestroyCallback(Uint32 id, IDirect3DRMTexture* texture);
void AddMeshDestroyCallback(Uint32 id, IDirect3DRMMesh* mesh);
std::vector<GLTextureCacheEntry> m_textures;
std::vector<GLMeshCacheEntry> m_meshs;
D3DRMMATRIX4D m_projection;
SDL_Surface* m_renderedImage;
DWORD m_width, m_height;
bool m_useVBOs;
std::vector<SceneLight> m_lights;
SDL_GLContext m_context;
GLuint m_fbo;
GLuint m_colorTex;
GLuint m_depthRb;
};
inline static void OpenGL1Renderer_EnumDevice(LPD3DENUMDEVICESCALLBACK cb, void* ctx)
{
Direct3DRMRenderer* device = OpenGL1Renderer::Create(640, 480);
if (device) {
EnumDevice(cb, ctx, device, OpenGL1_GUID);
delete device;
}
}