OpenHarmony/third_party_mesa3d
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Fast path when rebinding the same texture in single context environment

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If there is no shared context, there is no purpose in rebinding the same
texture.  In some artificial tests this improves performance 10% - 30%.
This commit is contained in:
Ian Romanick
2009-06-03 17:49:05 +01:00
parent 54576130a8
commit 7f8000db8b
1 changed files with 12 additions and 0 deletions
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12
src/mesa/main/texobj.c
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@@ -945,6 +945,7 @@ _mesa_BindTexture( GLenum target, GLuint texName )
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
struct gl_texture_object *newTexObj = NULL, *defaultTexObj = NULL;
GLint targetIndex;
GLboolean early_out = GL_FALSE;
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
@@ -998,6 +999,17 @@ _mesa_BindTexture( GLenum target, GLuint texName )
assert(valid_texture_object(newTexObj));
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
if ((ctx->Shared->RefCount == 1)
&& (newTexObj == texUnit->CurrentTex[targetIndex])) {
early_out = GL_TRUE;
}
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
if (early_out) {
return;
}
/* flush before changing binding */
FLUSH_VERTICES(ctx, _NEW_TEXTURE);