mirror of
https://github.com/ZDoom/raze-gles.git
synced 2024-11-07 13:31:27 +00:00
95f917a408
All games combined there's 11(!!!) scene render blocks, not counting the sub-blocks for ROR and mirrors. Does it surprise anyone that most of these sub-blocks do not feature all engine capabilities?
471 lines
13 KiB
C++
471 lines
13 KiB
C++
/*
|
|
** gl_framebuffer.cpp
|
|
** Implementation of the non-hardware specific parts of the
|
|
** OpenGL frame buffer
|
|
**
|
|
**---------------------------------------------------------------------------
|
|
** Copyright 2010-2020 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.
|
|
**
|
|
** 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_load/gl_system.h"
|
|
#include "v_video.h"
|
|
#include "m_png.h"
|
|
#include "printf.h"
|
|
#include "templates.h"
|
|
#include "glbackend/glbackend.h"
|
|
|
|
#include "gl_load/gl_interface.h"
|
|
#include "gl/system/gl_framebuffer.h"
|
|
#include "gl/renderer/gl_renderer.h"
|
|
#include "gl/renderer/gl_renderbuffers.h"
|
|
#include "hwrenderer/data/flatvertices.h"
|
|
/*
|
|
#include "gl/textures/gl_samplers.h"
|
|
#include "hwrenderer/utility/hw_clock.h"
|
|
#include "hwrenderer/utility/hw_vrmodes.h"
|
|
#include "hwrenderer/models/hw_models.h"
|
|
#include "hwrenderer/scene/hw_skydome.h"
|
|
#include "hwrenderer/data/hw_viewpointbuffer.h"
|
|
#include "hwrenderer/dynlights/hw_lightbuffer.h"
|
|
#include "gl/shaders/gl_shaderprogram.h"
|
|
*/
|
|
#include "gl_debug.h"
|
|
#include "r_videoscale.h"
|
|
//#include "gl_buffers.h"
|
|
|
|
//#include "hwrenderer/data/flatvertices.h"
|
|
|
|
EXTERN_CVAR (Bool, vid_vsync)
|
|
EXTERN_CVAR(Bool, r_drawvoxels)
|
|
EXTERN_CVAR(Int, gl_tonemap)
|
|
EXTERN_CVAR(Bool, gl_texture_usehires)
|
|
EXTERN_CVAR(Int, gl_ssao)
|
|
|
|
void gl_LoadExtensions();
|
|
void gl_PrintStartupLog();
|
|
//void Draw2D(F2DDrawer *drawer, FRenderState &state);
|
|
|
|
extern bool vid_hdr_active;
|
|
|
|
void DrawFullscreenBlends();
|
|
|
|
namespace OpenGLRenderer
|
|
{
|
|
FGLRenderer *GLRenderer;
|
|
|
|
//==========================================================================
|
|
//
|
|
//
|
|
//
|
|
//==========================================================================
|
|
|
|
OpenGLFrameBuffer::OpenGLFrameBuffer(void *hMonitor, bool fullscreen) :
|
|
Super(hMonitor, fullscreen)
|
|
{
|
|
// SetVSync needs to be at the very top to workaround a bug in Nvidia's OpenGL driver.
|
|
// If wglSwapIntervalEXT is called after glBindFramebuffer in a frame the setting is not changed!
|
|
Super::SetVSync(vid_vsync);
|
|
|
|
#ifdef IMPLEMENT_IT
|
|
// Make sure all global variables tracking OpenGL context state are reset..
|
|
FHardwareTexture::InitGlobalState();
|
|
gl_RenderState.Reset();
|
|
#endif
|
|
|
|
GLRenderer = nullptr;
|
|
}
|
|
|
|
OpenGLFrameBuffer::~OpenGLFrameBuffer()
|
|
{
|
|
PPResource::ResetAll();
|
|
|
|
if (mVertexData != nullptr) delete mVertexData;
|
|
#ifdef IMPLEMENT_IT
|
|
if (mSkyData != nullptr) delete mSkyData;
|
|
if (mViewpoints != nullptr) delete mViewpoints;
|
|
if (mLights != nullptr) delete mLights;
|
|
mShadowMap.Reset();
|
|
#endif
|
|
|
|
if (GLRenderer)
|
|
{
|
|
delete GLRenderer;
|
|
GLRenderer = nullptr;
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// Initializes the GL renderer
|
|
//
|
|
//==========================================================================
|
|
|
|
void OpenGLFrameBuffer::InitializeState()
|
|
{
|
|
static bool first=true;
|
|
|
|
if (first)
|
|
{
|
|
if (ogl_LoadFunctions() == ogl_LOAD_FAILED)
|
|
{
|
|
I_FatalError("Failed to load OpenGL functions.");
|
|
}
|
|
}
|
|
|
|
gl_LoadExtensions();
|
|
|
|
// Move some state to the framebuffer object for easier access.
|
|
hwcaps = gl.flags;
|
|
glslversion = gl.glslversion;
|
|
uniformblockalignment = gl.uniformblockalignment;
|
|
maxuniformblock = gl.maxuniformblock;
|
|
vendorstring = gl.vendorstring;
|
|
|
|
if (first)
|
|
{
|
|
first=false;
|
|
gl_PrintStartupLog();
|
|
}
|
|
|
|
glDepthFunc(GL_LESS);
|
|
|
|
glEnable(GL_DITHER);
|
|
glDisable(GL_CULL_FACE);
|
|
glDisable(GL_POLYGON_OFFSET_FILL);
|
|
glEnable(GL_POLYGON_OFFSET_LINE);
|
|
glEnable(GL_BLEND);
|
|
glEnable(GL_DEPTH_CLAMP);
|
|
glDisable(GL_DEPTH_TEST);
|
|
glDisable(GL_LINE_SMOOTH);
|
|
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
|
|
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
|
|
glClearDepth(1.0f);
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
|
|
SetViewportRects(nullptr);
|
|
|
|
mVertexData = new FFlatVertexBuffer(GetWidth(), GetHeight());
|
|
#ifdef IMPLEMENT_IT
|
|
mSkyData = new FSkyVertexBuffer;
|
|
mViewpoints = new HWViewpointBuffer;
|
|
mLights = new FLightBuffer();
|
|
#endif
|
|
GLRenderer = new FGLRenderer(this);
|
|
GLRenderer->Initialize(GetWidth(), GetHeight());
|
|
#ifdef IMPLEMENT_IT
|
|
static_cast<GLDataBuffer*>(mLights->GetBuffer())->BindBase();
|
|
#endif
|
|
|
|
mDebug = std::make_shared<FGLDebug>();
|
|
mDebug->Update();
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// Updates the screen
|
|
//
|
|
//==========================================================================
|
|
|
|
void OpenGLFrameBuffer::Update()
|
|
{
|
|
#if 0
|
|
twoD.Reset();
|
|
Flush3D.Reset();
|
|
|
|
Flush3D.Clock();
|
|
#endif
|
|
GLRenderer->Flush();
|
|
// Flush3D.Unclock();
|
|
|
|
Swap();
|
|
Super::Update();
|
|
}
|
|
|
|
|
|
const char* OpenGLFrameBuffer::DeviceName() const
|
|
{
|
|
return gl.modelstring;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// Swap the buffers
|
|
//
|
|
//==========================================================================
|
|
|
|
CVAR(Bool, gl_finishbeforeswap, false, CVAR_ARCHIVE|CVAR_GLOBALCONFIG);
|
|
|
|
void OpenGLFrameBuffer::Swap()
|
|
{
|
|
bool swapbefore = gl_finishbeforeswap && camtexcount == 0;
|
|
//Finish.Reset();
|
|
//Finish.Clock();
|
|
if (swapbefore) glFinish();
|
|
FPSLimit();
|
|
SwapBuffers();
|
|
if (!swapbefore) glFinish();
|
|
//Finish.Unclock();
|
|
camtexcount = 0;
|
|
//FHardwareTexture::UnbindAll();
|
|
mDebug->Update();
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// Enable/disable vertical sync
|
|
//
|
|
//==========================================================================
|
|
|
|
void OpenGLFrameBuffer::SetVSync(bool vsync)
|
|
{
|
|
// Switch to the default frame buffer because some drivers associate the vsync state with the bound FB object.
|
|
GLint oldDrawFramebufferBinding = 0, oldReadFramebufferBinding = 0;
|
|
glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &oldDrawFramebufferBinding);
|
|
glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &oldReadFramebufferBinding);
|
|
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
|
|
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
|
|
|
|
Super::SetVSync(vsync);
|
|
|
|
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, oldDrawFramebufferBinding);
|
|
glBindFramebuffer(GL_READ_FRAMEBUFFER, oldReadFramebufferBinding);
|
|
}
|
|
|
|
//===========================================================================
|
|
//
|
|
//
|
|
//===========================================================================
|
|
|
|
void OpenGLFrameBuffer::CleanForRestart()
|
|
{
|
|
}
|
|
|
|
#ifdef IMPLEMENT_IT
|
|
void OpenGLFrameBuffer::SetTextureFilterMode()
|
|
{
|
|
//if (GLRenderer != nullptr && GLRenderer->mSamplerManager != nullptr) GLRenderer->mSamplerManager->SetTextureFilterMode();
|
|
}
|
|
|
|
IHardwareTexture *OpenGLFrameBuffer::CreateHardwareTexture()
|
|
{
|
|
return nullptr;// new FHardwareTexture(true/*tex->bNoCompress*/);
|
|
}
|
|
|
|
void OpenGLFrameBuffer::PrecacheMaterial(FMaterial *mat, int translation)
|
|
{
|
|
auto tex = mat->tex;
|
|
if (tex->isSWCanvas()) return;
|
|
|
|
// Textures that are already scaled in the texture lump will not get replaced by hires textures.
|
|
int flags = mat->isExpanded() ? CTF_Expand : (gl_texture_usehires && !tex->isScaled()) ? CTF_CheckHires : 0;
|
|
int numLayers = mat->GetLayers();
|
|
auto base = static_cast<FHardwareTexture*>(mat->GetLayer(0, translation));
|
|
|
|
if (base->BindOrCreate(tex, 0, CLAMP_NONE, translation, flags))
|
|
{
|
|
for (int i = 1; i < numLayers; i++)
|
|
{
|
|
FTexture *layer;
|
|
auto systex = static_cast<FHardwareTexture*>(mat->GetLayer(i, 0, &layer));
|
|
systex->BindOrCreate(layer, i, CLAMP_NONE, 0, mat->isExpanded() ? CTF_Expand : 0);
|
|
}
|
|
}
|
|
// unbind everything.
|
|
FHardwareTexture::UnbindAll();
|
|
}
|
|
|
|
FModelRenderer *OpenGLFrameBuffer::CreateModelRenderer(int mli)
|
|
{
|
|
return new FHWModelRenderer(nullptr, gl_RenderState, mli);
|
|
}
|
|
#endif
|
|
|
|
IVertexBuffer *OpenGLFrameBuffer::CreateVertexBuffer()
|
|
{
|
|
return new GLVertexBuffer;
|
|
}
|
|
|
|
IIndexBuffer *OpenGLFrameBuffer::CreateIndexBuffer()
|
|
{
|
|
return new GLIndexBuffer;
|
|
}
|
|
|
|
IDataBuffer *OpenGLFrameBuffer::CreateDataBuffer(int bindingpoint, bool ssbo, bool needsresize)
|
|
{
|
|
return new GLDataBuffer(bindingpoint, ssbo);
|
|
}
|
|
|
|
#ifdef IMPLEMENT_IT
|
|
void OpenGLFrameBuffer::TextureFilterChanged()
|
|
{
|
|
if (GLRenderer != NULL && GLRenderer->mSamplerManager != NULL) GLRenderer->mSamplerManager->SetTextureFilterMode();
|
|
}
|
|
#endif
|
|
|
|
void OpenGLFrameBuffer::BlurScene(float amount)
|
|
{
|
|
GLRenderer->BlurScene(amount);
|
|
}
|
|
|
|
#if 0
|
|
void OpenGLFrameBuffer::UpdatePalette()
|
|
{
|
|
if (GLRenderer)
|
|
GLRenderer->ClearTonemapPalette();
|
|
}
|
|
#endif
|
|
|
|
//===========================================================================
|
|
//
|
|
//
|
|
//
|
|
//===========================================================================
|
|
|
|
void OpenGLFrameBuffer::BeginFrame()
|
|
{
|
|
SetViewportRects(nullptr);
|
|
if (GLRenderer != nullptr)
|
|
GLRenderer->BeginFrame();
|
|
}
|
|
|
|
//===========================================================================
|
|
//
|
|
// Takes a screenshot
|
|
//
|
|
//===========================================================================
|
|
|
|
TArray<uint8_t> OpenGLFrameBuffer::GetScreenshotBuffer(int &pitch, ESSType &color_type, float &gamma)
|
|
{
|
|
const auto &viewport = mOutputLetterbox;
|
|
|
|
// Grab what is in the back buffer.
|
|
// We cannot rely on SCREENWIDTH/HEIGHT here because the output may have been scaled.
|
|
TArray<uint8_t> pixels;
|
|
pixels.Resize(viewport.width * viewport.height * 3);
|
|
glPixelStorei(GL_PACK_ALIGNMENT, 1);
|
|
glReadPixels(viewport.left, viewport.top, viewport.width, viewport.height, GL_RGB, GL_UNSIGNED_BYTE, &pixels[0]);
|
|
glPixelStorei(GL_PACK_ALIGNMENT, 4);
|
|
|
|
// Copy to screenshot buffer:
|
|
int w = SCREENWIDTH;
|
|
int h = SCREENHEIGHT;
|
|
|
|
TArray<uint8_t> ScreenshotBuffer(w * h * 3, true);
|
|
|
|
float rcpWidth = 1.0f / w;
|
|
float rcpHeight = 1.0f / h;
|
|
for (int y = 0; y < h; y++)
|
|
{
|
|
for (int x = 0; x < w; x++)
|
|
{
|
|
float u = (x + 0.5f) * rcpWidth;
|
|
float v = (y + 0.5f) * rcpHeight;
|
|
int sx = u * viewport.width;
|
|
int sy = v * viewport.height;
|
|
int sindex = (sx + sy * viewport.width) * 3;
|
|
int dindex = (x + (h - y - 1) * w) * 3;
|
|
ScreenshotBuffer[dindex] = pixels[sindex];
|
|
ScreenshotBuffer[dindex + 1] = pixels[sindex + 1];
|
|
ScreenshotBuffer[dindex + 2] = pixels[sindex + 2];
|
|
}
|
|
}
|
|
|
|
pitch = w * 3;
|
|
color_type = SS_RGB;
|
|
|
|
// Screenshot should not use gamma correction if it was already applied to rendered image
|
|
gamma = 1;
|
|
return ScreenshotBuffer;
|
|
}
|
|
|
|
//===========================================================================
|
|
//
|
|
// 2D drawing
|
|
//
|
|
//===========================================================================
|
|
|
|
void OpenGLFrameBuffer::Draw2D()
|
|
{
|
|
if (GLRenderer != nullptr)
|
|
{
|
|
GLRenderer->mBuffers->BindCurrentFB();
|
|
::DrawFullscreenBlends();
|
|
DrawRateStuff();
|
|
GLInterface.Draw2D(&twodgen);
|
|
}
|
|
}
|
|
|
|
void OpenGLFrameBuffer::PostProcessScene(int fixedcm, const std::function<void()> &afterBloomDrawEndScene2D)
|
|
{
|
|
GLRenderer->PostProcessScene(fixedcm, afterBloomDrawEndScene2D);
|
|
}
|
|
|
|
|
|
}
|
|
|
|
void videoShowFrame(int32_t w)
|
|
{
|
|
static GLenum buffers[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2 };
|
|
|
|
if (gl_ssao)
|
|
{
|
|
glDrawBuffers(1, buffers);
|
|
OpenGLRenderer::GLRenderer->AmbientOccludeScene(GLInterface.GetProjectionM5());
|
|
glViewport(screen->mSceneViewport.left, screen->mSceneViewport.top, screen->mSceneViewport.width, screen->mSceneViewport.height);
|
|
OpenGLRenderer::GLRenderer->mBuffers->BindSceneFB(true);
|
|
glDrawBuffers(3, buffers);
|
|
|
|
// To do: the translucent part of the scene should be drawn here
|
|
|
|
glDrawBuffers(1, buffers);
|
|
}
|
|
|
|
OpenGLRenderer::GLRenderer->mBuffers->BlitSceneToTexture(); // Copy the resulting scene to the current post process texture
|
|
screen->PostProcessScene(0, []() {
|
|
GLInterface.Draw2D(&twodpsp); // draws the weapon sprites
|
|
});
|
|
screen->Update();
|
|
// After finishing the frame, reset everything for the next frame. This needs to be done better.
|
|
screen->BeginFrame();
|
|
if (gl_ssao)
|
|
{
|
|
OpenGLRenderer::GLRenderer->mBuffers->BindSceneFB(true);
|
|
glDrawBuffers(3, buffers);
|
|
}
|
|
else
|
|
{
|
|
OpenGLRenderer::GLRenderer->mBuffers->BindSceneFB(false);
|
|
}
|
|
twodpsp.Clear();
|
|
twodgen.Clear();
|
|
GLInterface.ResetFrame();
|
|
}
|
|
|