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move atlas rect to info

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Atlas offset and image size were originally stored in the ptcl but are not tile dependent. Moving these to info saves 8 bytes per image tile.
This commit is contained in:
Chad Brokaw 2023-03-10 01:42:50 -05:00
parent 165b3a083b
commit a8585781cd
5 changed files with 14 additions and 16 deletions
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14
shader/coarse.wgsl
View file

@ -126,13 +126,11 @@ fn write_grad(ty: u32, index: u32, info_offset: u32) {
cmd_offset += 3u;
}
fn write_image(xy: u32, width_height: u32, info_offset: u32) {
alloc_cmd(4u);
fn write_image(info_offset: u32) {
alloc_cmd(2u);
ptcl[cmd_offset] = CMD_IMAGE;
ptcl[cmd_offset + 1u] = info_offset;
ptcl[cmd_offset + 2u] = xy;
ptcl[cmd_offset + 3u] = width_height;
cmd_offset += 4u;
cmd_offset += 2u;
}
fn write_begin_clip() {
@ -387,12 +385,10 @@ fn main(
}
}
// DRAWTAG_FILL_IMAGE
case 0x1c8u: {
case 0x248u: {
let linewidth = bitcast<f32>(info_bin_data[di]);
if write_path(tile, linewidth) {
let xy = scene[dd];
let width_height = scene[dd + 1u];
write_image(xy, width_height, di + 1u);
write_image(di + 1u);
}
}
// DRAWTAG_BEGIN_CLIP

6
shader/draw_leaf.wgsl
View file

@ -125,7 +125,7 @@ fn main(
linewidth *= sqrt(abs(matrx.x * matrx.w - matrx.y * matrx.z));
}
switch tag_word {
// DRAWTAG_FILL_COLOR, DRAWTAG_FILL_IMAGE
// DRAWTAG_FILL_COLOR
case 0x44u: {
info[di] = bitcast<u32>(linewidth);
}
@ -172,7 +172,7 @@ fn main(
info[di + 10u] = bitcast<u32>(roff);
}
// DRAWTAG_FILL_IMAGE
case 0x1c8u: {
case 0x248u: {
info[di] = bitcast<u32>(linewidth);
let inv_det = 1.0 / (matrx.x * matrx.w - matrx.y * matrx.z);
let inv_mat = inv_det * vec4(matrx.w, -matrx.y, -matrx.z, matrx.x);
@ -183,6 +183,8 @@ fn main(
info[di + 4u] = bitcast<u32>(inv_mat.w);
info[di + 5u] = bitcast<u32>(inv_tr.x);
info[di + 6u] = bitcast<u32>(inv_tr.y);
info[di + 7u] = scene[dd];
info[di + 8u] = scene[dd + 1u];
}
default: {}
}

6
shader/fine.wgsl
View file

@ -86,14 +86,14 @@ fn read_rad_grad(cmd_ix: u32) -> CmdRadGrad {
fn read_image(cmd_ix: u32) -> CmdImage {
let info_offset = ptcl[cmd_ix + 1u];
let xy = ptcl[cmd_ix + 2u];
let width_height = ptcl[cmd_ix + 3u];
let m0 = bitcast<f32>(info[info_offset]);
let m1 = bitcast<f32>(info[info_offset + 1u]);
let m2 = bitcast<f32>(info[info_offset + 2u]);
let m3 = bitcast<f32>(info[info_offset + 3u]);
let matrx = vec4(m0, m1, m2, m3);
let xlat = vec2(bitcast<f32>(info[info_offset + 4u]), bitcast<f32>(info[info_offset + 5u]));
let xy = info[info_offset + 6u];
let width_height = info[info_offset + 7u];
// The following are not intended to be bitcasts
let x = f32(xy >> 16u);
let y = f32(xy & 0xffffu);
@ -307,7 +307,7 @@ fn main(
rgba[i] = rgba[i] * (1.0 - fg_i.a) + fg_i;
}
}
cmd_ix += 4u;
cmd_ix += 2u;
}
// CMD_BEGIN_CLIP
case 9u: {

2
shader/shared/drawtag.wgsl
View file

@ -19,7 +19,7 @@ let DRAWTAG_NOP = 0u;
let DRAWTAG_FILL_COLOR = 0x44u;
let DRAWTAG_FILL_LIN_GRADIENT = 0x114u;
let DRAWTAG_FILL_RAD_GRADIENT = 0x2dcu;
let DRAWTAG_FILL_IMAGE = 0x1c8u;
let DRAWTAG_FILL_IMAGE = 0x248u;
let DRAWTAG_BEGIN_CLIP = 0x9u;
let DRAWTAG_END_CLIP = 0x21u;

2
src/encoding/draw.rs
View file

@ -38,7 +38,7 @@ impl DrawTag {
pub const RADIAL_GRADIENT: Self = Self(0x2dc);
/// Image fill.
pub const IMAGE: Self = Self(0x1c8);
pub const IMAGE: Self = Self(0x248);
/// Begin layer/clip.
pub const BEGIN_CLIP: Self = Self(0x9);