Major check-in of changes for GL_EXT_framebuffer_object extension.

Main driver impacts:
- new code for creating the Mesa GLframebuffer
- new span/pixel read/write code
Some drivers not yet updated/tested.

1 files changed, 16 insertions, 125 deletions

diff --git a/src/mesa/main/fbobject.h b/src/mesa/main/fbobject.h
index 0241da2efc..2c86ef9372 100644
--- a/src/mesa/main/fbobject.h
+++ b/src/mesa/main/fbobject.h
@@ -27,137 +27,28 @@
 #define FBOBJECT_H
 
 
-/**
- * A renderbuffer stores colors or depth values or stencil values.
- * A framebuffer object will have a collection of these.
- * Data are read/written to the buffer with a handful of Get/Put functions.
- *
- * Instances of this object are allocated with the Driver's NewRenderbuffer
- * hook.  Drivers will likely wrap this class inside a driver-specific
- * class to simulate inheritance.
- */
-struct gl_renderbuffer
-{
-   GLuint Name;
-   GLint RefCount;
-   GLuint Width, Height;
-   GLenum InternalFormat;
-   GLenum _BaseFormat;  /* Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or */
-                        /* GL_STENCIL_INDEX. */
-
-   GLenum DataType; /* GL_UNSIGNED_BYTE, GL_UNSIGNED_SHORT, etc */
-   GLvoid *Data;
-
-   /* Delete this renderbuffer */
-   void (*Delete)(GLcontext *ctx, struct gl_renderbuffer *rb);
-
-   /* Allocate new storage for this renderbuffer */
-   GLboolean (*AllocStorage)(GLcontext *ctx, struct gl_renderbuffer *rb,
-                             GLenum internalFormat,
-                             GLuint width, GLuint height);
-
-   /* Return a pointer to the element/pixel at (x,y).
-    * Should return NULL if the buffer memory can't be directly addressed.
-    */
-   void *(*GetPointer)(struct gl_renderbuffer *rb, GLint x, GLint y);
-
-   /* Get/Read a row of values.
-    * The values will be of format _BaseFormat and type DataType.
-    */
-   void (*GetRow)(struct gl_renderbuffer *rb,
-                  GLint x, GLint y, GLuint count, void *values);
-
-   /* Get/Read values at arbitrary locations
-    * The values will be of format _BaseFormat and type DataType.
-    */
-   void (*GetValues)(struct gl_renderbuffer *rb,
-                     const GLint x[], const GLint y[],
-                     GLuint count, void *values);
-
-   /* Put/Write a row of values
-    * The values will be of format _BaseFormat and type DataType.
-    */
-   void (*PutRow)(struct gl_renderbuffer *rb,
-                  GLint x, GLint y, GLuint count,
-                  const void *values, const GLubyte *maek);
-
-   /* Put/Write values at arbitrary locations
-    * The values will be of format _BaseFormat and type DataType.
-    */
-   void (*PutValues)(struct gl_renderbuffer *rb,
-                     const GLint x[], const GLint y[], GLuint count,
-                     const void *values, const GLubyte *mask);
-};
-
-
-/**
- * A renderbuffer attachment point points to either a texture object
- * (and specifies a mipmap level, cube face or 3D texture slice) or
- * points to a renderbuffer.
- */
-struct gl_renderbuffer_attachment
-{
-   GLenum Type;  /* GL_NONE or GL_TEXTURE or GL_RENDERBUFFER_EXT */
-   GLboolean Complete;
-
-   /* IF Type == GL_RENDERBUFFER_EXT: */
-   struct gl_renderbuffer *Renderbuffer;
-
-   /* IF Type == GL_TEXTURE: */
-   struct gl_texture_object *Texture;
-   GLuint TextureLevel;
-   GLuint CubeMapFace;  /* 0 .. 5, for cube map textures */
-   GLuint Zoffset;      /* for 3D textures */
-};
-
-
-/**
- * A framebuffer object is basically a collection of rendering buffers.
- * (Though, a rendering buffer might actually be a texture image.)
- * All the renderbuffers/textures which we reference must have the same
- * width and height (and meet a few other requirements) in order for the
- * framebufffer object to be "complete".
- *
- * Instances of this object are allocated with the Driver's Newframebuffer
- * hook.  Drivers will likely wrap this class inside a driver-specific
- * class to simulate inheritance.
- */
-struct gl_framebuffer
-{
-   GLuint Name;
-   GLint RefCount;
-
-   GLenum Status; /* One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
-
-   struct gl_renderbuffer_attachment ColorAttachment[MAX_COLOR_ATTACHMENTS];
-   struct gl_renderbuffer_attachment DepthAttachment;
-   struct gl_renderbuffer_attachment StencilAttachment;
-
-   /* In unextended OpenGL, these vars are part of the GL_COLOR_BUFFER
-    * attribute group and GL_PIXEL attribute group, respectively.
-    */
-   GLenum DrawBuffer[MAX_DRAW_BUFFERS];
-   GLenum ReadBuffer;
-
-   GLuint _Width, _Height;
-
-   /** Delete this framebuffer */
-   void (*Delete)(GLcontext *ctx, struct gl_framebuffer *fb);
-};
-
-
-extern struct gl_framebuffer *
-_mesa_new_framebuffer(GLcontext *ctx, GLuint name);
+extern void
+_mesa_remove_attachment(GLcontext *ctx,
+                        struct gl_renderbuffer_attachment *att);
 
 extern void
-_mesa_delete_framebuffer(GLcontext *ctx, struct gl_framebuffer *fb);
+_mesa_set_texture_attachment(GLcontext *ctx,
+                             struct gl_renderbuffer_attachment *att,
+                             struct gl_texture_object *texObj,
+                             GLenum texTarget, GLuint level, GLuint zoffset);
 
-extern struct gl_renderbuffer *
-_mesa_new_renderbuffer(GLcontext *ctx, GLuint name);
+extern void
+_mesa_set_renderbuffer_attachment(GLcontext *ctx,
+                                  struct gl_renderbuffer_attachment *att,
+                                  struct gl_renderbuffer *rb);
 
 extern void
-_mesa_delete_renderbuffer(GLcontext *ctx, struct gl_renderbuffer *rb);
+_mesa_framebuffer_renderbuffer(GLcontext *ctx,
+                               struct gl_renderbuffer_attachment *att,
+                               struct gl_renderbuffer *rb);
 
+extern void
+_mesa_test_framebuffer_completeness(GLcontext *ctx, struct gl_framebuffer *fb);
 
 extern GLboolean GLAPIENTRY
 _mesa_IsRenderbufferEXT(GLuint renderbuffer);