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source: downloads/ogre_src_v1-9-0/OgreMain/include/OgreShadowVolumeExtrudeProgram.h @ 153

Last change on this file since 153 was 148, checked in by patricwi, 6 years ago

Added new dependencies for ogre1.9 and cegui0.8
File size: 15.4 KB
Line 
1/*
2-----------------------------------------------------------------------------
3This source file is part of OGRE
4(Object-oriented Graphics Rendering Engine)
5For the latest info, see http://www.ogre3d.org/
6
7Copyright (c) 2000-2013 Torus Knot Software Ltd
8
9Permission is hereby granted, free of charge, to any person obtaining a copy
10of this software and associated documentation files (the "Software"), to deal
11in the Software without restriction, including without limitation the rights
12to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13copies of the Software, and to permit persons to whom the Software is
14furnished to do so, subject to the following conditions:
15
16The above copyright notice and this permission notice shall be included in
17all copies or substantial portions of the Software.
18
19THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25THE SOFTWARE.
26-----------------------------------------------------------------------------
27*/
28
29#ifndef __SHADOWVOLUMEEXTRUDEPROGRAM_H__
30#define __SHADOWVOLUMEEXTRUDEPROGRAM_H__
31
32#include "OgrePrerequisites.h"
33#include "OgreLight.h"
34#include "OgreHeaderPrefix.h"
35
36namespace Ogre {
37        /** \addtogroup Core
38        *  @{
39        */
40        /** \addtogroup Scene
41        *  @{
42        */
43        /** Static class containing source for vertex programs for extruding shadow volumes
44    @remarks
45        This exists so we don't have to be dependent on an external media files.
46        Assembler is used so we don't have to rely on particular plugins.
47        The assembler contents of this file were generated from the following Cg:
48    @code
49        // Point light shadow volume extrude
50        void shadowVolumeExtrudePointLight_vp (
51            float4 position                     : POSITION,
52            float  wcoord                       : TEXCOORD0,
53
54            out float4 oPosition        : POSITION,
55
56            uniform float4x4 worldViewProjMatrix,
57            uniform float4   lightPos // homogeneous, object space
58            )
59        {
60            // extrusion in object space
61            // vertex unmodified if w==1, extruded if w==0
62            float4 newpos =
63                (wcoord.xxxx * lightPos) +
64                float4(position.xyz - lightPos.xyz, 0);
65
66            oPosition = mul(worldViewProjMatrix, newpos);
67
68        }
69
70        // Directional light extrude
71        void shadowVolumeExtrudeDirLight_vp (
72            float4 position                     : POSITION,
73            float  wcoord                       : TEXCOORD0,
74
75            out float4 oPosition        : POSITION,
76
77            uniform float4x4 worldViewProjMatrix,
78            uniform float4   lightPos // homogenous, object space
79            )
80        {
81            // extrusion in object space
82            // vertex unmodified if w==1, extruded if w==0
83            float4 newpos =
84                (wcoord.xxxx * (position + lightPos)) - lightPos;
85
86            oPosition = mul(worldViewProjMatrix, newpos);
87
88        }
89        // Point light shadow volume extrude - FINITE
90        void shadowVolumeExtrudePointLightFinite_vp (
91            float4 position                     : POSITION,
92            float  wcoord                       : TEXCOORD0,
93
94            out float4 oPosition        : POSITION,
95
96            uniform float4x4 worldViewProjMatrix,
97            uniform float4   lightPos, // homogeneous, object space
98                        uniform float    extrusionDistance // how far to extrude
99            )
100        {
101            // extrusion in object space
102            // vertex unmodified if w==1, extruded if w==0
103                        float3 extrusionDir = position.xyz - lightPos.xyz;
104                        extrusionDir = normalize(extrusionDir);
105                       
106            float4 newpos = float4(position.xyz + 
107                ((1 - wcoord.x) * extrusionDistance * extrusionDir), 1);
108
109            oPosition = mul(worldViewProjMatrix, newpos);
110
111        }
112
113        // Directional light extrude - FINITE
114        void shadowVolumeExtrudeDirLightFinite_vp (
115            float4 position                     : POSITION,
116            float  wcoord                       : TEXCOORD0,
117
118            out float4 oPosition        : POSITION,
119
120            uniform float4x4 worldViewProjMatrix,
121            uniform float4   lightPos, // homogeneous, object space
122                        uniform float    extrusionDistance // how far to extrude
123            )
124        {
125            // extrusion in object space
126            // vertex unmodified if w==1, extruded if w==0
127                        // -ve lightPos is direction
128            float4 newpos = float4(position.xyz -
129                (wcoord.x * extrusionDistance * lightPos.xyz), 1);
130
131            oPosition = mul(worldViewProjMatrix, newpos);
132
133        }               
134    @endcode
135    */
136        class _OgreExport ShadowVolumeExtrudeProgram : public ShadowDataAlloc
137    {
138    private:
139        static String mPointArbvp1;
140        static String mPointVs_1_1;
141                static String mPointVs_4_0;
142                static String mPointVs_glsl;
143                static String mPointVs_glsles;
144        static String mDirArbvp1;
145        static String mDirVs_1_1;
146                static String mDirVs_4_0;
147                static String mDirVs_glsl;
148                static String mDirVs_glsles;
149        // same as above, except the color is set to 1 to enable debug volumes to be seen
150        static String mPointArbvp1Debug;
151        static String mPointVs_1_1Debug;
152                static String mPointVs_4_0Debug;
153                static String mPointVs_glslDebug;
154                static String mPointVs_glslesDebug;
155        static String mDirArbvp1Debug;
156        static String mDirVs_1_1Debug;
157                static String mDirVs_4_0Debug;
158                static String mDirVs_glslDebug;
159                static String mDirVs_glslesDebug;
160               
161        static String mPointArbvp1Finite;
162        static String mPointVs_1_1Finite;
163                static String mPointVs_4_0Finite;
164                static String mPointVs_glslFinite;
165                static String mPointVs_glslesFinite;
166        static String mDirArbvp1Finite;
167        static String mDirVs_1_1Finite;
168                static String mDirVs_4_0Finite;
169                static String mDirVs_glslFinite;
170                static String mDirVs_glslesFinite;
171        // same as above, except the color is set to 1 to enable debug volumes to be seen
172        static String mPointArbvp1FiniteDebug;
173        static String mPointVs_1_1FiniteDebug;
174                static String mPointVs_4_0FiniteDebug;
175                static String mPointVs_glslFiniteDebug;
176                static String mPointVs_glslesFiniteDebug;
177        static String mDirArbvp1FiniteDebug;
178        static String mDirVs_1_1FiniteDebug;
179                static String mDirVs_4_0FiniteDebug;
180                static String mDirVs_glslFiniteDebug;
181                static String mDirVs_glslesFiniteDebug;
182
183                static String mGeneralFs_4_0;
184                static String mGeneralFs_glsl;
185                static String mGeneralFs_glsles;
186
187                static bool mInitialised;
188
189        public:
190#define OGRE_NUM_SHADOW_EXTRUDER_PROGRAMS 8
191        enum Programs
192        {
193            // Point light extruder, infinite distance
194            POINT_LIGHT = 0,
195            // Point light extruder, infinite distance, debug mode
196            POINT_LIGHT_DEBUG = 1,
197            // Directional light extruder, infinite distance
198            DIRECTIONAL_LIGHT = 2,
199            // Directional light extruder, infinite distance, debug mode
200            DIRECTIONAL_LIGHT_DEBUG = 3,
201            // Point light extruder, finite distance
202            POINT_LIGHT_FINITE = 4,
203            // Point light extruder, finite distance, debug mode
204            POINT_LIGHT_FINITE_DEBUG = 5,
205            // Directional light extruder, finite distance
206            DIRECTIONAL_LIGHT_FINITE = 6,
207            // Directional light extruder, finite distance, debug mode
208            DIRECTIONAL_LIGHT_FINITE_DEBUG = 7
209
210        };
211        static const String programNames[OGRE_NUM_SHADOW_EXTRUDER_PROGRAMS];
212                static String frgProgramName;
213
214        /// Initialise the creation of these vertex programs
215        static void initialise(void);
216        /// Shutdown & destroy the vertex programs
217        static void shutdown(void);
218        /// Get extruder program source for point lights, compatible with arbvp1
219        static const String& getPointLightExtruderArbvp1(void) { return mPointArbvp1; }
220        /// Get extruder program source for point lights, compatible with vs_1_1
221        static const String& getPointLightExtruderVs_1_1(void) { return mPointVs_1_1; }
222                /// Get extruder program source for point lights, compatible with vs_4_0
223                static const String& getPointLightExtruderVs_4_0(void) { return mPointVs_4_0; }
224                /// Get extruder program source for point lights, compatible with glsl
225                static const String& getPointLightExtruderVs_glsl(void) { return mPointVs_glsl; }
226                /// Get extruder program source for point lights, compatible with glsles
227                static const String& getPointLightExtruderVs_glsles(void) { return mPointVs_glsles; }
228        /// Get extruder program source for directional lights, compatible with arbvp1
229        static const String& getDirectionalLightExtruderArbvp1(void) { return mDirArbvp1; }
230        /// Get extruder program source for directional lights, compatible with vs_1_1
231        static const String& getDirectionalLightExtruderVs_1_1(void) { return mDirVs_1_1; }
232                /// Get extruder program source for directional lights, compatible with vs_4_0
233                static const String& getDirectionalLightExtruderVs_4_0(void) { return mDirVs_4_0; }
234                /// Get extruder program source for directional lights, compatible with glsl
235                static const String& getDirectionalLightExtruderVs_glsl(void) { return mDirVs_glsl; }
236                /// Get extruder program source for directional lights, compatible with glsles
237                static const String& getDirectionalLightExtruderVs_glsles(void) { return mDirVs_glsles; }
238
239        /// Get extruder program source for debug point lights, compatible with arbvp1
240        static const String& getPointLightExtruderArbvp1Debug(void) { return mPointArbvp1Debug; }
241        /// Get extruder program source for debug point lights, compatible with vs_1_1
242        static const String& getPointLightExtruderVs_1_1Debug(void) { return mPointVs_1_1Debug; }
243                /// Get extruder program source for debug point lights, compatible with vs_4_0
244                static const String& getPointLightExtruderVs_4_0Debug(void) { return mPointVs_4_0Debug; }
245                /// Get extruder program source for debug point lights, compatible with glsl
246                static const String& getPointLightExtruderVs_glslDebug(void) { return mPointVs_glslDebug; }
247                /// Get extruder program source for debug point lights, compatible with glsles
248                static const String& getPointLightExtruderVs_glslesDebug(void) { return mPointVs_glslesDebug; }
249        /// Get extruder program source for debug directional lights, compatible with arbvp1
250        static const String& getDirectionalLightExtruderArbvp1Debug(void) { return mDirArbvp1Debug; }
251        /// Get extruder program source for debug directional lights, compatible with vs_1_1
252        static const String& getDirectionalLightExtruderVs_1_1Debug(void) { return mDirVs_1_1Debug; }
253                /// Get extruder program source for debug directional lights, compatible with vs_4_0
254                static const String& getDirectionalLightExtruderVs_4_0Debug(void) { return mDirVs_4_0Debug; }
255                /// Get extruder program source for debug directional lights, compatible with glsl
256                static const String& getDirectionalLightExtruderVs_glslDebug(void) { return mDirVs_glslDebug; }
257                /// Get extruder program source for debug directional lights, compatible with glsles
258                static const String& getDirectionalLightExtruderVs_glslesDebug(void) { return mDirVs_glslesDebug; }
259        /// General purpose method to get any of the program sources
260        static const String& getProgramSource(Light::LightTypes lightType, const String syntax, 
261            bool finite, bool debug);
262
263        static const String& getProgramName(Light::LightTypes lightType, bool finite, bool debug);
264
265
266        /// Get FINITE extruder program source for point lights, compatible with arbvp1
267        static const String& getPointLightExtruderArbvp1Finite(void) { return mPointArbvp1Finite; }
268        /// Get FINITE extruder program source for point lights, compatible with vs_1_1
269        static const String& getPointLightExtruderVs_1_1Finite(void) { return mPointVs_1_1Finite; }
270                /// Get FINITE extruder program source for point lights, compatible with vs_4_0
271                static const String& getPointLightExtruderVs_4_0Finite(void) { return mPointVs_4_0Finite; }
272                /// Get FINITE extruder program source for point lights, compatible with glsl
273                static const String& getPointLightExtruderVs_glslFinite(void) { return mPointVs_glslFinite; }
274                /// Get FINITE extruder program source for point lights, compatible with glsles
275                static const String& getPointLightExtruderVs_glslesFinite(void) { return mPointVs_glslesFinite; }
276        /// Get FINITE extruder program source for directional lights, compatible with arbvp1
277        static const String& getDirectionalLightExtruderArbvp1Finite(void) { return mDirArbvp1Finite; }
278        /// Get FINITE extruder program source for directional lights, compatible with vs_1_1
279        static const String& getDirectionalLightExtruderVs_1_1Finite(void) { return mDirVs_1_1Finite; }
280                /// Get FINITE extruder program source for directional lights, compatible with vs_4_0
281                static const String& getDirectionalLightExtruderVs_4_0Finite(void) { return mDirVs_4_0Finite; }
282                /// Get FINITE extruder program source for directional lights, compatible with glsl
283                static const String& getDirectionalLightExtruderVs_glslFinite(void) { return mDirVs_glslFinite; }
284                /// Get FINITE extruder program source for directional lights, compatible with glsles
285                static const String& getDirectionalLightExtruderVs_glslesFinite(void) { return mDirVs_glslesFinite; }
286
287        /// Get FINITE extruder program source for debug point lights, compatible with arbvp1
288        static const String& getPointLightExtruderArbvp1FiniteDebug(void) { return mPointArbvp1FiniteDebug; }
289        /// Get extruder program source for debug point lights, compatible with vs_1_1
290        static const String& getPointLightExtruderVs_1_1FiniteDebug(void) { return mPointVs_1_1FiniteDebug; }
291                /// Get extruder program source for debug point lights, compatible with vs_4_0
292                static const String& getPointLightExtruderVs_4_0FiniteDebug(void) { return mPointVs_4_0FiniteDebug; }
293                /// Get extruder program source for debug point lights, compatible with glsl
294                static const String& getPointLightExtruderVs_glslFiniteDebug(void) { return mPointVs_glslFiniteDebug; }
295                /// Get extruder program source for debug point lights, compatible with glsles
296                static const String& getPointLightExtruderVs_glslesFiniteDebug(void) { return mPointVs_glslesFiniteDebug; }
297        /// Get FINITE extruder program source for debug directional lights, compatible with arbvp1
298        static const String& getDirectionalLightExtruderArbvp1FiniteDebug(void) { return mDirArbvp1FiniteDebug; }
299        /// Get FINITE extruder program source for debug directional lights, compatible with vs_1_1
300        static const String& getDirectionalLightExtruderVs_1_1FiniteDebug(void) { return mDirVs_1_1FiniteDebug; }
301                /// Get FINITE extruder program source for debug directional lights, compatible with vs_4_0
302                static const String& getDirectionalLightExtruderVs_4_0FiniteDebug(void) { return mDirVs_4_0FiniteDebug; }
303                /// Get FINITE extruder program source for debug directional lights, compatible with glsl
304                static const String& getDirectionalLightExtruderVs_glslFiniteDebug(void) { return mDirVs_glslFiniteDebug; }
305                /// Get FINITE extruder program source for debug directional lights, compatible with glsles
306                static const String& getDirectionalLightExtruderVs_glslesFiniteDebug(void) { return mDirVs_glslesFiniteDebug; }
307
308    };
309        /** @} */
310        /** @} */
311}
312
313#include "OgreHeaderSuffix.h"
314
315#endif
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