Im trying to render a shader, binding everything and setting the uniforms seems to be working fine (keep in mind i setup my own shader environment since im using a simple blur and minecrafts shader system confuses me).
My problem is that whenever i try to draw my shader onto my framebuffer i just get a white screen and the console gives me a OpenGL Error (to be exact: OpenGL API ERROR: 1282 (GL_INVALID_OPERATION error generated. Array object is not active.))
It also tells me that my mistake is on the line where i do: "tesselator.end();", meaning that the drawing of the tesselator seems to wrong.
Thats how im currently trying to draw:
Tesselator tesselator = Tesselator.getInstance();
BufferBuilder bufferBuilder = tesselator.getBuilder();
GlStateManager._bindTexture(framebuffer.getFramebuffer().texture());
bufferBuilder.begin(VertexFormat.Mode.QUADS, DefaultVertexFormat.POSITION_TEX);
bufferBuilder.vertex(0f, height, 0f).uv(0f, 1f).endVertex();
bufferBuilder.vertex(width, height, 0f).uv(1f, 1f).endVertex();
bufferBuilder.vertex(width, 0, 0f).uv(1f, 0f).endVertex();
bufferBuilder.vertex(0f, 0f, 0f).uv(0f, 1f).endVertex();
tesselator.end();
Hope someone can help me, if there are any questions lmk!
