[1] | 1 | /* |
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| 2 | ----------------------------------------------------------------------------- |
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| 3 | This source file is part of OGRE |
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| 4 | (Object-oriented Graphics Rendering Engine) |
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| 5 | For the latest info, see http://www.ogre3d.org/ |
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| 6 | |
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| 7 | Copyright (c) 2000-2006 Torus Knot Software Ltd |
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| 8 | Also see acknowledgements in Readme.html |
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| 9 | |
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| 10 | This program is free software; you can redistribute it and/or modify it under |
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| 11 | the terms of the GNU Lesser General Public License as published by the Free Software |
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| 12 | Foundation; either version 2 of the License, or (at your option) any later |
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| 13 | version. |
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| 14 | |
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| 15 | This program is distributed in the hope that it will be useful, but WITHOUT |
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| 16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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| 17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. |
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| 18 | |
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| 19 | You should have received a copy of the GNU Lesser General Public License along with |
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| 20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
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| 21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to |
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| 22 | http://www.gnu.org/copyleft/lesser.txt. |
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| 23 | |
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| 24 | You may alternatively use this source under the terms of a specific version of |
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| 25 | the OGRE Unrestricted License provided you have obtained such a license from |
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| 26 | Torus Knot Software Ltd. |
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| 27 | ----------------------------------------------------------------------------- |
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| 28 | */ |
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| 29 | |
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| 30 | #include "OgreGLGpuNvparseProgram.h" |
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| 31 | #include "OgreException.h" |
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| 32 | #include "OgreRoot.h" |
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| 33 | #include "OgreRenderSystem.h" |
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| 34 | #include "OgreRenderSystemCapabilities.h" |
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| 35 | #include "OgreLogManager.h" |
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| 36 | #include "nvparse.h" |
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| 37 | |
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| 38 | using namespace Ogre; |
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| 39 | |
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| 40 | GLGpuNvparseProgram::GLGpuNvparseProgram(ResourceManager* creator, |
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| 41 | const String& name, ResourceHandle handle, |
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| 42 | const String& group, bool isManual, ManualResourceLoader* loader) |
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| 43 | : GLGpuProgram(creator, name, handle, group, isManual, loader) |
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| 44 | { |
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| 45 | mProgramID = glGenLists(1); |
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| 46 | } |
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| 47 | |
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| 48 | GLGpuNvparseProgram::~GLGpuNvparseProgram() |
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| 49 | { |
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| 50 | // have to call this here reather than in Resource destructor |
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| 51 | // since calling virtual methods in base destructors causes crash |
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| 52 | unload(); |
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| 53 | } |
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| 54 | |
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| 55 | void GLGpuNvparseProgram::bindProgram(void) |
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| 56 | { |
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| 57 | glCallList(mProgramID); |
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| 58 | glEnable(GL_TEXTURE_SHADER_NV); |
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| 59 | glEnable(GL_REGISTER_COMBINERS_NV); |
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| 60 | glEnable(GL_PER_STAGE_CONSTANTS_NV); |
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| 61 | } |
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| 62 | |
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| 63 | void GLGpuNvparseProgram::unbindProgram(void) |
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| 64 | { |
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| 65 | |
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| 66 | glDisable(GL_TEXTURE_SHADER_NV); |
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| 67 | glDisable(GL_REGISTER_COMBINERS_NV); |
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| 68 | glDisable(GL_PER_STAGE_CONSTANTS_NV); |
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| 69 | } |
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| 70 | |
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| 71 | void GLGpuNvparseProgram::bindProgramParameters(GpuProgramParametersSharedPtr params) |
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| 72 | { |
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| 73 | // NB, register combiners uses 2 constants per texture stage (0 and 1) |
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| 74 | // We have stored these as (stage * 2) + const_index in the physical buffer |
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| 75 | // There are no other parameters in a register combiners shader |
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| 76 | const GpuProgramParameters::FloatConstantList& floatList = |
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| 77 | params->getFloatConstantList(); |
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| 78 | size_t index = 0; |
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| 79 | for (GpuProgramParameters::FloatConstantList::const_iterator i = floatList.begin(); |
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| 80 | i != floatList.end(); ++i, ++index) |
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| 81 | { |
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| 82 | GLenum combinerStage = GL_COMBINER0_NV + (unsigned int)(index / 2); |
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| 83 | GLenum pname = GL_CONSTANT_COLOR0_NV + (index % 2); |
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| 84 | glCombinerStageParameterfvNV(combinerStage, pname, &(*i)); |
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| 85 | |
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| 86 | } |
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| 87 | |
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| 88 | } |
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| 89 | void GLGpuNvparseProgram::unloadImpl(void) |
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| 90 | { |
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| 91 | glDeleteLists(mProgramID,1); |
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| 92 | } |
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| 93 | |
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| 94 | void GLGpuNvparseProgram::loadFromSource(void) |
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| 95 | { |
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| 96 | glNewList(mProgramID, GL_COMPILE); |
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| 97 | |
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| 98 | String::size_type pos = mSource.find("!!"); |
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| 99 | |
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| 100 | while (pos != String::npos) { |
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| 101 | String::size_type newPos = mSource.find("!!", pos + 1); |
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| 102 | |
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| 103 | String script = mSource.substr(pos, newPos - pos); |
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| 104 | nvparse(script.c_str(), 0); |
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| 105 | |
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| 106 | for (char* const * errors= nvparse_get_errors(); *errors; errors++) |
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| 107 | { |
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| 108 | LogManager::getSingleton().logMessage("Warning: nvparse reported the following errors:"); |
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| 109 | LogManager::getSingleton().logMessage("\t" + String(*errors)); |
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| 110 | } |
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| 111 | |
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| 112 | pos = newPos; |
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| 113 | } |
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| 114 | |
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| 115 | glEndList(); |
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| 116 | } |
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| 117 | |
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