import type { GlFullscreenProgram, GlRenderState, GlRenderTarget } from '@flighthq/types/contract';
/** Clears a render target to fully transparent and binds it as the current framebuffer. */
export declare function clearGlRenderTarget(state: GlRenderState, target: GlRenderTarget): void;
export declare function compileGlFullscreenProgram(gl: WebGL2RenderingContext, fragmentSource: string): GlFullscreenProgram;
/**
 * Draws a fullscreen pass: binds `inputs[i]` to texture unit i and its `u_texture{i}` sampler, binds
 * `dest` (or the canvas when null), sets normal premultiplied-alpha blending, calls `setUniforms` for
 * per-pass uploads, then draws the quad.
 */
export declare function drawGlFullscreenPass(state: GlRenderState, program: Readonly<GlFullscreenProgram>, inputs: ReadonlyArray<WebGLTexture>, dest: Readonly<GlRenderTarget> | null, setUniforms: (gl: WebGL2RenderingContext, program: Readonly<GlFullscreenProgram>) => void): void;
//# sourceMappingURL=glFullscreenPass.d.ts.map