diff options
Diffstat (limited to 'mesalib/src/mesa/swrast/s_texcombine.c')
| -rw-r--r-- | mesalib/src/mesa/swrast/s_texcombine.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/mesalib/src/mesa/swrast/s_texcombine.c b/mesalib/src/mesa/swrast/s_texcombine.c index 7e07f4f8a..32d7c0944 100644 --- a/mesalib/src/mesa/swrast/s_texcombine.c +++ b/mesalib/src/mesa/swrast/s_texcombine.c @@ -602,6 +602,14 @@ _swrast_texture_span( struct gl_context *ctx, SWspan *span ) if (!swrast->TexelBuffer) { #ifdef _OPENMP const GLint maxThreads = omp_get_max_threads(); + + /* TexelBuffer memory allocation needs to be done in a critical section + * as this code runs in a parallel loop. + * When entering the section, first check if TexelBuffer has been + * initialized already by another thread while this thread was waiting. + */ + #pragma omp critical + if (!swrast->TexelBuffer) { #else const GLint maxThreads = 1; #endif @@ -611,8 +619,12 @@ _swrast_texture_span( struct gl_context *ctx, SWspan *span ) * thread. */ swrast->TexelBuffer = - malloc(ctx->Const.FragmentProgram.MaxTextureImageUnits * maxThreads * + malloc(ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits * maxThreads * SWRAST_MAX_WIDTH * 4 * sizeof(GLfloat)); +#ifdef _OPENMP + } /* critical section */ +#endif + if (!swrast->TexelBuffer) { _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture_combine"); return; |