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Minor optimization to renderGuiTank() #29

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Minor optimization to renderGuiTank() #29

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21 changes: 10 additions & 11 deletions src/main/java/com/enderio/core/client/render/RenderUtil.java
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Original file line number Diff line number Diff line change
Expand Up @@ -575,6 +575,11 @@ public static void renderGuiTank(FluidStack fluid, int capacity, int amount, dou
}
}

double minU = icon.getMinU();
double maxU = icon.getMaxU();
double minV = icon.getMinV();
double maxV = icon.getMaxV();

int renderAmount = (int) Math.max(Math.min(height, amount * height / capacity), 1);
int posY = (int) (y + height - renderAmount);

Expand All @@ -583,28 +588,22 @@ public static void renderGuiTank(FluidStack fluid, int capacity, int amount, dou
GL11.glColor3ub((byte) (color >> 16 & 0xFF), (byte) (color >> 8 & 0xFF), (byte) (color & 0xFF));

GL11.glEnable(GL11.GL_BLEND);
Tessellator tessellator = Tessellator.instance;
tessellator.startDrawingQuads();
for (int i = 0; i < width; i += 16) {
int drawWidth = (int) Math.min(width - i, 16);
int drawX = (int) (x + i);
for (int j = 0; j < renderAmount; j += 16) {
int drawWidth = (int) Math.min(width - i, 16);
int drawHeight = Math.min(renderAmount - j, 16);

int drawX = (int) (x + i);
int drawY = posY + j;

double minU = icon.getMinU();
double maxU = icon.getMaxU();
double minV = icon.getMinV();
double maxV = icon.getMaxV();

Tessellator tessellator = Tessellator.instance;
tessellator.startDrawingQuads();
tessellator.addVertexWithUV(drawX, drawY + drawHeight, 0, minU, minV + (maxV - minV) * drawHeight / 16F);
tessellator.addVertexWithUV(drawX + drawWidth, drawY + drawHeight, 0, minU + (maxU - minU) * drawWidth / 16F, minV + (maxV - minV) * drawHeight / 16F);
tessellator.addVertexWithUV(drawX + drawWidth, drawY, 0, minU + (maxU - minU) * drawWidth / 16F, minV);
tessellator.addVertexWithUV(drawX, drawY, 0, minU, minV);
tessellator.draw();
}
}
tessellator.draw();
GL11.glDisable(GL11.GL_BLEND);
}

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