HSV random colors, bring back fade, fix alpha in shader, rasterize numbers to separate texture, start with number quads

geometry.js

@@ -1,6 +1,31 @@
 let colors = {};
 let rasterized = {};
 
+// https://stackoverflow.com/a/17243070
+function hsv_to_rgb(h, s, v) {
+    let r, g, b;
+
+    const i = Math.floor(h * 6);
+    const f = h * 6 - i;
+    const p = v * (1 - s);
+    const q = v * (1 - f * s);
+    const t = v * (1 - (1 - f) * s);
+
+    switch (i % 6) {
+        case 0: r = v, g = t, b = p; break;
+        case 1: r = q, g = v, b = p; break;
+        case 2: r = p, g = v, b = t; break;
+        case 3: r = p, g = q, b = v; break;
+        case 4: r = t, g = p, b = v; break;
+        case 5: r = v, g = p, b = q; break;
+    }
+
+    return [
+        Math.round(r * 255),
+        Math.round(g * 255),
+        Math.round(b * 255)
+    ];
+}
 function get_color(stage_name) {
     if (stage_name in config.predefined_colors) {
         return config.predefined_colors[stage_name];
@@ -10,11 +35,7 @@ function get_color(stage_name) {
         return colors[stage_name];
     }
 
-    const r = Math.floor(Math.random() * 155);
-    const g = Math.floor(Math.random() * 155);
-    const b = Math.floor(Math.random() * 155);
-
-    colors[stage_name] = [ 100 + r, 100 + g, 100 + b ];
+    colors[stage_name] = hsv_to_rgb(Math.random(), 0.56, 0.56); 
 
     return colors[stage_name];
 }
@@ -22,21 +43,12 @@ function get_color(stage_name) {
 function rasterize_and_pack(text, cycles) {
     // TODO: handle texture is full or stuff don't fit (unlikely)
 
-    const key = text + '@' + cycles;
+    const key = text;
 
     if (key in rasterized) {
         return rasterized[key];
     }
 
-    let cycles_total_padding = (cycles - 1) * config.padding;
-    let bonus_cells = Math.ceil(cycles_total_padding / config.w);
-
-    const tiles_needed = 1; // cycles - 1 + 1 + bonus_cells; // stage name + count cycles from one
-    if (tiles_needed > config.raster_texture_size / config.w - raster_tile.x) {
-        raster_tile.x = 0;
-        raster_tile.y += 1;
-    }
-
     const u = raster_tile.x * config.w / config.raster_texture_size;
     const v = raster_tile.y * config.h / config.raster_texture_size;
 
@@ -50,18 +62,42 @@ function rasterize_and_pack(text, cycles) {
     );
 
     raster_tile.x += 1;
-
-    /*
-    raster_tile.x += cycles + bonus_cells;
-
     if (raster_tile.x === config.raster_texture_size / config.w) {
         raster_tile.x = 0;
         raster_tile.y += 1;
     }
-    */
 
     rasterized[key] = [u, v];
 
+    if (cycles > 1) {
+        gl.bindTexture(gl.TEXTURE_2D, textures['numbers']);
+        for (let i = numbers_rasterized + 1; i <= cycles; ++i) {
+            const u = number_tile.x * config.w / config.raster_texture_size;
+            const v = number_tile.y * config.h / config.raster_texture_size;
+
+            rasterize(i);            
+
+            gl.texSubImage2D(gl.TEXTURE_2D, 0, 
+                number_tile.x * config.w, number_tile.y * config.h, 
+                config.w, config.h, 
+                gl.RGBA, gl.UNSIGNED_BYTE, 
+                c2d.canvas
+            );
+
+            number_tile.x += 1;
+            if (number_tile.x === config.raster_texture_size / config.w) {
+                number_tile.x = 0;
+                number_tile.y += 1;
+            }
+
+            rasterized[i] = [u, v];
+        }
+
+        if (cycles > numbers_rasterized) {
+            numbers_rasterized = cycles;
+        }
+    }
+
     return [u, v];
 }
 
@@ -83,10 +119,7 @@ function pack_instruction(instruction, positions, sizes, colors, uvs, starts, y)
         let a = 255;
 
         if (!instruction.retired) {
-            r = Math.max(50, r - 50);
-            g = Math.max(50, g - 50);
-            b = Math.max(50, b - 50);
-            a = 100;
+            a = 80;
         }
 
         const [u, v] = rasterize_and_pack(stage.name, stage_cycles);
@@ -123,6 +156,7 @@ function generate(trace_id) {
 
     for (let i = 0; i < instructions.length; ++i) {
         const instruction = instructions[i];
+        // TODO: make all quads same size, abuse this fact 
         result.count += pack_instruction(instruction, positions, sizes, colors, uvs, starts, y);
         if (config.limit > 0 && result.count >= config.limit) {
             break;
@@ -132,7 +166,7 @@ function generate(trace_id) {
 
     starts.push(positions.length);
 
-    if (false) {
+    if (config.show_texture) {
         result.pos = new Float32Array([0, 0]);
         result.size = new Float32Array([config.raster_texture_size, config.raster_texture_size]);
         result.color = new Uint8Array([0, 0, 0, 255]);
@@ -158,6 +192,10 @@ function generate(trace_id) {
 }
 
 function clip(quads) {
+    if (config.show_texture) {
+        return quads;
+    }
+
     const tl = screen_to_canvas({'x': 0, 'y': 0});
     const br = screen_to_canvas({'x': 0, 'y': canvas.height});
 

render.js

@@ -29,6 +29,7 @@ let config = {
     zoom_delta: 0.05,
     raster_texture_size: 4096,
     max_zoom_level: 0,
+    show_texture: false,
 };
 
 let canvas = null;
@@ -43,7 +44,9 @@ let zoom_screenp = { 'x': 0, 'y': 0 };
 let last_frame_dt = 0;
 let last_frame_ts = 0;
 let raster_tile = { 'x': 0, 'y': 0 };
+let number_tile = { 'x': 0, 'y': 0 };
 let spacedown = false;
+let numbers_rasterized = 0;
 
 const tquad_vs_src = `#version 300 es
     in vec2 a_pos;
@@ -56,6 +59,7 @@ const tquad_vs_src = `#version 300 es
     uniform float u_scale;
     uniform vec2 u_textile;
     uniform vec2 u_tile;
+    uniform int u_single;
 
     out vec4 v_color;
     out vec2 v_uv;
@@ -72,7 +76,11 @@ const tquad_vs_src = `#version 300 es
         }
 
         vec2 cycles = a_size / u_tile;
-        vec2 tt = u_textile / u_tile;
+        vec2 size = a_size;
+
+        if (u_single != 0) {
+            size = u_tile;
+        }
 
         if (vertex_index == 0) {
             // "top left" aka "p1"
@@ -80,16 +88,16 @@ const tquad_vs_src = `#version 300 es
             uv = a_uv;
         } else if (vertex_index == 1 || vertex_index == 5) {
             // "top right" aka "p2"
-            corner = a_pos + vec2(a_size.x, 0);
-            uv = a_uv + vec2(u_textile.x * cycles.x, 0);
+            corner = a_pos + vec2(size.x, 0);
+            uv = a_uv + vec2(u_textile.x, 0);
         } else if (vertex_index == 2 || vertex_index == 4) {
             // "bottom left" aka "p3"
-            corner = a_pos + vec2(0, a_size.y);
-            uv = a_uv + vec2(0, u_textile.y * cycles.y);
+            corner = a_pos + vec2(0, size.y);
+            uv = a_uv + vec2(0, u_textile.y);
         } else {
             // "bottom right" aka "p4"
-            corner = a_pos + a_size;
-            uv = a_uv + u_textile * cycles;
+            corner = a_pos + size;
+            uv = a_uv + u_textile;
         }
       
         vec2 screen02 = (corner.xy * vec2(u_scale) + u_translation) / u_res * 2.0;
@@ -109,13 +117,18 @@ const tquad_fs_src = `#version 300 es
 
     uniform sampler2D u_texture;
     uniform float u_fade;
+    uniform int u_solid;
      
     layout(location = 0) out vec4 FragColor;
 
     void main() {
-        vec4 text = texture(u_texture, v_uv);
-        text.a = min(min(text.a, v_color.a), u_fade);
-        FragColor = vec4(text.rgb * text.a + v_color.rgb, 1.0);
+        if (u_solid != 0) { 
+            FragColor = vec4(v_color.rgb * v_color.a, v_color.a);
+        } else {
+            vec4 text = texture(u_texture, v_uv);
+            float a = min(u_fade, min(text.a, v_color.a));
+            FragColor = vec4(text.rgb * a, a);
+        }
     }
 `;
 
@@ -177,6 +190,8 @@ function draw(ts, animation) {
         gl.uniform1i(program.locations['u_texture'], textures['raster']);
         gl.uniform2f(program.locations['u_tile'], config.w, config.h);
         gl.uniform1f(program.locations['u_fade'], fade);
+        gl.uniform1i(program.locations['u_solid'], 1);
+        gl.uniform1i(program.locations['u_single'], 0);
 
         gl.enableVertexAttribArray(program.locations['a_pos']);
         gl.enableVertexAttribArray(program.locations['a_size']);
@@ -193,9 +208,15 @@ function draw(ts, animation) {
         gl.vertexAttribDivisor(program.locations['a_color'], 1);
         gl.vertexAttribDivisor(program.locations['a_uv'], 1);
 
-        gl.bindTexture(gl.TEXTURE_2D, textures['raster']);
         gl.drawArraysInstanced(gl.TRIANGLES, 0, 6, clipped.count); 
 
+        if (fade > 0) {
+            gl.bindTexture(gl.TEXTURE_2D, textures['raster']);
+            gl.uniform1i(program.locations['u_solid'], 0);
+            gl.uniform1i(program.locations['u_single'], 1);
+            gl.drawArraysInstanced(gl.TRIANGLES, 0, 6, clipped.count); 
+        }
+
         gl.vertexAttribDivisor(program.locations['a_pos'], 0);
         gl.vertexAttribDivisor(program.locations['a_size'], 0);
         gl.vertexAttribDivisor(program.locations['a_color'], 0);
@@ -278,8 +299,12 @@ function init_webgl() {
 
     textures = {
         'raster': gl.createTexture(),
+        'numbers': gl.createTexture(),
     };
     
+    gl.enable(gl.BLEND);
+    gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
+
     const zeroes = new Uint8Array(config.raster_texture_size * config.raster_texture_size * 4);
 
     gl.bindTexture(gl.TEXTURE_2D, textures['raster']);
@@ -287,6 +312,11 @@ function init_webgl() {
     gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
     gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, config.raster_texture_size, config.raster_texture_size, 0, gl.RGBA, gl.UNSIGNED_BYTE, zeroes); // fill the whole texture once with zeroes to kill a warning about a partial upload
 
+    gl.bindTexture(gl.TEXTURE_2D, textures['numbers']);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, config.raster_texture_size, config.raster_texture_size, 0, gl.RGBA, gl.UNSIGNED_BYTE, zeroes); // fill the whole texture once with zeroes to kill a warning about a partial upload
+
     const resize_canvas = (entries) => {
         // https://www.khronos.org/webgl/wiki/HandlingHighDPI
         const entry = entries[0];