aolo2
/
desk2
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
Browse Source

Separate stroke rendering into function. Reuse said function for static 

and dynamic draw.
sdf
A.Olokhtonov 1 week ago
parent
5bb8b0a7ee
commit
b961504b54
6 changed files with 191 additions and 164 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 1
      client/config.js
  2. 1
      client/index.js
  3. 3
      client/wasm/lod.c
  4. 298
      client/webgl_draw.js
  5. 45
      client/webgl_geometry.js
  6. 5
      client/webgl_shaders.js

1
client/config.js
Unescape View File

@ -22,7 +22,6 @@ const config = { @@ -22,7 +22,6 @@ const config = {
initial_dynamic_bytes: 4096,
initial_wasm_bytes: 4096,
stroke_texture_size: 1024, // means no more than 1024^2 = 1M strokes in total (this is a LOT. HMH blackboard has like 80K)
dynamic_stroke_texture_size: 128, // means no more than 128^2 = 16K dynamic strokes at once
ui_texture_size: 16,
bvh_fullnode_depth: 6,
pattern_fadeout_min: 0.3,

1
client/index.js
Unescape View File

@ -232,6 +232,7 @@ async function main() { @@ -232,6 +232,7 @@ async function main() {
'dynamic_instance_points': tv_create(Float32Array, 4096),
'dynamic_instance_pressure': tv_create(Uint8Array, 4096),
'dynamic_instance_ids': tv_create(Uint32Array, 4096),
'dynamic_instance_batches': tv_create(Uint32Array, 4096),
'stroke_data': serializer_create(config.initial_static_bytes),
'dynamic_stroke_data': serializer_create(config.initial_static_bytes),

3
client/wasm/lod.c
Unescape View File

@ -324,9 +324,8 @@ do_lod(int *clipped_indices, int clipped_count, float zoom, @@ -324,9 +324,8 @@ do_lod(int *clipped_indices, int clipped_count, float zoom,
// Compute recommended LOD level, add to current batch or start new batch
int lod;
// The LOD levels have been picked manually based on "COM" (Careful Observation Method)
float perceptual_width = width[stroke_index] * zoom;
// The LOD levels have been picked manually based on "COM" (Careful Observation Method)
// The LOD levels have been picked manually based on "COM" (Careful Observation Method) @lod
if (perceptual_width < 1.9f) {
lod = 0;
} else if (perceptual_width < 4.56f) {

298
client/webgl_draw.js
Unescape View File

@ -96,6 +96,119 @@ function draw_html(state) { @@ -96,6 +96,119 @@ function draw_html(state) {
}
function draw_strokes(state, width, height, programs, gl, lod_levels, segment_count,
total_lod_floats, total_lod_indices,
batches_tv,
points_tv,
ids_tv,
pressures_tv,
vbo,
ebo,
stroke_texture,
stroke_data,
stroke_count,
) {
const pr = programs['main'];
// Last pair (lod unused) to have a proper from;to
tv_add2(batches_tv, segment_count);
tv_add2(batches_tv, -1);
gl.clear(gl.DEPTH_BUFFER_BIT); // draw strokes above the images
gl.useProgram(pr.program);
const total_size = points_tv.size * 4 +
ids_tv.size * 4 +
round_to_pow2(pressures_tv.size, 4) +
total_lod_floats * 4;
gl.bindBuffer(gl.ARRAY_BUFFER, vbo);
gl.bufferData(gl.ARRAY_BUFFER, total_size, gl.STREAM_DRAW);
// Segment points, segment stroke ids, segment pressures
gl.bufferSubData(gl.ARRAY_BUFFER, 0, tv_data(points_tv));
gl.bufferSubData(gl.ARRAY_BUFFER, points_tv.size * 4, tv_data(ids_tv));
gl.bufferSubData(gl.ARRAY_BUFFER, points_tv.size * 4 + ids_tv.size * 4, tv_data(pressures_tv));
gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, ebo);
gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, total_lod_indices * 4, gl.STREAM_DRAW);
// Upload all variants of LOD vertices/indices
const base_lod_points_offset = points_tv.size * 4 + ids_tv.size * 4 + round_to_pow2(pressures_tv.size, 4);
for (const level of lod_levels) {
gl.bufferSubData(gl.ARRAY_BUFFER, base_lod_points_offset + level.vertices_offset, tv_data(level.data.points));
gl.bufferSubData(gl.ELEMENT_ARRAY_BUFFER, level.indices_offset, tv_data(level.data.indices));
}
// Per-stroke data (base width, color)
gl.bindTexture(gl.TEXTURE_2D, stroke_texture);
upload_square_rgba16ui_texture(gl, stroke_data, config.stroke_texture_size);
gl.uniform2f(pr.locations['u_res'], width, height);
gl.uniform2f(pr.locations['u_scale'], state.canvas.zoom, state.canvas.zoom);
gl.uniform2f(pr.locations['u_translation'], state.canvas.offset.x, state.canvas.offset.y);
gl.uniform1i(pr.locations['u_stroke_count'], stroke_count);
gl.uniform1i(pr.locations['u_debug_mode'], state.debug.red);
gl.uniform1i(pr.locations['u_stroke_data'], 0);
gl.uniform1i(pr.locations['u_stroke_texture_size'], config.stroke_texture_size);
gl.enableVertexAttribArray(pr.locations['a_pos']);
gl.enableVertexAttribArray(pr.locations['a_a']);
gl.enableVertexAttribArray(pr.locations['a_b']);
gl.enableVertexAttribArray(pr.locations['a_stroke_id']);
gl.enableVertexAttribArray(pr.locations['a_pressure']);
gl.vertexAttribDivisor(pr.locations['a_pos'], 0);
gl.vertexAttribDivisor(pr.locations['a_a'], 1);
gl.vertexAttribDivisor(pr.locations['a_b'], 1);
gl.vertexAttribDivisor(pr.locations['a_stroke_id'], 1);
gl.vertexAttribDivisor(pr.locations['a_pressure'], 1);
for (let b = 0; b < batches_tv.size - 2; b += 2) {
const batch_from = batches_tv.data[b + 0];
const batch_size = batches_tv.data[b + 2] - batch_from;
let lod_level = batches_tv.data[b + 1];
if (config.debug_force_lod !== null) {
lod_level = config.debug_force_lod;
}
const level = lod_levels[lod_level];
if (batch_size > 0) {
//stat_total_vertices += batch_size * level.data.indices.size;
gl.uniform1i(pr.locations['u_circle_points'], level.data.points.size / 2 - 4);
gl.uniform3f(pr.locations['u_debug_color'],
(lod_level * 785892 + 125127) % 8 / 7,
(lod_level * 901824 + 985835) % 8 / 7,
(lod_level * 232181 + 838533) % 8 / 7,
);
// Points (a, b) and stroke ids are stored in separate cpu buffers so that points can be reused (look at stride and offset values)
gl.vertexAttribPointer(pr.locations['a_a'], 2, gl.FLOAT, false, 2 * 4, batch_from * 2 * 4);
gl.vertexAttribPointer(pr.locations['a_b'], 2, gl.FLOAT, false, 2 * 4, batch_from * 2 * 4 + 2 * 4);
gl.vertexAttribIPointer(pr.locations['a_stroke_id'], 1, gl.INT, 4, points_tv.size * 4 + batch_from * 4);
gl.vertexAttribPointer(pr.locations['a_pressure'], 2, gl.UNSIGNED_BYTE, true, 1, points_tv.size * 4 + ids_tv.size * 4 + batch_from);
gl.vertexAttribPointer(pr.locations['a_pos'], 2, gl.FLOAT, false, 2 * 4, base_lod_points_offset + level.vertices_offset, 4);
gl.drawElementsInstanced(gl.TRIANGLES, level.data.indices.size, gl.UNSIGNED_INT, level.indices_offset, batch_size);
}
}
// I don't really know why I need to do this, but it
// makes background patter drawcall work properly
gl.vertexAttribDivisor(pr.locations['a_pos'], 0);
gl.vertexAttribDivisor(pr.locations['a_a'], 0);
gl.vertexAttribDivisor(pr.locations['a_b'], 0);
gl.vertexAttribDivisor(pr.locations['a_stroke_id'], 0);
gl.vertexAttribDivisor(pr.locations['a_pressure'], 0);
tv_pop(batches_tv);
tv_pop(batches_tv);
}
async function draw(state, context, animate, ts) {
const dt = ts - context.last_frame_ts;
const cpu_before = performance.now();
@ -291,173 +404,40 @@ async function draw(state, context, animate, ts) { @@ -291,173 +404,40 @@ async function draw(state, context, animate, ts) {
// "Static" data upload
if (segment_count > 0) {
const pr = programs['main'];
// Last pair (lod unused) to have a proper from;to
tv_add2(context.instance_data_batches, segment_count);
tv_add2(context.instance_data_batches, -1);
gl.clear(gl.DEPTH_BUFFER_BIT); // draw strokes above the images
gl.useProgram(pr.program);
const total_static_size = context.instance_data_points.size * 4 +
context.instance_data_ids.size * 4 +
round_to_pow2(context.instance_data_pressures.size, 4) +
total_lod_floats * 4;
gl.bindBuffer(gl.ARRAY_BUFFER, buffers['b_strokes_static']);
gl.bufferData(gl.ARRAY_BUFFER, total_static_size, gl.STREAM_DRAW);
// Segment points, segment stroke ids, segment pressures
gl.bufferSubData(gl.ARRAY_BUFFER, 0, tv_data(context.instance_data_points));
gl.bufferSubData(gl.ARRAY_BUFFER, context.instance_data_points.size * 4, tv_data(context.instance_data_ids));
gl.bufferSubData(gl.ARRAY_BUFFER, context.instance_data_points.size * 4 + context.instance_data_ids.size * 4,
tv_data(context.instance_data_pressures));
gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, buffers['i_strokes_static']);
gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, total_lod_indices * 4, gl.STREAM_DRAW);
// Upload all variants of LOD vertices/indices
const base_lod_points_offset = context.instance_data_points.size * 4 + context.instance_data_ids.size * 4 + round_to_pow2(context.instance_data_pressures.size, 4);
for (const level of lod_levels) {
gl.bufferSubData(gl.ARRAY_BUFFER, base_lod_points_offset + level.vertices_offset, tv_data(level.data.points));
gl.bufferSubData(gl.ELEMENT_ARRAY_BUFFER, level.indices_offset, tv_data(level.data.indices));
}
// Per-stroke data (base width, color)
gl.bindTexture(gl.TEXTURE_2D, textures['stroke_data']);
upload_square_rgba16ui_texture(gl, context.stroke_data, config.stroke_texture_size);
gl.uniform2f(pr.locations['u_res'], context.canvas.width, context.canvas.height);
gl.uniform2f(pr.locations['u_scale'], state.canvas.zoom, state.canvas.zoom);
gl.uniform2f(pr.locations['u_translation'], state.canvas.offset.x, state.canvas.offset.y);
gl.uniform1i(pr.locations['u_stroke_count'], state.events.length);
gl.uniform1i(pr.locations['u_debug_mode'], state.debug.red);
gl.uniform1i(pr.locations['u_stroke_data'], 0);
gl.uniform1i(pr.locations['u_stroke_texture_size'], config.stroke_texture_size);
gl.enableVertexAttribArray(pr.locations['a_pos']);
gl.enableVertexAttribArray(pr.locations['a_a']);
gl.enableVertexAttribArray(pr.locations['a_b']);
gl.enableVertexAttribArray(pr.locations['a_stroke_id']);
gl.enableVertexAttribArray(pr.locations['a_pressure']);
gl.vertexAttribDivisor(pr.locations['a_pos'], 0);
gl.vertexAttribDivisor(pr.locations['a_a'], 1);
gl.vertexAttribDivisor(pr.locations['a_b'], 1);
gl.vertexAttribDivisor(pr.locations['a_stroke_id'], 1);
gl.vertexAttribDivisor(pr.locations['a_pressure'], 1);
for (let b = 0; b < context.instance_data_batches.size - 2; b += 2) {
const batch_from = context.instance_data_batches.data[b + 0];
const batch_size = context.instance_data_batches.data[b + 2] - batch_from;
let lod_level = context.instance_data_batches.data[b + 1];
if (config.debug_force_lod !== null) {
lod_level = config.debug_force_lod;
}
const level = lod_levels[lod_level];
if (batch_size > 0) {
stat_total_vertices += batch_size * level.data.indices.size;
gl.uniform1i(pr.locations['u_circle_points'], level.data.points.size / 2 - 4);
gl.uniform3f(pr.locations['u_debug_color'],
(lod_level * 785892 + 125127) % 8 / 7,
(lod_level * 901824 + 985835) % 8 / 7,
(lod_level * 232181 + 838533) % 8 / 7,
draw_strokes(state, context.canvas.width, context.canvas.height, programs, gl, lod_levels, segment_count,
total_lod_floats,
total_lod_indices,
context.instance_data_batches,
context.instance_data_points,
context.instance_data_ids,
context.instance_data_pressures,
buffers['b_strokes_static'],
buffers['i_strokes_static'],
textures['stroke_data'],
context.stroke_data,
state.events.length, // not really
);
// Points (a, b) and stroke ids are stored in separate cpu buffers so that points can be reused (look at stride and offset values)
gl.vertexAttribPointer(pr.locations['a_a'], 2, gl.FLOAT, false, 2 * 4, batch_from * 2 * 4);
gl.vertexAttribPointer(pr.locations['a_b'], 2, gl.FLOAT, false, 2 * 4, batch_from * 2 * 4 + 2 * 4);
gl.vertexAttribIPointer(pr.locations['a_stroke_id'], 1, gl.INT, 4, context.instance_data_points.size * 4 + batch_from * 4);
gl.vertexAttribPointer(pr.locations['a_pressure'], 2, gl.UNSIGNED_BYTE, true, 1, context.instance_data_points.size * 4 + context.instance_data_ids.size * 4 + batch_from);
gl.vertexAttribPointer(pr.locations['a_pos'], 2, gl.FLOAT, false, 2 * 4, base_lod_points_offset + level.vertices_offset, 4);
gl.drawElementsInstanced(gl.TRIANGLES, level.data.indices.size, gl.UNSIGNED_INT, level.indices_offset, batch_size);
}
}
// I don't really know why I need to do this, but it
// makes background patter drawcall work properly
gl.vertexAttribDivisor(pr.locations['a_pos'], 0);
gl.vertexAttribDivisor(pr.locations['a_a'], 0);
gl.vertexAttribDivisor(pr.locations['a_b'], 0);
gl.vertexAttribDivisor(pr.locations['a_stroke_id'], 0);
gl.vertexAttribDivisor(pr.locations['a_pressure'], 0);
}
// Dynamic draw (strokes currently being drawn)
if (false && dynamic_segment_count > 0) {
const pr = programs['main']; // same as static
if (dynamic_segment_count > 0) {
// Dynamic strokes should be drawn above static strokes
gl.clear(gl.DEPTH_BUFFER_BIT);
gl.useProgram(pr.program);
gl.uniform1i(pr.locations['u_stroke_count'], dynamic_stroke_count);
gl.uniform1i(pr.locations['u_stroke_data'], 0);
gl.uniform1i(pr.locations['u_stroke_texture_size'], config.dynamic_stroke_texture_size);
gl.bindBuffer(gl.ARRAY_BUFFER, buffers['b_strokes_dynamic']);
// Dynamic data upload
const total_dynamic_size =
context.dynamic_instance_points.size * 4 + context.dynamic_instance_ids.size * 4 +
context.dynamic_instance_pressure.size;
gl.bufferData(gl.ARRAY_BUFFER, total_dynamic_size, gl.STREAM_DRAW);
gl.bufferSubData(gl.ARRAY_BUFFER, 0, tv_data(context.dynamic_instance_points));
gl.bufferSubData(gl.ARRAY_BUFFER, context.dynamic_instance_points.size * 4, tv_data(context.dynamic_instance_ids));
gl.bufferSubData(gl.ARRAY_BUFFER, context.dynamic_instance_points.size * 4 + context.dynamic_instance_ids.size * 4,
tv_data(context.dynamic_instance_pressure));
gl.bindTexture(gl.TEXTURE_2D, textures['dynamic_stroke_data']);
upload_square_rgba16ui_texture(gl, context.dynamic_stroke_data, config.dynamic_stroke_texture_size);
gl.uniform2f(pr.locations['u_res'], context.canvas.width, context.canvas.height);
gl.uniform2f(pr.locations['u_scale'], state.canvas.zoom, state.canvas.zoom);
gl.uniform2f(pr.locations['u_translation'], state.canvas.offset.x, state.canvas.offset.y);
gl.uniform1i(pr.locations['u_stroke_count'], context.dynamic_stroke_count);
gl.uniform1i(pr.locations['u_debug_mode'], state.debug.red);
gl.uniform1i(pr.locations['u_stroke_data'], 0);
gl.uniform1i(pr.locations['u_stroke_texture_size'], config.dynamic_stroke_texture_size);
gl.enableVertexAttribArray(pr.locations['a_a']);
gl.enableVertexAttribArray(pr.locations['a_b']);
gl.enableVertexAttribArray(pr.locations['a_stroke_id']);
gl.enableVertexAttribArray(pr.locations['a_pressure']);
// Points (a, b) and stroke ids are stored in separate cpu buffers so that points can be reused (look at stride and offset values)
if (context.dynamic_instance_ids.size > 1) {
gl.vertexAttribPointer(pr.locations['a_a'], 2, gl.FLOAT, false, 2 * 4, 0);
gl.vertexAttribPointer(pr.locations['a_b'], 2, gl.FLOAT, false, 2 * 4, 2 * 4);
} else {
// A special case where there is no second point. Reuse the first point and handle the zero length segment in the shader
gl.vertexAttribPointer(pr.locations['a_a'], 2, gl.FLOAT, false, 2 * 4, 0);
gl.vertexAttribPointer(pr.locations['a_b'], 2, gl.FLOAT, false, 2 * 4, 0);
}
gl.vertexAttribIPointer(pr.locations['a_stroke_id'], 1, gl.INT, 4, context.dynamic_instance_points.size * 4);
gl.vertexAttribPointer(pr.locations['a_pressure'], 2, gl.UNSIGNED_BYTE, true, 1, context.dynamic_instance_points.size * 4 + context.dynamic_instance_ids.size * 4);
gl.vertexAttribDivisor(pr.locations['a_a'], 1);
gl.vertexAttribDivisor(pr.locations['a_b'], 1);
gl.vertexAttribDivisor(pr.locations['a_stroke_id'], 1);
gl.vertexAttribDivisor(pr.locations['a_pressure'], 1);
gl.drawArraysInstanced(gl.TRIANGLES, 0, 32 * 3 + 6 + 32 * 3, dynamic_segment_count);
gl.vertexAttribDivisor(pr.locations['a_a'], 0);
gl.vertexAttribDivisor(pr.locations['a_b'], 0);
gl.vertexAttribDivisor(pr.locations['a_stroke_id'], 0);
gl.vertexAttribDivisor(pr.locations['a_pressure'], 0);
draw_strokes(state, context.canvas.width, context.canvas.height, programs, gl, lod_levels, dynamic_segment_count,
total_lod_floats,
total_lod_indices,
context.dynamic_instance_batches,
context.dynamic_instance_points,
context.dynamic_instance_ids,
context.dynamic_instance_pressure,
buffers['b_strokes_dynamic'],
buffers['i_strokes_dynamic'],
textures['dynamic_stroke_data'],
context.dynamic_stroke_data,
context.dynamic_stroke_count,
);
}
// HUD: resize handles, etc

45
client/webgl_geometry.js
Unescape View File

@ -84,15 +84,19 @@ function recompute_dynamic_data(state, context) { @@ -84,15 +84,19 @@ function recompute_dynamic_data(state, context) {
tv_ensure(context.dynamic_instance_points, round_to_pow2(total_points * 2, 4096));
tv_ensure(context.dynamic_instance_pressure, round_to_pow2(total_points, 4096));
tv_ensure(context.dynamic_instance_ids, round_to_pow2(total_points, 4096));
tv_ensure(context.dynamic_instance_batches, round_to_pow2(total_strokes * 2, 4096));
tv_clear(context.dynamic_instance_points);
tv_clear(context.dynamic_instance_pressure);
tv_clear(context.dynamic_instance_ids);
tv_clear(context.dynamic_instance_batches);
context.dynamic_stroke_data = ser_ensure(context.dynamic_stroke_data, config.bytes_per_stroke * total_strokes);
ser_clear(context.dynamic_stroke_data);
let stroke_index = 0;
let last_lod = -100;
let batch_size = 0;
for (const player_id in state.players) {
// player has the same data as their current stroke: points, color, width
@ -124,13 +128,54 @@ function recompute_dynamic_data(state, context) { @@ -124,13 +128,54 @@ function recompute_dynamic_data(state, context) {
ser_u16(context.dynamic_stroke_data, b);
ser_u16(context.dynamic_stroke_data, stroke.width);
let lod;
const perceptual_width = stroke.width * state.canvas.zoom;
// Copypaste from the WASM version @lod
if (perceptual_width < 1.9) {
lod = 0;
} else if (perceptual_width < 4.56) {
lod = 1;
} else if (perceptual_width < 6.12) {
lod = 2;
} else if (perceptual_width < 25.08) {
lod = 3;
} else if (perceptual_width < 122.74) {
lod = 4;
} else if (perceptual_width < 1710.0) {
lod = 5;
} else {
lod = 6;
}
if (batch_size > 0 && lod !== last_lod) {
tv_add(context.dynamic_instance_batches, batch_size);
tv_add(context.dynamic_instance_batches, last_lod);
batch_size = 0;
}
batch_size += stroke.points.length;
last_lod = lod;
stroke_index += 1; // TODO: proper player Z order
}
}
}
if (batch_size > 0) {
tv_add(context.dynamic_instance_batches, batch_size);
tv_add(context.dynamic_instance_batches, last_lod);
}
context.dynamic_segment_count = total_points;
context.dynamic_stroke_count = total_strokes;
let batch_base = 0;
for (let i = 0; i < context.dynamic_instance_batches.size; i += 2) {
const nbatches = context.dynamic_instance_batches.data[i * 2 + 0];
context.dynamic_instance_batches.data[i * 2 + 0] = batch_base;
batch_base += nbatches;
}
}
function geometry_start_prestroke(state, player_id) {

5
client/webgl_shaders.js
Unescape View File

@ -323,8 +323,10 @@ function init_webgl(state, context) { @@ -323,8 +323,10 @@ function init_webgl(state, context) {
gl.enable(gl.BLEND);
gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
/*
gl.enable(gl.DEPTH_TEST);
gl.depthFunc(gl.NOTEQUAL);
*/
context.gpu_timer_ext = gl.getExtension('EXT_disjoint_timer_query_webgl2');
if (context.gpu_timer_ext === null) {
@ -358,6 +360,7 @@ function init_webgl(state, context) { @@ -358,6 +360,7 @@ function init_webgl(state, context) {
'b_strokes_static': gl.createBuffer(),
'i_strokes_static': gl.createBuffer(),
'b_strokes_dynamic': gl.createBuffer(),
'i_strokes_dynamic': gl.createBuffer(),
'b_instance_dot': gl.createBuffer(),
'b_instance_grid': gl.createBuffer(),
'b_dot': gl.createBuffer(),
@ -379,7 +382,7 @@ function init_webgl(state, context) { @@ -379,7 +382,7 @@ function init_webgl(state, context) {
gl.bindTexture(gl.TEXTURE_2D, context.textures['dynamic_stroke_data']);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA16UI, config.dynamic_stroke_texture_size, config.dynamic_stroke_texture_size, 0, gl.RGBA_INTEGER, gl.UNSIGNED_SHORT, new Uint16Array(config.dynamic_stroke_texture_size * config.dynamic_stroke_texture_size * 4)); // fill the whole texture once with zeroes to kill a warning about a partial upload
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA16UI, config.stroke_texture_size, config.stroke_texture_size, 0, gl.RGBA_INTEGER, gl.UNSIGNED_SHORT, new Uint16Array(config.stroke_texture_size * config.stroke_texture_size * 4)); // fill the whole texture once with zeroes to kill a warning about a partial upload
gl.bindTexture(gl.TEXTURE_2D, context.textures['ui']);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);

Write Preview
Loading…
Cancel
Save