I want to draw a texture that 40*20 to 10*10,tried to use GlStateManager.scale but got a wrong display,and then I found this 

drawScaledCustomSizeModalRect(int x, int y, float u, float v, int uWidth, int vHeight, int width, int height, float tileWidth, float tileHeight)

but I don't know what those parameters mean.

Could some one tell me how to use it?

My texture(png) is 256*256 and texture offsetX is 0,offsetY is 20, width and height to display is 40 * 20 and zoom to 10*10.

Edited March 17, 20187 yr by bxzsj
solved

I think that its used to draw text

4 minutes ago, Cadiboo said:

I think that its used to draw text

So,which method should I use to zoom a texture?

did this inside my drawGuiContainerBackgroundLayer()

drawModalRectWithCustomSizedTexture(20, 20, 0, 0, width, height, 10, 10);

17 minutes ago, Cadiboo said:

did this inside my drawGuiContainerBackgroundLayer()

drawModalRectWithCustomSizedTexture(20, 20, 0, 0, width, height, 10, 10);

I just tried it , but this method zoom a whole texture(256*256) to 10*10

Just now, bxzsj said:

I just tried it , but this method zoom a whole texture(256*256) to 10*10

so just modify it to fit your needs

I think that both drawScaledCustomSizeModalRect and drawModalRectWithCustomSizedTexture take an entire texture and scale it

1 minute ago, Cadiboo said:

I think that both drawScaledCustomSizeModalRect and drawModalRectWithCustomSizedTexture take an entire texture and scale it

Do this defind the location:

(double)(x + 0), (double)(y + height), (double)this.zLevel

and this defind texture area to display: ?

.tex(((textureX + 0) * 0.00390625F), ((textureY + height) * 0.00390625F))

 

7 minutes ago, Cadiboo said:

take an entire texture and scale it

I think that you can only scale an entire texture (set with this.mc.getTextureManager().bindTexture()), not a part of a texture

2 minutes ago, bxzsj said:

(double)this.zLevel

Z level sets what the texture is rendered above, for example items are rendered at zLevel 250 and Tooltips are rendered at zLevel 300

1 hour ago, Cadiboo said:

so just modify it to fit your needs

Thank you, I defind a method :

public void drawZoomTexturedModalRect(int x, int y, int textureX, int textureY, int width, int height, float textureAreaWidth, float textureAreaHeight, float textureWidth, float textureHeight)
{
	float f = 1.0F / textureWidth;
	float f1 = 1.0F / textureHeight;
	Tessellator tessellator = Tessellator.getInstance();
	VertexBuffer vertexbuffer = tessellator.getBuffer();
	vertexbuffer.begin(7, DefaultVertexFormats.POSITION_TEX);
	vertexbuffer.pos((double) x, (double) (y + height), (double) this.zLevel).tex((double) (textureX * f), (double) ((textureY + textureAreaHeight) * f1)).endVertex();
	vertexbuffer.pos((double) (x + width), (double) (y + height), (double) this.zLevel).tex((double) ((textureX + textureAreaWidth) * f), (double) ((textureY + textureAreaHeight) * f1)).endVertex();
	vertexbuffer.pos((double) (x + width), (double) y, (double) this.zLevel).tex((double) ((textureX + textureAreaWidth) * f), (double) (textureY * f1)).endVertex();
	vertexbuffer.pos((double) x, (double) y, (double) this.zLevel).tex((double) (textureX * f), (double) (textureY * f1)).endVertex();
	tessellator.draw();
}

it works.