[Mesa-dev] [PATCH 11/24] st/mesa: sink and simplify texBaseFormat getting for sampler states

Samuel Pitoiset samuel.pitoiset at gmail.com
Tue Jun 20 19:26:58 UTC 2017


_mesa_base_tex_image() returns NULL for bindless textures and this 
crashes. See below.

Thread 41 "OGL_Dispatch_3" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffee973e700 (LWP 17264)]
0x00007fffdfdf0b61 in st_convert_sampler (st=st at entry=0x9497ef0, 
texobj=texobj at entry=0x7ffeb9581ac0, msamp=msamp at entry=0x7ffeb8012bd0, 
sampler=sampler at entry=0x7ffee973d760) at state_tracker/st_atom_sampler.c:148
148	      GLenum texBaseFormat = _mesa_base_tex_image(texobj)->_BaseFormat;
(gdb) bt
#0  0x00007fffdfdf0b61 in st_convert_sampler (st=st at entry=0x9497ef0, 
texobj=texobj at entry=0x7ffeb9581ac0, msamp=msamp at entry=0x7ffeb8012bd0, 
sampler=sampler at entry=0x7ffee973d760) at state_tracker/st_atom_sampler.c:148
#1  0x00007fffdfe0f82b in st_NewTextureHandle (ctx=<optimized out>, 
texObj=0x7ffeb9581ac0, sampObj=0x7ffeb8012bd0) at 
state_tracker/st_cb_texture.c:2924
#2  0x00007fffdfd96926 in get_texture_handle (ctx=0x9466920, 
texObj=0x7ffeb9581ac0, sampObj=0x7ffeb8012bd0) at main/texturebindless.c:239
#3  0x0000000002dede77 in (anonymous 
namespace)::ProcessGLGetTextureSamplerHandleARB((anonymous 
namespace)::CGLFunctionTable const&, (anonymous namespace)::CWorkItem 
const&) (dispatch=..., item=...)
     at 
/media/BobBuild/dawnofwar3/Built/Release/64/Libraries/Feral/Feral3D/GeneratedProcessGLFunctions.cpp:20247
#4  0x0000000002df19c0 in (anonymous namespace)::CWorkItem::operator() 
(dispatch=..., this=<optimized out>)
     at 
/Volumes/BobSource/dawnofwar3/Companies/Feral/Development/Libraries/Feral/Feral3D/Source/OpenGL/FeralThreadedGL/FeralThreadedGL.cpp:784
#5  0x0000000002df19c0 in FeralThreadedGL::CGLThread::WorkLoop() 
(this=0x94b1b80) at 
/Volumes/BobSource/dawnofwar3/Companies/Feral/Development/Libraries/Feral/Feral3D/Source/OpenGL/FeralThreadedGL/FeralThreadedGL.cpp:1956
#6  0x000000000473667f in std::execute_native_thread_routine(void*) 
(__p=0x8a56300) at 
../../../../../gcc-6.3.0/libstdc++-v3/src/c++11/thread.cc:83
#7  0x00007ffff4a6b297 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fffee80325f in clone () at /usr/lib/libc.so.6

I think you have to keep _mesa_texture_base_format() here.

On 06/13/2017 08:22 AM, Timothy Arceri wrote:
> Reviewed-by: Timothy Arceri <tarceri at itsqueeze.com>
> 
> On 13/06/17 04:18, Marek Olšák wrote:
>> From: Marek Olšák <marek.olsak at amd.com>
>>
>> ---
>>   src/mesa/state_tracker/st_atom_sampler.c | 17 +++++++++--------
>>   1 file changed, 9 insertions(+), 8 deletions(-)
>>
>> diff --git a/src/mesa/state_tracker/st_atom_sampler.c 
>> b/src/mesa/state_tracker/st_atom_sampler.c
>> index ea231f3..e7968bb 100644
>> --- a/src/mesa/state_tracker/st_atom_sampler.c
>> +++ b/src/mesa/state_tracker/st_atom_sampler.c
>> @@ -112,23 +112,20 @@ gl_filter_to_img_filter(GLenum filter)
>>   /**
>>    * Convert a gl_sampler_object to a pipe_sampler_state object.
>>    */
>>   void
>>   st_convert_sampler(const struct st_context *st,
>>                      const struct gl_texture_object *texobj,
>>                      const struct gl_sampler_object *msamp,
>>                      struct pipe_sampler_state *sampler)
>>   {
>>      struct gl_context *ctx = st->ctx;
>> -   GLenum texBaseFormat;
>> -
>> -   texBaseFormat = _mesa_texture_base_format(texobj);
>>      memset(sampler, 0, sizeof(*sampler));
>>      sampler->wrap_s = gl_wrap_xlate(msamp->WrapS);
>>      sampler->wrap_t = gl_wrap_xlate(msamp->WrapT);
>>      sampler->wrap_r = gl_wrap_xlate(msamp->WrapR);
>>      sampler->min_img_filter = gl_filter_to_img_filter(msamp->MinFilter);
>>      sampler->min_mip_filter = gl_filter_to_mip_filter(msamp->MinFilter);
>>      sampler->mag_img_filter = gl_filter_to_img_filter(msamp->MagFilter);
>> @@ -154,20 +151,21 @@ st_convert_sampler(const struct st_context *st,
>>         sampler->min_lod = tmp;
>>         assert(sampler->min_lod <= sampler->max_lod);
>>      }
>>      /* For non-black borders... */
>>      if (msamp->BorderColor.ui[0] ||
>>          msamp->BorderColor.ui[1] ||
>>          msamp->BorderColor.ui[2] ||
>>          msamp->BorderColor.ui[3]) {
>>         const GLboolean is_integer = texobj->_IsIntegerFormat;
>> +      GLenum texBaseFormat = _mesa_base_tex_image(texobj)->_BaseFormat;
>>         if (st->apply_texture_swizzle_to_border_color) {
>>            const struct st_texture_object *stobj = 
>> st_texture_object_const(texobj);
>>            const struct pipe_sampler_view *sv = NULL;
>>            /* Just search for the first used view. We can do this 
>> because the
>>               swizzle is per-texture, not per context. */
>>            /* XXX: clean that up to not use the sampler view at all */
>>            for (unsigned i = 0; i < stobj->num_sampler_views; ++i) {
>>               if (stobj->sampler_views[i]) {
>> @@ -200,25 +198,28 @@ st_convert_sampler(const struct st_context *st,
>>            st_translate_color(&msamp->BorderColor,
>>                               &sampler->border_color,
>>                               texBaseFormat, is_integer);
>>         }
>>      }
>>      sampler->max_anisotropy = (msamp->MaxAnisotropy == 1.0 ?
>>                                 0 : (GLuint) msamp->MaxAnisotropy);
>>      /* If sampling a depth texture and using shadow comparison */
>> -   if ((texBaseFormat == GL_DEPTH_COMPONENT ||
>> -        (texBaseFormat == GL_DEPTH_STENCIL && 
>> !texobj->StencilSampling)) &&
>> -       msamp->CompareMode == GL_COMPARE_R_TO_TEXTURE) {
>> -      sampler->compare_mode = PIPE_TEX_COMPARE_R_TO_TEXTURE;
>> -      sampler->compare_func = 
>> st_compare_func_to_pipe(msamp->CompareFunc);
>> +   if (msamp->CompareMode == GL_COMPARE_R_TO_TEXTURE) {
>> +      GLenum texBaseFormat = _mesa_base_tex_image(texobj)->_BaseFormat;
>> +
>> +      if (texBaseFormat == GL_DEPTH_COMPONENT ||
>> +          (texBaseFormat == GL_DEPTH_STENCIL && 
>> !texobj->StencilSampling)) {
>> +         sampler->compare_mode = PIPE_TEX_COMPARE_R_TO_TEXTURE;
>> +         sampler->compare_func = 
>> st_compare_func_to_pipe(msamp->CompareFunc);
>> +      }
>>      }
>>      sampler->seamless_cube_map =
>>         ctx->Texture.CubeMapSeamless || msamp->CubeMapSeamless;
>>   }
>>   static void
>>   convert_sampler_from_unit(const struct st_context *st,
>>                             struct pipe_sampler_state *sampler,
>>
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