backup

[demo] / vk_shaders / morphing.v.glsl

diff --git a/vk_shaders/morphing.v.glsl b/vk_shaders/morphing.v.glsl
new file mode 100644 (file)
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+++ b/vk_shaders/morphing.v.glsl
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+#version 450
+
+layout(std140, binding = 0) uniform matrix_state {
+       mat4 mview;
+       mat4 mmviewproj;
+       mat4 mmod;
+       float t;
+} m;
+
+const float half_height = 0.855;
+
+layout(location = 0) out vec3 pos;
+layout(location = 1) out vec2 tex_coord;
+layout(location = 2) out vec3 world_normal;
+
+/* attributes */
+layout(location = 1) in vec3 attr_pos;
+layout(location = 2) in vec3 attr_normal;
+layout(location = 3) in vec2 attr_tex;
+
+void main()
+{
+       vec3 sph_pos = normalize(vec3(attr_pos.x, attr_pos.y - half_height, attr_pos.z));
+
+       vec3 sph_normal = sph_pos;
+       sph_pos.y += half_height;
+
+       vec3 p = mix(attr_pos, sph_pos, m.t);
+       vec3 n = mix(attr_normal, sph_normal, m.t);
+
+       gl_Position = m.mmviewproj * vec4(p, 1.0);
+
+       pos = (m.mview * vec4(p, 1.0)).xyz;
+       // ldir = (mview * vec4(lpos, 1.0)).xyz;
+
+       // mat3 normal_matrix = mat3(mview);
+       // normal = normal_matrix * n;
+
+       tex_coord = attr_tex;
+       world_normal = (m.mmod * vec4(attr_normal, 1.0)).xyz;
+}