541 lines
15 KiB
C++
541 lines
15 KiB
C++
#include "glcache.h"
|
|
#include "gles.h"
|
|
#include "hw/pvr/pvr_mem.h"
|
|
#include "rend/TexCache.h"
|
|
|
|
#include <cstdio>
|
|
#include <cstdlib>
|
|
|
|
GlTextureCache TexCache;
|
|
|
|
static void readAsyncPixelBuffer(u32 addr);
|
|
|
|
void TextureCacheData::UploadToGPU(int width, int height, const u8 *temp_tex_buffer, bool mipmapped, bool mipmapsIncluded)
|
|
{
|
|
//upload to OpenGL !
|
|
glcache.BindTexture(GL_TEXTURE_2D, texID);
|
|
GLuint comps = tex_type == TextureType::_8 ? gl.single_channel_format : GL_RGBA;
|
|
GLuint gltype;
|
|
u32 bytes_per_pixel = 2;
|
|
switch (tex_type)
|
|
{
|
|
case TextureType::_5551:
|
|
gltype = GL_UNSIGNED_SHORT_5_5_5_1;
|
|
break;
|
|
case TextureType::_565:
|
|
gltype = GL_UNSIGNED_SHORT_5_6_5;
|
|
comps = GL_RGB;
|
|
break;
|
|
case TextureType::_4444:
|
|
gltype = GL_UNSIGNED_SHORT_4_4_4_4;
|
|
break;
|
|
case TextureType::_8888:
|
|
bytes_per_pixel = 4;
|
|
gltype = GL_UNSIGNED_BYTE;
|
|
break;
|
|
case TextureType::_8:
|
|
bytes_per_pixel = 1;
|
|
gltype = GL_UNSIGNED_BYTE;
|
|
break;
|
|
default:
|
|
die("Unsupported texture type");
|
|
gltype = 0;
|
|
break;
|
|
}
|
|
if (mipmapsIncluded)
|
|
{
|
|
int mipmapLevels = 0;
|
|
int dim = width;
|
|
while (dim != 0)
|
|
{
|
|
mipmapLevels++;
|
|
dim >>= 1;
|
|
}
|
|
#if !defined(GLES2) && (!defined(__APPLE__) || defined(TARGET_IPHONE))
|
|
// OpenGL 4.2 or GLES 3.0 min
|
|
if (gl.gl_major > 4 || (gl.gl_major == 4 && gl.gl_minor >= 2)
|
|
|| (gl.is_gles && gl.gl_major >= 3))
|
|
{
|
|
GLuint internalFormat;
|
|
switch (tex_type)
|
|
{
|
|
case TextureType::_5551:
|
|
internalFormat = GL_RGB5_A1;
|
|
break;
|
|
case TextureType::_565:
|
|
internalFormat = GL_RGB565;
|
|
break;
|
|
case TextureType::_4444:
|
|
internalFormat = GL_RGBA4;
|
|
break;
|
|
case TextureType::_8888:
|
|
internalFormat = GL_RGBA8;
|
|
break;
|
|
case TextureType::_8:
|
|
internalFormat = comps;
|
|
break;
|
|
default:
|
|
die("Unsupported texture format");
|
|
internalFormat = 0;
|
|
break;
|
|
}
|
|
if (Updates == 1)
|
|
{
|
|
glTexStorage2D(GL_TEXTURE_2D, mipmapLevels, internalFormat, width, height);
|
|
glCheck();
|
|
}
|
|
for (int i = 0; i < mipmapLevels; i++)
|
|
{
|
|
glTexSubImage2D(GL_TEXTURE_2D, mipmapLevels - i - 1, 0, 0, 1 << i, 1 << i, comps, gltype, temp_tex_buffer);
|
|
temp_tex_buffer += (1 << (2 * i)) * bytes_per_pixel;
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
for (int i = 0; i < mipmapLevels; i++)
|
|
{
|
|
glTexImage2D(GL_TEXTURE_2D, mipmapLevels - i - 1, comps, 1 << i, 1 << i, 0, comps, gltype, temp_tex_buffer);
|
|
temp_tex_buffer += (1 << (2 * i)) * bytes_per_pixel;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
glTexImage2D(GL_TEXTURE_2D, 0,comps, width, height, 0, comps, gltype, temp_tex_buffer);
|
|
if (mipmapped)
|
|
glGenerateMipmap(GL_TEXTURE_2D);
|
|
}
|
|
glCheck();
|
|
}
|
|
|
|
bool TextureCacheData::Delete()
|
|
{
|
|
if (!BaseTextureCacheData::Delete())
|
|
return false;
|
|
|
|
if (texID)
|
|
glcache.DeleteTextures(1, &texID);
|
|
|
|
return true;
|
|
}
|
|
|
|
GLuint BindRTT(bool withDepthBuffer)
|
|
{
|
|
GLenum channels, format;
|
|
switch(pvrrc.fb_W_CTRL.fb_packmode)
|
|
{
|
|
case 0: //0x0 0555 KRGB 16 bit (default) Bit 15 is the value of fb_kval[7].
|
|
channels = GL_RGBA;
|
|
format = GL_UNSIGNED_BYTE;
|
|
break;
|
|
|
|
case 1: //0x1 565 RGB 16 bit
|
|
channels = GL_RGB;
|
|
format = GL_UNSIGNED_SHORT_5_6_5;
|
|
break;
|
|
|
|
case 2: //0x2 4444 ARGB 16 bit
|
|
channels = GL_RGBA;
|
|
format = GL_UNSIGNED_BYTE;
|
|
break;
|
|
|
|
case 3://0x3 1555 ARGB 16 bit The alpha value is determined by comparison with the value of fb_alpha_threshold.
|
|
channels = GL_RGBA;
|
|
format = GL_UNSIGNED_BYTE;
|
|
break;
|
|
|
|
case 4: //0x4 888 RGB 24 bit packed
|
|
case 5: //0x5 0888 KRGB 32 bit K is the value of fk_kval.
|
|
case 6: //0x6 8888 ARGB 32 bit
|
|
WARN_LOG(RENDERER, "Unsupported render to texture format: %d", pvrrc.fb_W_CTRL.fb_packmode);
|
|
return 0;
|
|
|
|
case 7: //7 invalid
|
|
WARN_LOG(RENDERER, "Invalid framebuffer format: 7");
|
|
return 0;
|
|
}
|
|
u32 fbw = pvrrc.getFramebufferWidth();
|
|
u32 fbh = pvrrc.getFramebufferHeight();
|
|
u32 texAddress = pvrrc.fb_W_SOF1 & VRAM_MASK;
|
|
DEBUG_LOG(RENDERER, "RTT packmode=%d stride=%d - %d x %d @ %06x", pvrrc.fb_W_CTRL.fb_packmode, pvrrc.fb_W_LINESTRIDE * 8,
|
|
fbw, fbh, texAddress);
|
|
|
|
if (gl.rtt.texAddress != ~0u)
|
|
readAsyncPixelBuffer(gl.rtt.texAddress);
|
|
gl.rtt.texAddress = texAddress;
|
|
|
|
gl.rtt.framebuffer.reset();
|
|
|
|
u32 fbw2;
|
|
u32 fbh2;
|
|
getRenderToTextureDimensions(fbw, fbh, fbw2, fbh2);
|
|
|
|
#ifdef GL_PIXEL_PACK_BUFFER
|
|
if (gl.gl_major >= 3 && config::RenderToTextureBuffer)
|
|
{
|
|
if (gl.rtt.pbo == 0)
|
|
glGenBuffers(1, &gl.rtt.pbo);
|
|
u32 glSize = fbw2 * fbh2 * 4;
|
|
if (glSize > gl.rtt.pboSize)
|
|
{
|
|
glBindBuffer(GL_PIXEL_PACK_BUFFER, gl.rtt.pbo);
|
|
glBufferData(GL_PIXEL_PACK_BUFFER, glSize, 0, GL_STREAM_READ);
|
|
gl.rtt.pboSize = glSize;
|
|
glCheck();
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// Create a texture for rendering to
|
|
GLuint texture = glcache.GenTexture();
|
|
glcache.BindTexture(GL_TEXTURE_2D, texture);
|
|
glTexImage2D(GL_TEXTURE_2D, 0, channels, fbw2, fbh2, 0, channels, format, 0);
|
|
|
|
gl.rtt.framebuffer = std::unique_ptr<GlFramebuffer>(new GlFramebuffer((int)fbw2, (int)fbh2, withDepthBuffer, texture));
|
|
|
|
glViewport(0, 0, fbw, fbh);
|
|
|
|
return gl.rtt.framebuffer->getFramebuffer();
|
|
}
|
|
|
|
constexpr u32 MAGIC_NUMBER = 0xbaadf00d;
|
|
|
|
void ReadRTTBuffer()
|
|
{
|
|
u32 w = pvrrc.getFramebufferWidth();
|
|
u32 h = pvrrc.getFramebufferHeight();
|
|
|
|
const u8 fb_packmode = pvrrc.fb_W_CTRL.fb_packmode;
|
|
|
|
if (config::RenderToTextureBuffer)
|
|
{
|
|
u32 tex_addr = gl.rtt.texAddress;
|
|
#ifdef TARGET_VIDEOCORE
|
|
// Remove all vram locks before calling glReadPixels
|
|
// (deadlock on rpi)
|
|
u32 size = w * h * 2;
|
|
u32 page_tex_addr = tex_addr & PAGE_MASK;
|
|
u32 page_size = size + tex_addr - page_tex_addr;
|
|
page_size = ((page_size - 1) / PAGE_SIZE + 1) * PAGE_SIZE;
|
|
for (u32 page = page_tex_addr; page < page_tex_addr + page_size; page += PAGE_SIZE)
|
|
VramLockedWriteOffset(page);
|
|
#endif
|
|
|
|
#ifdef GL_PIXEL_PACK_BUFFER
|
|
if (gl.gl_major >= 3)
|
|
glBindBuffer(GL_PIXEL_PACK_BUFFER, gl.rtt.pbo);
|
|
#endif
|
|
|
|
glPixelStorei(GL_PACK_ALIGNMENT, 1);
|
|
gl.rtt.width = w;
|
|
gl.rtt.height = h;
|
|
u16 *dst = gl.gl_major >= 3 ? nullptr : (u16 *)&vram[tex_addr];
|
|
|
|
gl.rtt.linestride = pvrrc.fb_W_LINESTRIDE * 8;
|
|
if (gl.rtt.linestride == 0)
|
|
gl.rtt.linestride = w * 2;
|
|
|
|
GLint color_fmt, color_type;
|
|
glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_FORMAT, &color_fmt);
|
|
glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_TYPE, &color_type);
|
|
|
|
if (fb_packmode == 1 && gl.rtt.linestride == w * 2 && color_fmt == GL_RGB && color_type == GL_UNSIGNED_SHORT_5_6_5)
|
|
{
|
|
gl.rtt.directXfer = true;
|
|
glReadPixels(0, 0, w, h, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, dst);
|
|
if (dst == nullptr)
|
|
*(u32 *)&vram[tex_addr] = MAGIC_NUMBER;
|
|
}
|
|
else
|
|
{
|
|
gl.rtt.directXfer = false;
|
|
if (gl.gl_major >= 3)
|
|
{
|
|
gl.rtt.fb_w_ctrl = pvrrc.fb_W_CTRL;
|
|
glReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, 0);
|
|
*(u32 *)&vram[tex_addr] = MAGIC_NUMBER;
|
|
}
|
|
else
|
|
{
|
|
PixelBuffer<u32> tmp_buf;
|
|
tmp_buf.init(w, h);
|
|
|
|
u8 *p = (u8 *)tmp_buf.data();
|
|
glReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, p);
|
|
|
|
WriteTextureToVRam(w, h, p, dst, pvrrc.fb_W_CTRL, gl.rtt.linestride);
|
|
gl.rtt.texAddress = ~0;
|
|
}
|
|
}
|
|
#ifdef GL_PIXEL_PACK_BUFFER
|
|
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
|
|
#endif
|
|
glCheck();
|
|
}
|
|
else
|
|
{
|
|
//memset(&vram[gl.rtt.texAddress], 0, size);
|
|
if (w <= 1024 && h <= 1024)
|
|
{
|
|
TextureCacheData *texture_data = TexCache.getRTTexture(gl.rtt.texAddress, fb_packmode, w, h);
|
|
glcache.DeleteTextures(1, &texture_data->texID);
|
|
texture_data->texID = gl.rtt.framebuffer->detachTexture();
|
|
texture_data->dirty = 0;
|
|
texture_data->unprotectVRam();
|
|
}
|
|
gl.rtt.texAddress = ~0;
|
|
}
|
|
glBindFramebuffer(GL_FRAMEBUFFER, gl.ofbo.origFbo);
|
|
}
|
|
|
|
static void readAsyncPixelBuffer(u32 addr)
|
|
{
|
|
#ifndef GLES2
|
|
if (!config::RenderToTextureBuffer || gl.rtt.pbo == 0)
|
|
return;
|
|
|
|
u32 tex_addr = gl.rtt.texAddress;
|
|
if (addr != tex_addr)
|
|
return;
|
|
gl.rtt.texAddress = ~0;
|
|
|
|
glBindBuffer(GL_PIXEL_PACK_BUFFER, gl.rtt.pbo);
|
|
u8 *ptr = (u8 *)glMapBufferRange(GL_PIXEL_PACK_BUFFER, 0, gl.rtt.pboSize, GL_MAP_READ_BIT);
|
|
if (ptr == nullptr)
|
|
{
|
|
WARN_LOG(RENDERER, "glMapBuffer failed");
|
|
return;
|
|
}
|
|
u16 *dst = (u16 *)&vram[tex_addr];
|
|
// Make sure the vram region hasn't been overwritten already, otherwise we skip the copy
|
|
// (Worms World Party intro)
|
|
if (*(u32 *)dst == MAGIC_NUMBER)
|
|
{
|
|
if (gl.rtt.directXfer)
|
|
// Can be read directly into vram
|
|
memcpy(dst, ptr, gl.rtt.width * gl.rtt.height * 2);
|
|
else
|
|
WriteTextureToVRam(gl.rtt.width, gl.rtt.height, ptr, dst, gl.rtt.fb_w_ctrl, gl.rtt.linestride);
|
|
}
|
|
glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
|
|
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
|
|
#endif
|
|
}
|
|
|
|
static int TexCacheLookups;
|
|
static int TexCacheHits;
|
|
//static float LastTexCacheStats;
|
|
|
|
BaseTextureCacheData *OpenGLRenderer::GetTexture(TSP tsp, TCW tcw)
|
|
{
|
|
TexCacheLookups++;
|
|
|
|
//lookup texture
|
|
TextureCacheData* tf = TexCache.getTextureCacheData(tsp, tcw);
|
|
|
|
readAsyncPixelBuffer(tf->sa_tex);
|
|
|
|
//update if needed
|
|
if (tf->NeedsUpdate())
|
|
tf->Update();
|
|
else
|
|
{
|
|
if (tf->IsCustomTextureAvailable())
|
|
{
|
|
TexCache.DeleteLater(tf->texID);
|
|
tf->texID = glcache.GenTexture();
|
|
tf->CheckCustomTexture();
|
|
}
|
|
TexCacheHits++;
|
|
}
|
|
|
|
// if (os_GetSeconds() - LastTexCacheStats >= 2.0)
|
|
// {
|
|
// LastTexCacheStats = os_GetSeconds();
|
|
// printf("Texture cache efficiency: %.2f%% cache size %ld\n", (float)TexCacheHits / TexCacheLookups * 100, TexCache.size());
|
|
// TexCacheLookups = 0;
|
|
// TexCacheHits = 0;
|
|
// }
|
|
|
|
//return gl texture
|
|
return tf;
|
|
}
|
|
|
|
void glReadFramebuffer(const FramebufferInfo& info)
|
|
{
|
|
PixelBuffer<u32> pb;
|
|
ReadFramebuffer(info, pb, gl.dcfb.width, gl.dcfb.height);
|
|
|
|
if (gl.dcfb.tex == 0)
|
|
gl.dcfb.tex = glcache.GenTexture();
|
|
|
|
glcache.BindTexture(GL_TEXTURE_2D, gl.dcfb.tex);
|
|
|
|
//set texture repeat mode
|
|
glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
|
glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
|
glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, gl.dcfb.width, gl.dcfb.height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pb.data());
|
|
}
|
|
|
|
GLuint init_output_framebuffer(int width, int height)
|
|
{
|
|
if (gl.ofbo.framebuffer != nullptr
|
|
&& (width != gl.ofbo.framebuffer->getWidth() || height != gl.ofbo.framebuffer->getHeight()
|
|
// if the rotate90 setting has changed
|
|
|| (gl.gl_major >= 3 && (gl.ofbo.framebuffer->getTexture() == 0) == config::Rotate90)))
|
|
{
|
|
gl.ofbo.framebuffer.reset();
|
|
}
|
|
|
|
if (gl.ofbo.framebuffer == nullptr)
|
|
{
|
|
GLuint texture = 0;
|
|
if (config::Rotate90)
|
|
{
|
|
// Create a texture for rendering to
|
|
texture = glcache.GenTexture();
|
|
glcache.BindTexture(GL_TEXTURE_2D, texture);
|
|
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
|
|
glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
|
glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
|
}
|
|
gl.ofbo.framebuffer = std::unique_ptr<GlFramebuffer>(new GlFramebuffer(width, height, true, texture));
|
|
|
|
glcache.Disable(GL_SCISSOR_TEST);
|
|
glcache.ClearColor(0.f, 0.f, 0.f, 0.f);
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
}
|
|
else
|
|
gl.ofbo.framebuffer->bind();
|
|
|
|
glViewport(0, 0, width, height);
|
|
glCheck();
|
|
|
|
return gl.ofbo.framebuffer->getFramebuffer();
|
|
}
|
|
|
|
GlFramebuffer::GlFramebuffer(int width, int height, bool withDepth, GLuint texture)
|
|
: width(width), height(height), texture(texture)
|
|
{
|
|
if (this->texture == 0)
|
|
{
|
|
if (gl.gl_major < 3)
|
|
{
|
|
// Create a texture for rendering to
|
|
this->texture = glcache.GenTexture();
|
|
glcache.BindTexture(GL_TEXTURE_2D, this->texture);
|
|
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
|
|
glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
|
glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
|
}
|
|
else
|
|
{
|
|
// Use a renderbuffer and glBlitFramebuffer
|
|
glGenRenderbuffers(1, &colorBuffer);
|
|
glBindRenderbuffer(GL_RENDERBUFFER, colorBuffer);
|
|
#ifdef GL_RGBA8
|
|
glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA8, width, height);
|
|
#endif
|
|
}
|
|
}
|
|
makeFramebuffer(withDepth);
|
|
}
|
|
|
|
void GlFramebuffer::makeFramebuffer(bool withDepth)
|
|
{
|
|
// Create the framebuffer
|
|
glGenFramebuffers(1, &framebuffer);
|
|
bind();
|
|
|
|
if (withDepth)
|
|
{
|
|
// Generate and bind a render buffer which will become a depth buffer
|
|
glGenRenderbuffers(1, &depthBuffer);
|
|
glBindRenderbuffer(GL_RENDERBUFFER, depthBuffer);
|
|
|
|
// Currently it is unknown to GL that we want our new render buffer to be a depth buffer.
|
|
// glRenderbufferStorage will fix this and will allocate a depth buffer
|
|
if (gl.is_gles)
|
|
{
|
|
#if defined(GL_DEPTH24_STENCIL8)
|
|
if (gl.gl_major >= 3)
|
|
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, width, height);
|
|
else
|
|
#endif
|
|
#if defined(GL_DEPTH24_STENCIL8_OES)
|
|
if (gl.GL_OES_packed_depth_stencil_supported)
|
|
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8_OES, width, height);
|
|
else
|
|
#endif
|
|
#if defined(GL_DEPTH_COMPONENT24_OES)
|
|
if (gl.GL_OES_depth24_supported)
|
|
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24_OES, width, height);
|
|
else
|
|
#endif
|
|
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, width, height);
|
|
}
|
|
#ifdef GL_DEPTH24_STENCIL8
|
|
else
|
|
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, width, height);
|
|
#endif
|
|
|
|
// Attach the depth buffer we just created to our FBO.
|
|
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depthBuffer);
|
|
|
|
if (!gl.is_gles || gl.gl_major >= 3 || gl.GL_OES_packed_depth_stencil_supported)
|
|
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, depthBuffer);
|
|
}
|
|
|
|
// Attach the texture/renderbuffer to the FBO
|
|
if (texture != 0)
|
|
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);
|
|
else
|
|
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, colorBuffer);
|
|
}
|
|
|
|
GlFramebuffer::GlFramebuffer(int width, int height, bool withDepth, bool withTexture)
|
|
: width(width), height(height), texture(0)
|
|
{
|
|
if (gl.gl_major < 3 || withTexture)
|
|
{
|
|
// Create a texture for rendering to
|
|
texture = glcache.GenTexture();
|
|
glcache.BindTexture(GL_TEXTURE_2D, texture);
|
|
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
|
|
glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
|
glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
|
}
|
|
else
|
|
{
|
|
// Use a renderbuffer and glBlitFramebuffer
|
|
glGenRenderbuffers(1, &colorBuffer);
|
|
glBindRenderbuffer(GL_RENDERBUFFER, colorBuffer);
|
|
#ifdef GL_RGBA8
|
|
glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA8, width, height);
|
|
#endif
|
|
}
|
|
|
|
makeFramebuffer(withDepth);
|
|
}
|
|
|
|
GlFramebuffer::~GlFramebuffer()
|
|
{
|
|
glDeleteFramebuffers(1, &framebuffer);
|
|
glDeleteRenderbuffers(1, &depthBuffer);
|
|
glcache.DeleteTextures(1, &texture);
|
|
glDeleteRenderbuffers(1, &colorBuffer);
|
|
}
|