comp/shaders: Rename quad shaders to layer.

As the shader is used for all layers we have, the generic name fits
better.

src/xrt/compositor/CMakeLists.txt

@@ -8,8 +8,8 @@ spirv_shaders(SHADER_HEADERS
 	shaders/none.frag
 	shaders/panotools.frag
 	shaders/vive.frag
-	shaders/quad.frag
-	shaders/quad.vert
+	shaders/layer.frag
+	shaders/layer.vert
 	)
 
 set(CLIENT_SOURCE_FILES)

src/xrt/compositor/main/comp_layer_renderer.c

@@ -12,8 +12,8 @@
 
 #include "comp_layer_renderer.h"
 
-#include "shaders/quad.frag.h"
-#include "shaders/quad.vert.h"
+#include "shaders/layer.frag.h"
+#include "shaders/layer.vert.h"
 
 #include <stdio.h>
 #include <math.h>
@@ -247,9 +247,9 @@ _init_graphics_pipeline(struct comp_layer_renderer *self,
 	};
 
 	VkPipelineShaderStageCreateInfo shader_stages[2] = {
-	    _shader_load(vk, shaders_quad_vert, sizeof(shaders_quad_vert),
+	    _shader_load(vk, shaders_layer_vert, sizeof(shaders_layer_vert),
 	                 VK_SHADER_STAGE_VERTEX_BIT),
-	    _shader_load(vk, shaders_quad_frag, sizeof(shaders_quad_frag),
+	    _shader_load(vk, shaders_layer_frag, sizeof(shaders_layer_frag),
 	                 VK_SHADER_STAGE_FRAGMENT_BIT),
 	};
 

src/xrt/compositor/shaders/meson.build

@@ -5,8 +5,8 @@ shader_srcs = [
 	'none.frag',
 	'panotools.frag',
 	'vive.frag',
-	'quad.vert',
-	'quad.frag'
+	'layer.vert',
+	'layer.frag'
 ]
 
 shader_headers = []