diff options
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_shader.c | 54 |
1 files changed, 49 insertions, 5 deletions
diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c index 1bd617fa147..33c0db6d907 100644 --- a/src/gallium/drivers/radeonsi/si_shader.c +++ b/src/gallium/drivers/radeonsi/si_shader.c @@ -4001,22 +4001,65 @@ static void si_shader_dump_disassembly(const struct radeon_shader_binary *binary static void si_shader_dump_stats(struct si_screen *sscreen, struct si_shader_config *conf, + unsigned num_inputs, unsigned code_size, struct pipe_debug_callback *debug, unsigned processor) { + unsigned lds_increment = sscreen->b.chip_class >= CIK ? 512 : 256; + unsigned lds_per_wave = 0; + unsigned max_simd_waves = 10; + + /* Compute LDS usage for PS. */ + if (processor == TGSI_PROCESSOR_FRAGMENT) { + /* The minimum usage per wave is (num_inputs * 36). The maximum + * usage is (num_inputs * 36 * 16). + * We can get anything in between and it varies between waves. + * + * Other stages don't know the size at compile time or don't + * allocate LDS per wave, but instead they do it per thread group. + */ + lds_per_wave = conf->lds_size * lds_increment + + align(num_inputs * 36, lds_increment); + } + + /* Compute the per-SIMD wave counts. */ + if (conf->num_sgprs) { + if (sscreen->b.chip_class >= VI) + max_simd_waves = MIN2(max_simd_waves, 800 / conf->num_sgprs); + else + max_simd_waves = MIN2(max_simd_waves, 512 / conf->num_sgprs); + } + + if (conf->num_vgprs) + max_simd_waves = MIN2(max_simd_waves, 256 / conf->num_vgprs); + + /* LDS is 64KB per CU (4 SIMDs), divided into 16KB blocks per SIMD + * that PS can use. + */ + if (lds_per_wave) + max_simd_waves = MIN2(max_simd_waves, 16384 / lds_per_wave); + if (r600_can_dump_shader(&sscreen->b, processor)) { fprintf(stderr, "*** SHADER STATS ***\n" - "SGPRS: %d\nVGPRS: %d\nCode Size: %d bytes\nLDS: %d blocks\n" - "Scratch: %d bytes per wave\n********************\n", + "SGPRS: %d\n" + "VGPRS: %d\n" + "Code Size: %d bytes\n" + "LDS: %d blocks\n" + "Scratch: %d bytes per wave\n" + "Max Waves: %d\n" + "********************\n", conf->num_sgprs, conf->num_vgprs, code_size, - conf->lds_size, conf->scratch_bytes_per_wave); + conf->lds_size, conf->scratch_bytes_per_wave, + max_simd_waves); } pipe_debug_message(debug, SHADER_INFO, - "Shader Stats: SGPRS: %d VGPRS: %d Code Size: %d LDS: %d Scratch: %d", + "Shader Stats: SGPRS: %d VGPRS: %d Code Size: %d " + "LDS: %d Scratch: %d Max Waves: %d", conf->num_sgprs, conf->num_vgprs, code_size, - conf->lds_size, conf->scratch_bytes_per_wave); + conf->lds_size, conf->scratch_bytes_per_wave, + max_simd_waves); } void si_shader_dump(struct si_screen *sscreen, struct si_shader *shader, @@ -4027,6 +4070,7 @@ void si_shader_dump(struct si_screen *sscreen, struct si_shader *shader, si_shader_dump_disassembly(&shader->binary, debug); si_shader_dump_stats(sscreen, &shader->config, + shader->selector->info.num_inputs, shader->binary.code_size, debug, processor); } |