void OpenGLRenderManager::doRender(IVertexBuffer* _buffer, ITexture* _texture, size_t _count)
{
OpenGLVertexBuffer* buffer = static_cast<OpenGLVertexBuffer*>(_buffer);
unsigned int buffer_id = buffer->getBufferID();
MYGUI_PLATFORM_ASSERT(buffer_id, "Vertex buffer is not created");
unsigned int texture_id = 0;
if (_texture)
{
OpenGLTexture* texture = static_cast<OpenGLTexture*>(_texture);
texture_id = texture->getTextureID();
//MYGUI_PLATFORM_ASSERT(texture_id, "Texture is not created");
}
glBindTexture(GL_TEXTURE_2D, texture_id);
glBindBuffer(GL_ARRAY_BUFFER, buffer_id);
// enable vertex arrays
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
// before draw, specify vertex and index arrays with their offsets
size_t offset = 0;
glVertexPointer(3, GL_FLOAT, sizeof(Vertex), (void*)offset);
offset += (sizeof(float) * 3);
glColorPointer(4, GL_UNSIGNED_BYTE, sizeof(Vertex), (void*)offset);
offset += (4);
glTexCoordPointer(2, GL_FLOAT, sizeof(Vertex), (void*)offset);
glDrawArrays(GL_TRIANGLES, 0, _count);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindTexture(GL_TEXTURE_2D, 0);
}
void OpenGLRenderer::drawVertexBuffer(VertexBuffer *buffer, bool enableColorBuffer) {
OpenGLVertexBuffer *glVertexBuffer = (OpenGLVertexBuffer*)buffer;
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnableClientState(GL_NORMAL_ARRAY);
if(enableColorBuffer) {
glEnableClientState(GL_COLOR_ARRAY);
glBindBufferARB( GL_ARRAY_BUFFER_ARB, glVertexBuffer->getColorBufferID());
glColorPointer( 4, GL_FLOAT, 0, (char *) NULL );
}
glBindBufferARB( GL_ARRAY_BUFFER_ARB, glVertexBuffer->getVertexBufferID());
glVertexPointer( 3, GL_FLOAT, 0, (char *) NULL );
glBindBufferARB( GL_ARRAY_BUFFER_ARB, glVertexBuffer->getNormalBufferID());
glNormalPointer(GL_FLOAT, 0, (char *) NULL );
glBindBufferARB( GL_ARRAY_BUFFER_ARB, glVertexBuffer->getTextCoordBufferID());
glTexCoordPointer( 2, GL_FLOAT, 0, (char *) NULL );
glBindBufferARB( GL_ARRAY_BUFFER_ARB, glVertexBuffer->getTangentBufferID());
glEnableVertexAttribArrayARB(6);
glVertexAttribPointer(6, 3, GL_FLOAT, 0, 0, (char *)NULL);
GLenum mode = GL_TRIANGLES;
switch(buffer->meshType) {
case Mesh::TRI_MESH:
mode = GL_TRIANGLES;
break;
case Mesh::TRIFAN_MESH:
mode = GL_TRIANGLE_FAN;
break;
case Mesh::QUAD_MESH:
mode = GL_QUADS;
break;
case Mesh::LINE_STRIP_MESH:
mode = GL_LINE_STRIP;
break;
case Mesh::LINE_LOOP_MESH:
mode = GL_LINE_LOOP;
break;
case Mesh::LINE_MESH:
mode = GL_LINES;
break;
case Mesh::POINT_MESH:
mode = GL_POINTS;
break;
}
glDrawArrays( mode, 0, buffer->getVertexCount() );
glDisableClientState( GL_VERTEX_ARRAY);
glDisableClientState( GL_TEXTURE_COORD_ARRAY );
glDisableClientState( GL_NORMAL_ARRAY );
if(enableColorBuffer) {
glDisableClientState( GL_COLOR_ARRAY );
}
}
void OpenGLRenderer::drawVertexBuffer(VertexBuffer *buffer) {
OpenGLVertexBuffer *glVertexBuffer = (OpenGLVertexBuffer*)buffer;
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnableClientState(GL_NORMAL_ARRAY);
// glEnableClientState(GL_COLOR_ARRAY);
// glBindBufferARB( GL_ARRAY_BUFFER_ARB, glVertexBuffer->getColorBufferID());
// glTexCoordPointer( 4, GL_FLOAT, 0, (char *) NULL );
glBindBufferARB( GL_ARRAY_BUFFER_ARB, glVertexBuffer->getVertexBufferID());
glVertexPointer( 3, GL_FLOAT, 0, (char *) NULL );
glBindBufferARB( GL_ARRAY_BUFFER_ARB, glVertexBuffer->getNormalBufferID());
glNormalPointer(GL_FLOAT, 0, (char *) NULL );
glBindBufferARB( GL_ARRAY_BUFFER_ARB, glVertexBuffer->getTextCoordBufferID());
glTexCoordPointer( 2, GL_FLOAT, 0, (char *) NULL );
GLenum mode = GL_TRIANGLES;
switch(buffer->meshType) {
case Mesh::TRI_MESH:
switch(renderMode) {
case RENDER_MODE_NORMAL:
mode = GL_TRIANGLES;
break;
case RENDER_MODE_WIREFRAME:
mode = GL_LINE_LOOP;
break;
}
break;
case Mesh::TRIFAN_MESH:
switch(renderMode) {
case RENDER_MODE_NORMAL:
mode = GL_TRIANGLE_FAN;
break;
case RENDER_MODE_WIREFRAME:
mode = GL_LINE_LOOP;
break;
}
break;
case Mesh::QUAD_MESH:
switch(renderMode) {
case RENDER_MODE_NORMAL:
mode = GL_QUADS;
break;
case RENDER_MODE_WIREFRAME:
mode = GL_LINE_LOOP;
break;
}
break;
case Mesh::LINE_MESH:
mode = GL_LINES;
break;
case Mesh::POINT_MESH:
mode = GL_POINTS;
break;
}
glDrawArrays( mode, 0, buffer->getVertexCount() );
glDisableClientState( GL_VERTEX_ARRAY);
glDisableClientState( GL_TEXTURE_COORD_ARRAY );
glDisableClientState( GL_NORMAL_ARRAY );
// glDisableClientState( GL_COLOR_ARRAY );
}
