Cc: <mesa-sta...@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.pho...@gmail.com>
---
src/mesa/main/glformats.c | 37 +++++++++++++++++++++++++++++++++++++
src/mesa/main/glformats.h | 3 +++
2 files changed, 40 insertions(+)
diff --git a/src/mesa/main/glformats.c b/src/mesa/main/glformats.c
index 9bb341c..05a3842 100644
--- a/src/mesa/main/glformats.c
+++ b/src/mesa/main/glformats.c
@@ -355,6 +355,43 @@ _mesa_bytes_per_vertex_attrib(GLint comps, GLenum type)
}
}
+/**
+ * Test if the given format is a SNORM (signed-normalized) format.
+ */
+GLboolean
+_mesa_is_enum_format_snorm(GLenum format)
+{
+ switch (format) {
+ /* signed, normalized texture formats */
+ case GL_RED_SNORM:
+ case GL_R8_SNORM:
+ case GL_R16_SNORM:
+ case GL_RG_SNORM:
+ case GL_RG8_SNORM:
+ case GL_RG16_SNORM:
+ case GL_RGB_SNORM:
+ case GL_RGB8_SNORM:
+ case GL_RGB16_SNORM:
+ case GL_RGBA_SNORM:
+ case GL_RGBA8_SNORM:
+ case GL_RGBA16_SNORM:
+ case GL_ALPHA_SNORM:
+ case GL_ALPHA8_SNORM:
+ case GL_ALPHA16_SNORM:
+ case GL_LUMINANCE_SNORM:
+ case GL_LUMINANCE8_SNORM:
+ case GL_LUMINANCE16_SNORM:
+ case GL_LUMINANCE_ALPHA_SNORM:
+ case GL_LUMINANCE8_ALPHA8_SNORM:
+ case GL_LUMINANCE16_ALPHA16_SNORM:
+ case GL_INTENSITY_SNORM:
+ case GL_INTENSITY8_SNORM:
+ case GL_INTENSITY16_SNORM:
+ return GL_TRUE;
+ default:
+ return GL_FALSE;
+ }
+}
/**
* Test if the given format is an integer (non-normalized) format.
diff --git a/src/mesa/main/glformats.h b/src/mesa/main/glformats.h
index 5c3b2e3..d4856e5 100644
--- a/src/mesa/main/glformats.h
+++ b/src/mesa/main/glformats.h
@@ -60,6 +60,9 @@ extern GLboolean
_mesa_is_type_unsigned(GLenum type);
extern GLboolean
+_mesa_is_enum_format_snorm(GLenum format);
+
+extern GLboolean
_mesa_is_enum_format_integer(GLenum format);
extern GLboolean
--
1.8.3.1
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