diff options
Diffstat (limited to 'mesalib/src/mesa/main/glformats.c')
| -rw-r--r-- | mesalib/src/mesa/main/glformats.c | 83 |
1 files changed, 68 insertions, 15 deletions
diff --git a/mesalib/src/mesa/main/glformats.c b/mesalib/src/mesa/main/glformats.c index f33a0503d..ff56ffad0 100644 --- a/mesalib/src/mesa/main/glformats.c +++ b/mesalib/src/mesa/main/glformats.c @@ -271,7 +271,8 @@ _mesa_bytes_per_pixel(GLenum format, GLenum type) case GL_UNSIGNED_INT_10_10_10_2: case GL_UNSIGNED_INT_2_10_10_10_REV: if (format == GL_RGBA || format == GL_BGRA || format == GL_ABGR_EXT || - format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT) + format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT || + format == GL_RGB) return sizeof(GLuint); else return -1; @@ -353,21 +354,9 @@ _mesa_bytes_per_vertex_attrib(GLint comps, GLenum type) * Test if the given format is an integer (non-normalized) format. */ GLboolean -_mesa_is_enum_format_integer(GLenum format) +_mesa_is_enum_format_unsigned_int(GLenum format) { switch (format) { - /* generic integer formats */ - case GL_RED_INTEGER_EXT: - case GL_GREEN_INTEGER_EXT: - case GL_BLUE_INTEGER_EXT: - case GL_ALPHA_INTEGER_EXT: - case GL_RGB_INTEGER_EXT: - case GL_RGBA_INTEGER_EXT: - case GL_BGR_INTEGER_EXT: - case GL_BGRA_INTEGER_EXT: - case GL_LUMINANCE_INTEGER_EXT: - case GL_LUMINANCE_ALPHA_INTEGER_EXT: - case GL_RG_INTEGER: /* specific integer formats */ case GL_RGBA32UI_EXT: case GL_RGB32UI_EXT: @@ -393,6 +382,34 @@ _mesa_is_enum_format_integer(GLenum format) case GL_INTENSITY8UI_EXT: case GL_LUMINANCE8UI_EXT: case GL_LUMINANCE_ALPHA8UI_EXT: + case GL_RGB10_A2UI: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Test if the given format is an integer (non-normalized) format. + */ +GLboolean +_mesa_is_enum_format_signed_int(GLenum format) +{ + switch (format) { + /* generic integer formats */ + case GL_RED_INTEGER_EXT: + case GL_GREEN_INTEGER_EXT: + case GL_BLUE_INTEGER_EXT: + case GL_ALPHA_INTEGER_EXT: + case GL_RGB_INTEGER_EXT: + case GL_RGBA_INTEGER_EXT: + case GL_BGR_INTEGER_EXT: + case GL_BGRA_INTEGER_EXT: + case GL_LUMINANCE_INTEGER_EXT: + case GL_LUMINANCE_ALPHA_INTEGER_EXT: + case GL_RG_INTEGER: + /* specific integer formats */ case GL_RGBA32I_EXT: case GL_RGB32I_EXT: case GL_RG32I: @@ -417,7 +434,6 @@ _mesa_is_enum_format_integer(GLenum format) case GL_INTENSITY8I_EXT: case GL_LUMINANCE8I_EXT: case GL_LUMINANCE_ALPHA8I_EXT: - case GL_RGB10_A2UI: return GL_TRUE; default: return GL_FALSE; @@ -426,6 +442,17 @@ _mesa_is_enum_format_integer(GLenum format) /** + * Test if the given format is an integer (non-normalized) format. + */ +GLboolean +_mesa_is_enum_format_integer(GLenum format) +{ + return _mesa_is_enum_format_unsigned_int(format) || + _mesa_is_enum_format_signed_int(format); +} + + +/** * Test if the given type is an integer (non-normalized) format. */ GLboolean @@ -1032,6 +1059,32 @@ _mesa_base_format_has_channel(GLenum base_format, GLenum pname) /** + * Returns the number of channels/components for a base format. + */ +GLint +_mesa_base_format_component_count(GLenum base_format) +{ + switch (base_format) { + case GL_RED: + case GL_ALPHA: + case GL_INTENSITY: + case GL_DEPTH_COMPONENT: + return 1; + case GL_RG: + case GL_LUMINANCE_ALPHA: + case GL_DEPTH_STENCIL: + return 2; + case GL_RGB: + return 3; + case GL_RGBA: + return 4; + default: + return -1; + } +} + + +/** * If format is a generic compressed format, return the corresponding * non-compressed format. For other formats, return the format as-is. */ |