From b52ce6341f877a0a1cfd3c50c07eeb1c156ae89e Mon Sep 17 00:00:00 2001
From: Brian <brian.paul@tungstengraphics.com>
Date: Mon, 11 Feb 2008 09:33:28 -0700
Subject: added _mesa_tex_target_to_face()

---
 src/mesa/main/teximage.c | 20 +++++++++++++-------
 src/mesa/main/teximage.h |  5 +++++
 2 files changed, 18 insertions(+), 7 deletions(-)

diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index 09ec0d4553..5c96be9216 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -595,8 +595,12 @@ is_compressed_format(GLcontext *ctx, GLenum internalFormat)
 }
 
 
-static GLuint
-texture_face(GLenum target)
+/**
+ * For cube map faces, return a face index in [0,5].
+ * For other targets return 0;
+ */
+GLuint
+_mesa_tex_target_to_face(GLenum target)
 {
    if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB &&
        target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB)
@@ -625,6 +629,7 @@ _mesa_set_tex_image(struct gl_texture_object *tObj,
 {
    ASSERT(tObj);
    ASSERT(texImage);
+   /* XXX simplify this with _mesa_tex_target_to_face() */
    switch (target) {
       case GL_TEXTURE_1D:
       case GL_TEXTURE_2D:
@@ -828,6 +833,7 @@ _mesa_select_tex_image(GLcontext *ctx, const struct gl_texture_object *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:
@@ -2424,7 +2430,7 @@ _mesa_TexImage1D( GLenum target, GLint level, GLint internalFormat,
       struct gl_texture_unit *texUnit;
       struct gl_texture_object *texObj;
       struct gl_texture_image *texImage;
-      const GLuint face = texture_face(target);
+      const GLuint face = _mesa_tex_target_to_face(target);
 
       if (texture_error_check(ctx, target, level, internalFormat,
                               format, type, 1, postConvWidth, 1, 1, border)) {
@@ -2527,7 +2533,7 @@ _mesa_TexImage2D( GLenum target, GLint level, GLint internalFormat,
       struct gl_texture_unit *texUnit;
       struct gl_texture_object *texObj;
       struct gl_texture_image *texImage;
-      const GLuint face = texture_face(target);
+      const GLuint face = _mesa_tex_target_to_face(target);
 
       if (texture_error_check(ctx, target, level, internalFormat,
                               format, type, 2, postConvWidth, postConvHeight,
@@ -2629,7 +2635,7 @@ _mesa_TexImage3D( GLenum target, GLint level, GLint internalFormat,
       struct gl_texture_unit *texUnit;
       struct gl_texture_object *texObj;
       struct gl_texture_image *texImage;
-      const GLuint face = texture_face(target);
+      const GLuint face = _mesa_tex_target_to_face(target);
 
       if (texture_error_check(ctx, target, level, (GLint) internalFormat,
                               format, type, 3, width, height, depth, border)) {
@@ -2897,7 +2903,7 @@ _mesa_CopyTexImage1D( GLenum target, GLint level,
    struct gl_texture_object *texObj;
    struct gl_texture_image *texImage;
    GLsizei postConvWidth = width;
-   const GLuint face = texture_face(target);
+   const GLuint face = _mesa_tex_target_to_face(target);
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
@@ -2960,7 +2966,7 @@ _mesa_CopyTexImage2D( GLenum target, GLint level, GLenum internalFormat,
    struct gl_texture_object *texObj;
    struct gl_texture_image *texImage;
    GLsizei postConvWidth = width, postConvHeight = height;
-   const GLuint face = texture_face(target);
+   const GLuint face = _mesa_tex_target_to_face(target);
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
diff --git a/src/mesa/main/teximage.h b/src/mesa/main/teximage.h
index f2cad7eb2d..b718c0046d 100644
--- a/src/mesa/main/teximage.h
+++ b/src/mesa/main/teximage.h
@@ -107,6 +107,11 @@ _mesa_test_proxy_teximage(GLcontext *ctx, GLenum target, GLint level,
                          GLint width, GLint height, GLint depth, GLint border);
 
 
+extern GLuint
+_mesa_tex_target_to_face(GLenum target);
+
+
+
 /**
  * Lock a texture for updating.  See also _mesa_lock_context_textures().
  */
-- 
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