diff options
author | Brian Paul <[email protected]> | 2009-07-30 09:24:01 -0600 |
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committer | Brian Paul <[email protected]> | 2009-07-30 09:24:01 -0600 |
commit | c156eeb682d673e571c1798ff21e183ad4114fea (patch) | |
tree | 86aa388a530cfc5843a2592d676dc530c54f1530 /src/mesa/main/teximage.c | |
parent | 9c9a9abd7b953ec9b6cfc52c2f6981c5d38b1691 (diff) |
mesa: simplify _mesa_select_tex_image()
Diffstat (limited to 'src/mesa/main/teximage.c')
-rw-r--r-- | src/mesa/main/teximage.c | 64 |
1 files changed, 9 insertions, 55 deletions
diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c index 6e9073fa9f4..ae60b46d8a9 100644 --- a/src/mesa/main/teximage.c +++ b/src/mesa/main/teximage.c @@ -841,74 +841,28 @@ _mesa_select_tex_object(GLcontext *ctx, const struct gl_texture_unit *texUnit, /** - * Get the texture image struct which corresponds to target and level - * of the given texture unit. + * Get a texture image pointer from a texture object, given a texture + * target and mipmap level. The target and level parameters should + * have already been error-checked. * * \param ctx GL context. * \param texObj texture unit. * \param target texture target. * \param level image level. * - * \return pointer to the texture image structure on success, or NULL on failure. - * - * \sa gl_texture_unit. + * \return pointer to the texture image structure, or NULL on failure. */ struct gl_texture_image * _mesa_select_tex_image(GLcontext *ctx, const struct gl_texture_object *texObj, GLenum target, GLint level) { - ASSERT(texObj); - - if (level < 0 || level >= MAX_TEXTURE_LEVELS) - return NULL; - - /* XXX simplify this with _mesa_tex_target_to_face() */ - switch (target) { - case GL_TEXTURE_1D: - case GL_PROXY_TEXTURE_1D: - case GL_TEXTURE_2D: - case GL_PROXY_TEXTURE_2D: - case GL_TEXTURE_3D: - case GL_PROXY_TEXTURE_3D: - return texObj->Image[0][level]; - - case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: - case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: - case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: - case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: - case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: - case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: - if (ctx->Extensions.ARB_texture_cube_map) { - GLuint face = ((GLuint) target - - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X); - return texObj->Image[face][level]; - } - else - return NULL; - - case GL_PROXY_TEXTURE_CUBE_MAP_ARB: - if (ctx->Extensions.ARB_texture_cube_map) - return texObj->Image[0][level]; - else - return NULL; - - case GL_TEXTURE_RECTANGLE_NV: - case GL_PROXY_TEXTURE_RECTANGLE_NV: - if (ctx->Extensions.NV_texture_rectangle && level == 0) - return texObj->Image[0][level]; - else - return NULL; + const GLuint face = _mesa_tex_target_to_face(target); - case GL_TEXTURE_1D_ARRAY_EXT: - case GL_PROXY_TEXTURE_1D_ARRAY_EXT: - case GL_TEXTURE_2D_ARRAY_EXT: - case GL_PROXY_TEXTURE_2D_ARRAY_EXT: - return (ctx->Extensions.MESA_texture_array) - ? texObj->Image[0][level] : NULL; + ASSERT(texObj); + ASSERT(level >= 0); + ASSERT(level < MAX_TEXTURE_LEVELS); - default: - return NULL; - } + return texObj->Image[face][level]; } |