From: Keith Whitwell Date: Thu, 16 Sep 2010 09:45:52 +0000 (+0100) Subject: llvmpipe: add LP_PERF flag to disable various aspects of rasterization X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5f00819cb382bdb70c29e2db3c6ff22a879bf10f;p=mesa.git llvmpipe: add LP_PERF flag to disable various aspects of rasterization Allows disabling various operations (mainly texture-related, but will grow) to try & identify bottlenecks. Unlike LP_DEBUG, this is active even in release builds - which is necessary for performance investigation. --- diff --git a/src/gallium/drivers/llvmpipe/lp_clear.c b/src/gallium/drivers/llvmpipe/lp_clear.c index 3e8c4109251..b486b243eb5 100644 --- a/src/gallium/drivers/llvmpipe/lp_clear.c +++ b/src/gallium/drivers/llvmpipe/lp_clear.c @@ -36,6 +36,7 @@ #include "lp_clear.h" #include "lp_context.h" #include "lp_setup.h" +#include "lp_debug.h" /** @@ -54,5 +55,8 @@ llvmpipe_clear(struct pipe_context *pipe, if (llvmpipe->no_rast) return; + if (LP_PERF & PERF_NO_DEPTH) + buffers &= ~PIPE_CLEAR_DEPTHSTENCIL; + lp_setup_clear( llvmpipe->setup, rgba, depth, stencil, buffers ); } diff --git a/src/gallium/drivers/llvmpipe/lp_debug.h b/src/gallium/drivers/llvmpipe/lp_debug.h index add43e4fca2..588cda52ad0 100644 --- a/src/gallium/drivers/llvmpipe/lp_debug.h +++ b/src/gallium/drivers/llvmpipe/lp_debug.h @@ -50,6 +50,19 @@ st_print_current(void); #define DEBUG_FENCE 0x2000 #define DEBUG_MEM 0x4000 +/* Performance flags. These are active even on release builds. + */ +#define PERF_TEX_MEM 0x1 /* minimize texture cache footprint */ +#define PERF_NO_MIP_LINEAR 0x2 /* MIP_FILTER_LINEAR ==> _NEAREST */ +#define PERF_NO_MIPMAPS 0x4 /* MIP_FILTER_NONE always */ +#define PERF_NO_LINEAR 0x8 /* FILTER_NEAREST always */ +#define PERF_NO_TEX 0x10 /* sample white always */ +#define PERF_NO_BLEND 0x20 /* disable blending */ +#define PERF_NO_DEPTH 0x40 /* disable depth buffering entirely */ +#define PERF_NO_ALPHATEST 0x80 /* disable alpha testing */ + + +extern int LP_PERF; #ifdef DEBUG extern int LP_DEBUG; diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c b/src/gallium/drivers/llvmpipe/lp_screen.c index 0d40dc50201..f920607d053 100644 --- a/src/gallium/drivers/llvmpipe/lp_screen.c +++ b/src/gallium/drivers/llvmpipe/lp_screen.c @@ -68,6 +68,19 @@ static const struct debug_named_value lp_debug_flags[] = { }; #endif +int LP_PERF = 0; +static const struct debug_named_value lp_perf_flags[] = { + { "texmem", PERF_TEX_MEM, NULL }, + { "no_mipmap", PERF_NO_MIPMAPS, NULL }, + { "no_linear", PERF_NO_LINEAR, NULL }, + { "no_mip_linear", PERF_NO_MIP_LINEAR, NULL }, + { "no_tex", PERF_NO_TEX, NULL }, + { "no_blend", PERF_NO_BLEND, NULL }, + { "no_depth", PERF_NO_DEPTH, NULL }, + { "no_alphatest", PERF_NO_ALPHATEST, NULL }, + DEBUG_NAMED_VALUE_END +}; + static const char * llvmpipe_get_vendor(struct pipe_screen *screen) @@ -372,6 +385,8 @@ llvmpipe_create_screen(struct sw_winsys *winsys) LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 ); #endif + LP_PERF = debug_get_flags_option("LP_PERF", lp_perf_flags, 0 ); + if (!screen) return NULL; diff --git a/src/gallium/drivers/llvmpipe/lp_setup.c b/src/gallium/drivers/llvmpipe/lp_setup.c index e6a81967615..6674d281d1e 100644 --- a/src/gallium/drivers/llvmpipe/lp_setup.c +++ b/src/gallium/drivers/llvmpipe/lp_setup.c @@ -651,11 +651,12 @@ lp_setup_set_fragment_sampler_views(struct lp_setup_context *setup, jit_tex->row_stride[j] = lp_tex->row_stride[j]; jit_tex->img_stride[j] = lp_tex->img_stride[j]; - if (!jit_tex->data[j]) { + if ((LP_PERF & PERF_TEX_MEM) || + !jit_tex->data[j]) { /* out of memory - use dummy tile memory */ jit_tex->data[j] = lp_dummy_tile; - jit_tex->width = TILE_SIZE; - jit_tex->height = TILE_SIZE; + jit_tex->width = TILE_SIZE/8; + jit_tex->height = TILE_SIZE/8; jit_tex->depth = 1; jit_tex->last_level = 0; jit_tex->row_stride[j] = 0; diff --git a/src/gallium/drivers/llvmpipe/lp_state_blend.c b/src/gallium/drivers/llvmpipe/lp_state_blend.c index 5b39d9d1a91..6bba9077d1b 100644 --- a/src/gallium/drivers/llvmpipe/lp_state_blend.c +++ b/src/gallium/drivers/llvmpipe/lp_state_blend.c @@ -38,13 +38,23 @@ #include "lp_screen.h" #include "lp_context.h" #include "lp_state.h" +#include "lp_debug.h" static void * llvmpipe_create_blend_state(struct pipe_context *pipe, const struct pipe_blend_state *blend) { - return mem_dup(blend, sizeof(*blend)); + struct pipe_blend_state *state = mem_dup(blend, sizeof *blend); + int i; + + if (LP_PERF & PERF_NO_BLEND) { + state->independent_blend_enable = 0; + for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) + state->rt[i].blend_enable = 0; + } + + return state; } @@ -100,7 +110,22 @@ static void * llvmpipe_create_depth_stencil_state(struct pipe_context *pipe, const struct pipe_depth_stencil_alpha_state *depth_stencil) { - return mem_dup(depth_stencil, sizeof(*depth_stencil)); + struct pipe_depth_stencil_alpha_state *state; + + state = mem_dup(depth_stencil, sizeof *depth_stencil); + + if (LP_PERF & PERF_NO_DEPTH) { + state->depth.enabled = 0; + state->depth.writemask = 0; + state->stencil[0].enabled = 0; + state->stencil[1].enabled = 0; + } + + if (LP_PERF & PERF_NO_ALPHATEST) { + state->alpha.enabled = 0; + } + + return state; } diff --git a/src/gallium/drivers/llvmpipe/lp_state_sampler.c b/src/gallium/drivers/llvmpipe/lp_state_sampler.c index 715ce2f02e4..17a4a0ed02d 100644 --- a/src/gallium/drivers/llvmpipe/lp_state_sampler.c +++ b/src/gallium/drivers/llvmpipe/lp_state_sampler.c @@ -37,6 +37,7 @@ #include "lp_context.h" #include "lp_screen.h" #include "lp_state.h" +#include "lp_debug.h" #include "state_tracker/sw_winsys.h" @@ -44,7 +45,22 @@ static void * llvmpipe_create_sampler_state(struct pipe_context *pipe, const struct pipe_sampler_state *sampler) { - return mem_dup(sampler, sizeof(*sampler)); + struct pipe_sampler_state *state = mem_dup(sampler, sizeof *sampler); + + if (LP_PERF & PERF_NO_MIP_LINEAR) { + if (state->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR) + state->min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST; + } + + if (LP_PERF & PERF_NO_MIPMAPS) + state->min_mip_filter = PIPE_TEX_MIPFILTER_NONE; + + if (LP_PERF & PERF_NO_LINEAR) { + state->mag_img_filter = PIPE_TEX_FILTER_NEAREST; + state->min_img_filter = PIPE_TEX_FILTER_NEAREST; + } + + return state; } diff --git a/src/gallium/drivers/llvmpipe/lp_state_surface.c b/src/gallium/drivers/llvmpipe/lp_state_surface.c index 4b135aaf8ba..cd1a5b19803 100644 --- a/src/gallium/drivers/llvmpipe/lp_state_surface.c +++ b/src/gallium/drivers/llvmpipe/lp_state_surface.c @@ -60,6 +60,10 @@ llvmpipe_set_framebuffer_state(struct pipe_context *pipe, util_copy_framebuffer_state(&lp->framebuffer, fb); + if (LP_PERF & PERF_NO_DEPTH) { + pipe_surface_reference(&lp->framebuffer.zsbuf, NULL); + } + /* Tell draw module how deep the Z/depth buffer is */ if (lp->framebuffer.zsbuf) { int depth_bits; diff --git a/src/gallium/drivers/llvmpipe/lp_tex_sample.c b/src/gallium/drivers/llvmpipe/lp_tex_sample.c index 65208dd5d5c..4e026cc8ffb 100644 --- a/src/gallium/drivers/llvmpipe/lp_tex_sample.c +++ b/src/gallium/drivers/llvmpipe/lp_tex_sample.c @@ -48,6 +48,7 @@ #include "gallivm/lp_bld_tgsi.h" #include "lp_jit.h" #include "lp_tex_sample.h" +#include "lp_debug.h" /** @@ -179,6 +180,11 @@ lp_llvm_sampler_soa_emit_fetch_texel(const struct lp_build_sampler_soa *base, struct lp_llvm_sampler_soa *sampler = (struct lp_llvm_sampler_soa *)base; assert(unit < PIPE_MAX_SAMPLERS); + + if (LP_PERF & PERF_NO_TEX) { + lp_build_sample_nop(type, texel); + return; + } lp_build_sample_soa(builder, &sampler->dynamic_state.static_state[unit],