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authormarha <marha@users.sourceforge.net>2011-12-25 17:27:22 +0100
committerMarc Haesen <marc@hc-consult.be>2011-12-25 17:27:22 +0100
commit0fd2d56b0fc0ce74c5f3e5e23cb26b0d1a075ba1 (patch)
treed449668fac922e358f442aeb82d0936ca786ed72 /mesalib/src/mesa/swrast/s_context.h
parent0b3f475361d87764004432f541e34bb86af1b9f3 (diff)
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mesa xkeyboard-config xserver git update 25 dec 2011
Diffstat (limited to 'mesalib/src/mesa/swrast/s_context.h')
-rw-r--r--mesalib/src/mesa/swrast/s_context.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/mesalib/src/mesa/swrast/s_context.h b/mesalib/src/mesa/swrast/s_context.h
index 446b990d9..af9e49ecb 100644
--- a/mesalib/src/mesa/swrast/s_context.h
+++ b/mesalib/src/mesa/swrast/s_context.h
@@ -422,5 +422,17 @@ _swrast_unmap_renderbuffers(struct gl_context *ctx);
#define ATTRIB_LOOP_END } }
+/**
+ * Return the address of a pixel value in a mapped renderbuffer.
+ */
+static inline GLubyte *
+_swrast_pixel_address(struct gl_renderbuffer *rb, GLint x, GLint y)
+{
+ const GLint bpp = _mesa_get_format_bytes(rb->Format);
+ const GLint rowStride = rb->RowStride * bpp;
+ return (GLubyte *) rb->Data + y * rowStride + x * bpp;
+}
+
+
#endif