diff options
| -rw-r--r-- | src/mesa/main/glformats.c | 44 | ||||
| -rw-r--r-- | src/mesa/main/glformats.h | 3 |
2 files changed, 47 insertions, 0 deletions
diff --git a/src/mesa/main/glformats.c b/src/mesa/main/glformats.c index ae97079836e..6688abe7c2c 100644 --- a/src/mesa/main/glformats.c +++ b/src/mesa/main/glformats.c @@ -1278,6 +1278,50 @@ _mesa_is_compressed_format(const struct gl_context *ctx, GLenum format) } } +/** + * Convert various unpack formats to the corresponding base format. + */ +GLenum +_mesa_unpack_format_to_base_format(GLenum format) +{ + switch(format) { + case GL_RED_INTEGER: + return GL_RED; + case GL_GREEN_INTEGER: + return GL_GREEN; + case GL_BLUE_INTEGER: + return GL_BLUE; + case GL_ALPHA_INTEGER: + return GL_ALPHA; + case GL_RG_INTEGER: + return GL_RG; + case GL_RGB_INTEGER: + return GL_RGB; + case GL_RGBA_INTEGER: + return GL_RGBA; + case GL_BGR_INTEGER: + return GL_BGR; + case GL_BGRA_INTEGER: + return GL_BGRA; + case GL_LUMINANCE_INTEGER_EXT: + return GL_LUMINANCE; + case GL_LUMINANCE_ALPHA_INTEGER_EXT: + return GL_LUMINANCE_ALPHA; + case GL_RED: + case GL_GREEN: + case GL_BLUE: + case GL_RG: + case GL_RGB: + case GL_RGBA: + case GL_BGR: + case GL_BGRA: + case GL_ALPHA: + case GL_LUMINANCE: + case GL_LUMINANCE_ALPHA: + default: + return format; + } +} /** * Convert various base formats to the cooresponding integer format. diff --git a/src/mesa/main/glformats.h b/src/mesa/main/glformats.h index 8881cb7d86b..419955a6033 100644 --- a/src/mesa/main/glformats.h +++ b/src/mesa/main/glformats.h @@ -101,6 +101,9 @@ _mesa_is_compressed_format(const struct gl_context *ctx, GLenum format); extern GLenum _mesa_base_format_to_integer_format(GLenum format); +extern GLenum +_mesa_unpack_format_to_base_format(GLenum format); + extern GLboolean _mesa_base_format_has_channel(GLenum base_format, GLenum pname); |