vbo: move VBO-private types, prototypes, etc. into new vbo_private.h header

Things which should not be used outside the VBO module.
More public/private clean-ups coming.

Reviewed-by: Roland Scheidegger <[email protected]>

1 files changed, 197 insertions, 0 deletions

diff --git a/src/mesa/vbo/vbo_private.h b/src/mesa/vbo/vbo_private.h
new file mode 100644
index 00000000000..e4c0cbc31a9
--- /dev/null
+++ b/src/mesa/vbo/vbo_private.h
@@ -0,0 +1,197 @@
+/*
+ * mesa 3-D graphics library
+ *
+ * Copyright (C) 1999-2006  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
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ */
+
+
+/**
+ * Types, functions, etc which are private to the VBO module.
+ */
+
+
+#ifndef VBO_PRIVATE_H
+#define VBO_PRIVATE_H
+
+
+#include "vbo/vbo_context.h"
+#include "main/mtypes.h"
+
+
+struct _glapi_table;
+struct _mesa_prim;
+
+
+
+static inline struct vbo_context *
+vbo_context(struct gl_context *ctx)
+{
+   return ctx->vbo_context;
+}
+
+
+/**
+ * Return VP_x token to indicate whether we're running fixed-function
+ * vertex transformation, an NV vertex program or ARB vertex program/shader.
+ */
+static inline enum vp_mode
+get_program_mode( struct gl_context *ctx )
+{
+   if (!ctx->VertexProgram._Current)
+      return VP_NONE;
+   else if (ctx->VertexProgram._Current == ctx->VertexProgram._TnlProgram)
+      return VP_NONE;
+   else
+      return VP_ARB;
+}
+
+
+/**
+ * This is called by glBegin, glDrawArrays and glDrawElements (and
+ * variations of those calls).  When we transition from immediate mode
+ * drawing to array drawing we need to invalidate the array state.
+ *
+ * glBegin/End builds vertex arrays.  Those arrays may look identical
+ * to glDrawArrays arrays except that the position of the elements may
+ * be different.  For example, arrays of (position3v, normal3f) vs. arrays
+ * of (normal3f, position3f).  So we need to make sure we notify drivers
+ * that arrays may be changing.
+ */
+static inline void
+vbo_draw_method(struct vbo_context *vbo, gl_draw_method method)
+{
+   struct gl_context *ctx = vbo->exec.ctx;
+
+   if (ctx->Array.DrawMethod != method) {
+      switch (method) {
+      case DRAW_ARRAYS:
+         ctx->Array._DrawArrays = vbo->exec.array.inputs;
+         break;
+      case DRAW_BEGIN_END:
+         ctx->Array._DrawArrays = vbo->exec.vtx.inputs;
+         break;
+      case DRAW_DISPLAY_LIST:
+         ctx->Array._DrawArrays = vbo->save.inputs;
+         break;
+      default:
+         unreachable("Bad VBO drawing method");
+      }
+
+      ctx->NewDriverState |= ctx->DriverFlags.NewArray;
+      ctx->Array.DrawMethod = method;
+   }
+}
+
+
+/**
+ * Return if format is integer. The immediate mode commands only emit floats
+ * for non-integer types, thus everything else is integer.
+ */
+static inline GLboolean
+vbo_attrtype_to_integer_flag(GLenum format)
+{
+   switch (format) {
+   case GL_FLOAT:
+   case GL_DOUBLE:
+      return GL_FALSE;
+   case GL_INT:
+   case GL_UNSIGNED_INT:
+   case GL_UNSIGNED_INT64_ARB:
+      return GL_TRUE;
+   default:
+      unreachable("Bad vertex attribute type");
+      return GL_FALSE;
+   }
+}
+
+static inline GLboolean
+vbo_attrtype_to_double_flag(GLenum format)
+{
+   switch (format) {
+   case GL_FLOAT:
+   case GL_INT:
+   case GL_UNSIGNED_INT:
+   case GL_UNSIGNED_INT64_ARB:
+      return GL_FALSE;
+   case GL_DOUBLE:
+      return GL_TRUE;
+   default:
+      unreachable("Bad vertex attribute type");
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * Return default component values for the given format.
+ * The return type is an array of fi_types, because that's how we declare
+ * the vertex storage : floats , integers or unsigned integers.
+ */
+static inline const fi_type *
+vbo_get_default_vals_as_union(GLenum format)
+{
+   static const GLfloat default_float[4] = { 0, 0, 0, 1 };
+   static const GLint default_int[4] = { 0, 0, 0, 1 };
+
+   switch (format) {
+   case GL_FLOAT:
+      return (fi_type *)default_float;
+   case GL_INT:
+   case GL_UNSIGNED_INT:
+      return (fi_type *)default_int;
+   default:
+      unreachable("Bad vertex format");
+      return NULL;
+   }
+}
+
+
+/**
+ * Compute the max number of vertices which can be stored in
+ * a vertex buffer, given the current vertex size, and the amount
+ * of space already used.
+ */
+static inline unsigned
+vbo_compute_max_verts(const struct vbo_exec_context *exec)
+{
+   unsigned n = (VBO_VERT_BUFFER_SIZE - exec->vtx.buffer_used) /
+      (exec->vtx.vertex_size * sizeof(GLfloat));
+   if (n == 0)
+      return 0;
+   /* Subtract one so we're always sure to have room for an extra
+    * vertex for GL_LINE_LOOP -> GL_LINE_STRIP conversion.
+    */
+   n--;
+   return n;
+}
+
+
+void
+vbo_try_prim_conversion(struct _mesa_prim *p);
+
+bool
+vbo_can_merge_prims(const struct _mesa_prim *p0, const struct _mesa_prim *p1);
+
+void
+vbo_merge_prims(struct _mesa_prim *p0, const struct _mesa_prim *p1);
+
+
+#endif /* VBO_PRIVATE_H */