2020-05-28 23:03:01 +00:00
|
|
|
/*
|
|
|
|
** gl_hwtexture.cpp
|
|
|
|
** GL texture abstraction
|
|
|
|
**
|
|
|
|
**---------------------------------------------------------------------------
|
|
|
|
** Copyright 2019 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_system.h"
|
2021-10-30 08:51:03 +00:00
|
|
|
|
2020-05-28 23:03:01 +00:00
|
|
|
#include "c_cvars.h"
|
|
|
|
#include "hw_material.h"
|
|
|
|
|
|
|
|
#include "gl_interface.h"
|
|
|
|
#include "hw_cvars.h"
|
|
|
|
#include "gl_debug.h"
|
|
|
|
#include "gl_renderer.h"
|
2020-05-31 08:41:59 +00:00
|
|
|
#include "gl_renderstate.h"
|
2020-05-28 23:03:01 +00:00
|
|
|
#include "gl_samplers.h"
|
|
|
|
#include "gl_hwtexture.h"
|
|
|
|
|
|
|
|
namespace OpenGLRenderer
|
|
|
|
{
|
|
|
|
|
|
|
|
|
|
|
|
TexFilter_s TexFilter[] = {
|
|
|
|
{GL_NEAREST, GL_NEAREST, false},
|
|
|
|
{GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST, true},
|
|
|
|
{GL_LINEAR, GL_LINEAR, false},
|
|
|
|
{GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR, true},
|
|
|
|
{GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR, true},
|
|
|
|
{GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST, true},
|
|
|
|
{GL_LINEAR_MIPMAP_LINEAR, GL_NEAREST, true},
|
|
|
|
};
|
|
|
|
|
|
|
|
//===========================================================================
|
|
|
|
//
|
|
|
|
// Static texture data
|
|
|
|
//
|
|
|
|
//===========================================================================
|
|
|
|
unsigned int FHardwareTexture::lastbound[FHardwareTexture::MAX_TEXTURES];
|
|
|
|
|
|
|
|
//===========================================================================
|
|
|
|
//
|
|
|
|
// Loads the texture image into the hardware
|
|
|
|
//
|
|
|
|
// NOTE: For some strange reason I was unable to find the source buffer
|
|
|
|
// should be one line higher than the actual texture. I got extremely
|
|
|
|
// strange crashes deep inside the GL driver when I didn't do it!
|
|
|
|
//
|
|
|
|
//===========================================================================
|
|
|
|
|
|
|
|
unsigned int FHardwareTexture::CreateTexture(unsigned char * buffer, int w, int h, int texunit, bool mipmap, const char *name)
|
|
|
|
{
|
|
|
|
int rh,rw;
|
|
|
|
int texformat = GL_RGBA8;// TexFormat[gl_texture_format];
|
|
|
|
bool deletebuffer=false;
|
|
|
|
|
|
|
|
/*
|
|
|
|
if (forcenocompression)
|
|
|
|
{
|
|
|
|
texformat = GL_RGBA8;
|
|
|
|
}
|
|
|
|
*/
|
|
|
|
bool firstCall = glTexID == 0;
|
|
|
|
if (firstCall)
|
|
|
|
{
|
|
|
|
glGenTextures(1, &glTexID);
|
|
|
|
}
|
|
|
|
|
|
|
|
int textureBinding = UINT_MAX;
|
|
|
|
if (texunit == -1) glGetIntegerv(GL_TEXTURE_BINDING_2D, &textureBinding);
|
|
|
|
if (texunit > 0) glActiveTexture(GL_TEXTURE0+texunit);
|
|
|
|
if (texunit >= 0) lastbound[texunit] = glTexID;
|
|
|
|
glBindTexture(GL_TEXTURE_2D, glTexID);
|
|
|
|
|
|
|
|
FGLDebug::LabelObject(GL_TEXTURE, glTexID, name);
|
|
|
|
|
|
|
|
rw = GetTexDimension(w);
|
|
|
|
rh = GetTexDimension(h);
|
|
|
|
if (glBufferID > 0)
|
|
|
|
{
|
|
|
|
glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER);
|
|
|
|
buffer = nullptr;
|
|
|
|
}
|
|
|
|
else if (!buffer)
|
|
|
|
{
|
|
|
|
// The texture must at least be initialized if no data is present.
|
|
|
|
mipmapped = false;
|
|
|
|
buffer=(unsigned char *)calloc(4,rw * (rh+1));
|
|
|
|
deletebuffer=true;
|
|
|
|
//texheight=-h;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
if (rw < w || rh < h)
|
|
|
|
{
|
|
|
|
// The texture is larger than what the hardware can handle so scale it down.
|
|
|
|
unsigned char * scaledbuffer=(unsigned char *)calloc(4,rw * (rh+1));
|
|
|
|
if (scaledbuffer)
|
|
|
|
{
|
|
|
|
Resize(w, h, rw, rh, buffer, scaledbuffer);
|
|
|
|
deletebuffer=true;
|
|
|
|
buffer=scaledbuffer;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// store the physical size.
|
|
|
|
|
|
|
|
int sourcetype;
|
|
|
|
if (glTextureBytes > 0)
|
|
|
|
{
|
|
|
|
if (glTextureBytes < 4) glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
|
|
|
|
static const int ITypes[] = { GL_R8, GL_RG8, GL_RGB8, GL_RGBA8 };
|
|
|
|
static const int STypes[] = { GL_RED, GL_RG, GL_BGR, GL_BGRA };
|
|
|
|
|
|
|
|
texformat = ITypes[glTextureBytes - 1];
|
|
|
|
sourcetype = STypes[glTextureBytes - 1];
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
sourcetype = GL_BGRA;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!firstCall && glBufferID > 0)
|
|
|
|
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, rw, rh, sourcetype, GL_UNSIGNED_BYTE, buffer);
|
|
|
|
else
|
|
|
|
glTexImage2D(GL_TEXTURE_2D, 0, texformat, rw, rh, 0, sourcetype, GL_UNSIGNED_BYTE, buffer);
|
|
|
|
|
|
|
|
if (deletebuffer && buffer) free(buffer);
|
|
|
|
else if (glBufferID)
|
|
|
|
{
|
|
|
|
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
|
|
|
|
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (mipmap && TexFilter[gl_texture_filter].mipmapping)
|
|
|
|
{
|
|
|
|
glGenerateMipmap(GL_TEXTURE_2D);
|
|
|
|
mipmapped = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (texunit > 0) glActiveTexture(GL_TEXTURE0);
|
|
|
|
else if (texunit == -1) glBindTexture(GL_TEXTURE_2D, textureBinding);
|
|
|
|
return glTexID;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
//===========================================================================
|
|
|
|
//
|
|
|
|
//
|
|
|
|
//
|
|
|
|
//===========================================================================
|
|
|
|
void FHardwareTexture::AllocateBuffer(int w, int h, int texelsize)
|
|
|
|
{
|
|
|
|
int rw = GetTexDimension(w);
|
|
|
|
int rh = GetTexDimension(h);
|
|
|
|
if (texelsize < 1 || texelsize > 4) texelsize = 4;
|
|
|
|
glTextureBytes = texelsize;
|
|
|
|
bufferpitch = w;
|
|
|
|
if (rw == w || rh == h)
|
|
|
|
{
|
|
|
|
glGenBuffers(1, &glBufferID);
|
|
|
|
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, glBufferID);
|
|
|
|
glBufferData(GL_PIXEL_UNPACK_BUFFER, w*h*texelsize, nullptr, GL_STREAM_DRAW);
|
|
|
|
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
uint8_t *FHardwareTexture::MapBuffer()
|
|
|
|
{
|
|
|
|
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, glBufferID);
|
|
|
|
return (uint8_t*)glMapBuffer(GL_PIXEL_UNPACK_BUFFER, GL_WRITE_ONLY);
|
|
|
|
}
|
|
|
|
|
|
|
|
//===========================================================================
|
|
|
|
//
|
|
|
|
// Destroys the texture
|
|
|
|
//
|
|
|
|
//===========================================================================
|
|
|
|
FHardwareTexture::~FHardwareTexture()
|
|
|
|
{
|
|
|
|
if (glTexID != 0) glDeleteTextures(1, &glTexID);
|
|
|
|
if (glBufferID != 0) glDeleteBuffers(1, &glBufferID);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
//===========================================================================
|
|
|
|
//
|
|
|
|
// Binds this patch
|
|
|
|
//
|
|
|
|
//===========================================================================
|
|
|
|
unsigned int FHardwareTexture::Bind(int texunit, bool needmipmap)
|
|
|
|
{
|
|
|
|
if (glTexID != 0)
|
|
|
|
{
|
|
|
|
if (lastbound[texunit] == glTexID) return glTexID;
|
|
|
|
lastbound[texunit] = glTexID;
|
|
|
|
if (texunit != 0) glActiveTexture(GL_TEXTURE0 + texunit);
|
|
|
|
glBindTexture(GL_TEXTURE_2D, glTexID);
|
|
|
|
// Check if we need mipmaps on a texture that was creted without them.
|
|
|
|
if (needmipmap && !mipmapped && TexFilter[gl_texture_filter].mipmapping)
|
|
|
|
{
|
|
|
|
glGenerateMipmap(GL_TEXTURE_2D);
|
|
|
|
mipmapped = true;
|
|
|
|
}
|
|
|
|
if (texunit != 0) glActiveTexture(GL_TEXTURE0);
|
|
|
|
return glTexID;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void FHardwareTexture::Unbind(int texunit)
|
|
|
|
{
|
|
|
|
if (lastbound[texunit] != 0)
|
|
|
|
{
|
|
|
|
if (texunit != 0) glActiveTexture(GL_TEXTURE0+texunit);
|
|
|
|
glBindTexture(GL_TEXTURE_2D, 0);
|
|
|
|
if (texunit != 0) glActiveTexture(GL_TEXTURE0);
|
|
|
|
lastbound[texunit] = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void FHardwareTexture::UnbindAll()
|
|
|
|
{
|
|
|
|
for(int texunit = 0; texunit < 16; texunit++)
|
|
|
|
{
|
|
|
|
Unbind(texunit);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
//===========================================================================
|
|
|
|
//
|
|
|
|
// Creates a depth buffer for this texture
|
|
|
|
//
|
|
|
|
//===========================================================================
|
|
|
|
|
|
|
|
int FHardwareTexture::GetDepthBuffer(int width, int height)
|
|
|
|
{
|
|
|
|
if (glDepthID == 0)
|
|
|
|
{
|
|
|
|
glGenRenderbuffers(1, &glDepthID);
|
|
|
|
glBindRenderbuffer(GL_RENDERBUFFER, glDepthID);
|
|
|
|
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8,
|
|
|
|
GetTexDimension(width), GetTexDimension(height));
|
|
|
|
glBindRenderbuffer(GL_RENDERBUFFER, 0);
|
|
|
|
}
|
|
|
|
return glDepthID;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
//===========================================================================
|
|
|
|
//
|
|
|
|
// Binds this texture's surfaces to the current framrbuffer
|
|
|
|
//
|
|
|
|
//===========================================================================
|
|
|
|
|
|
|
|
void FHardwareTexture::BindToFrameBuffer(int width, int height)
|
|
|
|
{
|
|
|
|
width = GetTexDimension(width);
|
|
|
|
height = GetTexDimension(height);
|
|
|
|
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, glTexID, 0);
|
|
|
|
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, GetDepthBuffer(width, height));
|
|
|
|
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, GetDepthBuffer(width, height));
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
//===========================================================================
|
|
|
|
//
|
|
|
|
// Binds a texture to the renderer
|
|
|
|
//
|
|
|
|
//===========================================================================
|
|
|
|
|
|
|
|
bool FHardwareTexture::BindOrCreate(FTexture *tex, int texunit, int clampmode, int translation, int flags)
|
|
|
|
{
|
|
|
|
int usebright = false;
|
|
|
|
|
2020-05-29 13:55:08 +00:00
|
|
|
bool needmipmap = (clampmode <= CLAMP_XY) && !forcenofilter;
|
2020-05-28 23:03:01 +00:00
|
|
|
|
|
|
|
// Bind it to the system.
|
|
|
|
if (!Bind(texunit, needmipmap))
|
|
|
|
{
|
2020-05-30 19:45:17 +00:00
|
|
|
if (flags & CTF_Indexed)
|
|
|
|
{
|
|
|
|
glTextureBytes = 1;
|
|
|
|
forcenofilter = true;
|
2020-12-10 19:46:44 +00:00
|
|
|
needmipmap = false;
|
2020-05-30 19:45:17 +00:00
|
|
|
}
|
2020-05-28 23:03:01 +00:00
|
|
|
int w = 0, h = 0;
|
|
|
|
|
|
|
|
// Create this texture
|
|
|
|
|
|
|
|
FTextureBuffer texbuffer;
|
|
|
|
|
|
|
|
if (!tex->isHardwareCanvas())
|
|
|
|
{
|
|
|
|
texbuffer = tex->CreateTexBuffer(translation, flags | CTF_ProcessData);
|
|
|
|
w = texbuffer.mWidth;
|
|
|
|
h = texbuffer.mHeight;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
w = tex->GetWidth();
|
|
|
|
h = tex->GetHeight();
|
|
|
|
}
|
|
|
|
if (!CreateTexture(texbuffer.mBuffer, w, h, texunit, needmipmap, "FHardwareTexture.BindOrCreate"))
|
|
|
|
{
|
|
|
|
// could not create texture
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|
2020-05-30 19:45:17 +00:00
|
|
|
if (forcenofilter && clampmode <= CLAMP_XY) clampmode += CLAMP_NOFILTER - CLAMP_NONE;
|
2020-05-28 23:03:01 +00:00
|
|
|
GLRenderer->mSamplerManager->Bind(texunit, clampmode, 255);
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|