Moved Stars45 to StarsEx

1 files changed, 118 insertions, 0 deletions

diff --git a/StarsEx/TexCubeDX9.cpp b/StarsEx/TexCubeDX9.cpp
new file mode 100644
index 0000000..c2e5a89
--- /dev/null
+++ b/StarsEx/TexCubeDX9.cpp
@@ -0,0 +1,118 @@
+/*  Starshatter: The Open Source Project
+    Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors
+    Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
+    Copyright (c) 1997-2006, Destroyer Studios LLC.
+
+    AUTHOR:       John DiCamillo
+
+
+    OVERVIEW
+    ========
+    Direct3D Texture Cache
+*/
+
+#include "TexCubeDX9.h"
+#include "VideoDX9.h"
+#include "Bitmap.h"
+#include "Color.h"
+#include "Utils.h"
+
+// +--------------------------------------------------------------------+
+
+void  VideoDX9Error(const char* msg, HRESULT err);
+
+#ifndef RELEASE
+#define RELEASE(x) if (x) { x->Release(); x=NULL; }
+#endif
+
+// +--------------------------------------------------------------------+
+
+TexCubeDX9::TexCubeDX9(VideoDX9* v)
+: video(v), texture(0)
+{
+    d3d       = video->Direct3D();
+    d3ddevice = video->D3DDevice();
+
+    for (int i = 0; i < 6; i++) {
+        faces[i] = 0;
+        last_modified[i] = 0;
+    }
+}
+
+TexCubeDX9::~TexCubeDX9()
+{
+    RELEASE(texture);
+}
+
+// +--------------------------------------------------------------------+
+
+bool
+TexCubeDX9::LoadTexture(Bitmap* bmp, int face_index)
+{
+    if (!d3ddevice) return false;
+
+    if (faces[face_index] == bmp && last_modified[face_index] >= bmp->LastModified())
+    return true; // already loaded and hasn't been modified
+
+    HRESULT hr = D3D_OK;
+
+    // create the texture, if necessary
+    if (!texture) {
+        hr = d3ddevice->CreateCubeTexture(bmp->Width(),
+        1,                // one mip level
+        0,                // no specific usage
+        D3DFMT_A8R8G8B8,  // format matching Color::rgba
+        D3DPOOL_MANAGED,
+        &texture,
+        0);
+
+        if (FAILED(hr) || !texture) {
+            VideoDX9Error("LoadTexture - could not create cube texture", hr);
+            return false;
+        }
+    }
+
+    // lock the surface for writing
+    D3DLOCKED_RECT    locked_rect;
+    D3DCUBEMAP_FACES  face = (D3DCUBEMAP_FACES) face_index;
+    hr = texture->LockRect(face, 0, &locked_rect, 0, 0);
+
+    if (FAILED(hr)) {
+        VideoDX9Error("LoadTexture - could not lock texture surface", hr);
+        RELEASE(texture);
+        return false;
+    }
+
+    // load the bitmap into the texture surface
+    for (int i = 0; i < bmp->Height(); i++) {
+        BYTE* src = (BYTE*) (bmp->HiPixels()  + i * bmp->Width());
+        BYTE* dst = (BYTE*) locked_rect.pBits + i * locked_rect.Pitch;
+
+        CopyMemory(dst, src, bmp->Width() * sizeof(Color));
+    }
+
+    // unlock the surface
+    texture->UnlockRect(face, 0);
+
+    faces[face_index]         = bmp;
+    last_modified[face_index] = bmp->LastModified();
+
+    return true;
+}
+
+// +--------------------------------------------------------------------+
+
+IDirect3DCubeTexture9*
+TexCubeDX9::GetTexture()
+{
+    if (texture) {
+        // need to refresh anything?
+        for (int i = 0; i < 6; i++) {
+            if (faces[i] && last_modified[i] < faces[i]->LastModified()) {
+                LoadTexture(faces[i], i);
+            }
+        }
+    }
+
+    return texture;
+}