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8d55b6155c
The following syntax can now be used to set the initial content of buffers: @buf size (reg) val0, val1, ... If the buffer is not fully initialized, remaining values will be set to zero. Signed-off-by: Job Noorman <jnoorman@igalia.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28625> |
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| examples | ||
| a4xx.cc | ||
| a6xx.cc | ||
| ir3_asm.cc | ||
| ir3_asm.h | ||
| main.cc | ||
| main.h | ||
| meson.build | ||
| README.rst | ||
Overview ======== Computerator is a tool to launch compute shaders, written in assembly. The main purpose is to have an easy way to experiment with instructions without dealing with the entire compiler stack (which makes controlling the order of instructions, the registers chosen, etc, difficult). The choice of compute shaders is simply because there is far less state setup required. Headers ------- The shader assembly can be prefixed with headers to control state setup: * ``@localsize X, Y, Z`` - configures local workgroup size * ``@buf SZ (cN.c)`` - configures an SSBO of the specified size (in dwords). The order of the ``@buf`` headers determines the index, ie the first ``@buf`` header is ``g[0]``, the second ``g[1]``, and so on. The iova of the buffer is written as a vec2 to ``cN.c`` * ``@const(cN.c)`` configures a const vec4 starting at specified const register, ie ``@const(c1.x) 1.0, 2.0, 3.0, 4.0`` will populate ``c1.xyzw`` with ``vec4(1.0, 2.0, 3.0, 4.0)`` * ``@invocationid(rN.c)`` will populate a vec3 starting at the specified register with the local invocation-id * ``@wgid(rN.c)`` will populate a vec3 starting at the specified register with the workgroup-id (must be a high-reg, ie. ``r48.x`` and above) * ``@numwg(cN.c)`` will populate a vec3 starting at the specified const register Example ------- ``` @localsize 32, 1, 1 @buf 32 ; g[0] @const(c0.x) 0.0, 0.0, 0.0, 0.0 @const(c1.x) 1.0, 2.0, 3.0, 4.0 @wgid(r48.x) ; r48.xyz @invocationid(r0.x) ; r0.xyz @numwg(c2.x) ; c2.xyz mov.u32u32 r0.y, r0.x (rpt5)nop stib.untyped.1d.u32.1 g[0] + r0.y, r0.x end nop ``` Usage ----- ``` cat myshader.asm | ./computerator --disasm --groups=4,4,4 ```