vladislavbelov
4f39e6675a
Removes usages of fixed pipeline functions in shader path. Tested By: Stan Differential Revision: https://code.wildfiregames.com/D2944 This was SVN commit r23954.
377 lines
12 KiB
C++
377 lines
12 KiB
C++
/* Copyright (C) 2020 Wildfire Games.
|
|
* This file is part of 0 A.D.
|
|
*
|
|
* 0 A.D. 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.
|
|
*
|
|
* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/*
|
|
* Sky settings, texture management and rendering.
|
|
*/
|
|
|
|
#include "precompiled.h"
|
|
|
|
#include <algorithm>
|
|
|
|
#include "graphics/LightEnv.h"
|
|
#include "graphics/ShaderManager.h"
|
|
#include "graphics/Terrain.h"
|
|
#include "graphics/TextureManager.h"
|
|
#include "lib/timer.h"
|
|
#include "lib/tex/tex.h"
|
|
#include "lib/res/graphics/ogl_tex.h"
|
|
#include "maths/MathUtil.h"
|
|
#include "ps/CStr.h"
|
|
#include "ps/CLogger.h"
|
|
#include "ps/Game.h"
|
|
#include "ps/Loader.h"
|
|
#include "ps/Filesystem.h"
|
|
#include "ps/World.h"
|
|
#include "renderer/SkyManager.h"
|
|
#include "renderer/Renderer.h"
|
|
#include "renderer/RenderingOptions.h"
|
|
|
|
SkyManager::SkyManager()
|
|
: m_RenderSky(true), m_SkyCubeMap(0)
|
|
{
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////
|
|
// Load all sky textures
|
|
void SkyManager::LoadSkyTextures()
|
|
{
|
|
static const CStrW images[NUMBER_OF_TEXTURES + 1] = {
|
|
L"front",
|
|
L"back",
|
|
L"right",
|
|
L"left",
|
|
L"top",
|
|
L"top"
|
|
};
|
|
/*for (size_t i = 0; i < ARRAY_SIZE(m_SkyTexture); ++i)
|
|
{
|
|
VfsPath path = VfsPath("art/textures/skies") / m_SkySet / (Path::String(s_imageNames[i])+L".dds");
|
|
|
|
CTextureProperties textureProps(path);
|
|
textureProps.SetWrap(GL_CLAMP_TO_EDGE);
|
|
CTexturePtr texture = g_Renderer.GetTextureManager().CreateTexture(textureProps);
|
|
texture->Prefetch();
|
|
m_SkyTexture[i] = texture;
|
|
}*/
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// HACK: THE HORRIBLENESS HERE IS OVER 9000. The following code is a HUGE hack and will be removed completely
|
|
// as soon as all the hardcoded GL_TEXTURE_2D references are corrected in the TextureManager/OGL/tex libs.
|
|
|
|
glGenTextures(1, &m_SkyCubeMap);
|
|
glBindTexture(GL_TEXTURE_CUBE_MAP, m_SkyCubeMap);
|
|
|
|
static const int types[] = {
|
|
GL_TEXTURE_CUBE_MAP_POSITIVE_X,
|
|
GL_TEXTURE_CUBE_MAP_NEGATIVE_X,
|
|
GL_TEXTURE_CUBE_MAP_POSITIVE_Z,
|
|
GL_TEXTURE_CUBE_MAP_NEGATIVE_Z,
|
|
GL_TEXTURE_CUBE_MAP_POSITIVE_Y,
|
|
GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
|
|
};
|
|
|
|
for (size_t i = 0; i < NUMBER_OF_TEXTURES + 1; ++i)
|
|
{
|
|
VfsPath path = VfsPath("art/textures/skies") / m_SkySet / (Path::String(images[i])+L".dds");
|
|
|
|
shared_ptr<u8> file;
|
|
size_t fileSize;
|
|
if (g_VFS->LoadFile(path, file, fileSize) != INFO::OK)
|
|
{
|
|
path = VfsPath("art/textures/skies") / m_SkySet / (Path::String(images[i])+L".dds.cached.dds");
|
|
if (g_VFS->LoadFile(path, file, fileSize) != INFO::OK)
|
|
{
|
|
glDeleteTextures(1, &m_SkyCubeMap);
|
|
LOGERROR("Error creating sky cubemap.");
|
|
return;
|
|
}
|
|
}
|
|
|
|
Tex tex;
|
|
tex.decode(file, fileSize);
|
|
|
|
tex.transform_to((tex.m_Flags | TEX_BOTTOM_UP | TEX_ALPHA) & ~(TEX_DXT | TEX_MIPMAPS));
|
|
|
|
u8* data = tex.get_data();
|
|
|
|
if (types[i] == GL_TEXTURE_CUBE_MAP_NEGATIVE_Y || types[i] == GL_TEXTURE_CUBE_MAP_POSITIVE_Y)
|
|
{
|
|
std::vector<u8> rotated(tex.m_DataSize);
|
|
|
|
for (size_t y = 0; y < tex.m_Height; ++y)
|
|
{
|
|
for (size_t x = 0; x < tex.m_Width; ++x)
|
|
{
|
|
size_t invx = y, invy = tex.m_Width-x-1;
|
|
|
|
rotated[(y*tex.m_Width + x) * 4 + 0] = data[(invy*tex.m_Width + invx) * 4 + 0];
|
|
rotated[(y*tex.m_Width + x) * 4 + 1] = data[(invy*tex.m_Width + invx) * 4 + 1];
|
|
rotated[(y*tex.m_Width + x) * 4 + 2] = data[(invy*tex.m_Width + invx) * 4 + 2];
|
|
rotated[(y*tex.m_Width + x) * 4 + 3] = data[(invy*tex.m_Width + invx) * 4 + 3];
|
|
}
|
|
}
|
|
|
|
glTexImage2D(types[i], 0, GL_RGBA, tex.m_Width, tex.m_Height, 0, GL_RGBA, GL_UNSIGNED_BYTE, &rotated[0]);
|
|
}
|
|
else
|
|
{
|
|
glTexImage2D(types[i], 0, GL_RGBA, tex.m_Width, tex.m_Height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
|
|
}
|
|
}
|
|
|
|
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
|
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
|
#if CONFIG2_GLES
|
|
#warning TODO: fix SkyManager::LoadSkyTextures for GLES
|
|
#else
|
|
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
|
|
#endif
|
|
glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
|
|
///////////////////////////////////////////////////////////////////////////
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////
|
|
// Switch to a different sky set (while the game is running)
|
|
void SkyManager::SetSkySet(const CStrW& newSet)
|
|
{
|
|
if (newSet == m_SkySet)
|
|
return;
|
|
|
|
if (m_SkyCubeMap)
|
|
{
|
|
glDeleteTextures(1, &m_SkyCubeMap);
|
|
m_SkyCubeMap = 0;
|
|
}
|
|
|
|
m_SkySet = newSet;
|
|
|
|
LoadSkyTextures();
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////
|
|
// Generate list of available skies
|
|
std::vector<CStrW> SkyManager::GetSkySets() const
|
|
{
|
|
std::vector<CStrW> skies;
|
|
|
|
// Find all subdirectories in art/textures/skies
|
|
|
|
const VfsPath path(L"art/textures/skies/");
|
|
DirectoryNames subdirectories;
|
|
if (g_VFS->GetDirectoryEntries(path, 0, &subdirectories) != INFO::OK)
|
|
{
|
|
LOGERROR("Error opening directory '%s'", path.string8());
|
|
return std::vector<CStrW>(1, GetSkySet()); // just return what we currently have
|
|
}
|
|
|
|
for(size_t i = 0; i < subdirectories.size(); i++)
|
|
skies.push_back(subdirectories[i].string());
|
|
sort(skies.begin(), skies.end());
|
|
|
|
return skies;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////
|
|
// Render sky
|
|
void SkyManager::RenderSky()
|
|
{
|
|
#if CONFIG2_GLES
|
|
#warning TODO: implement SkyManager::RenderSky for GLES
|
|
#else
|
|
|
|
// Draw the sky as a small box around the map, with depth write enabled.
|
|
// This will be done before anything else is drawn so we'll be overlapped by
|
|
// everything else.
|
|
|
|
// Do nothing unless SetSkySet was called
|
|
if (m_SkySet.empty())
|
|
return;
|
|
|
|
glDepthMask(GL_FALSE);
|
|
|
|
const CCamera& camera = g_Renderer.GetViewCamera();
|
|
|
|
if (g_RenderingOptions.GetRenderPath() == RenderPath::SHADER)
|
|
{
|
|
CShaderTechniquePtr skytech =
|
|
g_Renderer.GetShaderManager().LoadEffect(str_sky_simple);
|
|
skytech->BeginPass();
|
|
CShaderProgramPtr shader = skytech->GetShader();
|
|
shader->BindTexture(str_baseTex, m_SkyCubeMap);
|
|
|
|
// Translate so the sky center is at the camera space origin.
|
|
CMatrix3D translate;
|
|
translate.SetTranslation(camera.GetOrientation().GetTranslation());
|
|
|
|
// Currently we have a hardcoded near plane in the projection matrix.
|
|
CMatrix3D scale;
|
|
scale.SetScaling(10.0f, 10.0f, 10.0f);
|
|
|
|
// Rotate so that the "left" face, which contains the brightest part of
|
|
// each skymap, is in the direction of the sun from our light
|
|
// environment.
|
|
CMatrix3D rotate;
|
|
rotate.SetYRotation(M_PI + g_Renderer.GetLightEnv().GetRotation());
|
|
|
|
shader->Uniform(
|
|
str_transform,
|
|
camera.GetViewProjection() * translate * rotate * scale);
|
|
|
|
std::vector<GLfloat> vertexData;
|
|
// 6 sides of cube with 4 vertices with 6 floats (3 uv and 3 position).
|
|
vertexData.reserve(6 * 4 * 6);
|
|
#define ADD_VERTEX(U, V, W, X, Y, Z) \
|
|
STMT( \
|
|
vertexData.push_back(X); \
|
|
vertexData.push_back(Y); \
|
|
vertexData.push_back(Z); \
|
|
vertexData.push_back(U); \
|
|
vertexData.push_back(V); \
|
|
vertexData.push_back(W);)
|
|
|
|
// GL_TEXTURE_CUBE_MAP_NEGATIVE_X
|
|
ADD_VERTEX(+1, +1, +1, -1.0f, -1.0f, -1.0f);
|
|
ADD_VERTEX(+1, +1, -1, -1.0f, -1.0f, +1.0f);
|
|
ADD_VERTEX(+1, -1, -1, -1.0f, +1.0f, +1.0f);
|
|
ADD_VERTEX(+1, -1, +1, -1.0f, +1.0f, -1.0f);
|
|
|
|
// GL_TEXTURE_CUBE_MAP_POSITIVE_X
|
|
ADD_VERTEX(-1, +1, -1, +1.0f, -1.0f, +1.0f);
|
|
ADD_VERTEX(-1, +1, +1, +1.0f, -1.0f, -1.0f);
|
|
ADD_VERTEX(-1, -1, +1, +1.0f, +1.0f, -1.0f);
|
|
ADD_VERTEX(-1, -1, -1, +1.0f, +1.0f, +1.0f);
|
|
|
|
// GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
|
|
ADD_VERTEX(-1, +1, +1, +1.0f, -1.0f, -1.0f);
|
|
ADD_VERTEX(-1, +1, -1, +1.0f, -1.0f, +1.0f);
|
|
ADD_VERTEX(+1, +1, -1, -1.0f, -1.0f, +1.0f);
|
|
ADD_VERTEX(+1, +1, +1, -1.0f, -1.0f, -1.0f);
|
|
|
|
// GL_TEXTURE_CUBE_MAP_POSITIVE_Y
|
|
ADD_VERTEX(+1, -1, +1, -1.0f, +1.0f, -1.0f);
|
|
ADD_VERTEX(+1, -1, -1, -1.0f, +1.0f, +1.0f);
|
|
ADD_VERTEX(-1, -1, -1, +1.0f, +1.0f, +1.0f);
|
|
ADD_VERTEX(-1, -1, +1, +1.0f, +1.0f, -1.0f);
|
|
|
|
// GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
|
|
ADD_VERTEX(-1, +1, +1, +1.0f, -1.0f, -1.0f);
|
|
ADD_VERTEX(+1, +1, +1, -1.0f, -1.0f, -1.0f);
|
|
ADD_VERTEX(+1, -1, +1, -1.0f, +1.0f, -1.0f);
|
|
ADD_VERTEX(-1, -1, +1, +1.0f, +1.0f, -1.0f);
|
|
|
|
// GL_TEXTURE_CUBE_MAP_POSITIVE_Z
|
|
ADD_VERTEX(+1, +1, -1, -1.0f, -1.0f, +1.0f);
|
|
ADD_VERTEX(-1, +1, -1, +1.0f, -1.0f, +1.0f);
|
|
ADD_VERTEX(-1, -1, -1, +1.0f, +1.0f, +1.0f);
|
|
ADD_VERTEX(+1, -1, -1, -1.0f, +1.0f, +1.0f);
|
|
#undef ADD_VERTEX
|
|
|
|
shader->VertexPointer(3, GL_FLOAT, sizeof(GLfloat) * 6, &vertexData[0]);
|
|
shader->TexCoordPointer(
|
|
GL_TEXTURE0, 3, GL_FLOAT, sizeof(GLfloat) * 6, &vertexData[3]);
|
|
shader->AssertPointersBound();
|
|
|
|
glDrawArrays(GL_QUADS, 0, 6 * 4);
|
|
|
|
skytech->EndPass();
|
|
}
|
|
else
|
|
{
|
|
pglActiveTextureARB(GL_TEXTURE0_ARB);
|
|
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
|
|
|
glMatrixMode(GL_MODELVIEW);
|
|
// Modify current matrix that already contains view part.
|
|
glPushMatrix();
|
|
|
|
// Translate so the sky center is at the camera space origin.
|
|
CVector3D cameraPos = camera.GetOrientation().GetTranslation();
|
|
glTranslatef(cameraPos.X, cameraPos.Y, cameraPos.Z);
|
|
|
|
// Rotate so that the "left" face, which contains the brightest part of
|
|
// each skymap, is in the direction of the sun from our light
|
|
// environment.
|
|
glRotatef(
|
|
180.0f + RADTODEG(g_Renderer.GetLightEnv().GetRotation()),
|
|
0.0f, 1.0f, 0.0f);
|
|
|
|
// Currently we have a hardcoded near plane in the projection matrix.
|
|
glScalef(10.0f, 10.0f, 10.0f);
|
|
|
|
glDisable(GL_TEXTURE_2D);
|
|
glEnable(GL_TEXTURE_CUBE_MAP);
|
|
glBindTexture(GL_TEXTURE_CUBE_MAP, m_SkyCubeMap);
|
|
|
|
glBegin(GL_QUADS);
|
|
|
|
// GL_TEXTURE_CUBE_MAP_NEGATIVE_X
|
|
glTexCoord3f(+1, +1, +1); glVertex3f(-1.0f, -1.0f, -1.0f);
|
|
glTexCoord3f(+1, +1, -1); glVertex3f(-1.0f, -1.0f, +1.0f);
|
|
glTexCoord3f(+1, -1, -1); glVertex3f(-1.0f, +1.0f, +1.0f);
|
|
glTexCoord3f(+1, -1, +1); glVertex3f(-1.0f, +1.0f, -1.0f);
|
|
|
|
// GL_TEXTURE_CUBE_MAP_POSITIVE_X
|
|
glTexCoord3f(-1, +1, -1); glVertex3f(+1.0f, -1.0f, +1.0f);
|
|
glTexCoord3f(-1, +1, +1); glVertex3f(+1.0f, -1.0f, -1.0f);
|
|
glTexCoord3f(-1, -1, +1); glVertex3f(+1.0f, +1.0f, -1.0f);
|
|
glTexCoord3f(-1, -1, -1); glVertex3f(+1.0f, +1.0f, +1.0f);
|
|
|
|
// GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
|
|
glTexCoord3f(-1, +1, +1); glVertex3f(+1.0f, -1.0f, -1.0f);
|
|
glTexCoord3f(-1, +1, -1); glVertex3f(+1.0f, -1.0f, +1.0f);
|
|
glTexCoord3f(+1, +1, -1); glVertex3f(-1.0f, -1.0f, +1.0f);
|
|
glTexCoord3f(+1, +1, +1); glVertex3f(-1.0f, -1.0f, -1.0f);
|
|
|
|
// GL_TEXTURE_CUBE_MAP_POSITIVE_Y
|
|
glTexCoord3f(+1, -1, +1); glVertex3f(-1.0f, +1.0f, -1.0f);
|
|
glTexCoord3f(+1, -1, -1); glVertex3f(-1.0f, +1.0f, +1.0f);
|
|
glTexCoord3f(-1, -1, -1); glVertex3f(+1.0f, +1.0f, +1.0f);
|
|
glTexCoord3f(-1, -1, +1); glVertex3f(+1.0f, +1.0f, -1.0f);
|
|
|
|
// GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
|
|
glTexCoord3f(-1, +1, +1); glVertex3f(+1.0f, -1.0f, -1.0f);
|
|
glTexCoord3f(+1, +1, +1); glVertex3f(-1.0f, -1.0f, -1.0f);
|
|
glTexCoord3f(+1, -1, +1); glVertex3f(-1.0f, +1.0f, -1.0f);
|
|
glTexCoord3f(-1, -1, +1); glVertex3f(+1.0f, +1.0f, -1.0f);
|
|
|
|
// GL_TEXTURE_CUBE_MAP_POSITIVE_Z
|
|
glTexCoord3f(+1, +1, -1); glVertex3f(-1.0f, -1.0f, +1.0f);
|
|
glTexCoord3f(-1, +1, -1); glVertex3f(+1.0f, -1.0f, +1.0f);
|
|
glTexCoord3f(-1, -1, -1); glVertex3f(+1.0f, +1.0f, +1.0f);
|
|
glTexCoord3f(+1, -1, -1); glVertex3f(-1.0f, +1.0f, +1.0f);
|
|
|
|
glEnd();
|
|
|
|
glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
|
|
glDisable(GL_TEXTURE_CUBE_MAP);
|
|
glEnable(GL_TEXTURE_2D);
|
|
|
|
glPopMatrix();
|
|
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
|
|
}
|
|
|
|
glDepthMask(GL_TRUE);
|
|
|
|
#endif
|
|
}
|