Checkpoint of new vbo-building code. Currently builds regular arrays

rather than VBO's - VBOs are easy but need to look closer at the
driver interface.  The trivial/tri demo works.

1 files changed, 227 insertions, 0 deletions

diff --git a/src/mesa/vbo/vbo_exec.c b/src/mesa/vbo/vbo_exec.c
new file mode 100644
index 0000000000..4499803b8c
--- /dev/null
+++ b/src/mesa/vbo/vbo_exec.c
@@ -0,0 +1,227 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.3
+ *
+ * Copyright (C) 1999-2005  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+
+#include "api_arrayelt.h"
+#include "glheader.h"
+#include "imports.h"
+#include "context.h"
+#include "macros.h"
+#include "mtypes.h"
+#include "dlist.h"
+#include "vtxfmt.h"
+
+#include "vbo_context.h"
+
+
+#define NR_LEGACY_ATTRIBS 16
+#define NR_GENERIC_ATTRIBS 16
+#define NR_MAT_ATTRIBS 12
+
+static void init_legacy_currval(GLcontext *ctx)
+{
+   struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
+   struct gl_client_array *arrays = exec->legacy_currval;
+   GLuint i;
+
+   memset(arrays, 0, sizeof(*arrays) * NR_LEGACY_ATTRIBS);
+
+   /* Set up a constant (StrideB == 0) array for each current
+    * attribute:
+    */
+   for (i = 0; i < NR_LEGACY_ATTRIBS; i++) {
+      struct gl_client_array *cl = &arrays[i];
+
+      switch (i) {
+      case VBO_ATTRIB_EDGEFLAG:
+	 cl->Type = GL_UNSIGNED_BYTE;
+	 cl->Ptr = (const void *)&ctx->Current.EdgeFlag;
+	 break;
+      case VBO_ATTRIB_INDEX:
+	 cl->Type = GL_FLOAT;
+	 cl->Ptr = (const void *)&ctx->Current.Index;
+	 break;
+      default:
+	 cl->Type = GL_FLOAT;
+	 cl->Ptr = (const void *)ctx->Current.Attrib[i];
+	 break;
+      }
+
+      /* This will have to be determined at runtime:
+       */
+      cl->Size = 1;
+      cl->Stride = 0;
+      cl->StrideB = 0;
+      cl->Enabled = 1;
+      cl->BufferObj = ctx->Array.NullBufferObj;
+   }
+}
+
+
+static void init_generic_currval(GLcontext *ctx)
+{
+   struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
+   struct gl_client_array *arrays = exec->generic_currval;
+   GLuint i;
+
+   memset(arrays, 0, sizeof(*arrays) * NR_GENERIC_ATTRIBS);
+
+   for (i = 0; i < NR_GENERIC_ATTRIBS; i++) {
+      struct gl_client_array *cl = &arrays[i];
+
+      /* This will have to be determined at runtime:
+       */
+      cl->Size = 1;
+
+      cl->Type = GL_FLOAT;
+      cl->Ptr = (const void *)ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + i];
+      cl->Stride = 0;
+      cl->StrideB = 0;
+      cl->Enabled = 1;
+      cl->BufferObj = ctx->Array.NullBufferObj;
+   }
+}
+
+
+static void init_mat_currval(GLcontext *ctx)
+{
+   struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
+   struct gl_client_array *arrays = exec->mat_currval;
+   GLuint i;
+
+   memset(arrays, 0, sizeof(*arrays) * NR_GENERIC_ATTRIBS);
+
+   /* Set up a constant (StrideB == 0) array for each current
+    * attribute:
+    */
+   for (i = 0; i < NR_GENERIC_ATTRIBS; i++) {
+      struct gl_client_array *cl = &arrays[i];
+
+      /* Size is fixed for the material attributes, for others will
+       * be determined at runtime:
+       */
+      switch (i - VERT_ATTRIB_GENERIC0) {
+      case MAT_ATTRIB_FRONT_SHININESS:
+      case MAT_ATTRIB_BACK_SHININESS:
+	 cl->Size = 1;
+	 break;
+      case MAT_ATTRIB_FRONT_INDEXES:
+      case MAT_ATTRIB_BACK_INDEXES:
+	 cl->Size = 3;
+	 break;
+      default:
+	 cl->Size = 4;
+	 break;
+      }
+
+      if (i < MAT_ATTRIB_MAX)
+	 cl->Ptr = (const void *)ctx->Light.Material.Attrib[i];
+      else 
+	 cl->Ptr = (const void *)ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + i];
+
+      cl->Type = GL_FLOAT;
+      cl->Stride = 0;
+      cl->StrideB = 0;
+      cl->Enabled = 1;
+      cl->BufferObj = ctx->Array.NullBufferObj;
+   }
+}
+
+
+void vbo_exec_init( GLcontext *ctx )
+{
+   struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
+
+   exec->ctx = ctx;
+
+   /* Initialize the arrayelt helper
+    */
+   if (!ctx->aelt_context &&
+       !_ae_create_context( ctx )) 
+      return;
+
+   vbo_exec_vtx_init( exec );
+   vbo_exec_array_init( exec );
+
+   init_legacy_currval( ctx );
+   init_generic_currval( ctx );
+   init_mat_currval( ctx );
+
+   ctx->Driver.NeedFlush = 0;
+   ctx->Driver.CurrentExecPrimitive = PRIM_OUTSIDE_BEGIN_END;
+   ctx->Driver.FlushVertices = vbo_exec_FlushVertices;
+
+   exec->eval.recalculate_maps = 1;
+}
+
+
+void vbo_exec_destroy( GLcontext *ctx )
+{
+   struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
+
+   if (ctx->aelt_context) {
+      _ae_destroy_context( ctx );
+      ctx->aelt_context = NULL;
+   }
+
+   vbo_exec_vtx_destroy( exec );
+   vbo_exec_array_destroy( exec );
+}
+
+/* Really want to install these callbacks to a central facility to be
+ * invoked according to the state flags.  That will have to wait for a
+ * mesa rework:
+ */ 
+void vbo_exec_invalidate_state( GLcontext *ctx, GLuint new_state )
+{
+   struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
+
+   if (new_state & (_NEW_PROGRAM|_NEW_EVAL))
+      exec->eval.recalculate_maps = 1;
+
+   _ae_invalidate_state(ctx, new_state);
+}
+
+
+void vbo_exec_wakeup( GLcontext *ctx )
+{
+   struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
+
+   ctx->Driver.FlushVertices = vbo_exec_FlushVertices;
+   ctx->Driver.NeedFlush |= FLUSH_UPDATE_CURRENT;
+
+   /* Hook our functions into exec and compile dispatch tables.
+    */
+   _mesa_install_exec_vtxfmt( ctx, &exec->vtxfmt );
+
+   /* Assume we haven't been getting state updates either:
+    */
+   vbo_exec_invalidate_state( ctx, ~0 );
+}
+
+
+