From 7f10e1678e4ff72791a544cbb9da669f373dc78d Mon Sep 17 00:00:00 2001 From: Iago Toral Quiroga Date: Wed, 1 Oct 2014 13:55:32 +0200 Subject: [PATCH] i965: free scratch buffers when destroying the context If scratch space is needed for a shader stage we try to reuse the last scratch buffer bound to that stage. If we can't, we free the old scratch buffer and allocate a new one. This means we always keep the last scratch buffer for a particular shader stage around for the entire life span of the context. These buffers are being reported by Valgrind as definitely lost after destroying the OpenGL context. For example, for the geometry shader stage: ==18350== 248 bytes in 1 blocks are definitely lost in loss record 85 of 150 ==18350== at 0x4C2CC70: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so) ==18350== by 0xA1B35D6: drm_intel_gem_bo_alloc_internal (intel_bufmgr_gem.c:724) ==18350== by 0xA1B383F: drm_intel_gem_bo_alloc (intel_bufmgr_gem.c:794) ==18350== by 0xA1AEFA3: drm_intel_bo_alloc (intel_bufmgr.c:52) ==18350== by 0x9D08E31: brw_get_scratch_bo (brw_program.c:226) ==18350== by 0x9D2A0F2: do_gs_prog (brw_vec4_gs.c:280) ==18350== by 0x9D2A635: brw_gs_precompile (brw_vec4_gs.c:401) ==18350== by 0x9D14F68: brw_shader_precompile(gl_context*, gl_shader_program*) (brw_shader.cpp:76) ==18350== by 0x9D157B8: brw_link_shader (brw_shader.cpp:269) ==18350== by 0x9B0941E: _mesa_glsl_link_shader (ir_to_mesa.cpp:3038) ==18350== by 0x99AE4ED: link_program (shaderapi.c:917) ==18350== by 0x99AF365: _mesa_LinkProgram (shaderapi.c:1385) So make sure that by the time we destroy the context we check if we have live scratch buffers for the various stages and release them if that is the case. Reviewed-by: Jordan Justen --- src/mesa/drivers/dri/i965/brw_context.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c index 786e6f5dc07..972e458f437 100644 --- a/src/mesa/drivers/dri/i965/brw_context.c +++ b/src/mesa/drivers/dri/i965/brw_context.c @@ -908,6 +908,12 @@ intelDestroyContext(__DRIcontext * driContextPriv) brw_draw_destroy(brw); drm_intel_bo_unreference(brw->curbe.curbe_bo); + if (brw->vs.base.scratch_bo) + drm_intel_bo_unreference(brw->vs.base.scratch_bo); + if (brw->gs.base.scratch_bo) + drm_intel_bo_unreference(brw->gs.base.scratch_bo); + if (brw->wm.base.scratch_bo) + drm_intel_bo_unreference(brw->wm.base.scratch_bo); drm_intel_gem_context_destroy(brw->hw_ctx);