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Fix floating point precision issues in rendering.

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This commit is contained in:
IntegratedQuantum 2023-03-23 13:20:19 +01:00
parent 642624c94d
commit c2b0428539
1 changed files with 6 additions and 0 deletions
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6
src/graphics.zig
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@ -339,6 +339,8 @@ pub const draw = struct {
pos *= @splat(2, scale); pos *= @splat(2, scale);
pos += translation; pos += translation;
dim *= @splat(2, scale); dim *= @splat(2, scale);
pos = @floor(pos);
dim = @ceil(dim);
imageShader.bind(); imageShader.bind();
@ -359,6 +361,8 @@ pub const draw = struct {
pos *= @splat(2, scale); pos *= @splat(2, scale);
pos += translation; pos += translation;
dim *= @splat(2, scale); dim *= @splat(2, scale);
pos = @floor(pos);
dim = @ceil(dim);
c.glUniform2f(uniforms.screen, @intToFloat(f32, Window.width), @intToFloat(f32, Window.height)); c.glUniform2f(uniforms.screen, @intToFloat(f32, Window.width), @intToFloat(f32, Window.height));
c.glUniform2f(uniforms.start, pos[0], pos[1]); c.glUniform2f(uniforms.start, pos[0], pos[1]);
@ -914,6 +918,8 @@ const TextRendering = struct {
y *= draw.scale; y *= draw.scale;
x += draw.translation[0]; x += draw.translation[0];
y += draw.translation[1]; y += draw.translation[1];
x = @floor(x);
y = @ceil(y);
c.glUniform1i(uniforms.fontEffects, fontEffects); c.glUniform1i(uniforms.fontEffects, fontEffects);
if(fontEffects & 0x1000000 != 0) { // bold if(fontEffects & 0x1000000 != 0) { // bold
c.glUniform2f(uniforms.offset, @intToFloat(f32, glyph.bearing[0])*draw.scale + x, @intToFloat(f32, glyph.bearing[1])*draw.scale + y - 1); c.glUniform2f(uniforms.offset, @intToFloat(f32, glyph.bearing[0])*draw.scale + x, @intToFloat(f32, glyph.bearing[1])*draw.scale + y - 1);