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Fix texture artifacts when rendering monitors

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- Adds a 1px margin around every glyph. This is generally empty,
   with the exception of teletext characters where it continues their
   pattern.
 - Uses GL_CLAMP with the font texture.

Closes #300
This commit is contained in:
SquidDev
2017-07-10 22:20:07 +01:00
parent 94d701b1f7
commit 1cf3d78eac
3 changed files with 19 additions and 10 deletions
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25
src/main/java/dan200/computercraft/client/gui/FixedWidthFontRenderer.java
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@@ -20,7 +20,7 @@ import java.util.Arrays;
public class FixedWidthFontRenderer
{
public static ResourceLocation font = new ResourceLocation( "computercraft", "textures/gui/term_font.png" );
private static ResourceLocation font = new ResourceLocation( "computercraft", "textures/gui/term_font.png" );
public static ResourceLocation background = new ResourceLocation( "computercraft", "textures/gui/term_background.png" );
public static int FONT_HEIGHT = 9;
@@ -52,12 +52,15 @@ public class FixedWidthFontRenderer
float g = (float)colour[1];
float b = (float)colour[2];
renderer.pos( x, y, 0.0 ).tex( (double) (column * FONT_WIDTH) / 256.0, (double) (row * FONT_HEIGHT ) / 256.0 ).color( r, g, b, 1.0f ).endVertex();
renderer.pos( x, y + FONT_HEIGHT, 0.0 ).tex( (double) (column * FONT_WIDTH) / 256.0, (double) ((row + 1) * FONT_HEIGHT) / 256.0 ).color( r, g, b, 1.0f ).endVertex();
renderer.pos( x + FONT_WIDTH, y, 0.0 ).tex( (double) ((column + 1) * FONT_WIDTH) / 256.0, (double) (row * FONT_HEIGHT) / 256.0 ).color( r, g, b, 1.0f ).endVertex();
renderer.pos( x + FONT_WIDTH, y, 0.0 ).tex( (double) ((column + 1) * FONT_WIDTH) / 256.0, (double) (row * FONT_HEIGHT) / 256.0 ).color( r, g, b, 1.0f ).endVertex();
renderer.pos( x, y + FONT_HEIGHT, 0.0 ).tex( (double) (column * FONT_WIDTH) / 256.0, (double) ((row + 1) * FONT_HEIGHT) / 256.0 ).color( r, g, b, 1.0f ).endVertex();
renderer.pos( x + FONT_WIDTH, y + FONT_HEIGHT, 0.0 ).tex( (double) ((column + 1) * FONT_WIDTH) / 256.0, (double) ((row + 1) * FONT_HEIGHT) / 256.0 ).color( r, g, b, 1.0f ).endVertex();
int xStart = 1 + column * (FONT_WIDTH + 2);
int yStart = 1 + row * (FONT_HEIGHT + 2);
renderer.pos( x, y, 0.0 ).tex( xStart / 256.0, yStart / 256.0 ).color( r, g, b, 1.0f ).endVertex();
renderer.pos( x, y + FONT_HEIGHT, 0.0 ).tex( xStart / 256.0, (yStart + FONT_HEIGHT) / 256.0 ).color( r, g, b, 1.0f ).endVertex();
renderer.pos( x + FONT_WIDTH, y, 0.0 ).tex( (xStart + FONT_WIDTH) / 256.0, yStart / 256.0 ).color( r, g, b, 1.0f ).endVertex();
renderer.pos( x + FONT_WIDTH, y, 0.0 ).tex( (xStart + FONT_WIDTH) / 256.0, yStart / 256.0 ).color( r, g, b, 1.0f ).endVertex();
renderer.pos( x, y + FONT_HEIGHT, 0.0 ).tex( xStart / 256.0, (yStart + FONT_HEIGHT) / 256.0 ).color( r, g, b, 1.0f ).endVertex();
renderer.pos( x + FONT_WIDTH, y + FONT_HEIGHT, 0.0 ).tex( (xStart + FONT_WIDTH) / 256.0, (yStart + FONT_HEIGHT) / 256.0 ).color( r, g, b, 1.0f ).endVertex();
}
private void drawQuad( VertexBuffer renderer, double x, double y, int color, double width, Palette p, boolean greyscale )
@@ -164,7 +167,7 @@ public class FixedWidthFontRenderer
if( s != null && textColour != null )
{
// Bind the font texture
m_textureManager.bindTexture( font );
bindFont();
// Draw the quads
drawStringTextPart( x, y, s, textColour, greyScale, p );
@@ -179,4 +182,10 @@ public class FixedWidthFontRenderer
}
return s.length() * FONT_WIDTH;
}
public void bindFont()
{
m_textureManager.bindTexture( font );
GlStateManager.glTexParameteri( GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_S, GL11.GL_CLAMP );
}
}