X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fcore%2Fframebuffer.cpp;h=b0777171448b5a27222e4b631e8d04cc52143ae6;hp=53234cc74696478a630acc11b7fcdcfbfe4e11c9;hb=7ef75a4c4dbfc437e466381dd67c23357e607b82;hpb=24b24e2203c776aacd9744bb947f5cf47b03d328 diff --git a/source/core/framebuffer.cpp b/source/core/framebuffer.cpp index 53234cc7..b0777171 100644 --- a/source/core/framebuffer.cpp +++ b/source/core/framebuffer.cpp @@ -1,14 +1,3 @@ -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include #include "error.h" #include "framebuffer.h" #include "texture2d.h" @@ -26,170 +15,40 @@ framebuffer_incomplete::framebuffer_incomplete(const std::string &reason): { } -Framebuffer::Framebuffer(unsigned i): - id(i), - status(GL_FRAMEBUFFER_COMPLETE), - dirty(0) -{ - if(id) - throw invalid_argument("System framebuffer must have id 0"); - - if(EXT_framebuffer_object) - { - 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); - } - - int view[4]; - glGetIntegerv(GL_VIEWPORT, view); - width = view[2]; - height = view[3]; -} +Framebuffer::Framebuffer(bool s): + FramebufferBackend(s) +{ } -Framebuffer::Framebuffer() -{ - init(); -} +Framebuffer::Framebuffer(): + FramebufferBackend(false) +{ } -Framebuffer::Framebuffer(FrameAttachment fa) +Framebuffer::Framebuffer(FrameAttachment fa): + Framebuffer() { - init(); set_format(fa); } -Framebuffer::Framebuffer(const FrameFormat &f) +Framebuffer::Framebuffer(const FrameFormat &f): + Framebuffer() { - 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) + if(!format.empty()) 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 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<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(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; } @@ -201,27 +60,24 @@ void Framebuffer::check_size() { unsigned w = 0; unsigned h = 0; - if(a.tex->target==GL_TEXTURE_2D) + if(const Texture2D *tex2d = dynamic_cast(a.tex)) { - Texture2D *tex = static_cast(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(a.tex)) { - Texture2DMultisample *tex = static_cast(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(a.tex)) { - Texture3D *tex = static_cast(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(a.tex)) { - w = max(static_cast(a.tex)->get_size()>>a.level, 1U); + w = max(tex_cube->get_size()>>a.level, 1U); h = w; } @@ -241,7 +97,7 @@ void Framebuffer::check_size() void Framebuffer::set_attachment(FrameAttachment attch, Texture &tex, unsigned level, int layer, unsigned samples) { - if(format.empty() || !id) + if(format.empty() || attachments.empty()) throw invalid_operation("Framebuffer::attach"); if((format.get_samples()>1 && samples!=format.get_samples()) || (format.get_samples()==1 && samples)) @@ -285,19 +141,19 @@ void Framebuffer::attach(FrameAttachment attch, TextureCube &tex, TextureCubeFac 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); } void Framebuffer::detach(FrameAttachment attch) { - if(!id) + if(attachments.empty()) throw invalid_operation("Framebuffer::detach"); int i = format.index(attch); @@ -309,20 +165,8 @@ void Framebuffer::detach(FrameAttachment attch) } } -void Framebuffer::resize(const WindowView &view) -{ - if(id) - throw invalid_operation("Framebuffer::resize"); - - width = view.get_width(); - height = view.get_height(); -} - void Framebuffer::require_complete() const { - if(!id) - return; - bool layered = (!attachments.empty() && attachments.front().layer<0); for(const Attachment &a: attachments) { @@ -332,36 +176,9 @@ void Framebuffer::require_complete() const 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)); + FramebufferBackend::require_complete(); } -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 -} - -Framebuffer &Framebuffer::system() -{ - static Framebuffer sys_framebuf(0); - return sys_framebuf; -} - - -Framebuffer::Attachment::Attachment(): - tex(0), - level(0), - layer(0) -{ } void Framebuffer::Attachment::set(Texture &t, unsigned l, int z) {