Examples with PackRenderTargetDirectives net.coderbot.iris.shaderpack.PackRenderTargetDirectives used on opensource projects

Example 1 with PackRenderTargetDirectives

use of net.coderbot.iris.shaderpack.PackRenderTargetDirectives in project Iris by IrisShaders.

the class ClearPassCreator method createClearPasses.

public static ImmutableList<ClearPass> createClearPasses(RenderTargets renderTargets, boolean fullClear, PackRenderTargetDirectives renderTargetDirectives) {
    final int maxDrawBuffers = GlStateManager._getInteger(GL21C.GL_MAX_DRAW_BUFFERS);
    // Sort buffers by their clear color so we can group up glClear calls.
    Map<Vector4f, IntList> clearByColor = new HashMap<>();
    renderTargetDirectives.getRenderTargetSettings().forEach((bufferI, settings) -> {
        // unboxed
        final int buffer = bufferI;
        if (fullClear || settings.shouldClear()) {
            Vector4f defaultClearColor;
            if (buffer == 0) {
                // colortex0 is cleared to the fog color (with 1.0 alpha) by default.
                defaultClearColor = null;
            } else if (buffer == 1) {
                // colortex1 is cleared to solid white (with 1.0 alpha) by default.
                defaultClearColor = new Vector4f(1.0f, 1.0f, 1.0f, 1.0f);
            } else {
                // all other buffers are cleared to solid black (with 0.0 alpha) by default.
                defaultClearColor = new Vector4f(0.0f, 0.0f, 0.0f, 0.0f);
            }
            Vector4f clearColor = settings.getClearColor().orElse(defaultClearColor);
            clearByColor.computeIfAbsent(clearColor, color -> new IntArrayList()).add(buffer);
        }
    });
    List<ClearPass> clearPasses = new ArrayList<>();
    clearByColor.forEach((clearColor, buffers) -> {
        int startIndex = 0;
        while (startIndex < buffers.size()) {
            // clear up to the maximum number of draw buffers per each clear pass.
            // This allows us to handle having more than 8 buffers with the same clear color on systems with
            // a max draw buffers of 8 (ie, most systems).
            int[] clearBuffers = new int[Math.min(buffers.size() - startIndex, maxDrawBuffers)];
            for (int i = 0; i < clearBuffers.length; i++) {
                clearBuffers[i] = buffers.getInt(startIndex);
                startIndex++;
            }
            // only clear depth if this is the first clear pass
            clearPasses.add(new ClearPass(clearColor, renderTargets.createFramebufferWritingToAlt(clearBuffers), clearPasses.isEmpty()));
            clearPasses.add(new ClearPass(clearColor, renderTargets.createFramebufferWritingToMain(clearBuffers), false));
        }
    });
    return ImmutableList.copyOf(clearPasses);
}