增加LightPosition3D.vert计算顶点方向光，配合SceneTree范例

shader/FragCoord.frag

@@ -1,4 +1,4 @@
-#version 450 core
+#version 450 core
 
 layout(binding=1) uniform WorldMatrix     // hgl/math/Math.h
 {
@@ -9,6 +9,7 @@ layout(binding=1) uniform WorldMatrix     // hgl/math/Math.h
 
     mat4 modelview;
     mat4 inverse_modelview;
+    mat3 normal;
 
     mat4 mvp;
     mat4 inverse_mvp;

shader/LightPosition3D.vert

@@ -0,0 +1,51 @@
+#version 450 core
+
+layout(location = 0) in vec3 Vertex;
+layout(location = 1) in vec3 Normal;
+
+layout(binding=0) uniform WorldMatrix     // hgl/math/Math.h
+{
+    mat4 ortho;
+
+    mat4 projection;
+    mat4 inverse_projection;
+
+    mat4 modelview;
+    mat4 inverse_modelview;
+
+    mat4 mvp;
+    mat4 inverse_mvp;
+
+    vec4 view_pos;
+    vec2 canvas_resolution;
+    vec2 viewport_resolution;
+}world;
+
+layout(push_constant) uniform Consts {
+    mat4 local_to_world;
+}pc;
+
+layout(binding=1) uniform ColorMaterial
+{
+    vec4 color;
+    vec4 amibent;
+} color_material;
+
+layout(binding=2) uniform Sun
+{
+    vec3 direction;
+}sun;
+
+layout(location=0) out vec4 FragmentColor;
+
+float GetSunlightIntensity()
+{
+    return max(dot(normalize(Normal*mat3(world.mvp)),sun.direction),0.0);
+}
+
+void main()
+{
+    FragmentColor=color_material.color*GetSunlightIntensity()+color_material.amibent;
+
+    gl_Position=vec4(Vertex,1.0)*(pc.local_to_world*world.mvp);
+}

shader/OnlyPosition3D.vert

@@ -11,6 +11,7 @@ layout(binding=0) uniform WorldMatrix     // hgl/math/Math.h
 
     mat4 modelview;
     mat4 inverse_modelview;
+    mat3 normal;
 
     mat4 mvp;
     mat4 inverse_mvp;
@@ -18,11 +19,11 @@ layout(binding=0) uniform WorldMatrix     // hgl/math/Math.h
     vec4 view_pos;
     vec2 canvas_resolution;
     vec2 viewport_resolution;
-} world;
+}world;
 
 layout(push_constant) uniform Consts {
     mat4 local_to_world;
-} pc;
+}pc;
 
 void main()
 {

shader/UBO/WorldMatrix.glsl

@@ -1,4 +1,4 @@
-layout(binding=0) uniform WorldMatrix     // hgl/math/Math.h
+layout(binding=0) uniform WorldMatrix     // hgl/math/Math.h
 {
     mat4 ortho;
 
@@ -7,10 +7,12 @@ layout(binding=0) uniform WorldMatrix     // hgl/math/Math.h
 
     mat4 modelview;
     mat4 inverse_modelview;
+    mat3 normal;
 
     mat4 mvp;
     mat4 inverse_mvp;
 
     vec4 view_pos;
-    vec2 resolution;
+    vec2 canvas_resolution;
+    vec2 viewport_resolution;
 } world;

shader/VertexColor.frag

@@ -1,4 +1,4 @@
-#version 450 core
+#version 450 core
 
 layout(location = 0) in vec4 FragmentColor;
 layout(location = 0) out vec4 FragColor;