st/mesa: rename var and update st_choose_format() comments

[mesa.git] / src / mesa / state_tracker / st_atom_viewport.c

diff --git a/src/mesa/state_tracker/st_atom_viewport.c b/src/mesa/state_tracker/st_atom_viewport.c
index 1307cbb6d2a430994f342d1a418cf815f7ecb2b5..0b6c34ca2cbec9ac7d919e2faf7a683677e3d779 100644 (file)
--- a/src/mesa/state_tracker/st_atom_viewport.c
+++ b/src/mesa/state_tracker/st_atom_viewport.c
@@ -26,12 +26,11 @@
  **************************************************************************/
 
 
-#include "context.h"
-#include "colormac.h"
+#include "main/context.h"
 #include "st_context.h"
-#include "pipe/p_context.h"
 #include "st_atom.h"
-
+#include "pipe/p_context.h"
+#include "cso_cache/cso_context.h"
 
 /**
  * Update the viewport transformation matrix.  Depends on:
@@ -39,27 +38,19 @@
  *  - depthrange
  *  - window pos/size or FBO size
  */
-static void update_viewport( struct st_context *st )
+static void
+update_viewport( struct st_context *st )
 {
    GLcontext *ctx = st->ctx;
    GLfloat yScale, yBias;
 
-   /* Negate Y scale to flip image vertically.
-    * The NDC Y coords prior to viewport transformation are in the range
-    * [y=-1=bottom, y=1=top]
-    * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where H
-    * is the window height.
-    * Use the viewport transformation to invert Y.
-    */
-
    /* _NEW_BUFFERS
     */
-   if (ctx->DrawBuffer) {
+   if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
       yScale = -1;
-      yBias = ctx->DrawBuffer->Height ;
+      yBias = (GLfloat)ctx->DrawBuffer->Height;
    }
    else {
-      /* we won't be rendering anything */
       yScale = 1.0;
       yBias = 0.0;
    }
@@ -67,36 +58,33 @@ static void update_viewport( struct st_context *st )
    /* _NEW_VIEWPORT 
     */
    {
-      GLfloat x = ctx->Viewport.X;
-      GLfloat y = ctx->Viewport.Y;
+      GLfloat x = (GLfloat)ctx->Viewport.X;
+      GLfloat y = (GLfloat)ctx->Viewport.Y;
       GLfloat z = ctx->Viewport.Near;
-      GLfloat half_width = ctx->Viewport.Width / 2.0;
-      GLfloat half_height = ctx->Viewport.Height / 2.0;
-      GLfloat half_depth = (ctx->Viewport.Far - ctx->Viewport.Near) / 2.0;
-      struct pipe_viewport_state vp;
+      GLfloat half_width = (GLfloat)ctx->Viewport.Width * 0.5f;
+      GLfloat half_height = (GLfloat)ctx->Viewport.Height * 0.5f;
+      GLfloat half_depth = (GLfloat)(ctx->Viewport.Far - ctx->Viewport.Near) * 0.5f;
       
-      vp.scale[0] = half_width;
-      vp.scale[1] = half_height * yScale;
-      vp.scale[2] = half_depth;
-      vp.scale[3] = 1.0;
+      st->state.viewport.scale[0] = half_width;
+      st->state.viewport.scale[1] = half_height * yScale;
+      st->state.viewport.scale[2] = half_depth;
+      st->state.viewport.scale[3] = 1.0;
 
-      vp.translate[0] = half_width + x;
-      vp.translate[1] = (half_height + y) * yScale + yBias;
-      vp.translate[2] = half_depth + z;
-      vp.translate[3] = 0.0;
+      st->state.viewport.translate[0] = half_width + x;
+      st->state.viewport.translate[1] = (half_height + y) * yScale + yBias;
+      st->state.viewport.translate[2] = half_depth + z;
+      st->state.viewport.translate[3] = 0.0;
 
-      if (memcmp(&vp, &st->state.viewport, sizeof(vp)) != 0) {
-        st->state.viewport = vp;
-        st->pipe->set_viewport_state(st->pipe, &vp);
-      }
+      cso_set_viewport(st->cso_context, &st->state.viewport);
    }
 }
 
 
 const struct st_tracked_state st_update_viewport = {
-   .dirty = {
-      .mesa = _NEW_BUFFERS | _NEW_VIEWPORT,
-      .st = 0,
+   "st_update_viewport",                               /* name */
+   {                                                   /* dirty */
+      _NEW_BUFFERS | _NEW_VIEWPORT,                    /* mesa */
+      0,                                               /* st */
    },
-   .update = update_viewport
+   update_viewport                                     /* update */
 };