372 lines
12 KiB
C++
372 lines
12 KiB
C++
// SuperTuxKart - a fun racing game with go-kart
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// Copyright (C) 2017 SuperTuxKart-Team
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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 3
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// of the License, or (at your option) any later version.
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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
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#include "graphics/stk_texture.hpp"
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#include "config/user_config.hpp"
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#include "graphics/central_settings.hpp"
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#include "graphics/irr_driver.hpp"
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#include "graphics/graphics_restrictions.hpp"
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#include "graphics/stk_tex_manager.hpp"
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#include "graphics/material.hpp"
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#include "graphics/material_manager.hpp"
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#include "modes/profile_world.hpp"
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#include "utils/log.hpp"
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#include "utils/string_utils.hpp"
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// ----------------------------------------------------------------------------
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STKTexture::STKTexture(const std::string& path, TexConfig* tc, bool no_upload)
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: video::ITexture(path.c_str()), m_single_channel(false),
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m_tex_config(NULL), m_texture_name(0), m_texture_size(0),
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m_texture_image(NULL)
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{
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if (tc != NULL)
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{
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m_tex_config = (TexConfig*)malloc(sizeof(TexConfig));
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memcpy(m_tex_config, tc, sizeof(TexConfig));
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}
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#ifndef SERVER_ONLY
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if (m_tex_config)
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{
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if (ProfileWorld::isNoGraphics() ||
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(!CVS->isDeferredEnabled()) || !CVS->isGLSL())
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{
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m_tex_config->m_srgb = false;
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}
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}
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if (!CVS->isARBTextureSwizzleUsable())
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m_single_channel = false;
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#endif
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reload(no_upload);
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} // STKTexture
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// ----------------------------------------------------------------------------
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STKTexture::STKTexture(uint8_t* data, const std::string& name, unsigned int size,
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bool single_channel)
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: video::ITexture(name.c_str()), m_single_channel(single_channel),
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m_tex_config(NULL), m_texture_name(0), m_texture_size(0),
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m_texture_image(NULL)
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{
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m_size.Width = size;
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m_size.Height = size;
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m_orig_size = m_size;
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reload(false/*no_upload*/, data);
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} // STKTexture
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// ----------------------------------------------------------------------------
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STKTexture::STKTexture(video::IImage* img, const std::string& name)
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: video::ITexture(name.c_str()), m_single_channel(false),
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m_tex_config(NULL), m_texture_name(0), m_texture_size(0),
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m_texture_image(NULL)
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{
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reload(false/*no_upload*/, NULL/*preload_data*/, img);
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} // STKTexture
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// ----------------------------------------------------------------------------
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STKTexture::~STKTexture()
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{
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#ifndef SERVER_ONLY
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if (m_texture_name != 0)
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{
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glDeleteTextures(1, &m_texture_name);
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}
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#endif // !SERVER_ONLY
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if (m_texture_image != NULL)
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m_texture_image->drop();
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free(m_tex_config);
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} // ~STKTexture
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// ----------------------------------------------------------------------------
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void STKTexture::reload(bool no_upload, uint8_t* preload_data,
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video::IImage* preload_img)
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{
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if (ProfileWorld::isNoGraphics())
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{
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m_orig_size.Width = 2;
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m_orig_size.Height = 2;
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m_size = m_orig_size;
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m_texture_name = 1;
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if (preload_data)
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delete[] preload_data;
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if (preload_img)
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preload_img->drop();
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return;
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}
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#ifndef SERVER_ONLY
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video::IImage* orig_img = NULL;
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uint8_t* data = preload_data;
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if (data == NULL)
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{
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orig_img = preload_img ? preload_img :
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irr_driver->getVideoDriver()->createImageFromFile(NamedPath);
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if (orig_img == NULL)
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{
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return;
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}
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if (orig_img->getDimension().Width == 0 ||
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orig_img->getDimension().Height == 0)
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{
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orig_img->drop();
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return;
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}
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orig_img = resizeImage(orig_img, &m_orig_size, &m_size);
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applyMask(orig_img);
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data = orig_img ? (uint8_t*)orig_img->lock() : NULL;
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}
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const unsigned int w = m_size.Width;
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const unsigned int h = m_size.Height;
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unsigned int format = m_single_channel ? GL_RED : GL_BGRA;
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unsigned int internal_format = m_single_channel ? GL_R8 : isSrgb() ?
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GL_SRGB8_ALPHA8 : GL_RGBA8;
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// GLES 2.0 specs doesn't allow GL_RGBA8 internal format
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#if defined(USE_GLES2)
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if (!CVS->isGLSL())
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{
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internal_format = GL_RGBA;
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}
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#endif
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formatConversion(data, &format, w, h);
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if (!no_upload)
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{
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const bool reload = m_texture_name != 0;
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if (!reload)
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glGenTextures(1, &m_texture_name);
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glBindTexture(GL_TEXTURE_2D, m_texture_name);
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if (!reload)
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{
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if (m_single_channel)
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{
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_ONE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_G, GL_ONE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_ONE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, GL_RED);
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}
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glTexImage2D(GL_TEXTURE_2D, 0, internal_format, w, h, 0, format,
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GL_UNSIGNED_BYTE, data);
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}
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else
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{
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glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, w, h, format,
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GL_UNSIGNED_BYTE, data);
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}
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if (orig_img)
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orig_img->unlock();
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if (hasMipMaps())
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glGenerateMipmap(GL_TEXTURE_2D);
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}
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m_texture_size = w * h * (m_single_channel ? 1 : 4);
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if (no_upload)
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m_texture_image = orig_img;
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else if (orig_img)
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orig_img->drop();
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else
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delete[] data;
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if (!no_upload)
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glBindTexture(GL_TEXTURE_2D, 0);
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#endif // !SERVER_ONLY
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} // reload
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//-----------------------------------------------------------------------------
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void STKTexture::formatConversion(uint8_t* data, unsigned int* format,
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unsigned int w, unsigned int h) const
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{
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#ifndef SERVER_ONLY
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#if defined(USE_GLES2)
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if (!m_single_channel)
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{
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if (format)
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*format = GL_RGBA;
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for (unsigned int i = 0; i < w * h; i++)
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{
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uint8_t tmp_val = data[i * 4];
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data[i * 4] = data[i * 4 + 2];
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data[i * 4 + 2] = tmp_val;
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}
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}
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#endif
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if (isPremulAlpha() && !m_single_channel)
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{
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for (unsigned int i = 0; i < w * h; i++)
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{
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float alpha = data[4 * i + 3];
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if (alpha > 0.0f)
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{
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alpha /= 255.0f;
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if (CVS->isDeferredEnabled())
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{
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alpha = pow(alpha, 1.0f / 2.2f);
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}
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}
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data[i * 4] = (uint8_t)(data[i * 4] * alpha);
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data[i * 4 + 1] = (uint8_t)(data[i * 4 + 1] * alpha);
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data[i * 4 + 2] = (uint8_t)(data[i * 4 + 2] * alpha);
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}
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}
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#endif // !SERVER_ONLY
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} // formatConversion
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// ----------------------------------------------------------------------------
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video::IImage* STKTexture::resizeImage(video::IImage* orig_img,
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core::dimension2du* orig_size,
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core::dimension2du* final_size) const
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{
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video::IImage* image = orig_img;
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#ifndef SERVER_ONLY
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if (image == NULL)
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assert(orig_size && orig_size->Width > 0 && orig_size->Height > 0);
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video::IVideoDriver* driver = irr_driver->getVideoDriver();
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core::dimension2du img_size = image ? image->getDimension() : *orig_size;
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bool has_npot = !GraphicsRestrictions::isDisabled(
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GraphicsRestrictions::GR_NPOT_TEXTURES) &&
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driver->queryFeature(video::EVDF_TEXTURE_NPOT);
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core::dimension2du tex_size = img_size.getOptimalSize(!has_npot);
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const core::dimension2du& max_size = driver->getDriverAttributes().
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getAttributeAsDimension2d("MAX_TEXTURE_SIZE");
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if (tex_size.Width > max_size.Width)
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tex_size.Width = max_size.Width;
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if (tex_size.Height > max_size.Height)
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tex_size.Height = max_size.Height;
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if (orig_size && final_size)
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{
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*orig_size = img_size;
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*final_size = tex_size;
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}
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if (image == NULL)
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return NULL;
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if (image->getColorFormat() != video::ECF_A8R8G8B8 ||
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tex_size != img_size)
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{
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video::IImage* new_texture = driver->createImage(video::ECF_A8R8G8B8,
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tex_size);
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if (tex_size != img_size)
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image->copyToScaling(new_texture);
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else
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image->copyTo(new_texture);
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image->drop();
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image = new_texture;
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}
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#endif // !SERVER_ONLY
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return image;
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} // resizeImage
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// ----------------------------------------------------------------------------
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void STKTexture::applyMask(video::IImage* orig_img)
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{
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#ifndef SERVER_ONLY
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Material* material = NULL;
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if (material_manager)
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{
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material = material_manager->getMaterialFor(this);
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}
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if (material && !material->getAlphaMask().empty())
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{
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video::IImage* converted_mask = irr_driver->getVideoDriver()
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->createImageFromFile(material->getAlphaMask().c_str());
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if (converted_mask == NULL)
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{
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Log::warn("STKTexture", "Applying mask failed for '%s'!",
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material->getAlphaMask().c_str());
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return;
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}
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converted_mask = resizeImage(converted_mask);
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if (converted_mask->lock())
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{
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const core::dimension2du& dim = orig_img->getDimension();
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for (unsigned int x = 0; x < dim.Width; x++)
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{
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for (unsigned int y = 0; y < dim.Height; y++)
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{
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video::SColor col = orig_img->getPixel(x, y);
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video::SColor alpha = converted_mask->getPixel(x, y);
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col.setAlpha(alpha.getRed());
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orig_img->setPixel(x, y, col, false);
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} // for y
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} // for x
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}
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converted_mask->unlock();
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converted_mask->drop();
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}
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#endif // !SERVER_ONLY
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} // applyMask
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//-----------------------------------------------------------------------------
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bool STKTexture::hasMipMaps() const
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{
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#if defined(USE_GLES2)
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return true;
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#elif defined(SERVER_ONLY)
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return false;
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#else
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return CVS->getGLSLVersion() >= 130;
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#endif // !SERVER_ONLY
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} // hasMipMaps
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//-----------------------------------------------------------------------------
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void* STKTexture::lock(video::E_TEXTURE_LOCK_MODE mode, u32 mipmap_level)
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{
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if (m_texture_image)
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return m_texture_image->lock();
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#if !(defined(SERVER_ONLY) || defined(USE_GLES2))
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uint8_t* pixels = new uint8_t[m_size.Width * m_size.Height * 4]();
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GLint tmp_texture;
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glGetIntegerv(GL_TEXTURE_BINDING_2D, &tmp_texture);
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glBindTexture(GL_TEXTURE_2D, m_texture_name);
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glGetTexImage(GL_TEXTURE_2D, 0, GL_BGRA, GL_UNSIGNED_BYTE, pixels);
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glBindTexture(GL_TEXTURE_2D, tmp_texture);
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return pixels;
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#endif // !SERVER_ONLY
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return NULL;
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} // lock
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//-----------------------------------------------------------------------------
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bool STKTexture::isSrgb() const
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{
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return m_tex_config && m_tex_config->m_srgb;
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} // isSrgb
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//-----------------------------------------------------------------------------
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bool STKTexture::isPremulAlpha() const
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{
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return m_tex_config && m_tex_config->m_premul_alpha;
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} // isPremulAlpha
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//-----------------------------------------------------------------------------
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bool STKTexture::isMeshTexture() const
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{
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return m_tex_config && m_tex_config->m_mesh_tex;
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} // isMeshTexture
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