From 1fce9d58cc70deaff284e1d9d0ffcb15b61e7595 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Thu, 6 May 2010 15:10:51 -0600 Subject: softpipe: fix dangling references to shaders in the TGSI executor If a shader was bound to the fragment shader TGSI executor and it was then deleted and a new shader was allocated at the same address as the old shader, the new fragment shader would not get properly bound to the TGSI machine and we'd wind up using the old one. This would not have been a problem if shaders were refcounted. Now the TGSI machine is owned by the context rather than the quad pipeline's shader stage so that the softpipe_delete_fs_state() function can access it. Fixes sporadic failures of the piglit fp-long-alu test (fd.o bug 27989). --- src/gallium/drivers/softpipe/sp_context.c | 5 +++++ src/gallium/drivers/softpipe/sp_context.h | 2 ++ src/gallium/drivers/softpipe/sp_quad_fs.c | 24 +++++------------------- src/gallium/drivers/softpipe/sp_state_fs.c | 11 ++++++++++- 4 files changed, 22 insertions(+), 20 deletions(-) (limited to 'src/gallium/drivers/softpipe') diff --git a/src/gallium/drivers/softpipe/sp_context.c b/src/gallium/drivers/softpipe/sp_context.c index f6e2b80d46..fea3520fa5 100644 --- a/src/gallium/drivers/softpipe/sp_context.c +++ b/src/gallium/drivers/softpipe/sp_context.c @@ -36,6 +36,7 @@ #include "util/u_math.h" #include "util/u_memory.h" #include "util/u_inlines.h" +#include "tgsi/tgsi_exec.h" #include "sp_clear.h" #include "sp_context.h" #include "sp_flush.h" @@ -123,6 +124,8 @@ softpipe_destroy( struct pipe_context *pipe ) } } + tgsi_exec_machine_destroy(softpipe->fs_machine); + FREE( softpipe ); } @@ -293,6 +296,8 @@ softpipe_create_context( struct pipe_screen *screen, softpipe->vertex_tex_cache[i] = sp_create_tex_tile_cache( &softpipe->pipe ); } + softpipe->fs_machine = tgsi_exec_machine_create(); + /* setup quad rendering stages */ softpipe->quad.shade = sp_quad_shade_stage(softpipe); softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe); diff --git a/src/gallium/drivers/softpipe/sp_context.h b/src/gallium/drivers/softpipe/sp_context.h index 92607874b6..aa69625768 100644 --- a/src/gallium/drivers/softpipe/sp_context.h +++ b/src/gallium/drivers/softpipe/sp_context.h @@ -140,6 +140,8 @@ struct softpipe_context { struct sp_sampler_varient *frag_samplers_list[PIPE_MAX_SAMPLERS]; } tgsi; + struct tgsi_exec_machine *fs_machine; + /** The primitive drawing context */ struct draw_context *draw; diff --git a/src/gallium/drivers/softpipe/sp_quad_fs.c b/src/gallium/drivers/softpipe/sp_quad_fs.c index 8ae5a7f028..907e94b59b 100644 --- a/src/gallium/drivers/softpipe/sp_quad_fs.c +++ b/src/gallium/drivers/softpipe/sp_quad_fs.c @@ -50,8 +50,8 @@ struct quad_shade_stage { struct quad_stage stage; /**< base class */ - struct tgsi_exec_machine *machine; - struct tgsi_exec_vector *inputs, *outputs; + + /* no other fields at this time */ }; @@ -70,9 +70,8 @@ quad_shade_stage(struct quad_stage *qs) static INLINE boolean shade_quad(struct quad_stage *qs, struct quad_header *quad) { - struct quad_shade_stage *qss = quad_shade_stage( qs ); struct softpipe_context *softpipe = qs->softpipe; - struct tgsi_exec_machine *machine = qss->machine; + struct tgsi_exec_machine *machine = softpipe->fs_machine; /* run shader */ return softpipe->fs->run( softpipe->fs, machine, quad ); @@ -108,9 +107,8 @@ shade_quads(struct quad_stage *qs, struct quad_header *quads[], unsigned nr) { - struct quad_shade_stage *qss = quad_shade_stage( qs ); struct softpipe_context *softpipe = qs->softpipe; - struct tgsi_exec_machine *machine = qss->machine; + struct tgsi_exec_machine *machine = softpipe->fs_machine; unsigned i, pass = 0; for (i = 0; i < PIPE_MAX_CONSTANT_BUFFERS; i++) { @@ -139,11 +137,10 @@ shade_quads(struct quad_stage *qs, static void shade_begin(struct quad_stage *qs) { - struct quad_shade_stage *qss = quad_shade_stage(qs); struct softpipe_context *softpipe = qs->softpipe; softpipe->fs->prepare( softpipe->fs, - qss->machine, + softpipe->fs_machine, (struct tgsi_sampler **) softpipe->tgsi.frag_samplers_list ); @@ -154,10 +151,6 @@ shade_begin(struct quad_stage *qs) static void shade_destroy(struct quad_stage *qs) { - struct quad_shade_stage *qss = (struct quad_shade_stage *) qs; - - tgsi_exec_machine_destroy(qss->machine); - FREE( qs ); } @@ -174,16 +167,9 @@ sp_quad_shade_stage( struct softpipe_context *softpipe ) qss->stage.run = shade_quads; qss->stage.destroy = shade_destroy; - qss->machine = tgsi_exec_machine_create(); - if (!qss->machine) - goto fail; - return &qss->stage; fail: - if (qss && qss->machine) - tgsi_exec_machine_destroy(qss->machine); - FREE(qss); return NULL; } diff --git a/src/gallium/drivers/softpipe/sp_state_fs.c b/src/gallium/drivers/softpipe/sp_state_fs.c index 7f072f5a26..816e0c18bd 100644 --- a/src/gallium/drivers/softpipe/sp_state_fs.c +++ b/src/gallium/drivers/softpipe/sp_state_fs.c @@ -36,6 +36,7 @@ #include "draw/draw_context.h" #include "draw/draw_vs.h" #include "tgsi/tgsi_dump.h" +#include "tgsi/tgsi_exec.h" #include "tgsi/tgsi_scan.h" #include "tgsi/tgsi_parse.h" @@ -95,10 +96,18 @@ softpipe_bind_fs_state(struct pipe_context *pipe, void *fs) void softpipe_delete_fs_state(struct pipe_context *pipe, void *fs) { + struct softpipe_context *softpipe = softpipe_context(pipe); struct sp_fragment_shader *state = fs; assert(fs != softpipe_context(pipe)->fs); - + + if (softpipe->fs_machine->Tokens == state->shader.tokens) { + /* unbind the shader from the tgsi executor if we're + * deleting it. + */ + tgsi_exec_machine_bind_shader(softpipe->fs_machine, NULL, 0, NULL); + } + state->delete( state ); } -- cgit v1.2.3