Use ARB_direct_state_access to avoid some bind calls

[libs/gl.git] / source / framebuffer.h

diff --git a/source/framebuffer.h b/source/framebuffer.h
index 8a97222c5ffac91a9c852119467130c7c8f5caad..579d22f8f33c3993be7ee7f1d1f78d984a207267 100644 (file)
--- a/source/framebuffer.h
+++ b/source/framebuffer.h
@@ -5,6 +5,8 @@
 #include "bindable.h"
 #include "gl.h"
 #include "texturecube.h"
+#include <msp/gl/extensions/ext_framebuffer_object.h>
+#include <msp/gl/extensions/msp_stereo_rendering.h>
 
 namespace Msp {
 namespace GL {
@@ -15,32 +17,31 @@ class Texture2D;
 
 enum FramebufferAttachment
 {
-       COLOR_ATTACHMENT0  = GL_COLOR_ATTACHMENT0_EXT,
-       COLOR_ATTACHMENT1  = GL_COLOR_ATTACHMENT1_EXT,
-       COLOR_ATTACHMENT2  = GL_COLOR_ATTACHMENT2_EXT,
-       COLOR_ATTACHMENT3  = GL_COLOR_ATTACHMENT3_EXT,
-       DEPTH_ATTACHMENT   = GL_DEPTH_ATTACHMENT_EXT,
-       STENCIL_ATTACHMENT = GL_STENCIL_ATTACHMENT_EXT
+       COLOR_ATTACHMENT0  = GL_COLOR_ATTACHMENT0,
+       COLOR_ATTACHMENT1  = GL_COLOR_ATTACHMENT1,
+       COLOR_ATTACHMENT2  = GL_COLOR_ATTACHMENT2,
+       COLOR_ATTACHMENT3  = GL_COLOR_ATTACHMENT3,
+       DEPTH_ATTACHMENT   = GL_DEPTH_ATTACHMENT,
+       STENCIL_ATTACHMENT = GL_STENCIL_ATTACHMENT
 };
 
 enum FramebufferStatus
 {
-       FRAMEBUFFER_INCOMPLETE_ATTACHMENT         = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT,
-       FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT,
-       FRAMEBUFFER_INCOMPLETE_DIMENSIONS         = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT,
-       FRAMEBUFFER_INCOMPLETE_FORMATS            = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT,
-       FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER        = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT,
-       FRAMEBUFFER_INCOMPLETE_READ_BUFFER        = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT,
-       FRAMEBUFFER_UNSUPPORTED                   = GL_FRAMEBUFFER_UNSUPPORTED_EXT,
-       FRAMEBUFFER_COMPLETE                      = GL_FRAMEBUFFER_COMPLETE_EXT
+       FRAMEBUFFER_INCOMPLETE_ATTACHMENT         = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT,
+       FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT,
+       FRAMEBUFFER_INCOMPLETE_DIMENSIONS         = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS,
+       FRAMEBUFFER_INCOMPLETE_FORMATS            = GL_FRAMEBUFFER_INCOMPLETE_FORMATS,
+       FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER        = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER,
+       FRAMEBUFFER_INCOMPLETE_READ_BUFFER        = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER,
+       FRAMEBUFFER_UNSUPPORTED                   = GL_FRAMEBUFFER_UNSUPPORTED,
+       FRAMEBUFFER_COMPLETE                      = GL_FRAMEBUFFER_COMPLETE
 };
 
 enum BufferBits
 {
        COLOR_BUFFER_BIT   = GL_COLOR_BUFFER_BIT,
        DEPTH_BUFFER_BIT   = GL_DEPTH_BUFFER_BIT,
-       STENCIL_BUFFER_BIT = GL_STENCIL_BUFFER_BIT,
-       ACCUM_BUFFER_BIT   = GL_ACCUM_BUFFER_BIT
+       STENCIL_BUFFER_BIT = GL_STENCIL_BUFFER_BIT
 };
 
 enum RWBuffer
@@ -57,6 +58,13 @@ enum RWBuffer
        FRONT_AND_BACK = GL_FRONT_AND_BACK
 };
 
+class framebuffer_incomplete: public std::runtime_error
+{
+public:
+       framebuffer_incomplete(FramebufferStatus);
+       virtual ~framebuffer_incomplete() throw() { }
+};
+
 /**
 Framebuffer objects can be used to perform offscreen rendering.  The most
 common application is rendering to a texture, which can then be used for
@@ -82,18 +90,29 @@ private:
                        Texture *tex;
                };
                unsigned level;
-               GLenum cube_face;
+               unsigned layer;
 
                Attachment(FramebufferAttachment);
                void set(Renderbuffer &);
-               void set(Texture &, GLenum, unsigned);
+               void set(Texture &, unsigned, unsigned);
                void clear();
        };
 
+       struct Viewport
+       {
+               int left;
+               int bottom;
+               unsigned width;
+               unsigned height;
+
+               Viewport();
+       };
+
        unsigned id;
        std::vector<Attachment> attachments;
        unsigned width;
        unsigned height;
+       Viewport view;
        mutable unsigned dirty;
 
        Framebuffer(unsigned);
@@ -119,6 +138,13 @@ public:
        or one of the error status codes otherwise. */
        FramebufferStatus check_status() const;
 
+       /** Ensures that the framebuffer is complete, throwing an exception if it
+       isn't. */
+       void require_complete() const;
+
+       void viewport(int, int, unsigned, unsigned);
+       void reset_viewport();
+
        void clear(BufferBits);
 
        /** Blits a region from another framebuffer into this one.  If the source