Merge pull request #55029 from clayjohn/VULKAN-SRGB

Add SHADER_IS_SRGB define to Vulkan renderer

servers/rendering/renderer_rd/shaders/scene_forward_mobile.glsl

@@ -7,6 +7,8 @@
 /* Include our forward mobile UBOs definitions etc. */
 #include "scene_forward_mobile_inc.glsl"
 
+#define SHADER_IS_SRGB false
+
 /* INPUT ATTRIBS */
 
 layout(location = 0) in vec3 vertex_attrib;
@@ -370,6 +372,8 @@ void main() {
 
 #VERSION_DEFINES
 
+#define SHADER_IS_SRGB false
+
 /* Specialization Constants */
 
 #if !defined(MODE_RENDER_DEPTH)