gzdoom-gles/src/gl/renderer/gl_renderer.cpp

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/*
** gl1_renderer.cpp
** Renderer interface
**
**---------------------------------------------------------------------------
** Copyright 2008 Christoph Oelckers
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
** 4. When not used as part of GZDoom or a GZDoom derivative, this code will be
** covered by the terms of the GNU Lesser General Public License as published
** by the Free Software Foundation; either version 2.1 of the License, or (at
** your option) any later version.
** 5. Full disclosure of the entire project's source code, except for third
** party libraries is mandatory. (NOTE: This clause is non-negotiable!)
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#include "gl/system/gl_system.h"
#include "files.h"
#include "m_swap.h"
#include "v_video.h"
#include "r_data/r_translate.h"
#include "m_png.h"
#include "m_crc32.h"
#include "w_wad.h"
//#include "gl/gl_intern.h"
#include "gl/gl_functions.h"
#include "vectors.h"
#include "gl/system/gl_interface.h"
#include "gl/system/gl_framebuffer.h"
#include "gl/system/gl_threads.h"
#include "gl/system/gl_cvars.h"
#include "gl/renderer/gl_renderer.h"
#include "gl/renderer/gl_lightdata.h"
#include "gl/renderer/gl_renderstate.h"
#include "gl/data/gl_data.h"
#include "gl/data/gl_vertexbuffer.h"
#include "gl/scene/gl_drawinfo.h"
#include "gl/shaders/gl_shader.h"
#include "gl/textures/gl_texture.h"
#include "gl/textures/gl_translate.h"
#include "gl/textures/gl_material.h"
#include "gl/utility/gl_clock.h"
#include "gl/utility/gl_templates.h"
#include "gl/models/gl_models.h"
#include "gl/dynlights/gl_lightbuffer.h"
//===========================================================================
//
// Renderer interface
//
//===========================================================================
EXTERN_CVAR(Bool, gl_render_segs)
//-----------------------------------------------------------------------------
//
// Initialize
//
//-----------------------------------------------------------------------------
FGLRenderer::FGLRenderer(OpenGLFrameBuffer *fb)
{
framebuffer = fb;
mCurrentPortal = NULL;
mMirrorCount = 0;
mPlaneMirrorCount = 0;
mLightCount = 0;
mAngles = FRotator(0,0,0);
mViewVector = FVector2(0,0);
mCameraPos = FVector3(0,0,0);
mVBO = NULL;
mSkyVBO = NULL;
gl_spriteindex = 0;
mShaderManager = NULL;
glpart2 = glpart = mirrortexture = NULL;
mLights = NULL;
}
void FGLRenderer::Initialize()
{
glpart2 = FTexture::CreateTexture(Wads.GetNumForFullName("glstuff/glpart2.png"), FTexture::TEX_MiscPatch);
glpart = FTexture::CreateTexture(Wads.GetNumForFullName("glstuff/glpart.png"), FTexture::TEX_MiscPatch);
mirrortexture = FTexture::CreateTexture(Wads.GetNumForFullName("glstuff/mirror.png"), FTexture::TEX_MiscPatch);
mVBO = new FFlatVertexBuffer;
mSkyVBO = new FSkyVertexBuffer;
mModelVBO = new FModelVertexBuffer;
mLights = new FLightBuffer;
gl_RenderState.SetVertexBuffer(mVBO);
mFBID = 0;
SetupLevel();
mShaderManager = new FShaderManager;
//mThreadManager = new FGLThreadManager;
}
FGLRenderer::~FGLRenderer()
{
gl_DeleteAllAttachedLights();
FMaterial::FlushAll();
//if (mThreadManager != NULL) delete mThreadManager;
if (mShaderManager != NULL) delete mShaderManager;
if (mVBO != NULL) delete mVBO;
if (mModelVBO) delete mModelVBO;
if (mSkyVBO != NULL) delete mSkyVBO;
if (mLights != NULL) delete mLights;
if (glpart2) delete glpart2;
if (glpart) delete glpart;
if (mirrortexture) delete mirrortexture;
if (mFBID != 0) glDeleteFramebuffers(1, &mFBID);
}
//===========================================================================
//
//
//
//===========================================================================
void FGLRenderer::SetupLevel()
{
mVBO->CreateVBO();
}
void FGLRenderer::Begin2D()
{
gl_RenderState.EnableFog(false);
gl_RenderState.Set2DMode(true);
}
//===========================================================================
//
//
//
//===========================================================================
void FGLRenderer::ProcessLowerMiniseg(seg_t *seg, sector_t * frontsector, sector_t * backsector)
{
GLWall wall;
wall.ProcessLowerMiniseg(seg, frontsector, backsector);
rendered_lines++;
}
//===========================================================================
//
//
//
//===========================================================================
void FGLRenderer::ProcessSprite(AActor *thing, sector_t *sector)
{
GLSprite glsprite;
glsprite.Process(thing, sector);
}
//===========================================================================
//
//
//
//===========================================================================
void FGLRenderer::ProcessParticle(particle_t *part, sector_t *sector)
{
GLSprite glsprite;
glsprite.ProcessParticle(part, sector);//, 0, 0);
}
//===========================================================================
//
//
//
//===========================================================================
void FGLRenderer::ProcessSector(sector_t *fakesector)
{
GLFlat glflat;
glflat.ProcessSector(fakesector);
}
//===========================================================================
//
//
//
//===========================================================================
void FGLRenderer::FlushTextures()
{
FMaterial::FlushAll();
}
//===========================================================================
//
//
//
//===========================================================================
bool FGLRenderer::StartOffscreen()
{
if (mFBID == 0) glGenFramebuffers(1, &mFBID);
glBindFramebuffer(GL_FRAMEBUFFER, mFBID);
return true;
}
//===========================================================================
//
//
//
//===========================================================================
void FGLRenderer::EndOffscreen()
{
glBindFramebuffer(GL_FRAMEBUFFER, 0);
}
//===========================================================================
//
//
//
//===========================================================================
unsigned char *FGLRenderer::GetTextureBuffer(FTexture *tex, int &w, int &h)
{
FMaterial * gltex = FMaterial::ValidateTexture(tex);
if (gltex)
{
return gltex->CreateTexBuffer(0, w, h);
}
return NULL;
}
//===========================================================================
//
//
//
//===========================================================================
void FGLRenderer::ClearBorders()
{
OpenGLFrameBuffer *glscreen = static_cast<OpenGLFrameBuffer*>(screen);
// Letterbox time! Draw black top and bottom borders.
int width = glscreen->GetWidth();
int height = glscreen->GetHeight();
int trueHeight = glscreen->GetTrueHeight();
int borderHeight = (trueHeight - height) / 2;
glViewport(0, 0, width, trueHeight);
gl_RenderState.mProjectionMatrix.loadIdentity();
gl_RenderState.mProjectionMatrix.ortho(0.0f, width * 1.0f, 0.0f, trueHeight, -1.0f, 1.0f);
gl_RenderState.SetColor(0.f ,0.f ,0.f ,1.f);
gl_RenderState.Set2DMode(true);
gl_RenderState.EnableTexture(false);
gl_RenderState.Apply();
gl_RenderState.ApplyMatrices();
FFlatVertex *ptr = GLRenderer->mVBO->GetBuffer();
ptr->Set(0, borderHeight, 0, 0, 0); ptr++;
ptr->Set(0, 0, 0, 0, 0); ptr++;
ptr->Set(width, 0, 0, 0, 0); ptr++;
ptr->Set(width, borderHeight, 0, 0, 0); ptr++;
GLRenderer->mVBO->RenderCurrent(ptr, GL_TRIANGLE_STRIP);
ptr->Set(0, trueHeight, 0, 0, 0); ptr++;
ptr->Set(0, trueHeight - borderHeight, 0, 0, 0); ptr++;
ptr->Set(width, trueHeight - borderHeight, 0, 0, 0); ptr++;
ptr->Set(width, trueHeight, 0, 0, 0); ptr++;
GLRenderer->mVBO->RenderCurrent(ptr, GL_TRIANGLE_STRIP);
gl_RenderState.EnableTexture(true);
glViewport(0, (trueHeight - height) / 2, width, height);
}
//==========================================================================
//
// Draws a texture
//
//==========================================================================
void FGLRenderer::DrawTexture(FTexture *img, DCanvas::DrawParms &parms)
{
double xscale = parms.destwidth / parms.texwidth;
double yscale = parms.destheight / parms.texheight;
double x = parms.x - parms.left * xscale;
double y = parms.y - parms.top * yscale;
double w = parms.destwidth;
double h = parms.destheight;
float u1, v1, u2, v2;
int light = 255;
FMaterial * gltex = FMaterial::ValidateTexture(img);
if (parms.colorOverlay && (parms.colorOverlay & 0xffffff) == 0)
{
// Right now there's only black. Should be implemented properly later
light = 255 - APART(parms.colorOverlay);
parms.colorOverlay = 0;
}
if (!img->bHasCanvas)
{
int translation = 0;
if (!parms.alphaChannel)
{
if (parms.remap != NULL && !parms.remap->Inactive)
{
GLTranslationPalette * pal = static_cast<GLTranslationPalette*>(parms.remap->GetNative());
if (pal) translation = -pal->GetIndex();
}
}
gl_SetRenderStyle(parms.style, !parms.masked, false);
gltex->BindPatch(translation, 0, !!(parms.style.Flags & STYLEF_RedIsAlpha));
u1 = gltex->GetUL();
v1 = gltex->GetVT();
u2 = gltex->GetUR();
v2 = gltex->GetVB();
}
else
{
gltex->Bind(0, 0);
u2=1.f;
v2=-1.f;
u1 = v1 = 0.f;
gl_RenderState.SetTextureMode(TM_OPAQUE);
}
if (parms.flipX)
{
float temp = u1;
u1 = u2;
u2 = temp;
}
if (parms.windowleft > 0 || parms.windowright < parms.texwidth)
{
x += parms.windowleft * xscale;
w -= (parms.texwidth - parms.windowright + parms.windowleft) * xscale;
u1 = float(u1 + parms.windowleft / parms.texwidth);
u2 = float(u2 - (parms.texwidth - parms.windowright) / parms.texwidth);
}
PalEntry color;
if (parms.style.Flags & STYLEF_ColorIsFixed)
{
color = parms.fillcolor;
}
else
{
color = PalEntry(light, light, light);
}
color.a = Scale(parms.alpha, 255, FRACUNIT);
// scissor test doesn't use the current viewport for the coordinates, so use real screen coordinates
int btm = (SCREENHEIGHT - screen->GetHeight()) / 2;
btm = SCREENHEIGHT - btm;
glEnable(GL_SCISSOR_TEST);
int space = (static_cast<OpenGLFrameBuffer*>(screen)->GetTrueHeight()-screen->GetHeight())/2;
glScissor(parms.lclip, btm - parms.dclip + space, parms.rclip - parms.lclip, parms.dclip - parms.uclip);
gl_RenderState.SetColor(color);
gl_RenderState.AlphaFunc(GL_GEQUAL, 0.f);
gl_RenderState.Apply();
FFlatVertex *ptr = GLRenderer->mVBO->GetBuffer();
ptr->Set(x, y, 0, u1, v1); ptr++;
ptr->Set(x, y + h, 0, u1, v2); ptr++;
ptr->Set(x + w, y, 0, u2, v1); ptr++;
ptr->Set(x + w, y + h, 0, u2, v2); ptr++;
GLRenderer->mVBO->RenderCurrent(ptr, GL_TRIANGLE_STRIP);
if (parms.colorOverlay)
{
gl_RenderState.SetTextureMode(TM_MASK);
gl_RenderState.BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
gl_RenderState.BlendEquation(GL_FUNC_ADD);
gl_RenderState.SetColor(PalEntry(parms.colorOverlay));
gl_RenderState.Apply();
FFlatVertex *ptr = GLRenderer->mVBO->GetBuffer();
ptr->Set(x, y, 0, u1, v1); ptr++;
ptr->Set(x, y + h, 0, u1, v2); ptr++;
ptr->Set(x + w, y, 0, u2, v1); ptr++;
ptr->Set(x + w, y + h, 0, u2, v2); ptr++;
GLRenderer->mVBO->RenderCurrent(ptr, GL_TRIANGLE_STRIP);
}
glScissor(0, 0, screen->GetWidth(), screen->GetHeight());
glDisable(GL_SCISSOR_TEST);
gl_RenderState.SetTextureMode(TM_MODULATE);
gl_RenderState.BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
gl_RenderState.BlendEquation(GL_FUNC_ADD);
}
//==========================================================================
//
//
//
//==========================================================================
void FGLRenderer::DrawLine(int x1, int y1, int x2, int y2, int palcolor, uint32 color)
{
PalEntry p = color? (PalEntry)color : GPalette.BaseColors[palcolor];
gl_RenderState.EnableTexture(false);
gl_RenderState.SetColorAlpha(p, 1.f);
gl_RenderState.Apply();
FFlatVertex *ptr = GLRenderer->mVBO->GetBuffer();
ptr->Set(x1, y1, 0, 0, 0); ptr++;
ptr->Set(x2, y2, 0, 0, 0); ptr++;
GLRenderer->mVBO->RenderCurrent(ptr, GL_LINES);
gl_RenderState.EnableTexture(true);
}
//==========================================================================
//
//
//
//==========================================================================
void FGLRenderer::DrawPixel(int x1, int y1, int palcolor, uint32 color)
{
PalEntry p = color? (PalEntry)color : GPalette.BaseColors[palcolor];
gl_RenderState.EnableTexture(false);
gl_RenderState.SetColorAlpha(p, 1.f);
gl_RenderState.Apply();
FFlatVertex *ptr = GLRenderer->mVBO->GetBuffer();
ptr->Set(x1, y1, 0, 0, 0); ptr++;
GLRenderer->mVBO->RenderCurrent(ptr, GL_POINTS);
gl_RenderState.EnableTexture(true);
}
//===========================================================================
//
//
//
//===========================================================================
void FGLRenderer::Dim(PalEntry color, float damount, int x1, int y1, int w, int h)
{
gl_RenderState.EnableTexture(false);
gl_RenderState.BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
gl_RenderState.AlphaFunc(GL_GREATER,0);
gl_RenderState.SetColorAlpha(color, damount);
gl_RenderState.Apply();
FFlatVertex *ptr = GLRenderer->mVBO->GetBuffer();
ptr->Set(x1, y1, 0, 0, 0); ptr++;
ptr->Set(x1, y1+h, 0, 0, 0); ptr++;
ptr->Set(x1+w, y1+h, 0, 0, 0); ptr++;
ptr->Set(x1+w, y1, 0, 0, 0); ptr++;
GLRenderer->mVBO->RenderCurrent(ptr, GL_TRIANGLE_FAN);
gl_RenderState.EnableTexture(true);
}
//==========================================================================
//
//
//
//==========================================================================
void FGLRenderer::FlatFill (int left, int top, int right, int bottom, FTexture *src, bool local_origin)
{
float fU1,fU2,fV1,fV2;
FMaterial *gltexture=FMaterial::ValidateTexture(src);
if (!gltexture) return;
gltexture->Bind(0, 0);
// scaling is not used here.
if (!local_origin)
{
fU1 = float(left) / src->GetWidth();
fV1 = float(top) / src->GetHeight();
fU2 = float(right) / src->GetWidth();
fV2 = float(bottom) / src->GetHeight();
}
else
{
fU1 = 0;
fV1 = 0;
fU2 = float(right-left) / src->GetWidth();
fV2 = float(bottom-top) / src->GetHeight();
}
gl_RenderState.ResetColor();
gl_RenderState.Apply();
FFlatVertex *ptr = GLRenderer->mVBO->GetBuffer();
ptr->Set(left, top, 0, fU1, fV1); ptr++;
ptr->Set(left, bottom, 0, fU1, fV2); ptr++;
ptr->Set(right, top, 0, fU2, fV1); ptr++;
ptr->Set(right, bottom, 0, fU2, fV2); ptr++;
GLRenderer->mVBO->RenderCurrent(ptr, GL_TRIANGLE_STRIP);
}
//==========================================================================
//
//
//
//==========================================================================
void FGLRenderer::Clear(int left, int top, int right, int bottom, int palcolor, uint32 color)
{
int rt;
int offY = 0;
PalEntry p = palcolor==-1 || color != 0? (PalEntry)color : GPalette.BaseColors[palcolor];
int width = right-left;
int height= bottom-top;
rt = screen->GetHeight() - top;
int space = (static_cast<OpenGLFrameBuffer*>(screen)->GetTrueHeight()-screen->GetHeight())/2; // ugh...
rt += space;
/*
if (!m_windowed && (m_trueHeight != m_height))
{
offY = (m_trueHeight - m_height) / 2;
rt += offY;
}
*/
glEnable(GL_SCISSOR_TEST);
glScissor(left, rt - height, width, height);
glClearColor(p.r/255.0f, p.g/255.0f, p.b/255.0f, 0.f);
glClear(GL_COLOR_BUFFER_BIT);
glClearColor(0.f, 0.f, 0.f, 0.f);
glDisable(GL_SCISSOR_TEST);
}
//==========================================================================
//
// D3DFB :: FillSimplePoly
//
// Here, "simple" means that a simple triangle fan can draw it.
//
//==========================================================================
void FGLRenderer::FillSimplePoly(FTexture *texture, FVector2 *points, int npoints,
double originx, double originy, double scalex, double scaley,
angle_t rotation, FDynamicColormap *colormap, int lightlevel)
{
if (npoints < 3)
{ // This is no polygon.
return;
}
FMaterial *gltexture = FMaterial::ValidateTexture(texture);
if (gltexture == NULL)
{
return;
}
FColormap cm;
cm = colormap;
gl_SetColor(lightlevel, 0, cm, 1.f);
gltexture->Bind();
int i;
float rot = float(rotation * M_PI / float(1u << 31));
bool dorotate = rot != 0;
float cosrot = cos(rot);
float sinrot = sin(rot);
//float yoffs = GatheringWipeScreen ? 0 : LBOffset;
float uscale = float(1.f / (texture->GetScaledWidth() * scalex));
float vscale = float(1.f / (texture->GetScaledHeight() * scaley));
if (gltexture->tex->bHasCanvas)
{
vscale = 0 - vscale;
}
float ox = float(originx);
float oy = float(originy);
gl_RenderState.Apply();
FFlatVertex *ptr = GLRenderer->mVBO->GetBuffer();
for (i = 0; i < npoints; ++i)
{
float u = points[i].X - 0.5f - ox;
float v = points[i].Y - 0.5f - oy;
if (dorotate)
{
float t = u;
u = t * cosrot - v * sinrot;
v = v * cosrot + t * sinrot;
}
ptr->Set(points[i].X, points[i].Y, 0, u*uscale, v*vscale);
ptr++;
}
GLRenderer->mVBO->RenderCurrent(ptr, GL_TRIANGLE_FAN);
}