Added a utility function to determine required texture size alignments.
TRAC #22422
Signed-off-by: Jamie Madill
Signed-off-by: Nicolas Capens
Author: Geoff Lang
git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1913 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/renderer/renderer11_utils.cpp b/src/libGLESv2/renderer/renderer11_utils.cpp
index 585dfe7..9f63dce 100644
--- a/src/libGLESv2/renderer/renderer11_utils.cpp
+++ b/src/libGLESv2/renderer/renderer11_utils.cpp
@@ -571,6 +571,40 @@
}
}
+unsigned int GetTextureFormatDimensionAlignment(DXGI_FORMAT format)
+{
+ switch (format)
+ {
+ case DXGI_FORMAT_BC1_TYPELESS:
+ case DXGI_FORMAT_BC1_UNORM:
+ case DXGI_FORMAT_BC1_UNORM_SRGB:
+ case DXGI_FORMAT_BC4_SNORM:
+ case DXGI_FORMAT_BC4_TYPELESS:
+ case DXGI_FORMAT_BC4_UNORM:
+ case DXGI_FORMAT_BC2_TYPELESS:
+ case DXGI_FORMAT_BC2_UNORM:
+ case DXGI_FORMAT_BC2_UNORM_SRGB:
+ case DXGI_FORMAT_BC3_TYPELESS:
+ case DXGI_FORMAT_BC3_UNORM:
+ case DXGI_FORMAT_BC3_UNORM_SRGB:
+ case DXGI_FORMAT_BC5_SNORM:
+ case DXGI_FORMAT_BC5_TYPELESS:
+ case DXGI_FORMAT_BC5_UNORM:
+ case DXGI_FORMAT_BC6H_SF16:
+ case DXGI_FORMAT_BC6H_TYPELESS:
+ case DXGI_FORMAT_BC6H_UF16:
+ case DXGI_FORMAT_BC7_TYPELESS:
+ case DXGI_FORMAT_BC7_UNORM:
+ case DXGI_FORMAT_BC7_UNORM_SRGB:
+ return 4;
+ case DXGI_FORMAT_UNKNOWN:
+ UNREACHABLE();
+ return 1;
+ default:
+ return 1;
+ }
+}
+
bool IsDepthStencilFormat(DXGI_FORMAT format)
{
switch (format)
diff --git a/src/libGLESv2/renderer/renderer11_utils.h b/src/libGLESv2/renderer/renderer11_utils.h
index 8c9f3b3..0fbff21 100644
--- a/src/libGLESv2/renderer/renderer11_utils.h
+++ b/src/libGLESv2/renderer/renderer11_utils.h
@@ -71,6 +71,8 @@
size_t ComputePixelSizeBits(DXGI_FORMAT format);
size_t ComputeBlockSizeBits(DXGI_FORMAT format);
+unsigned int GetTextureFormatDimensionAlignment(DXGI_FORMAT format);
+
bool IsDepthStencilFormat(DXGI_FORMAT format);
DXGI_FORMAT GetDepthTextureFormat(DXGI_FORMAT format);
DXGI_FORMAT GetDepthShaderResourceFormat(DXGI_FORMAT format);
