bgfx/examples/21-deferred/fs_deferred_clear_uav.sc
kingscallop 436b7fab9e
Adds UAV support for D3D12, Vulkan and reworked for OpenGL, D3D11 (#2119)
* Adds UAV support for D3D12, Vulkan and reworked support for OpenGL, D3D11

UAV support is now uniform across compute and draw.
To set a UAV you just use bgfx::setImage() and IMAGE2D in the shader, just like in compute.
Due to these changes shaders will have to be recompiled.

The changes include:
	- D3D11 requires patching of the UAV slot number (which is now done by modifying the DXBC instead of using a macro)
	- If the DXBC binary includes a debug chunk, that is also patched to match the new slot number
	- All the other renderers don't need any kind of patching
	- There are some shader annotations to better convert the UAV format used in hlsl to spirv

Possibility of further enhancements:
	- bgfx::setViewFrameBuffer() only supports binding to a framebuffer or, using BGFX_INVALID_HANDLE, to bind the default backbuffer. This doesn't allow for the case where there is no need to bind to either one of them, for example when using a fragment shader only to read and write to an UAV.

* Bump shader version, because they need to be recompiled.
2020-10-04 21:51:41 -07:00

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Python

$input v_texcoord0
/*
* Copyright 2011-2020 Branimir Karadzic. All rights reserved.
* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
*/
#include <bgfx_compute.sh>
IMAGE2D_RW(i_light, rgba8, 2);
void main()
{
ivec2 coord = ivec2(gl_FragCoord.xy);
imageStore(i_light, coord, vec4(0.0, 0.0, 0.0, 0.0));
}