swrast: silence unused var warnings in non-debug builds

[mesa.git] / src / mesa / swrast / s_texcombine.c

diff --git a/src/mesa/swrast/s_texcombine.c b/src/mesa/swrast/s_texcombine.c
index 80b9dff3cc26be0e6ec096c41f4207c37d1f88a8..c67c356c1e01f305dcc7c98f17f36073b76d467b 100644 (file)
--- a/src/mesa/swrast/s_texcombine.c
+++ b/src/mesa/swrast/s_texcombine.c
@@ -45,7 +45,7 @@ typedef float (*float4_array)[4];
 /**
  * Return array of texels for given unit.
  */
-static INLINE float4_array
+static inline float4_array
 get_texel_array(SWcontext *swrast, GLuint unit)
 {
 #ifdef _OPENMP
@@ -590,6 +590,26 @@ _swrast_texture_span( struct gl_context *ctx, SWspan *span )
    float4_array primary_rgba;
    GLuint unit;
 
+   if (!swrast->TexelBuffer) {
+#ifdef _OPENMP
+      const GLint maxThreads = omp_get_max_threads();
+#else
+      const GLint maxThreads = 1;
+#endif
+
+      /* TexelBuffer is also global and normally shared by all SWspan
+       * instances; when running with multiple threads, create one per
+       * thread.
+       */
+      swrast->TexelBuffer =
+        (GLfloat *) MALLOC(ctx->Const.MaxTextureImageUnits * maxThreads *
+                           MAX_WIDTH * 4 * sizeof(GLfloat));
+      if (!swrast->TexelBuffer) {
+        _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture_combine");
+        return;
+      }
+   }
+
    primary_rgba = (float4_array) malloc(span->end * 4 * sizeof(GLfloat));
 
    if (!primary_rgba) {