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mesa: retain gl_shader_programs after glDeleteProgram if they are in use 

Fixes regressions from c505d6d852.

Switching from using gl_shader_program to gl_program for the pipline
objects CurrentProgram array meant we were freeing gl_shader_programs
immediately after glDeleteProgram was called, but the spec states
the program should only get deleted once it is no longer in use.

To work around this we add a new ReferencedPrograms array to track
gl_shader_programs in use.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Timothy Arceri 2017-01-26 19:29:20 +11:00 committed by Timothy Arceri
parent 300900516d
commit e6506b3cd2
5 changed files with 17 additions and 9 deletions
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2
src/mesa/drivers/common/meta.c
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@ -962,7 +962,7 @@ _mesa_meta_end(struct gl_context *ctx)
* program object must be NULL. _mesa_use_program is a no-op
* in that case.
*/
_mesa_use_program(ctx, i, save->Program[i], &ctx->Shader);
_mesa_use_program(ctx, i, NULL, save->Program[i], &ctx->Shader);
/* Do this *before* killing the reference. :)
*/

2
src/mesa/main/mtypes.h
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@ -2875,6 +2875,8 @@ struct gl_pipeline_object
*/
struct gl_program *CurrentProgram[MESA_SHADER_STAGES];
struct gl_shader_program *ReferencedPrograms[MESA_SHADER_STAGES];
struct gl_program *_CurrentFragmentProgram;
/**

6
src/mesa/main/pipelineobj.c
View File

@ -60,8 +60,10 @@ _mesa_delete_pipeline_object(struct gl_context *ctx,
_mesa_reference_program(ctx, &obj->_CurrentFragmentProgram, NULL);
for (i = 0; i < MESA_SHADER_STAGES; i++)
for (i = 0; i < MESA_SHADER_STAGES; i++) {
_mesa_reference_program(ctx, &obj->CurrentProgram[i], NULL);
_mesa_reference_shader_program(ctx, &obj->ReferencedPrograms[i], NULL);
}
_mesa_reference_shader_program(ctx, &obj->ActiveProgram, NULL);
mtx_destroy(&obj->Mutex);
@ -227,7 +229,7 @@ use_program_stage(struct gl_context *ctx, GLenum type,
if (shProg && shProg->_LinkedShaders[stage])
prog = shProg->_LinkedShaders[stage]->Program;
_mesa_use_program(ctx, stage, prog, pipe);
_mesa_use_program(ctx, stage, shProg, prog, pipe);
}
/**

14
src/mesa/main/shaderapi.c
View File

@ -1128,7 +1128,7 @@ _mesa_link_program(struct gl_context *ctx, struct gl_shader_program *shProg)
if (shProg->_LinkedShaders[stage])
prog = shProg->_LinkedShaders[stage]->Program;
_mesa_use_program(ctx, stage, prog, ctx->_Shader);
_mesa_use_program(ctx, stage, shProg, prog, ctx->_Shader);
}
}
@ -1243,7 +1243,8 @@ _mesa_active_program(struct gl_context *ctx, struct gl_shader_program *shProg,
static void
use_program(struct gl_context *ctx, gl_shader_stage stage,
struct gl_program *new_prog, struct gl_pipeline_object *shTarget)
struct gl_shader_program *shProg, struct gl_program *new_prog,
struct gl_pipeline_object *shTarget)
{
struct gl_program **target;
@ -1279,6 +1280,9 @@ use_program(struct gl_context *ctx, gl_shader_stage stage,
break;
}
_mesa_reference_shader_program(ctx,
&shTarget->ReferencedPrograms[stage],
shProg);
_mesa_reference_program(ctx, target, new_prog);
return;
}
@ -1296,7 +1300,7 @@ _mesa_use_shader_program(struct gl_context *ctx,
struct gl_program *new_prog = NULL;
if (shProg && shProg->_LinkedShaders[i])
new_prog = shProg->_LinkedShaders[i]->Program;
use_program(ctx, i, new_prog, &ctx->Shader);
use_program(ctx, i, shProg, new_prog, &ctx->Shader);
}
_mesa_active_program(ctx, shProg, "glUseProgram");
}
@ -2180,10 +2184,10 @@ invalid_value:
void
_mesa_use_program(struct gl_context *ctx, gl_shader_stage stage,
struct gl_program *prog,
struct gl_shader_program *shProg, struct gl_program *prog,
struct gl_pipeline_object *shTarget)
{
use_program(ctx, stage, prog, shTarget);
use_program(ctx, stage, shProg, prog, shTarget);
}

2
src/mesa/main/shaderapi.h
View File

@ -215,7 +215,7 @@ _mesa_ProgramParameteri(GLuint program, GLenum pname, GLint value);
void
_mesa_use_program(struct gl_context *ctx, gl_shader_stage stage,
struct gl_program *prog,
struct gl_shader_program *shProg, struct gl_program *prog,
struct gl_pipeline_object *shTarget);
extern void