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-rw-r--r--mesalib/src/mesa/swrast/s_context.h67
1 files changed, 67 insertions, 0 deletions
diff --git a/mesalib/src/mesa/swrast/s_context.h b/mesalib/src/mesa/swrast/s_context.h
index 8d7458c2d..8357483a2 100644
--- a/mesalib/src/mesa/swrast/s_context.h
+++ b/mesalib/src/mesa/swrast/s_context.h
@@ -109,6 +109,73 @@ 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,
+ * strides and Fetch/Store functions.
+ */
+struct swrast_texture_image
+{
+ struct gl_texture_image Base;
+
+#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
+};
+
+
+/** cast wrapper */
+static INLINE struct swrast_texture_image *
+swrast_texture_image(struct gl_texture_image *img)
+{
+ return (struct swrast_texture_image *) img;
+}
+
+/** cast wrapper */
+static INLINE const struct swrast_texture_image *
+swrast_texture_image_const(const struct gl_texture_image *img)
+{
+ return (const struct swrast_texture_image *) img;
+}
+
+
/**
* \struct SWcontext
* \brief Per-context state that's private to the software rasterizer module.