forked from bartvdbraak/blender
209a2ede2c
#ifdef HAVE_CONFIG_H #include <config.h> #endif added to these files. Kent -- mein@cs.umn.edu
376 lines
8.9 KiB
C++
376 lines
8.9 KiB
C++
/**
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* $Id$
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*
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* ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version. The Blender
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* Foundation also sells licenses for use in proprietary software under
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* the Blender License. See http://www.blender.org/BL/ for information
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* about this.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL/BL DUAL LICENSE BLOCK *****
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifdef WIN32
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#include <windows.h>
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#endif
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#include "RAS_IPolygonMaterial.h"
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#include "GPC_Canvas.h"
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GPC_Canvas::TBannerId GPC_Canvas::s_bannerId = 0;
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GPC_Canvas::GPC_Canvas(
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int width,
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int height
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) :
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m_width(width),
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m_height(height),
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m_bannersEnabled(false)
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{
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}
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GPC_Canvas::~GPC_Canvas()
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{
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DisposeAllBanners();
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}
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// void GPC_Canvas::InitPostRenderingContext(void)
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// {
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// glViewport(0, 0, m_width, m_height);
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// glMatrixMode(GL_PROJECTION);
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// glLoadIdentity();
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// glOrtho(-2.0, 2.0, -2.0, 2.0, -20.0, 20.0);
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// glMatrixMode(GL_MODELVIEW);
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// glLoadIdentity();
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// glEnable(GL_DEPTH_TEST);
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// glDepthFunc(GL_LESS);
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// glShadeModel(GL_SMOOTH);
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// }
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void GPC_Canvas::Resize(int width, int height)
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{
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m_width = width;
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m_height = height;
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}
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void GPC_Canvas::EndFrame()
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{
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if (m_bannersEnabled)
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DrawAllBanners();
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}
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void GPC_Canvas::ClearColor(float r, float g, float b, float a)
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{
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::glClearColor(r,g,b,a);
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}
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void GPC_Canvas::SetViewPort(int x1, int y1, int x2, int y2)
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{
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/* XXX, nasty, this needs to go somewhere else,
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* but where... definitly need to clean up this
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* whole canvas/rendertools mess.
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*/
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glEnable(GL_SCISSOR_TEST);
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glViewport(x1,y1,x2-x1 + 1,y2-y1 + 1);
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glScissor(x1,y1,x2-x1 + 1,y2-y1 + 1);
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};
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void GPC_Canvas::ClearBuffer(
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int type
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){
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int ogltype = 0;
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if (type & RAS_ICanvas::COLOR_BUFFER )
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ogltype |= GL_COLOR_BUFFER_BIT;
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if (type & RAS_ICanvas::DEPTH_BUFFER )
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ogltype |= GL_DEPTH_BUFFER_BIT;
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::glClear(ogltype);
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}
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GPC_Canvas::TBannerId GPC_Canvas::AddBanner(
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unsigned int bannerWidth, unsigned int bannerHeight,
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unsigned int imageWidth, unsigned int imageHeight,
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unsigned char* imageData,
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TBannerAlignment alignment, bool enabled)
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{
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TBannerData banner;
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banner.alignment = alignment;
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banner.enabled = enabled;
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banner.displayWidth = bannerWidth;
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banner.displayHeight = bannerHeight;
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banner.imageWidth = imageWidth;
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banner.imageHeight = imageHeight;
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unsigned int bannerDataSize = imageWidth*imageHeight*4;
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banner.imageData = new unsigned char [bannerDataSize];
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::memcpy(banner.imageData, imageData, bannerDataSize);
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banner.textureName = 0;
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m_banners.insert(TBannerMap::value_type(++s_bannerId, banner));
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return s_bannerId;
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}
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void GPC_Canvas::DisposeBanner(TBannerId id)
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{
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TBannerMap::iterator it = m_banners.find(id);
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if (it != m_banners.end()) {
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DisposeBanner(it->second);
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m_banners.erase(it);
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}
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}
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void GPC_Canvas::DisposeAllBanners()
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{
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TBannerMap::iterator it = m_banners.begin();
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while (it != m_banners.end()) {
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DisposeBanner(it->second);
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it++;
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}
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}
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void GPC_Canvas::SetBannerEnabled(TBannerId id, bool enabled)
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{
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TBannerMap::iterator it = m_banners.find(id);
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if (it != m_banners.end()) {
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it->second.enabled = enabled;
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}
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}
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void GPC_Canvas::SetBannerDisplayEnabled(bool enabled)
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{
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m_bannersEnabled = enabled;
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}
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void GPC_Canvas::DisposeBanner(TBannerData& banner)
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{
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if (banner.imageData) {
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delete [] banner.imageData;
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banner.imageData = 0;
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}
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if (banner.textureName) {
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::glDeleteTextures(1, (GLuint*)&banner.textureName);
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}
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}
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void GPC_Canvas::DrawAllBanners(void)
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{
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if(!m_bannersEnabled || (m_banners.size() < 1))
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return;
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// Save the old rendering parameters.
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CanvasRenderState render_state;
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PushRenderState(render_state);
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// Set up everything for banner display.
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// Set up OpenGL matrices
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SetOrthoProjection();
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// Activate OpenGL settings needed for display of the texture
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::glDisable(GL_LIGHTING);
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::glDisable(GL_DEPTH_TEST);
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::glDisable(GL_FOG);
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::glEnable(GL_TEXTURE_2D);
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::glEnable(GL_BLEND);
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::glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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TBannerMap::iterator it = m_banners.begin();
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while (it != m_banners.end()) {
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if (it->second.enabled) {
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DrawBanner(it->second);
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}
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it++;
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}
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PopRenderState(render_state);
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}
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void GPC_Canvas::DrawBanner(TBannerData& banner)
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{
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if(!banner.enabled)
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return;
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// Set up coordinates
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int coords[4][2];
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if (banner.alignment == alignTopLeft) {
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// Upper left
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coords[0][0] = 0;
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coords[0][1] = ((int)m_height)-banner.displayHeight;
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coords[1][0] = banner.displayWidth;
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coords[1][1] = ((int)m_height)-banner.displayHeight;
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coords[2][0] = banner.displayWidth;
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coords[2][1] = ((int)m_height);
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coords[3][0] = 0;
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coords[3][1] = ((int)m_height);
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}
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else {
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// Lower right
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coords[0][0] = (int)m_width - banner.displayWidth;
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coords[0][1] = 0;
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coords[1][0] = m_width;
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coords[1][1] = 0;
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coords[2][0] = m_width;
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coords[2][1] = banner.displayHeight;
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coords[3][0] = (int)m_width - banner.displayWidth;
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coords[3][1] = banner.displayHeight;
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}
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// Set up uvs
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int uvs[4][2] = {
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{ 0, 1},
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{ 1, 1},
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{ 1, 0},
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{ 0, 0}
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};
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if (!banner.textureName) {
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::glGenTextures(1, (GLuint*)&banner.textureName);
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::glBindTexture(GL_TEXTURE_2D, banner.textureName);
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::glTexImage2D(
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GL_TEXTURE_2D, // target
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0, // level
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4, // components
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banner.imageWidth, // width
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banner.displayHeight, // height
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0, // border
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GL_RGBA, // format
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GL_UNSIGNED_BYTE, // type
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banner.imageData); // image data
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::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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}
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else {
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::glBindTexture(GL_TEXTURE_2D, banner.textureName);
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}
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// Draw the rectangle with the texture on it
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::glBegin(GL_QUADS);
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::glColor4f(1.f, 1.f, 1.f, 1.f);
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::glTexCoord2iv((GLint*)uvs[0]);
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::glVertex2iv((GLint*)coords[0]);
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::glTexCoord2iv((GLint*)uvs[1]);
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::glVertex2iv((GLint*)coords[1]);
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::glTexCoord2iv((GLint*)uvs[2]);
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::glVertex2iv((GLint*)coords[2]);
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::glTexCoord2iv((GLint*)uvs[3]);
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::glVertex2iv((GLint*)coords[3]);
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::glEnd();
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}
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void
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GPC_Canvas::
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PushRenderState(
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CanvasRenderState & render_state
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){
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#if 0
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::glMatrixMode(GL_PROJECTION);
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::glPushMatrix();
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::glMatrixMode(GL_MODELVIEW);
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::glPushMatrix();
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::glMatrixMode(GL_TEXTURE);
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::glPushMatrix();
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// Save old OpenGL settings
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::glGetIntegerv(GL_LIGHTING, (GLint*)&(render_state.oldLighting));
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::glGetIntegerv(GL_DEPTH_TEST, (GLint*)&(render_state.oldDepthTest));
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::glGetIntegerv(GL_FOG, (GLint*)&(render_state.oldFog));
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::glGetIntegerv(GL_TEXTURE_2D, (GLint*)&(render_state.oldTexture2D));
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::glGetIntegerv(GL_BLEND, (GLint*)&(render_state.oldBlend));
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::glGetIntegerv(GL_BLEND_SRC, (GLint*)&(render_state.oldBlendSrc));
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::glGetIntegerv(GL_BLEND_DST, (GLint*)&(render_state.oldBlendDst));
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::glGetFloatv(GL_CURRENT_COLOR, render_state.oldColor);
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::glGetIntegerv(GL_DEPTH_WRITEMASK,(GLint*)&(render_state.oldWriteMask));
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#else
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glPushAttrib(GL_ALL_ATTRIB_BITS);
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#endif
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}
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void
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GPC_Canvas::
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PopRenderState(
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const CanvasRenderState & render_state
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){
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#if 0
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// Restore OpenGL settings
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render_state.oldLighting ? ::glEnable(GL_LIGHTING) : glDisable(GL_LIGHTING);
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render_state.oldDepthTest ? ::glEnable(GL_DEPTH_TEST) : glDisable(GL_DEPTH_TEST);
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render_state.oldFog ? ::glEnable(GL_FOG) : ::glDisable(GL_FOG);
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render_state.oldTexture2D ? ::glEnable(GL_TEXTURE_2D) : glDisable(GL_TEXTURE_2D);
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render_state.oldBlend ? glEnable(GL_BLEND) : ::glDisable(GL_BLEND);
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::glBlendFunc((GLenum)render_state.oldBlendSrc, (GLenum)render_state.oldBlendDst);
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render_state.oldWriteMask ? ::glEnable(GL_DEPTH_WRITEMASK) : glDisable(GL_DEPTH_WRITEMASK);
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::glColor4fv(render_state.oldColor);
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// Restore OpenGL matrices
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::glMatrixMode(GL_TEXTURE);
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::glPopMatrix();
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::glMatrixMode(GL_PROJECTION);
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::glPopMatrix();
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::glMatrixMode(GL_MODELVIEW);
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::glPopMatrix();
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#else
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glPopAttrib();
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#endif
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}
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void
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GPC_Canvas::
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SetOrthoProjection(
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){
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// Set up OpenGL matrices
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::glViewport(0, 0, m_width, m_height);
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::glScissor(0, 0, m_width, m_height);
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::glMatrixMode(GL_PROJECTION);
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::glLoadIdentity();
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::glOrtho(0, m_width, 0, m_height, -1, 1);
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::glMatrixMode(GL_MODELVIEW);
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::glLoadIdentity();
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::glMatrixMode(GL_TEXTURE);
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::glLoadIdentity();
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}
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