intel: Refactor intelSpanRenderStart

Factor the mapping loops from intelSpanRenderStart() into
intel_span_map_buffers(). This in preparation for the next commit,
which resolves the buffers before mapping.

Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Chad Versace <chad.versace@linux.intel.com>

diff --git a/src/mesa/drivers/dri/intel/intel_span.c b/src/mesa/drivers/dri/intel/intel_span.c
index 83676b9313d1c6c3ded8b2516c6822e27b558dc6..e73e804c548bbc8a9da698c8b37acbbf82f18913 100644 (file)
--- a/src/mesa/drivers/dri/intel/intel_span.c
+++ b/src/mesa/drivers/dri/intel/intel_span.c
@@ -253,6 +253,30 @@ intel_framebuffer_unmap(struct intel_context *intel, struct gl_framebuffer *fb)
    }
 }
 
+/**
+ * Map the regions needed by intelSpanRenderStart().
+ */
+static void
+intel_span_map_buffers(struct intel_context *intel)
+{
+   struct gl_context *ctx = &intel->ctx;
+   struct intel_texture_object *tex_obj;
+
+   for (int i = 0; i < ctx->Const.MaxTextureImageUnits; i++) {
+      if (!ctx->Texture.Unit[i]._ReallyEnabled)
+        continue;
+      tex_obj = intel_texture_object(ctx->Texture.Unit[i]._Current);
+      intel_finalize_mipmap_tree(intel, i);
+      intel_tex_map_images(intel, tex_obj,
+                          GL_MAP_READ_BIT | GL_MAP_WRITE_BIT);
+   }
+
+   intel_framebuffer_map(intel, ctx->DrawBuffer);
+   if (ctx->ReadBuffer != ctx->DrawBuffer) {
+      intel_framebuffer_map(intel, ctx->ReadBuffer);
+   }
+}
+
 /**
  * Prepare for software rendering.  Map current read/draw framebuffers'
  * renderbuffes and all currently bound texture objects.
@@ -263,25 +287,10 @@ void
 intelSpanRenderStart(struct gl_context * ctx)
 {
    struct intel_context *intel = intel_context(ctx);
-   GLuint i;
 
    intel_flush(&intel->ctx);
    intel_prepare_render(intel);
-
-   for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) {
-      if (ctx->Texture.Unit[i]._ReallyEnabled) {
-         struct gl_texture_object *texObj = ctx->Texture.Unit[i]._Current;
-
-         intel_finalize_mipmap_tree(intel, i);
-         intel_tex_map_images(intel, intel_texture_object(texObj),
-                              GL_MAP_READ_BIT | GL_MAP_WRITE_BIT);
-      }
-   }
-
-   intel_framebuffer_map(intel, ctx->DrawBuffer);
-   if (ctx->ReadBuffer != ctx->DrawBuffer) {
-      intel_framebuffer_map(intel, ctx->ReadBuffer);
-   }
+   intel_span_map_buffers(intel);
 }
 
 /**