Geommetry shader and start of rotation&movement

shaders/compile.bat

@@ -1,2 +1,3 @@
 C:/VulkanSDK/1.3.280.0/Bin/glslc.exe shaders/shader.vert -o shaders/vert.spv
-C:/VulkanSDK/1.3.280.0/Bin/glslc.exe shaders/shader.frag -o shaders/frag.spv
+C:/VulkanSDK/1.3.280.0/Bin/glslc.exe shaders/shader.frag -o shaders/frag.spv
+C:/VulkanSDK/1.3.280.0/Bin/glslc.exe shaders/shader.geom -o shaders/geo.spv

shaders/shader.frag

@@ -7,5 +7,5 @@ layout(location = 0) out vec4 outColor;
 layout(binding = 1) uniform sampler2D texSampler;
 
 void main() {
-    outColor = texture(texSampler, fragTexCoord);
+    outColor = vec4(fragColor, 1); //texture(texSampler, fragTexCoord);
 }

shaders/shader.geom

@@ -0,0 +1,152 @@
+#version 450
+
+layout(points) in;
+layout(triangle_strip, max_vertices=24) out;
+
+layout(binding = 0) uniform UniformBufferObject {
+    mat4 model;
+    mat4 geom_rot;
+    mat4 view;
+    mat4 proj;
+} ubo;
+
+layout(location = 0) in vec3 geoColor[];
+layout(location = 1) in vec2 geoTexCoord[];
+
+layout(location = 0) out vec3 fragColor;
+layout(location = 1) out vec2 fragTexCoord;
+
+void main () {
+    mat4 geom_rotation = ubo.geom_rot;
+    //back
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, -0.5, -0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, -0.5, -0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, 0.5, -0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, 0.5, -0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+    EndPrimitive();
+
+    //front
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, 0.5, 0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, -0.5, 0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, 0.5, 0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, -0.5, 0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+    EndPrimitive();
+
+    //up
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, 0.5, -0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, 0.5, -0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, 0.5, 0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, 0.5, 0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+    EndPrimitive();
+
+    //down
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, -0.5, 0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, -0.5, -0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, -0.5, 0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, -0.5, -0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+    EndPrimitive();
+
+    //left
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, 0.5, -0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, -0.5, -0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, 0.5, 0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, -0.5, 0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+    EndPrimitive();
+
+    //right
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, -0.5, 0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, -0.5, -0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, 0.5, 0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+
+    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, 0.5, -0.5, 0));
+    fragColor = geoColor[0];
+    fragTexCoord = geoTexCoord[0];
+    EmitVertex();
+    EndPrimitive();
+}

shaders/shader.vert

@@ -2,6 +2,7 @@
 
 layout(binding = 0) uniform UniformBufferObject {
     mat4 model;
+    mat4 geom_rot;
     mat4 view;
     mat4 proj;
 } ubo;
@@ -11,11 +12,11 @@ layout(location = 0) in vec3 inPosition;
 layout(location = 1) in vec3 inColor;
 layout(location = 2) in vec2 inTexCoord;
 
-layout(location = 0) out vec3 fragColor;
-layout(location = 1) out vec2 fragTexCoord;
+layout(location = 0) out vec3 geoColor;
+layout(location = 1) out vec2 geoTexCoord;
 
 void main() {
-    gl_Position = ubo.proj * ubo.view * ubo.model * vec4(inPosition, 1.0);
-    fragColor = inColor;
-    fragTexCoord = inTexCoord;
+    gl_Position = ubo.geom_rot * ubo.model *  vec4(inPosition, 1.0);
+    geoColor = inColor;
+    geoTexCoord = inTexCoord;
 }