i965: Reorganize prog_data->total_scratch code a bit.
Cc: "12.0" <mesa-stable@lists.freedesktop.org> Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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@ -5976,23 +5976,26 @@ fs_visitor::allocate_registers(bool allow_spilling)
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schedule_instructions(SCHEDULE_POST);
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if (last_scratch > 0) {
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unsigned max_scratch_size = 2 * 1024 * 1024;
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prog_data->total_scratch = brw_get_scratch_size(last_scratch);
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if (devinfo->is_haswell && stage == MESA_SHADER_COMPUTE) {
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/* According to the MEDIA_VFE_STATE's "Per Thread Scratch Space"
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* field documentation, Haswell supports a minimum of 2kB of
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* scratch space for compute shaders, unlike every other stage
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* and platform.
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*/
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prog_data->total_scratch = MAX2(prog_data->total_scratch, 2048);
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} else if (devinfo->gen <= 7 && stage == MESA_SHADER_COMPUTE) {
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/* According to the MEDIAVFE_STATE's "Per Thread Scratch Space"
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* field documentation, platforms prior to Haswell measure scratch
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* size linearly with a range of [1kB, 12kB] and 1kB granularity.
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*/
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prog_data->total_scratch = ALIGN(last_scratch, 1024);
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assert(prog_data->total_scratch < 12 * 1024);
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if (stage == MESA_SHADER_COMPUTE) {
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if (devinfo->is_haswell) {
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/* According to the MEDIA_VFE_STATE's "Per Thread Scratch Space"
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* field documentation, Haswell supports a minimum of 2kB of
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* scratch space for compute shaders, unlike every other stage
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* and platform.
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*/
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prog_data->total_scratch = MAX2(prog_data->total_scratch, 2048);
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} else if (devinfo->gen <= 7) {
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/* According to the MEDIA_VFE_STATE's "Per Thread Scratch Space"
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* field documentation, platforms prior to Haswell measure scratch
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* size linearly with a range of [1kB, 12kB] and 1kB granularity.
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*/
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prog_data->total_scratch = ALIGN(last_scratch, 1024);
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max_scratch_size = 12 * 1024;
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}
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}
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/* We currently only support up to 2MB of scratch space. If we
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@ -6005,7 +6008,7 @@ fs_visitor::allocate_registers(bool allow_spilling)
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* See 3D-Media-GPGPU Engine > Media GPGPU Pipeline >
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* Thread Group Tracking > Local Memory/Scratch Space.
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*/
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assert(prog_data->total_scratch < 2 * 1024 * 1024);
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assert(prog_data->total_scratch < max_scratch_size);
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}
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}
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