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Implement renderer.readPixels when not using SDL_Renderer

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This commit is contained in:
Joshua Granick
2018-02-15 11:53:01 -08:00
parent f22fa77431
commit d1a4e0cfea
1 changed files with 55 additions and 10 deletions
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65
lime/_backend/native/NativeRenderer.hx
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@@ -135,20 +135,65 @@ class NativeRenderer {
var imageBuffer:ImageBuffer = null;
#if (!macro && lime_cffi)
#if !cs
imageBuffer = NativeCFFI.lime_renderer_read_pixels (handle, rect, new ImageBuffer (new UInt8Array (Bytes.alloc (0))));
#else
var data:Dynamic = NativeCFFI.lime_renderer_read_pixels (handle, rect, null);
if (data != null) {
imageBuffer = new ImageBuffer (new UInt8Array (@:privateAccess new Bytes (data.data.length, data.data.b)), data.width, data.height, data.bitsPerPixel);
switch (parent.context) {
case OPENGL (gl):
var windowWidth = parent.window.__width * parent.window.__scale;
var windowHeight = parent.window.__height * parent.window.__scale;
var x = Std.int (rect.x);
var y = Std.int ((windowHeight - rect.y) - rect.height);
var width = Std.int (rect.width);
var height = Std.int (rect.height);
var buffer = Bytes.alloc (width * height * 4);
gl.readPixels (x, y, width, height, gl.RGBA, gl.UNSIGNED_BYTE, buffer);
var rowLength = width * 4;
var srcPosition = (height - 1) * rowLength;
var destPosition = 0;
var temp = Bytes.alloc (rowLength);
var rows = Std.int (height / 2);
while (rows-- > 0) {
temp.blit (0, buffer, destPosition, rowLength);
buffer.blit (destPosition, buffer, srcPosition, rowLength);
buffer.blit (srcPosition, temp, 0, rowLength);
destPosition += rowLength;
srcPosition -= rowLength;
}
imageBuffer = new ImageBuffer (new UInt8Array (buffer), width, height, 32, RGBA32);
default:
#if (!macro && lime_cffi)
#if !cs
imageBuffer = NativeCFFI.lime_renderer_read_pixels (handle, rect, new ImageBuffer (new UInt8Array (Bytes.alloc (0))));
#else
var data:Dynamic = NativeCFFI.lime_renderer_read_pixels (handle, rect, null);
if (data != null) {
imageBuffer = new ImageBuffer (new UInt8Array (@:privateAccess new Bytes (data.data.length, data.data.b)), data.width, data.height, data.bitsPerPixel);
}
#end
#end
if (imageBuffer != null) {
imageBuffer.format = RGBA32;
}
}
#end
#end
if (imageBuffer != null) {
imageBuffer.format = RGBA32;
return new Image (imageBuffer);
}