gpu: fix a nasty bug in the D3D9 vertex declaration code that caused

wrong offset computations.

src/gpu/vertexbuffer.cpp

@@ -303,7 +303,8 @@ void VertexDeclaration::Initialize()
         elements[n].Stream = m_streams[n].index;
         elements[n].Offset = 0;
         for (int i = 0; i < n; i++)
-            elements[n].Offset += m_streams[n].size;
+            if (m_streams[i].index == m_streams[n].index)
+                elements[n].Offset += m_streams[i].size;
 
         if (m_streams[n].stream_type >= 0
              && m_streams[n].stream_type < sizeof(tlut) / sizeof(*tlut))

src/gradient.cpp

@@ -154,9 +154,14 @@ void Gradient::TickDraw(float deltams)
 #if 1
             "    int x = (int)in_FragCoord.x;"
             "    int y = (int)in_FragCoord.y;"
+#if defined USE_D3D9 || defined _XBOX
+            "    float t = bayer[int(frac(x * 0.25) * 4.0)]"
+            "                   [int(frac(y * 0.25) * 4.0)];\n"
+#else
             // FIXME: we cannot address this matrix directly on the PS3
             "    float t = bayer[0][0];\n"
-            "    t = (t + 0.5) / 17.0 + z - x;\n"
+#endif
+            "    t = (t + 0.5) / 17.0;\n"
             "    col.x += frac(t - col.x) - t;\n"
             "    col.y += frac(t - col.y) - t;\n"
             "    col.z += frac(t - col.z) - t;\n"

src/scene.cpp

@@ -100,16 +100,12 @@ Scene::Scene(float angle)
 
 Scene::~Scene()
 {
-#if defined USE_D3D9 || defined _XBOX
-    /* FIXME: TODO */
-#else
     /* FIXME: this must be done while the GL context is still active.
      * Change the code architecture to make sure of that. */
     /* XXX: The test is necessary because of a crash with PSGL. */
     for (int i = 0; i < data->nbufs; i++)
         delete data->bufs[i];
     free(data->bufs);
-#endif
     delete data->m_vdecl;
     delete data;
 }
@@ -381,8 +377,6 @@ void Scene::Render() // XXX: rename to Blit()
         data->bufs[buf]->Unlock();
         data->bufs[buf + 1]->Unlock();
 
-        stdshader->Bind();
-
         /* Bind texture */
         data->tiles[i].tileset->Bind();
 
@@ -392,9 +386,7 @@ void Scene::Render() // XXX: rename to Blit()
         data->m_vdecl->SetStream(data->bufs[buf + 1], attr_tex);
 
         /* Draw arrays */
-#if 0
         data->m_vdecl->DrawElements(MeshPrimitive::Triangles, 0, (n - i) * 2);
-#endif
         data->m_vdecl->Unbind();
         data->tiles[i].tileset->Unbind();
     }