[Intel-gfx] [PATCH 1/5] lib: Add a function to dump a scratch buf into a png

[Damien Lespiau]

Signed-off-by: Damien Lespiau <damien.lespiau at intel.com>
---
 lib/Makefile.am  |  1 +
 lib/rendercopy.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 lib/rendercopy.h |  2 ++
 3 files changed, 52 insertions(+)
 create mode 100644 lib/rendercopy.c

diff --git a/lib/Makefile.am b/lib/Makefile.am
index 431fd93..d7f4275 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -32,6 +32,7 @@ libintel_tools_la_SOURCES = 	\
 	rendercopy_gen6.c	\
 	rendercopy_gen7.c	\
 	rendercopy.h		\
+	rendercopy.c		\
 	intel_reg_map.c		\
 	intel_dpio.c		\
 	intel_iosf.c		\
diff --git a/lib/rendercopy.c b/lib/rendercopy.c
new file mode 100644
index 0000000..2c1684d
--- /dev/null
+++ b/lib/rendercopy.c
@@ -0,0 +1,49 @@
+/*
+ * Copyright © 2013 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Damien Lespiau <damien.lespiau at intel.com>
+ */
+
+#include <cairo.h>
+
+#include "rendercopy.h"
+
+void scratch_buf_write_to_png(struct scratch_buf *buf, const char *filename)
+{
+	cairo_surface_t *surface;
+	cairo_status_t ret;
+
+	drm_intel_bo_map(buf->bo, 0);
+	surface = cairo_image_surface_create_for_data(buf->bo->virtual,
+						      CAIRO_FORMAT_RGB24,
+						      buf_width(buf),
+						      buf_height(buf),
+						      buf->stride);
+	ret = cairo_surface_write_to_png(surface, filename);
+	if (ret != CAIRO_STATUS_SUCCESS) {
+		fprintf(stderr, "%s: %s\n", __func__,
+			cairo_status_to_string(ret));
+	}
+	cairo_surface_destroy(surface);
+	drm_intel_bo_unmap(buf->bo);
+}
diff --git a/lib/rendercopy.h b/lib/rendercopy.h
index 8fd9222..ace4392 100644
--- a/lib/rendercopy.h
+++ b/lib/rendercopy.h
@@ -85,4 +85,6 @@ void gen2_render_copyfunc(struct intel_batchbuffer *batch,
 			  unsigned width, unsigned height,
 			  struct scratch_buf *dst, unsigned dst_x, unsigned dst_y);
 
+void scratch_buf_write_to_png(struct scratch_buf *buf, const char *filename);
+
 #endif /* RENDERCOPY_H */
-- 
1.8.3.1