Simplified text overlay example, code cleanup, better text blending

data/shaders/textoverlay/background.frag

@@ -1,15 +0,0 @@
-#version 450
-
-#extension GL_ARB_separate_shader_objects : enable
-#extension GL_ARB_shading_language_420pack : enable
-
-layout (binding = 1) uniform sampler2D samplerColorMap;
-
-layout (location = 0) in vec2 inUV;
-
-layout (location = 0) out vec4 outFragColor;
-
-void main() 
-{
-	outFragColor = texture(samplerColorMap, inUV);	
-}

data/shaders/textoverlay/background.vert

@@ -1,17 +0,0 @@
-#version 450
-
-#extension GL_ARB_separate_shader_objects : enable
-#extension GL_ARB_shading_language_420pack : enable
-
-layout (location = 0) out vec2 outUV;
-
-out gl_PerVertex 
-{
-    vec4 gl_Position;   
-};
-
-void main() 
-{
-	outUV = vec2((gl_VertexIndex << 1) & 2, gl_VertexIndex & 2);
-	gl_Position = vec4(outUV * vec2(2.0f, 2.0f) + vec2(-1.0f, -1.0f), 0.0f, 1.0f);
-}

data/shaders/textoverlay/generate-spirv.bat

@@ -1,6 +0,0 @@
-glslangvalidator -V text.vert -o text.vert.spv
-glslangvalidator -V text.frag -o text.frag.spv
-glslangvalidator -V mesh.vert -o mesh.vert.spv
-glslangvalidator -V mesh.frag -o mesh.frag.spv
-glslangvalidator -V background.vert -o background.vert.spv
-glslangvalidator -V background.frag -o background.frag.spv

data/shaders/textoverlay/mesh.frag

@@ -3,8 +3,6 @@
 #extension GL_ARB_separate_shader_objects : enable
 #extension GL_ARB_shading_language_420pack : enable
 
-layout (binding = 1) uniform sampler2D samplerColorMap;
-
 layout (location = 0) in vec3 inNormal;
 layout (location = 1) in vec2 inUV;
 layout (location = 2) in vec3 inViewVec;
@@ -14,13 +12,11 @@ layout (location = 0) out vec4 outFragColor;
 
 void main() 
 {
-	vec4 color = texture(samplerColorMap, inUV);
-
 	vec3 N = normalize(inNormal);
 	vec3 L = normalize(inLightVec);
 	vec3 V = normalize(inViewVec);
 	vec3 R = reflect(-L, N);
-	vec3 diffuse = max(dot(N, L), 0.0) * color.rgb;
-	vec3 specular = pow(max(dot(R, V), 0.0), 1.0) * vec3(color.a);
-	outFragColor = vec4(diffuse + specular, 1.0);	
+	float diffuse = max(dot(N, L), 0.0);
+	float specular = pow(max(dot(R, V), 0.0), 1.0);
+	outFragColor = vec4(vec3(diffuse + specular) * vec3(0.25), 1.0);	
 }

data/shaders/textoverlay/mesh.vert

@@ -21,7 +21,7 @@ layout (location = 3) out vec3 outLightVec;
 
 out gl_PerVertex 
 {
-    vec4 gl_Position;   
+	vec4 gl_Position;   
 };
 
 void main() 
@@ -30,9 +30,9 @@ void main()
 	outUV = inUV;
 	gl_Position = ubo.projection * ubo.model * vec4(inPos.xyz, 1.0);
 	
-    vec4 pos = ubo.model * vec4(inPos, 1.0);
-    outNormal = mat3(transpose(inverse(ubo.model))) * normalize(inNormal);
+	vec4 pos = ubo.model * vec4(inPos, 1.0);
+	outNormal = mat3(transpose(inverse(ubo.model))) * normalize(inNormal);
 	vec3 lPos = mat3(ubo.model) * ubo.lightPos.xyz;
-    outLightVec = lPos - pos.xyz;
-    outViewVec = -pos.xyz;			
+	outLightVec = lPos - pos.xyz;
+	outViewVec = -pos.xyz;			
 }

data/shaders/textoverlay/text.frag

@@ -9,5 +9,5 @@ layout (location = 0) out vec4 outFragColor;
 void main(void)
 {
 	float color = texture(samplerFont, inUV).r;
-	outFragColor = vec4(vec3(color), 1.0);
+	outFragColor = vec4(color);
 }

data/shaders/textoverlay/text.vert

@@ -7,7 +7,7 @@ layout (location = 0) out vec2 outUV;
 
 out gl_PerVertex 
 {
-    vec4 gl_Position;   
+	vec4 gl_Position;   
 };
 
 void main(void)