36 lines
1.2 KiB
Java
36 lines
1.2 KiB
Java
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package xyz.valnet.engine.graphics;
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import static org.lwjgl.opengl.GL20.*;
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import xyz.valnet.engine.shaders.SimpleShader;
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public class Drawing {
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private static Texture bound = null;
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public static void drawSprite(Sprite sprite, int x, int y) {
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drawSprite(sprite, x, y, sprite.width, sprite.height);
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}
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public static void drawSprite(Sprite sprite, int x, int y, int width, int height) {
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// lazy texture binding
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if(bound != sprite.atlas) {
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if(bound != null) bound.unbind();
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sprite.atlas.bind();
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}
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glBegin(GL_QUADS);
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glVertexAttrib2f(SimpleShader.TEX_COORD, sprite.sourceBoxUV.x, sprite.sourceBoxUV.y);
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glVertex2f(x, y);
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glVertexAttrib2f(SimpleShader.TEX_COORD, sprite.sourceBoxUV.x + sprite.sourceBoxUV.z, sprite.sourceBoxUV.y);
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glVertex2f(x + width, y);
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glVertexAttrib2f(SimpleShader.TEX_COORD, sprite.sourceBoxUV.x + sprite.sourceBoxUV.z, sprite.sourceBoxUV.y + sprite.sourceBoxUV.w);
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glVertex2f(x + width, y + height);
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glVertexAttrib2f(SimpleShader.TEX_COORD, sprite.sourceBoxUV.x, sprite.sourceBoxUV.y + sprite.sourceBoxUV.w);
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glVertex2f(x, y + height);
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glEnd();
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}
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}
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