1 files changed, 40 insertions, 2 deletions
diff --git a/src/mesa/swrast/s_context.h b/src/mesa/swrast/s_context.h
index 687480ed285..8357483a27f 100644
--- a/src/mesa/swrast/s_context.h
+++ b/src/mesa/swrast/s_context.h
@@ -109,6 +109,27 @@ typedef void (*validate_texture_image_func)(struct gl_context *ctx,
 			        _NEW_DEPTH)
 
 
+struct swrast_texture_image;
+
+
+typedef void (*FetchTexelFuncC)(const struct swrast_texture_image *texImage,
+                                GLint col, GLint row, GLint img,
+                                GLchan *texelOut);
+
+/**
+ * As above, but returns floats.
+ * Used for depth component images and for upcoming signed/float
+ * texture images.
+ */
+typedef void (*FetchTexelFuncF)(const struct swrast_texture_image *texImage,
+                                GLint col, GLint row, GLint img,
+                                GLfloat *texelOut);
+
+
+typedef void (*StoreTexelFunc)(struct swrast_texture_image *texImage,
+                               GLint col, GLint row, GLint img,
+                               const void *texel);
+
 /**
  * Subclass of gl_texture_image.
  * We need extra fields/info to keep tracking of mapped texture buffers,
@@ -118,7 +139,25 @@ struct swrast_texture_image
 {
    struct gl_texture_image Base;
 
-   /* XXX new members coming soon */
+#if 0
+   /** used for mipmap LOD computation */
+   GLfloat WidthScale, HeightScale, DepthScale;
+   GLboolean _IsPowerOfTwo;  /**< Are all dimensions powers of two? */
+
+   GLubyte *Data;    /**< The actual texture data in malloc'd memory */
+
+   GLint TexelSize;  /**< bytes per texel block */
+#endif
+
+   FetchTexelFuncC FetchTexelc;
+   FetchTexelFuncF FetchTexelf;
+   StoreTexelFunc Store;
+
+#if 0
+   /** These fields only valid when texture memory is mapped */
+   GLubyte **SliceMaps;  /**< points to OneMap or a malloc'd array */
+   GLint RowStride;  /**< bytes per row of blocks */
+#endif
 };
 
 
@@ -137,7 +176,6 @@ swrast_texture_image_const(const struct gl_texture_image *img)
 }
 
 
-
 /**
  * \struct SWcontext
  * \brief  Per-context state that's private to the software rasterizer module.