OgcVideoDriver.h

/****************************************************************************
 * Platform Abstraction Layer (OGC driver)
 * Daryl Borth 2026
 * OgcVideoDriver.h
 ***************************************************************************/
#pragma once
 
#include <gccore.h>
#include "../VideoDriver.h"

class OgcVideoDriver : public VideoDriver
{
    public:
        OgcVideoDriver();
        ~OgcVideoDriver() override;
 
        void init(int width, int height) override;
        void shutdown() override;
        void render() override;
        void clearScreen(const PixelColor& color) override;
 
        int getScreenWidth() const override { return screenWidth; }
        int getScreenHeight() const override { return screenHeight; }
        int getRefreshRate() const override { return vmode && (vmode->viTVMode >> 2) == VI_PAL ? 50 : 60; }
        float getDeltaTime() const override { return vmode && (vmode->viTVMode >> 2) == VI_PAL ? (1.0f / 50.0f) : (1.0f / 60.0f); }
        uint32_t getFrameTimer() override { return frameTimer; }
 
        ImageRenderer* getImageRenderer() override { return imageRenderer; }
        GlyphRenderer* getGlyphRenderer() override { return glyphRenderer; }
 
    private:
        void resetVideoMenu();
        int screenWidth = 0;
        int screenHeight = 0;
        uint32_t frameTimer = 0;
        uint32_t* xfb[2] = { nullptr, nullptr };
        int whichfb = 0;
        GXRModeObj* vmode = nullptr;
        void* gp_fifo = nullptr;
 
        ImageRenderer* imageRenderer = nullptr;
        GlyphRenderer* glyphRenderer = nullptr;
};

class OgcImageRenderer : public ImageRenderer
{
    public:
        void * createTexture(int width, int height) override;
        void loadTextureData(void * texture, const uint8_t * rgba, int width, int height) override;
        void destroyTexture(void * texture) override;
        void drawTexture(void * texture, float xpos, float ypos, uint16_t width, uint16_t height, float degrees, float scaleX, float scaleY, uint8_t alpha) override;
        void drawRectangle(float x, float y, float width, float height, PixelColor color) override;
        void drawMesh(const MeshVertex* vertices, size_t count) override;
        void* createMesh(const MeshVertex* vertices, size_t count) override;
        void destroyMesh(void* mesh) override;
        void drawMeshInstance(void* mesh, float x, float y, float scaleX, float scaleY) override;
};

void OgcFreeRetiredMeshes();

class OgcGlyphRenderer : public GlyphRenderer {
    private:
        uint8_t vertexIndex;
 
    public:
        OgcGlyphRenderer(uint8_t vtxFmtIndex = GX_VTXFMT1);
        ~OgcGlyphRenderer() override;
 
        void* createTexture(uint16_t width, uint16_t height) override;
        void loadTextureData(void* texture, FT_Bitmap* bitmap) override;
        void destroyTexture(void* texture) override;
 
        void drawQuad(void* texture, int16_t screenX, int16_t screenY, uint16_t width, uint16_t height, const PixelColor& color) override;
        void drawFeature(int16_t screenX, int16_t screenY, uint16_t width, uint16_t height, const PixelColor& color) override;

        void setVertexFormat(uint8_t vtxFmtIndex);
};