From 840c8745518b92303d40f6834e9c616587242231 Mon Sep 17 00:00:00 2001 From: marha Date: Mon, 17 Dec 2012 11:51:13 +0100 Subject: libXft pixman mesa git update 17 dec 2012 libXft: 835cd2a6cb4aa8f89e6e7dead66483643a6e7ee8 pixman: 526dc06e5694172abf979c03a5cf530207fe2d27 mesa: 1358f3a905448f6fb546aba951e317f743a83c76 --- mesalib/src/mesa/main/glformats.c | 42 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) (limited to 'mesalib/src/mesa/main/glformats.c') diff --git a/mesalib/src/mesa/main/glformats.c b/mesalib/src/mesa/main/glformats.c index fefa9c441..f33a0503d 100644 --- a/mesalib/src/mesa/main/glformats.c +++ b/mesalib/src/mesa/main/glformats.c @@ -307,6 +307,48 @@ _mesa_bytes_per_pixel(GLenum format, GLenum type) } +/** + * Get the number of bytes for a vertex attrib with the given number of + * components and type. + * + * \param comps number of components. + * \param type data type. + * + * \return bytes per attribute, or -1 if a bad comps/type combination was given. + */ +GLint +_mesa_bytes_per_vertex_attrib(GLint comps, GLenum type) +{ + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + return comps * sizeof(GLubyte); + case GL_SHORT: + case GL_UNSIGNED_SHORT: + return comps * sizeof(GLshort); + case GL_INT: + case GL_UNSIGNED_INT: + return comps * sizeof(GLint); + case GL_FLOAT: + return comps * sizeof(GLfloat); + case GL_HALF_FLOAT_ARB: + return comps * sizeof(GLhalfARB); + case GL_DOUBLE: + return comps * sizeof(GLdouble); + case GL_FIXED: + return comps * sizeof(GLfixed); + case GL_INT_2_10_10_10_REV: + case GL_UNSIGNED_INT_2_10_10_10_REV: + if (comps == 4) + return sizeof(GLuint); + else + return -1; + default: + return -1; + } +} + + /** * Test if the given format is an integer (non-normalized) format. */ -- cgit v1.2.3