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-rw-r--r--src/mesa/swrast/s_context.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/src/mesa/swrast/s_context.h b/src/mesa/swrast/s_context.h
index 7f1e4c78ee4..f03f0485bcd 100644
--- a/src/mesa/swrast/s_context.h
+++ b/src/mesa/swrast/s_context.h
@@ -168,6 +168,31 @@ swrast_texture_image_const(const struct gl_texture_image *img)
/**
+ * Subclass of gl_renderbuffer with extra fields needed for software
+ * rendering.
+ */
+struct swrast_renderbuffer
+{
+ struct gl_renderbuffer Base;
+
+ GLubyte *Buffer; /**< The malloc'd memory for buffer */
+
+ /** These fields are only valid while buffer is mapped for rendering */
+ GLubyte *Map;
+ GLint RowStride; /**< in bytes */
+};
+
+
+/** cast wrapper */
+static inline struct swrast_renderbuffer *
+swrast_renderbuffer(struct gl_renderbuffer *img)
+{
+ return (struct swrast_renderbuffer *) img;
+}
+
+
+
+/**
* \struct SWcontext
* \brief Per-context state that's private to the software rasterizer module.
*/