mesa: get_current_tex_unit() helper function

1 files changed, 35 insertions, 23 deletions

diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index 109fe0e0521..6348ec09f79 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -776,6 +776,18 @@ _mesa_is_proxy_texture(GLenum target)
 
 
 /**
+ * Return pointer to current texture unit.
+ * This the texture unit set by glActiveTexture(), not glClientActiveTexture().
+ */
+static INLINE struct gl_texture_unit *
+get_current_tex_unit(GLcontext *ctx)
+{
+   ASSERT(ctx->Texture.CurrentUnit < Elements(ctx->Texture.Unit));
+   return &(ctx->Texture.Unit[ctx->Texture.CurrentUnit]);
+}
+
+
+/**
  * Get the texture object that corresponds to the target of the given texture unit.
  *
  * \param ctx GL context.
@@ -2250,7 +2262,7 @@ getteximage_error_check(GLcontext *ctx, GLenum target, GLint level,
    }
 
 
-   texUnit = &(ctx->Texture.Unit[ctx->Texture.CurrentUnit]);
+   texUnit = get_current_tex_unit(ctx);
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
    texImage = _mesa_select_tex_image(ctx, texObj, target, level);
    if (!texImage) {
@@ -2330,7 +2342,7 @@ _mesa_GetTexImage( GLenum target, GLint level, GLenum format,
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
-   texUnit = &(ctx->Texture.Unit[ctx->Texture.CurrentUnit]);
+   texUnit = get_current_tex_unit(ctx);
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
    if (!texObj || _mesa_is_proxy_texture(target)) {
       _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(target)");
@@ -2497,7 +2509,7 @@ _mesa_TexImage1D( GLenum target, GLint level, GLint internalFormat,
       if (ctx->NewState & _MESA_NEW_TRANSFER_STATE)
 	 _mesa_update_state(ctx);
 
-      texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+      texUnit = get_current_tex_unit(ctx);
       texObj = _mesa_select_tex_object(ctx, texUnit, target);
       _mesa_lock_texture(ctx, texObj);
       {
@@ -2605,7 +2617,7 @@ _mesa_TexImage2D( GLenum target, GLint level, GLint internalFormat,
       if (ctx->NewState & _MESA_NEW_TRANSFER_STATE)
 	 _mesa_update_state(ctx);
 
-      texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+      texUnit = get_current_tex_unit(ctx);
       texObj = _mesa_select_tex_object(ctx, texUnit, target);
       _mesa_lock_texture(ctx, texObj);
       {
@@ -2708,7 +2720,7 @@ _mesa_TexImage3D( GLenum target, GLint level, GLint internalFormat,
       if (ctx->NewState & _MESA_NEW_TRANSFER_STATE)
 	 _mesa_update_state(ctx);
 
-      texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+      texUnit = get_current_tex_unit(ctx);
       texObj = _mesa_select_tex_object(ctx, texUnit, target);
       _mesa_lock_texture(ctx, texObj);
       {
@@ -2814,7 +2826,7 @@ _mesa_TexSubImage1D( GLenum target, GLint level,
    }
 
 
-   texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   texUnit = get_current_tex_unit(ctx);
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
    assert(texObj);
 
@@ -2874,7 +2886,7 @@ _mesa_TexSubImage2D( GLenum target, GLint level,
       return;   /* error was detected */
    }
 
-   texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   texUnit = get_current_tex_unit(ctx);
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
    _mesa_lock_texture(ctx, texObj);
    {
@@ -2926,7 +2938,7 @@ _mesa_TexSubImage3D( GLenum target, GLint level,
       return;   /* error was detected */
    }
 
-   texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   texUnit = get_current_tex_unit(ctx);
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
 
    _mesa_lock_texture(ctx, texObj);
@@ -2987,7 +2999,7 @@ _mesa_CopyTexImage1D( GLenum target, GLint level,
                                postConvWidth, 1, border))
       return;
 
-   texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   texUnit = get_current_tex_unit(ctx);
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
    _mesa_lock_texture(ctx, texObj);
    {
@@ -3053,7 +3065,7 @@ _mesa_CopyTexImage2D( GLenum target, GLint level, GLenum internalFormat,
                                postConvWidth, postConvHeight, border))
       return;
 
-   texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   texUnit = get_current_tex_unit(ctx);
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
 
    _mesa_lock_texture(ctx, texObj);
@@ -3113,7 +3125,7 @@ _mesa_CopyTexSubImage1D( GLenum target, GLint level,
    if (copytexsubimage_error_check1(ctx, 1, target, level))
       return;
 
-   texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   texUnit = get_current_tex_unit(ctx);
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
 
    _mesa_lock_texture(ctx, texObj);
@@ -3168,7 +3180,7 @@ _mesa_CopyTexSubImage2D( GLenum target, GLint level,
    if (copytexsubimage_error_check1(ctx, 2, target, level))
       return;
 
-   texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   texUnit = get_current_tex_unit(ctx);
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
 
    _mesa_lock_texture(ctx, texObj);
@@ -3223,7 +3235,7 @@ _mesa_CopyTexSubImage3D( GLenum target, GLint level,
    if (copytexsubimage_error_check1(ctx, 3, target, level))
       return;
 
-   texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   texUnit = get_current_tex_unit(ctx);
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
 
    _mesa_lock_texture(ctx, texObj);
@@ -3477,7 +3489,7 @@ _mesa_CompressedTexImage1DARB(GLenum target, GLint level,
          return;
       }
 
-      texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+      texUnit = get_current_tex_unit(ctx);
       texObj = _mesa_select_tex_object(ctx, texUnit, target);
 
       _mesa_lock_texture(ctx, texObj);
@@ -3531,7 +3543,7 @@ _mesa_CompressedTexImage1DARB(GLenum target, GLint level,
          struct gl_texture_unit *texUnit;
          struct gl_texture_object *texObj;
          struct gl_texture_image *texImage;
-         texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+         texUnit = get_current_tex_unit(ctx);
 	 texObj = _mesa_select_tex_object(ctx, texUnit, target);
 
 	 _mesa_lock_texture(ctx, texObj);
@@ -3574,7 +3586,7 @@ _mesa_CompressedTexImage2DARB(GLenum target, GLint level,
          return;
       }
 
-      texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+      texUnit = get_current_tex_unit(ctx);
       texObj = _mesa_select_tex_object(ctx, texUnit, target);
 
       _mesa_lock_texture(ctx, texObj);
@@ -3630,7 +3642,7 @@ _mesa_CompressedTexImage2DARB(GLenum target, GLint level,
          struct gl_texture_unit *texUnit;
          struct gl_texture_object *texObj;
          struct gl_texture_image *texImage;
-         texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+         texUnit = get_current_tex_unit(ctx);
 	 texObj = _mesa_select_tex_object(ctx, texUnit, target);
 
 	 _mesa_lock_texture(ctx, texObj);
@@ -3670,7 +3682,7 @@ _mesa_CompressedTexImage3DARB(GLenum target, GLint level,
          return;
       }
 
-      texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+      texUnit = get_current_tex_unit(ctx);
       texObj = _mesa_select_tex_object(ctx, texUnit, target);
       _mesa_lock_texture(ctx, texObj);
       {
@@ -3724,7 +3736,7 @@ _mesa_CompressedTexImage3DARB(GLenum target, GLint level,
          struct gl_texture_unit *texUnit;
          struct gl_texture_object *texObj;
          struct gl_texture_image *texImage;
-         texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+         texUnit = get_current_tex_unit(ctx);
 	 texObj = _mesa_select_tex_object(ctx, texUnit, target);
 	 _mesa_lock_texture(ctx, texObj);
 	 {
@@ -3763,7 +3775,7 @@ _mesa_CompressedTexSubImage1DARB(GLenum target, GLint level, GLint xoffset,
       return;
    }
 
-   texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   texUnit = get_current_tex_unit(ctx);
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
    _mesa_lock_texture(ctx, texObj);
    {
@@ -3820,7 +3832,7 @@ _mesa_CompressedTexSubImage2DARB(GLenum target, GLint level, GLint xoffset,
       return;
    }
 
-   texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   texUnit = get_current_tex_unit(ctx);
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
    _mesa_lock_texture(ctx, texObj);
    {
@@ -3877,7 +3889,7 @@ _mesa_CompressedTexSubImage3DARB(GLenum target, GLint level, GLint xoffset,
       return;
    }
 
-   texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   texUnit = get_current_tex_unit(ctx);
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
    _mesa_lock_texture(ctx, texObj);
    {
@@ -3924,7 +3936,7 @@ _mesa_GetCompressedTexImageARB(GLenum target, GLint level, GLvoid *img)
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
-   texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   texUnit = get_current_tex_unit(ctx);
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
    if (!texObj) {
       _mesa_error(ctx, GL_INVALID_ENUM, "glGetCompressedTexImageARB");