Fix lens flares in Mario Kart Wii.

1 files changed, 52 insertions, 0 deletions

diff --git a/Source/Core/VideoCommon/TextureDecoder_Common.cpp b/Source/Core/VideoCommon/TextureDecoder_Common.cpp
index 5f8f314a0b..a37abe6e7e 100644
--- a/Source/Core/VideoCommon/TextureDecoder_Common.cpp
+++ b/Source/Core/VideoCommon/TextureDecoder_Common.cpp
@@ -156,6 +156,58 @@ int TexDecoder_GetPaletteSize(int format)
 	}
 }
 
+// Get the "in memory" texture format of an EFB copy's format.
+// With the exception of c4/c8/c14 paletted texture formats (which are handled elsewhere)
+// this is the format the game should be using when it is drawing an EFB copy back.
+int TexDecoder_GetEfbCopyBaseFormat(int format)
+{
+	switch (format)
+	{
+	case GX_TF_I4:
+	case GX_CTF_Z4:
+	case GX_CTF_R4:
+		return GX_TF_I4;
+	case GX_TF_I8:
+	case GX_CTF_A8:
+	case GX_CTF_R8:
+	case GX_CTF_G8:
+	case GX_CTF_B8:
+	case GX_TF_Z8:
+	case GX_CTF_Z8H:
+	case GX_CTF_Z8M:
+	case GX_CTF_Z8L:
+		return GX_TF_I8;
+	case GX_TF_IA4:
+	case GX_CTF_RA4:
+		return GX_TF_IA4;
+	case GX_TF_IA8:
+	case GX_TF_Z16:
+	case GX_CTF_RA8:
+	case GX_CTF_RG8:
+	case GX_CTF_GB8:
+	case GX_CTF_Z16R:
+	case GX_CTF_Z16L:
+		return GX_TF_IA8;
+	case GX_TF_RGB565:
+		return GX_TF_RGB565;
+	case GX_TF_RGB5A3:
+		return GX_TF_RGB5A3;
+	case GX_TF_RGBA8:
+	case GX_TF_Z24X8:
+	case GX_CTF_YUVA8:
+		return GX_TF_RGBA8;
+	// These formats can't be (directly) generated by EFB copies
+	case GX_TF_C4:
+	case GX_TF_C8:
+	case GX_TF_C14X2:
+	case GX_TF_CMPR:
+	default:
+		PanicAlert("Unsupported Texture Format (%08x)! (GetEfbCopyBaseFormat)", format);
+		return format & 0xf;
+	}
+}
+
+
 void TexDecoder_SetTexFmtOverlayOptions(bool enable, bool center)
 {
 	TexFmt_Overlay_Enable = enable;