com_direct3dtexture2.c

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// Implements the IDirect3DTexture2 COM translator
// https://archive.org/details/dx7sdk-7001
 
#include "graphics_com_private.h"
#include <stdlib.h>
 
static DWORD d3dtexture2_next_texture_handle = 1;
 
DTTR_COM_QI_SELF(d3dtexture2_queryinterface, DTTR_Graphics_COM_Direct3DTexture2)
 
DTTR_COM_ADDREF(d3dtexture2_addref, DTTR_Graphics_COM_Direct3DTexture2)
 
DTTR_COM_RELEASE(d3dtexture2_release, DTTR_Graphics_COM_Direct3DTexture2)
 
static HRESULT __stdcall d3dtexture2_gethandle(
    DTTR_Graphics_COM_Direct3DTexture2 *self,
    void *device,
    DWORD *handle
) {
    if (handle) {
        *handle = d3dtexture2_next_texture_handle++;
    }
 
    return S_OK;
}
 
DTTR_COM_NOOP_HRESULT(
    d3dtexture2_palettechanged,
    DTTR_Graphics_COM_Direct3DTexture2 *self,
    DWORD start,
    DWORD count
)
 
DTTR_COM_NOOP_HRESULT(
    d3dtexture2_load,
    DTTR_Graphics_COM_Direct3DTexture2 *self,
    void *srcTexture
)
 
static DTTR_Graphics_COM_Direct3DTexture2_VT vtbl = {
    .QueryInterface = d3dtexture2_queryinterface,
    .AddRef = d3dtexture2_addref,
    .Release = d3dtexture2_release,
    .GetHandle = d3dtexture2_gethandle,
    .PaletteChanged = d3dtexture2_palettechanged,
    .Load = d3dtexture2_load,
};
 
DTTR_Graphics_COM_Direct3DTexture2 *dttr_graphics_com_create_direct3d_texture2(
    DTTR_Graphics_COM_DirectDrawSurface7 *surface
) {
    DTTR_Graphics_COM_Direct3DTexture2 *tex = malloc(
        sizeof(DTTR_Graphics_COM_Direct3DTexture2)
    );
 
    if (tex) {
        tex->vtbl = &vtbl;
        tex->surface = surface;
    }
 
    return tex;
}