再见了，所有的skia

konabot/plugins/marchtoy/gl_render.py

@@ -29,7 +29,7 @@ def render(vs: str, fs: str, res: tuple[int, int]):
     vao.render(moderngl.TRIANGLES)
     Image.frombytes('RGB', fbo.size, fbo.read(), 'raw', 'RGB', 0, -1).show()
 
-fs = Scene("cube camera.pos(1).lookat(0)").compile()
+fs = Scene("cube(0.5).pos(1) camera.pos(1).lookat(0)").compile()
 PATH = pathlib.Path(__file__).parent / "shaders"
 with (PATH / "vert.glsl").open(encoding='utf-8') as f:
     vs = f.read()

konabot/plugins/marchtoy/shaders/frag.glsl

@@ -1,5 +1,4 @@
 #version 330
-uniform vec2 u_resolution;
 // compatibility
 #define float4x4 mat4x4
 #define float4 vec4
@@ -9,7 +8,7 @@ uniform vec2 u_resolution;
 const float EPS = 0.001;
 const int MAX_ITER = 64;
 
-in vec2 fragCoord;
+uniform vec2 u_resolution;
 out vec4 fragColor;
 
 struct sdQuery {
@@ -71,7 +70,7 @@ vec4 march(vec3 p, vec3 r) {
 }
 
 void main() {
-    vec2 uv = -2. * (fragCoord / u_resolution - .5) * vec2(u_resolution.x / u_resolution.y, 1.);
+    vec2 uv = 2. * (gl_FragCoord.xy / u_resolution - .5) * vec2(u_resolution.x / u_resolution.y, 1.);
     vec3 c_p = vec3(<CAM_POS>);
     vec3 c_z = normalize(vec3(<CAM_DIR>));
     vec3 world_up = abs(c_z.y) > 0.999 ? vec3(0., 0., 1.) : vec3(0., 1., 0.);

konabot/plugins/marchtoy/shaders/raymarch.sksl

@@ -1,73 +0,0 @@
-uniform float2 u_resolution;
-
-const float EPS = 0.001;
-const int MAX_ITER = 64;
-struct sdQuery {
-    float value;
-    int obj_id;
-};
-
-float sdCube(float3 p, float3 b) {
-    p = abs(p) - b;
-    return length(max(p, 0.0)) + min(max(p.x, max(p.y, p.z)), 0.0);
-}
-
-float sdSphere(float3 p, float r) {
-    return length(p) - r;
-}
-
-sdQuery sd(float3 p) {
-    sdQuery qry;
-    qry.value = 100000000.0;
-    qry.obj_id = -1;
-    <SDF_BLOCK>
-    return qry;
-}
-
-float3 nrm(float3 p) {
-    float2 d = float2(EPS, 0.0);
-    return normalize(float3(
-        sd(p + d.xyy).value - sd(p - d.xyy).value,
-        sd(p + d.yxy).value - sd(p - d.yxy).value,
-        sd(p + d.yyx).value - sd(p - d.yyx).value
-    ));
-}
-
-float4 materialColor(int obj_id) {
-    <COLOR_BLOCK>
-    return float4(1.0);
-}
-
-float4 color(float3 p, int obj_id) {
-    float3 normal = nrm(p);
-    float3 light_dir = normalize(float3(0.5, 0.8, -0.6));
-    float light = 0.2 + 0.8 * max(dot(normal, light_dir), 0.0);
-    float4 base = materialColor(obj_id);
-    return float4(base.rgb * light, base.a);
-}
-
-float4 march(float3 p, float3 r) {
-    sdQuery qry;
-    float4 col = float4(0.0);
-    for(int i = 0; i < MAX_ITER; ++i) {
-        qry = sd(p);
-        if(qry.value < EPS){
-            col = color(p, qry.obj_id);
-            break;
-        }
-        p += qry.value * r;
-    }
-    return col;
-}
-
-half4 main(float2 fragCoord) {
-    float2 uv = -2. * (fragCoord / u_resolution - .5) * float2(u_resolution.x / u_resolution.y, 1.);
-    float3 c_p = float3(<CAM_POS>);
-    float3 c_z = normalize(float3(<CAM_DIR>));
-    float3 world_up = abs(c_z.y) > 0.999 ? float3(0., 0., 1.) : float3(0., 1., 0.);
-    float3 c_x = normalize(cross(c_z, world_up));
-    float3 c_y = normalize(cross(c_x, c_z));
-    float3x3 view = float3x3(c_x, c_y, c_z);
-    float3 r = normalize(float3(uv, <CAM_FOCUS>));
-    return half4(march(c_p, view * r));
-}

konabot/plugins/marchtoy/shaders/vert.glsl

@@ -1,6 +1,5 @@
 #version 330
 in vec2 in_position;
-out vec2 fragCoord;
 
 void main() {
     gl_Position = vec4(in_position, 0.0, 1.0);