util: Rename PURE to ATTRIBUTE_PURE.

[mesa.git] / src / mesa / main / framebuffer.c

diff --git a/src/mesa/main/framebuffer.c b/src/mesa/main/framebuffer.c
index 36a953988ebe593b9c7f8d1ccce3adf79d5c900c..37e2c29c89ccdc729cf45d74c17806b24792c94b 100644 (file)
--- a/src/mesa/main/framebuffer.c
+++ b/src/mesa/main/framebuffer.c
@@ -157,6 +157,7 @@ _mesa_initialize_window_framebuffer(struct gl_framebuffer *fb,
    fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
    fb->_AllColorBuffersFixedPoint = !visual->floatMode;
    fb->_HasSNormOrFloatColorBuffer = visual->floatMode;
+   fb->_HasAttachments = true;
 
    compute_depth_max(fb);
 }
@@ -312,7 +313,7 @@ _mesa_resize_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb,
 
    if (ctx) {
       /* update scissor / window bounds */
-      _mesa_update_draw_buffer_bounds(ctx);
+      _mesa_update_draw_buffer_bounds(ctx, ctx->DrawBuffer);
       /* Signal new buffer state so that swrast will update its clipping
        * info (the CLIP_BIT flag).
        */
@@ -356,30 +357,20 @@ update_framebuffer_size(struct gl_context *ctx, struct gl_framebuffer *fb)
 }
 
 
+
 /**
- * Calculate the inclusive bounding box for the scissor of a specific viewport
+ * Given a bounding box, intersect the bounding box with the scissor of
+ * a specified vieport.
  *
  * \param ctx     GL context.
- * \param buffer  Framebuffer to be checked against
  * \param idx     Index of the desired viewport
  * \param bbox    Bounding box for the scissored viewport.  Stored as xmin,
  *                xmax, ymin, ymax.
- *
- * \warning This function assumes that the framebuffer dimensions are up to
- * date (e.g., update_framebuffer_size has been recently called on \c buffer).
- *
- * \sa _mesa_clip_to_region
  */
 void
-_mesa_scissor_bounding_box(const struct gl_context *ctx,
-                           const struct gl_framebuffer *buffer,
-                           unsigned idx, int *bbox)
+_mesa_intersect_scissor_bounding_box(const struct gl_context *ctx,
+                                     unsigned idx, int *bbox)
 {
-   bbox[0] = 0;
-   bbox[2] = 0;
-   bbox[1] = buffer->Width;
-   bbox[3] = buffer->Height;
-
    if (ctx->Scissor.EnableFlags & (1u << idx)) {
       if (ctx->Scissor.ScissorArray[idx].X > bbox[0]) {
          bbox[0] = ctx->Scissor.ScissorArray[idx].X;
@@ -401,6 +392,33 @@ _mesa_scissor_bounding_box(const struct gl_context *ctx,
          bbox[2] = bbox[3];
       }
    }
+}
+
+/**
+ * Calculate the inclusive bounding box for the scissor of a specific viewport
+ *
+ * \param ctx     GL context.
+ * \param buffer  Framebuffer to be checked against
+ * \param idx     Index of the desired viewport
+ * \param bbox    Bounding box for the scissored viewport.  Stored as xmin,
+ *                xmax, ymin, ymax.
+ *
+ * \warning This function assumes that the framebuffer dimensions are up to
+ * date (e.g., update_framebuffer_size has been recently called on \c buffer).
+ *
+ * \sa _mesa_clip_to_region
+ */
+void
+_mesa_scissor_bounding_box(const struct gl_context *ctx,
+                           const struct gl_framebuffer *buffer,
+                           unsigned idx, int *bbox)
+{
+   bbox[0] = 0;
+   bbox[2] = 0;
+   bbox[1] = buffer->Width;
+   bbox[3] = buffer->Height;
+
+   _mesa_intersect_scissor_bounding_box(ctx, idx, bbox);
 
    assert(bbox[0] <= bbox[1]);
    assert(bbox[2] <= bbox[3]);
@@ -413,9 +431,9 @@ _mesa_scissor_bounding_box(const struct gl_context *ctx,
  * \param ctx  the GL context.
  */
 void
-_mesa_update_draw_buffer_bounds(struct gl_context *ctx)
+_mesa_update_draw_buffer_bounds(struct gl_context *ctx,
+                                struct gl_framebuffer *buffer)
 {
-   struct gl_framebuffer *buffer = ctx->DrawBuffer;
    int bbox[4];
 
    if (!buffer)
@@ -652,7 +670,7 @@ update_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
        * context state (GL_READ_BUFFER too).
        */
       if (fb->ColorDrawBuffer[0] != ctx->Color.DrawBuffer[0]) {
-         _mesa_drawbuffers(ctx, ctx->Const.MaxDrawBuffers,
+         _mesa_drawbuffers(ctx, fb, ctx->Const.MaxDrawBuffers,
                            ctx->Color.DrawBuffer, NULL);
       }
    }
@@ -692,7 +710,7 @@ _mesa_update_framebuffer(struct gl_context *ctx,
       update_framebuffer(ctx, readFb);
 
    _mesa_update_clamp_vertex_color(ctx, drawFb);
-   _mesa_update_clamp_fragment_color(ctx);
+   _mesa_update_clamp_fragment_color(ctx, drawFb);
 }
 
 
@@ -920,7 +938,7 @@ _mesa_print_framebuffer(const struct gl_framebuffer *fb)
 
    fprintf(stderr, "Mesa Framebuffer %u at %p\n", fb->Name, (void *) fb);
    fprintf(stderr, "  Size: %u x %u  Status: %s\n", fb->Width, fb->Height,
-           _mesa_lookup_enum_by_nr(fb->_Status));
+           _mesa_enum_to_string(fb->_Status));
    fprintf(stderr, "  Attachments:\n");
 
    for (i = 0; i < BUFFER_COUNT; i++) {