Merge of first part of changes from the apricot branch, especially

the features that are needed to run the game. Compile tested with
scons, make, but not cmake, that seems to have an issue not related
to these changes. The changes include:

* GLSL support in the viewport and game engine, enable in the game
  menu in textured draw mode.
* Synced and merged part of the duplicated blender and gameengine/
  gameplayer drawing code.
* Further refactoring of game engine drawing code, especially mesh
  storage changed a lot.
* Optimizations in game engine armatures to avoid recomputations.
* A python function to get the framerate estimate in game.

* An option take object color into account in materials.
* An option to restrict shadow casters to a lamp's layers.
* Increase from 10 to 18 texture slots for materials, lamps, word.
  An extra texture slot shows up once the last slot is used.

* Memory limit for undo, not enabled by default yet because it
  needs the .B.blend to be changed.
* Multiple undo for image painting.

* An offset for dupligroups, so not all objects in a group have to
  be at the origin.

1 files changed, 169 insertions, 0 deletions

diff --git a/source/blender/gpu/GPU_material.h b/source/blender/gpu/GPU_material.h
new file mode 100644
index 00000000000..560421f7edf
--- /dev/null
+++ b/source/blender/gpu/GPU_material.h
@@ -0,0 +1,169 @@
+/**
+ * $Id$
+ *
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * This shader is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version. The Blender
+ * Foundation also sells licenses for use in proprietary software under
+ * the Blender License.  See http://www.blender.org/BL/ for information
+ * about this.
+ *
+ * This shader is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this shader; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * The Original Code is Copyright (C) 2005 Blender Foundation.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): Brecht Van Lommel.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#ifndef __GPU_MATERIAL__
+#define __GPU_MATERIAL__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct Image;
+struct ImageUser;
+struct Material;
+struct Object;
+struct Lamp;
+struct bNode;
+struct LinkNode;
+struct Scene;
+struct GPUVertexAttribs;
+struct GPUNode;
+struct GPUNodeLink;
+struct GPUNodeStack;
+struct GPUMaterial;
+struct GPUTexture;
+struct GPULamp;
+
+typedef struct GPUNode GPUNode;
+typedef struct GPUNodeLink GPUNodeLink;
+typedef struct GPUMaterial GPUMaterial;
+typedef struct GPULamp GPULamp;
+
+/* Functions to create GPU Materials nodes */
+
+typedef enum GPUType {
+	GPU_NONE = 0,
+	GPU_FLOAT = 1,
+	GPU_VEC2 = 2,
+	GPU_VEC3 = 3,
+	GPU_VEC4 = 4,
+	GPU_MAT3 = 9,
+	GPU_MAT4 = 16,
+	GPU_TEX1D = 1001,
+	GPU_TEX2D = 1002,
+	GPU_SHADOW2D = 1003,
+	GPU_ATTRIB = 3001
+} GPUType;
+
+typedef enum GPUBuiltin {
+	GPU_VIEW_MATRIX = 1,
+	GPU_OBJECT_MATRIX = 2,
+	GPU_INVERSE_VIEW_MATRIX = 4,
+	GPU_INVERSE_OBJECT_MATRIX = 8,
+	GPU_VIEW_POSITION = 16,
+	GPU_VIEW_NORMAL = 32,
+	GPU_OBCOLOR = 64
+} GPUBuiltin;
+
+typedef enum GPUBlendMode {
+	GPU_BLEND_SOLID = 0,
+	GPU_BLEND_ADD = 1,
+	GPU_BLEND_ALPHA = 2,
+	GPU_BLEND_CLIP = 4
+} GPUBlendMode;
+
+typedef struct GPUNodeStack {
+	GPUType type;
+	char *name;
+	float vec[4];
+	struct GPUNodeLink *link;
+	short hasinput;
+	short hasoutput;
+	short sockettype;
+} GPUNodeStack;
+
+GPUNodeLink *GPU_attribute(int type, char *name);
+GPUNodeLink *GPU_uniform(float *num);
+GPUNodeLink *GPU_dynamic_uniform(float *num);
+GPUNodeLink *GPU_image(struct Image *ima, struct ImageUser *iuser);
+GPUNodeLink *GPU_texture(int size, float *pixels);
+GPUNodeLink *GPU_dynamic_texture(struct GPUTexture *tex);
+GPUNodeLink *GPU_socket(GPUNodeStack *sock);
+GPUNodeLink *GPU_builtin(GPUBuiltin builtin);
+
+int GPU_link(GPUMaterial *mat, char *name, ...);
+int GPU_stack_link(GPUMaterial *mat, char *name, GPUNodeStack *in, GPUNodeStack *out, ...);
+
+void GPU_material_output_link(GPUMaterial *material, GPUNodeLink *link);
+void GPU_material_enable_alpha(GPUMaterial *material);
+GPUBlendMode GPU_material_blend_mode(GPUMaterial *material, float obcol[4]);
+
+/* High level functions to create and use GPU materials */
+
+GPUMaterial *GPU_material_from_blender(struct Scene *scene, struct Material *ma);
+void GPU_material_free(struct Material *ma);
+
+void GPU_materials_free();
+
+void GPU_material_bind(GPUMaterial *material, int lay, double time);
+void GPU_material_bind_uniforms(GPUMaterial *material, float obmat[][4], float viewmat[][4], float viewinv[][4], float obcol[4]);
+void GPU_material_unbind(GPUMaterial *material);
+int GPU_material_bound(GPUMaterial *material);
+
+void GPU_material_vertex_attributes(GPUMaterial *material,
+	struct GPUVertexAttribs *attrib);
+
+/* Exported shading */
+
+typedef struct GPUShadeInput {
+	GPUMaterial *gpumat;
+	struct Material *mat;
+
+	GPUNodeLink *rgb, *specrgb, *vn, *view, *vcol, *ref;
+	GPUNodeLink *alpha, *refl, *spec, *emit, *har, *amb;
+} GPUShadeInput;
+
+typedef struct GPUShadeResult {
+	GPUNodeLink *diff, *spec, *combined, *alpha;
+} GPUShadeResult;
+
+void GPU_shadeinput_set(GPUMaterial *mat, struct Material *ma, GPUShadeInput *shi);
+void GPU_shaderesult_set(GPUShadeInput *shi, GPUShadeResult *shr);
+
+/* Lamps */
+
+GPULamp *GPU_lamp_from_blender(struct Scene *scene, struct Object *ob, struct Object *par);
+void GPU_lamp_free(struct Object *ob);
+
+int GPU_lamp_has_shadow_buffer(GPULamp *lamp);
+void GPU_lamp_shadow_buffer_bind(GPULamp *lamp, float viewmat[][4], int *winsize, float winmat[][4]);
+void GPU_lamp_shadow_buffer_unbind(GPULamp *lamp);
+
+void GPU_lamp_update(GPULamp *lamp, float obmat[][4]);
+int GPU_lamp_shadow_layer(GPULamp *lamp);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*__GPU_MATERIAL__*/
+