-#include <msp/gl/extensions/arb_draw_buffers.h>
-#include <msp/gl/extensions/arb_direct_state_access.h>
-#include <msp/gl/extensions/arb_geometry_shader4.h>
-#include <msp/gl/extensions/arb_internalformat_query.h>
-#include <msp/gl/extensions/arb_internalformat_query2.h>
-#include <msp/gl/extensions/ext_framebuffer_object.h>
-#include <msp/gl/extensions/ext_texture_array.h>
-#include <msp/gl/extensions/ext_texture3d.h>
-#include <msp/gl/extensions/msp_buffer_control.h>
-#include <msp/gl/extensions/khr_debug.h>
-#include <msp/strings/format.h>
#include "error.h"
#include "framebuffer.h"
#include "texture2d.h"
{ }
-Framebuffer::Framebuffer(unsigned i):
- id(i),
- status(GL_FRAMEBUFFER_COMPLETE),
+Framebuffer::Framebuffer(bool s):
+ FramebufferBackend(s),
dirty(0)
{
- if(id)
- throw invalid_argument("System framebuffer must have id 0");
-
- if(EXT_framebuffer_object)
+ if(s)
{
- int value;
- glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_BACK, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &value);
- if(value==GL_NONE)
- glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_FRONT, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &value);
- if(value!=GL_NONE)
- format = (format,COLOR_ATTACHMENT);
-
- glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_DEPTH, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &value);
- if(value!=GL_NONE)
- format = (format,DEPTH_ATTACHMENT);
-
- glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_STENCIL, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &value);
- if(value!=GL_NONE)
- format = (format,STENCIL_ATTACHMENT);
+ format = get_system_format();
+ get_system_size(width, height);
}
-
- int view[4];
- glGetIntegerv(GL_VIEWPORT, view);
- width = view[2];
- height = view[3];
}
-Framebuffer::Framebuffer()
+Framebuffer::Framebuffer():
+ FramebufferBackend(false)
{
init();
}
-Framebuffer::Framebuffer(FrameAttachment fa)
+Framebuffer::Framebuffer(FrameAttachment fa):
+ FramebufferBackend(false)
{
init();
set_format(fa);
}
-Framebuffer::Framebuffer(const FrameFormat &f)
+Framebuffer::Framebuffer(const FrameFormat &f):
+ FramebufferBackend(false)
{
init();
set_format(f);
void Framebuffer::init()
{
- static Require _req(EXT_framebuffer_object);
-
width = 0;
height = 0;
- status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT;
dirty = 0;
-
- if(ARB_direct_state_access)
- glCreateFramebuffers(1, &id);
- else
- glGenFramebuffers(1, &id);
-}
-
-Framebuffer::~Framebuffer()
-{
- if(id)
- glDeleteFramebuffers(1, &id);
}
void Framebuffer::set_format(const FrameFormat &fmt)
{
if(!format.empty() || !id)
throw invalid_operation("Framebuffer::set_format");
- if(fmt.empty())
+ if(fmt.empty() || !is_format_supported(fmt))
throw invalid_argument("Framebuffer::set_format");
- if(ARB_internalformat_query && ARB_internalformat_query2)
- {
- unsigned target = (fmt.get_samples()>1 ? GL_TEXTURE_2D_MULTISAMPLE : GL_TEXTURE_2D);
- for(FrameAttachment a: fmt)
- {
- unsigned pf = get_gl_pixelformat(get_attachment_pixelformat(a));
- int supported = 0;
- glGetInternalformativ(target, pf, GL_FRAMEBUFFER_RENDERABLE, 1, &supported);
- if(supported!=GL_FULL_SUPPORT)
- throw invalid_argument("Framebuffer::set_format");
- }
- }
-
format = fmt;
attachments.resize(format.size());
}
void Framebuffer::update() const
{
- vector<GLenum> color_bufs;
- color_bufs.reserve(format.size());
- unsigned i = 0;
- for(FrameAttachment a: format)
- {
- GLenum gl_attach_point = get_gl_attachment(a);
- if(dirty&(1<<i))
- {
- const Attachment &attch = attachments[i];
- if(attch.tex)
- {
- if(ARB_direct_state_access)
- {
- if(attch.tex->target==GL_TEXTURE_2D || attch.tex->target==GL_TEXTURE_2D_MULTISAMPLE || attch.layer<0)
- glNamedFramebufferTexture(id, gl_attach_point, attch.tex->id, attch.level);
- else
- glNamedFramebufferTextureLayer(id, gl_attach_point, attch.tex->id, attch.level, attch.layer);
- }
- else if(attch.tex->target==GL_TEXTURE_2D || attch.tex->target==GL_TEXTURE_2D_MULTISAMPLE)
- glFramebufferTexture2D(GL_FRAMEBUFFER, gl_attach_point, attch.tex->target, attch.tex->id, attch.level);
- else if(attch.layer<0)
- glFramebufferTexture(GL_FRAMEBUFFER, gl_attach_point, attch.tex->id, attch.level);
- else if(attch.tex->target==GL_TEXTURE_2D_ARRAY)
- glFramebufferTextureLayer(GL_FRAMEBUFFER, gl_attach_point, attch.tex->id, attch.level, attch.layer);
- else if(attch.tex->target==GL_TEXTURE_3D)
- glFramebufferTexture3D(GL_FRAMEBUFFER, gl_attach_point, attch.tex->target, attch.tex->id, attch.level, attch.layer);
- else if(attch.tex->target==GL_TEXTURE_CUBE_MAP)
- glFramebufferTexture2D(GL_FRAMEBUFFER, gl_attach_point, get_gl_cube_face(static_cast<TextureCubeFace>(attch.layer)), attch.tex->id, attch.level);
- }
- else if(ARB_direct_state_access)
- glNamedFramebufferTexture(id, gl_attach_point, 0, 0);
- else
- glFramebufferTexture2D(GL_FRAMEBUFFER, gl_attach_point, GL_TEXTURE_2D, 0, 0);
- }
-
- if(gl_attach_point!=GL_DEPTH_ATTACHMENT && gl_attach_point!=GL_STENCIL_ATTACHMENT)
- color_bufs.push_back(gl_attach_point);
-
- ++i;
- }
-
- if(color_bufs.size()>1)
- static Require _req(ARB_draw_buffers);
-
- GLenum first_buffer = (color_bufs.empty() ? GL_NONE : color_bufs.front());
- if(ARB_direct_state_access)
- {
- /* ARB_direct_state_access ties the availability of these functions to
- framebuffers themselves, so no further checks are needed. */
- glNamedFramebufferDrawBuffers(id, color_bufs.size(), &color_bufs[0]);
- glNamedFramebufferReadBuffer(id, first_buffer);
- }
- else
- {
- if(ARB_draw_buffers)
- glDrawBuffers(color_bufs.size(), &color_bufs[0]);
- else if(MSP_buffer_control)
- glDrawBuffer(first_buffer);
-
- if(MSP_buffer_control)
- glReadBuffer(first_buffer);
- }
-
- if(ARB_direct_state_access)
- status = glCheckNamedFramebufferStatus(id, GL_FRAMEBUFFER);
- else
- status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
-
+ FramebufferBackend::update(dirty);
dirty = 0;
}
{
unsigned w = 0;
unsigned h = 0;
- if(a.tex->target==GL_TEXTURE_2D)
+ if(const Texture2D *tex2d = dynamic_cast<const Texture2D *>(a.tex))
{
- Texture2D *tex = static_cast<Texture2D *>(a.tex);
- w = max(tex->get_width()>>a.level, 1U);
- h = max(tex->get_height()>>a.level, 1U);
+ w = max(tex2d->get_width()>>a.level, 1U);
+ h = max(tex2d->get_height()>>a.level, 1U);
}
- else if(a.tex->target==GL_TEXTURE_2D_MULTISAMPLE)
+ else if(const Texture2DMultisample *tex2d_ms = dynamic_cast<const Texture2DMultisample *>(a.tex))
{
- Texture2DMultisample *tex = static_cast<Texture2DMultisample *>(a.tex);
- w = tex->get_width();
- h = tex->get_height();
+ w = tex2d_ms->get_width();
+ h = tex2d_ms->get_height();
}
- else if(a.tex->target==GL_TEXTURE_3D || a.tex->target==GL_TEXTURE_2D_ARRAY)
+ else if(const Texture3D *tex3d = dynamic_cast<const Texture3D *>(a.tex))
{
- Texture3D *tex = static_cast<Texture3D *>(a.tex);
- w = max(tex->get_width()>>a.level, 1U);
- h = max(tex->get_height()>>a.level, 1U);
+ w = max(tex3d->get_width()>>a.level, 1U);
+ h = max(tex3d->get_height()>>a.level, 1U);
}
- else if(a.tex->target==GL_TEXTURE_CUBE_MAP)
+ else if(const TextureCube *tex_cube = dynamic_cast<const TextureCube *>(a.tex))
{
- w = max(static_cast<TextureCube *>(a.tex)->get_size()>>a.level, 1U);
+ w = max(tex_cube->get_size()>>a.level, 1U);
h = w;
}
void Framebuffer::attach_layered(FrameAttachment attch, Texture3D &tex, unsigned level)
{
- static Require _req(ARB_geometry_shader4);
+ require_layered();
set_attachment(make_typed_attachment(attch, tex.get_format()), tex, level, -1, 0);
}
void Framebuffer::attach_layered(FrameAttachment attch, TextureCube &tex, unsigned level)
{
- static Require _req(ARB_geometry_shader4);
+ require_layered();
set_attachment(make_typed_attachment(attch, tex.get_format()), tex, level, -1, 0);
}
throw framebuffer_incomplete("inconsistent layering");
}
- if(status==GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT)
- throw framebuffer_incomplete("incomplete or unsupported attachment");
- if(status==GL_FRAMEBUFFER_UNSUPPORTED)
- throw framebuffer_incomplete("unsupported configuration");
- if(status!=GL_FRAMEBUFFER_COMPLETE)
- throw framebuffer_incomplete(Msp::format("incomplete (%#x)", status));
-}
-
-void Framebuffer::set_debug_name(const string &name)
-{
-#ifdef DEBUG
- if(KHR_debug)
- glObjectLabel(GL_FRAMEBUFFER, id, name.size(), name.c_str());
-#else
- (void)name;
-#endif
+ FramebufferBackend::require_complete();
}
Framebuffer &Framebuffer::system()
{
- static Framebuffer sys_framebuf(0);
+ static Framebuffer sys_framebuf(true);
return sys_framebuf;
}
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