diff options
Diffstat (limited to 'source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_StorageVBO.cpp')
| -rw-r--r-- | source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_StorageVBO.cpp | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_StorageVBO.cpp b/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_StorageVBO.cpp new file mode 100644 index 00000000000..3de77951fa7 --- /dev/null +++ b/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_StorageVBO.cpp @@ -0,0 +1,258 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * This program 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. + * + * This program 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 program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): none yet. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +#include "RAS_StorageVBO.h" +#include "RAS_MeshObject.h" + +#include "GL/glew.h" + +VBO::VBO(RAS_DisplayArray *data, unsigned int indices) +{ + this->data = data; + this->size = data->m_vertex.size(); + this->indices = indices; + this->stride = 32*sizeof(GLfloat); // ATI cards really like 32byte aligned VBOs, so we add a little padding + + // Determine drawmode + if (data->m_type == data->QUAD) + this->mode = GL_QUADS; + else if (data->m_type == data->TRIANGLE) + this->mode = GL_TRIANGLES; + else + this->mode = GL_LINE; + + // Generate Buffers + glGenBuffersARB(1, &this->ibo); + glGenBuffersARB(1, &this->vbo_id); + + // Fill the buffers with initial data + UpdateIndices(); + UpdateData(); + + // Establish offsets + this->vertex_offset = 0; + this->normal_offset = (void*)(3*sizeof(GLfloat)); + this->tangent_offset = (void*)(6*sizeof(GLfloat)); + this->color_offset = (void*)(10*sizeof(GLfloat)); + this->uv_offset = (void*)(11*sizeof(GLfloat)); +} + +VBO::~VBO() +{ + glDeleteBuffersARB(1, &this->ibo); + glDeleteBuffersARB(1, &this->vbo_id); +} + +void VBO::UpdateData() +{ + unsigned int i, j, k; + + glBindBufferARB(GL_ARRAY_BUFFER_ARB, this->vbo_id); + glBufferData(GL_ARRAY_BUFFER, this->stride*this->size, NULL, GL_STATIC_DRAW); + + // Map the buffer + GLfloat *vbo_map = (GLfloat*)glMapBufferARB(GL_ARRAY_BUFFER_ARB, GL_WRITE_ONLY_ARB); + + // Gather data + for (i = 0, j = 0; i < data->m_vertex.size(); i++, j += this->stride/sizeof(GLfloat)) + { + memcpy(&vbo_map[j], data->m_vertex[i].getXYZ(), sizeof(float)*3); + memcpy(&vbo_map[j+3], data->m_vertex[i].getNormal(), sizeof(float)*3); + memcpy(&vbo_map[j+6], data->m_vertex[i].getTangent(), sizeof(float)*4); + memcpy(&vbo_map[j+10], data->m_vertex[i].getRGBA(), sizeof(char)*4); + + for (k = 0; k < RAS_TexVert::MAX_UNIT; k++) + memcpy(&vbo_map[j+11+(k*2)], data->m_vertex[i].getUV(k), sizeof(float)*2); + } + + glUnmapBufferARB(GL_ARRAY_BUFFER_ARB); +} + +void VBO::UpdateIndices() +{ + int space = data->m_index.size() * sizeof(GLushort); + glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, this->ibo); + + // Upload Data to VBO + glBufferData(GL_ELEMENT_ARRAY_BUFFER, space, &data->m_index[0], GL_STATIC_DRAW); +} + +void VBO::Draw(int texco_num, RAS_IRasterizer::TexCoGen* texco, int attrib_num, RAS_IRasterizer::TexCoGen* attrib, int *attrib_layer, bool multi) +{ + int unit; + + // Bind buffers + glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, this->ibo); + glBindBufferARB(GL_ARRAY_BUFFER_ARB, this->vbo_id); + + // Vertexes + glEnableClientState(GL_VERTEX_ARRAY); + glVertexPointer(3, GL_FLOAT, this->stride, this->vertex_offset); + + // Normals + glEnableClientState(GL_NORMAL_ARRAY); + glNormalPointer(GL_FLOAT, this->stride, this->normal_offset); + + // Colors + glEnableClientState(GL_COLOR_ARRAY); + glColorPointer(4, GL_UNSIGNED_BYTE, this->stride, this->color_offset); + + if (multi) + { + for (unit = 0; unit < texco_num; ++unit) + { + glClientActiveTexture(GL_TEXTURE0_ARB + unit); + switch (texco[unit]) { + case RAS_IRasterizer::RAS_TEXCO_ORCO: + case RAS_IRasterizer::RAS_TEXCO_GLOB: + glEnableClientState(GL_TEXTURE_COORD_ARRAY); + glTexCoordPointer(3, GL_FLOAT, this->stride, this->vertex_offset); + break; + case RAS_IRasterizer::RAS_TEXCO_UV: + glEnableClientState(GL_TEXTURE_COORD_ARRAY); + glTexCoordPointer(2, GL_FLOAT, this->stride, (void*)((intptr_t)this->uv_offset+(sizeof(GLfloat)*2*unit))); + break; + case RAS_IRasterizer::RAS_TEXCO_NORM: + glEnableClientState(GL_TEXTURE_COORD_ARRAY); + glTexCoordPointer(3, GL_FLOAT, this->stride, this->normal_offset); + break; + case RAS_IRasterizer::RAS_TEXTANGENT: + glEnableClientState(GL_TEXTURE_COORD_ARRAY); + glTexCoordPointer(4, GL_FLOAT, this->stride, this->tangent_offset); + break; + default: + break; + } + } + glClientActiveTextureARB(GL_TEXTURE0_ARB); + } + else //TexFace + { + glClientActiveTextureARB(GL_TEXTURE0_ARB); + glEnableClientState(GL_TEXTURE_COORD_ARRAY); + glTexCoordPointer(2, GL_FLOAT, this->stride, this->uv_offset); + } + + if (GLEW_ARB_vertex_program) + { + for (unit = 0; unit < attrib_num; ++unit) + { + switch (attrib[unit]) { + case RAS_IRasterizer::RAS_TEXCO_ORCO: + case RAS_IRasterizer::RAS_TEXCO_GLOB: + glVertexAttribPointerARB(unit, 3, GL_FLOAT, GL_FALSE, this->stride, this->vertex_offset); + glEnableVertexAttribArrayARB(unit); + break; + case RAS_IRasterizer::RAS_TEXCO_UV: + glVertexAttribPointerARB(unit, 2, GL_FLOAT, GL_FALSE, this->stride, (void*)((intptr_t)this->uv_offset+attrib_layer[unit]*sizeof(GLfloat)*2)); + glEnableVertexAttribArrayARB(unit); + break; + case RAS_IRasterizer::RAS_TEXCO_NORM: + glVertexAttribPointerARB(unit, 2, GL_FLOAT, GL_FALSE, stride, this->normal_offset); + glEnableVertexAttribArrayARB(unit); + break; + case RAS_IRasterizer::RAS_TEXTANGENT: + glVertexAttribPointerARB(unit, 4, GL_FLOAT, GL_FALSE, this->stride, this->tangent_offset); + glEnableVertexAttribArrayARB(unit); + break; + default: + break; + } + } + } + + glDrawElements(this->mode, this->indices, GL_UNSIGNED_SHORT, 0); + + glDisableClientState(GL_VERTEX_ARRAY); + glDisableClientState(GL_NORMAL_ARRAY); + glDisableClientState(GL_COLOR_ARRAY); + glDisableClientState(GL_TEXTURE_COORD_ARRAY); + + if (GLEW_ARB_vertex_program) + { + for (int i = 0; i < attrib_num; ++i) + glDisableVertexAttribArrayARB(i); + } + + glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0); + glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0); +} + +RAS_StorageVBO::RAS_StorageVBO(int *texco_num, RAS_IRasterizer::TexCoGen *texco, int *attrib_num, RAS_IRasterizer::TexCoGen *attrib, int *attrib_layer): + m_texco_num(texco_num), + m_attrib_num(attrib_num), + m_texco(texco), + m_attrib(attrib), + m_attrib_layer(attrib_layer) +{ +} + +RAS_StorageVBO::~RAS_StorageVBO() +{ +} + +bool RAS_StorageVBO::Init() +{ + return true; +} + +void RAS_StorageVBO::Exit() +{ + m_vbo_lookup.clear(); +} + +void RAS_StorageVBO::IndexPrimitives(RAS_MeshSlot& ms) +{ + IndexPrimitivesInternal(ms, false); +} + +void RAS_StorageVBO::IndexPrimitivesMulti(RAS_MeshSlot& ms) +{ + IndexPrimitivesInternal(ms, true); +} + +void RAS_StorageVBO::IndexPrimitivesInternal(RAS_MeshSlot& ms, bool multi) +{ + RAS_MeshSlot::iterator it; + VBO *vbo; + + for (ms.begin(it); !ms.end(it); ms.next(it)) + { + vbo = m_vbo_lookup[it.array]; + + if (vbo == 0) + m_vbo_lookup[it.array] = vbo = new VBO(it.array, it.totindex); + + // Update the vbo + if (ms.m_mesh->MeshModified()) + { + vbo->UpdateData(); + } + + vbo->Draw(*m_texco_num, m_texco, *m_attrib_num, m_attrib, m_attrib_layer, multi); + } +} |