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-rw-r--r--src/mesa/main/formats.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/src/mesa/main/formats.c b/src/mesa/main/formats.c
index 3d2349b7304..cfaac04f13a 100644
--- a/src/mesa/main/formats.c
+++ b/src/mesa/main/formats.c
@@ -321,6 +321,27 @@ _mesa_get_format_block_size(mesa_format format, GLuint *bw, GLuint *bh)
/**
+ * Return the block size (in pixels) for the given format. Normally
+ * the block size is 1x1x1. But compressed formats will have block
+ * sizes of 4x4x4, 3x3x3 pixels, etc.
+ * \param bw returns block width in pixels
+ * \param bh returns block height in pixels
+ * \param bd returns block depth in pixels
+ */
+void
+_mesa_get_format_block_size_3d(mesa_format format,
+ GLuint *bw,
+ GLuint *bh,
+ GLuint *bd)
+{
+ const struct gl_format_info *info = _mesa_get_format_info(format);
+ *bw = info->BlockWidth;
+ *bh = info->BlockHeight;
+ *bd = info->BlockDepth;
+}
+
+
+/**
* Returns the an array of four numbers representing the transformation
* from the RGBA or SZ colorspace to the given format. For array formats,
* the i'th RGBA component is given by: