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-rw-r--r--src/mesa/main/image.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/src/mesa/main/image.c b/src/mesa/main/image.c
index e874719e645..e5b9ce82800 100644
--- a/src/mesa/main/image.c
+++ b/src/mesa/main/image.c
@@ -3882,6 +3882,16 @@ _mesa_pack_stencil_span( const GLcontext *ctx, GLuint n,
} \
} while (0)
+
+/**
+ * Unpack a row of depth/z values from memory, returning GLushort, GLuint
+ * or GLfloat values.
+ * The glPixelTransfer (scale/bias) params will be applied.
+ *
+ * \param dstType one of GL_UNSIGNED_SHORT, GL_UNSIGNED_INT, GL_FLOAT
+ * \param depthScale scale factor (max value) for returned GLushort or
+ * GLuint values (ignored for GLfloat).
+ */
void
_mesa_unpack_depth_span( const GLcontext *ctx, GLuint n,
GLenum dstType, GLvoid *dest, GLfloat depthScale,
@@ -3907,7 +3917,9 @@ _mesa_unpack_depth_span( const GLcontext *ctx, GLuint n,
}
return;
}
- if (srcType == GL_UNSIGNED_SHORT && dstType == GL_UNSIGNED_INT) {
+ if (srcType == GL_UNSIGNED_SHORT
+ && dstType == GL_UNSIGNED_INT
+ && depthScale == (GLfloat) 0xffffffff) {
const GLushort *src = (const GLushort *) source;
GLuint *dst = (GLuint *) dest;
GLuint i;