DRW: Codestyle refactor: Use macro to create shader libs.

This clears up the code from many DynStr usage. Easier to read.

1 files changed, 13 insertions, 1 deletions

diff --git a/source/blender/draw/intern/DRW_render.h b/source/blender/draw/intern/DRW_render.h
index 826d3a22d68..eafa8543940 100644
--- a/source/blender/draw/intern/DRW_render.h
+++ b/source/blender/draw/intern/DRW_render.h
@@ -258,7 +258,19 @@ void DRW_transform_to_display(struct GPUTexture *tex);
 struct GPUShader *DRW_shader_create(
         const char *vert, const char *geom, const char *frag, const char *defines);
 struct GPUShader *DRW_shader_create_with_lib(
-        const char *vert, const char *geom, const char *frag, const char *lib, const char *defines);
+        const char *vert, const char *geom, const char *frag, const char *defines, ...);
+/* This macro concatenates all strings into its first arg.
+ * Remmeber to free the resulting string after use. */
+#define DRW_shader_create_lib(r_lib, ...) do { \
+	const char *array[] = {__VA_ARGS__}; \
+	DynStr *ds_frag = BLI_dynstr_new(); \
+	for (int i = 0; i < (sizeof(array) / sizeof(*array)); ++i) { \
+		BLI_dynstr_append(ds_frag, array[i]); \
+	} \
+	r_lib = BLI_dynstr_get_cstring(ds_frag); \
+	BLI_dynstr_free(ds_frag); \
+} while (0)
+
 struct GPUShader *DRW_shader_create_2D(const char *frag, const char *defines);
 struct GPUShader *DRW_shader_create_3D(const char *frag, const char *defines);
 struct GPUShader *DRW_shader_create_fullscreen(const char *frag, const char *defines);