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-rw-r--r--src/mesa/main/bufferobj.c311
1 files changed, 238 insertions, 73 deletions
diff --git a/src/mesa/main/bufferobj.c b/src/mesa/main/bufferobj.c
index 009055a6ab6..eb418610a72 100644
--- a/src/mesa/main/bufferobj.c
+++ b/src/mesa/main/bufferobj.c
@@ -1,8 +1,8 @@
/*
* Mesa 3-D graphics library
- * Version: 6.5.1
+ * Version: 7.1
*
- * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
@@ -409,6 +409,101 @@ _mesa_init_buffer_objects( GLcontext *ctx )
ctx->Array.ElementArrayBufferObj = ctx->Array.NullBufferObj;
}
+/**
+ * Bind the specified target to buffer for the specified context.
+ */
+static void
+bind_buffer_object(GLcontext *ctx, GLenum target, GLuint buffer)
+{
+ struct gl_buffer_object *oldBufObj;
+ struct gl_buffer_object *newBufObj = NULL;
+ struct gl_buffer_object **bindTarget = NULL;
+
+ switch (target) {
+ case GL_ARRAY_BUFFER_ARB:
+ bindTarget = &ctx->Array.ArrayBufferObj;
+ break;
+ case GL_ELEMENT_ARRAY_BUFFER_ARB:
+ bindTarget = &ctx->Array.ElementArrayBufferObj;
+ break;
+ case GL_PIXEL_PACK_BUFFER_EXT:
+ bindTarget = &ctx->Pack.BufferObj;
+ break;
+ case GL_PIXEL_UNPACK_BUFFER_EXT:
+ bindTarget = &ctx->Unpack.BufferObj;
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferARB(target)");
+ return;
+ }
+
+ /* Get pointer to old buffer object (to be unbound) */
+ oldBufObj = get_buffer(ctx, target);
+ if (oldBufObj && oldBufObj->Name == buffer)
+ return; /* rebinding the same buffer object- no change */
+
+ /*
+ * Get pointer to new buffer object (newBufObj)
+ */
+ if (buffer == 0) {
+ /* The spec says there's not a buffer object named 0, but we use
+ * one internally because it simplifies things.
+ */
+ newBufObj = ctx->Array.NullBufferObj;
+ }
+ else {
+ /* non-default buffer object */
+ newBufObj = _mesa_lookup_bufferobj(ctx, buffer);
+ if (!newBufObj) {
+ /* if this is a new buffer object id, allocate a buffer object now */
+ ASSERT(ctx->Driver.NewBufferObject);
+ newBufObj = ctx->Driver.NewBufferObject(ctx, buffer, target);
+ if (!newBufObj) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindBufferARB");
+ return;
+ }
+ _mesa_save_buffer_object(ctx, newBufObj);
+ }
+ }
+
+ /* Make new binding */
+ *bindTarget = newBufObj;
+ newBufObj->RefCount++;
+
+ /* Pass BindBuffer call to device driver */
+ if (ctx->Driver.BindBuffer && newBufObj)
+ ctx->Driver.BindBuffer( ctx, target, newBufObj );
+
+ /* decr ref count on old buffer obj, delete if needed */
+ if (oldBufObj) {
+ oldBufObj->RefCount--;
+ assert(oldBufObj->RefCount >= 0);
+ if (oldBufObj->RefCount == 0) {
+ assert(oldBufObj->Name != 0);
+ ASSERT(ctx->Driver.DeleteBuffer);
+ ctx->Driver.DeleteBuffer( ctx, oldBufObj );
+ }
+ }
+}
+
+
+/**
+ * Update the default buffer objects in the given context to reference those
+ * specified in the shared state and release those referencing the old
+ * shared state.
+ */
+void
+_mesa_update_default_objects_buffer_objects(GLcontext *ctx)
+{
+ /* Bind the NullBufferObj to remove references to those
+ * in the shared context hash table.
+ */
+ bind_buffer_object( ctx, GL_ARRAY_BUFFER_ARB, 0);
+ bind_buffer_object( ctx, GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
+ bind_buffer_object( ctx, GL_PIXEL_PACK_BUFFER_ARB, 0);
+ bind_buffer_object( ctx, GL_PIXEL_UNPACK_BUFFER_ARB, 0);
+}
+
/**
* When we're about to read pixel data out of a PBO (via glDrawPixels,
@@ -470,6 +565,143 @@ _mesa_validate_pbo_access(GLuint dimensions,
/**
+ * If the source of glBitmap data is a PBO, check that we won't read out
+ * of buffer bounds, then map the buffer.
+ * If not sourcing from a PBO, just return the bitmap pointer.
+ * This is a helper function for (some) drivers.
+ * Return NULL if error.
+ * If non-null return, must call _mesa_unmap_bitmap_pbo() when done.
+ */
+const GLubyte *
+_mesa_map_bitmap_pbo(GLcontext *ctx,
+ const struct gl_pixelstore_attrib *unpack,
+ const GLubyte *bitmap)
+{
+ const GLubyte *buf;
+
+ if (unpack->BufferObj->Name) {
+ /* unpack from PBO */
+ buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
+ GL_READ_ONLY_ARB,
+ unpack->BufferObj);
+ if (!buf)
+ return NULL;
+
+ buf = ADD_POINTERS(buf, bitmap);
+ }
+ else {
+ /* unpack from normal memory */
+ buf = bitmap;
+ }
+
+ return buf;
+}
+
+
+/**
+ * Counterpart to _mesa_map_bitmap_pbo()
+ * This is a helper function for (some) drivers.
+ */
+void
+_mesa_unmap_bitmap_pbo(GLcontext *ctx,
+ const struct gl_pixelstore_attrib *unpack)
+{
+ if (unpack->BufferObj->Name) {
+ ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
+ unpack->BufferObj);
+ }
+}
+
+
+/**
+ * \sa _mesa_map_bitmap_pbo
+ */
+const GLvoid *
+_mesa_map_drawpix_pbo(GLcontext *ctx,
+ const struct gl_pixelstore_attrib *unpack,
+ const GLvoid *pixels)
+{
+ const GLvoid *buf;
+
+ if (unpack->BufferObj->Name) {
+ /* unpack from PBO */
+ buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
+ GL_READ_ONLY_ARB,
+ unpack->BufferObj);
+ if (!buf)
+ return NULL;
+
+ buf = ADD_POINTERS(buf, pixels);
+ }
+ else {
+ /* unpack from normal memory */
+ buf = pixels;
+ }
+
+ return buf;
+}
+
+
+/**
+ * \sa _mesa_unmap_bitmap_pbo
+ */
+void
+_mesa_unmap_drapix_pbo(GLcontext *ctx,
+ const struct gl_pixelstore_attrib *unpack)
+{
+ if (unpack->BufferObj->Name) {
+ ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
+ unpack->BufferObj);
+ }
+}
+
+
+/**
+ * If PBO is bound, map the buffer, return dest pointer in mapped buffer.
+ * Call _mesa_unmap_readpix_pbo() when finished
+ * \return NULL if error
+ */
+void *
+_mesa_map_readpix_pbo(GLcontext *ctx,
+ const struct gl_pixelstore_attrib *pack,
+ GLvoid *dest)
+{
+ void *buf;
+
+ if (pack->BufferObj->Name) {
+ /* pack into PBO */
+ buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
+ GL_WRITE_ONLY_ARB,
+ pack->BufferObj);
+ if (!buf)
+ return NULL;
+
+ buf = ADD_POINTERS(buf, dest);
+ }
+ else {
+ /* pack to normal memory */
+ buf = dest;
+ }
+
+ return buf;
+}
+
+
+/**
+ * Counterpart to _mesa_map_readpix_pbo()
+ */
+void
+_mesa_unmap_readpix_pbo(GLcontext *ctx,
+ const struct gl_pixelstore_attrib *pack)
+{
+ if (pack->BufferObj->Name) {
+ ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, pack->BufferObj);
+ }
+}
+
+
+
+/**
* Return the gl_buffer_object for the given ID.
* Always return NULL for ID 0.
*/
@@ -493,76 +725,9 @@ void GLAPIENTRY
_mesa_BindBufferARB(GLenum target, GLuint buffer)
{
GET_CURRENT_CONTEXT(ctx);
- struct gl_buffer_object *oldBufObj;
- struct gl_buffer_object *newBufObj = NULL;
- struct gl_buffer_object **bindTarget = NULL;
ASSERT_OUTSIDE_BEGIN_END(ctx);
- switch (target) {
- case GL_ARRAY_BUFFER_ARB:
- bindTarget = &ctx->Array.ArrayBufferObj;
- break;
- case GL_ELEMENT_ARRAY_BUFFER_ARB:
- bindTarget = &ctx->Array.ElementArrayBufferObj;
- break;
- case GL_PIXEL_PACK_BUFFER_EXT:
- bindTarget = &ctx->Pack.BufferObj;
- break;
- case GL_PIXEL_UNPACK_BUFFER_EXT:
- bindTarget = &ctx->Unpack.BufferObj;
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferARB(target)");
- return;
- }
-
- /* Get pointer to old buffer object (to be unbound) */
- oldBufObj = get_buffer(ctx, target);
- if (oldBufObj && oldBufObj->Name == buffer)
- return; /* rebinding the same buffer object- no change */
-
- /*
- * Get pointer to new buffer object (newBufObj)
- */
- if (buffer == 0) {
- /* The spec says there's not a buffer object named 0, but we use
- * one internally because it simplifies things.
- */
- newBufObj = ctx->Array.NullBufferObj;
- }
- else {
- /* non-default buffer object */
- newBufObj = _mesa_lookup_bufferobj(ctx, buffer);
- if (!newBufObj) {
- /* if this is a new buffer object id, allocate a buffer object now */
- ASSERT(ctx->Driver.NewBufferObject);
- newBufObj = ctx->Driver.NewBufferObject(ctx, buffer, target);
- if (!newBufObj) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindBufferARB");
- return;
- }
- _mesa_save_buffer_object(ctx, newBufObj);
- }
- }
-
- /* Make new binding */
- *bindTarget = newBufObj;
- newBufObj->RefCount++;
-
- /* Pass BindBuffer call to device driver */
- if (ctx->Driver.BindBuffer && newBufObj)
- ctx->Driver.BindBuffer( ctx, target, newBufObj );
-
- /* decr ref count on old buffer obj, delete if needed */
- if (oldBufObj) {
- oldBufObj->RefCount--;
- assert(oldBufObj->RefCount >= 0);
- if (oldBufObj->RefCount == 0) {
- assert(oldBufObj->Name != 0);
- ASSERT(ctx->Driver.DeleteBuffer);
- ctx->Driver.DeleteBuffer( ctx, oldBufObj );
- }
- }
+ bind_buffer_object(ctx, target, buffer);
}
@@ -658,9 +823,9 @@ _mesa_DeleteBuffersARB(GLsizei n, const GLuint *ids)
_mesa_BindBufferARB( GL_PIXEL_UNPACK_BUFFER_EXT, 0 );
}
- /* The ID is immediately freed for re-use */
- _mesa_remove_buffer_object(ctx, bufObj);
- _mesa_unbind_buffer_object(ctx, bufObj);
+ /* The ID is immediately freed for re-use */
+ _mesa_remove_buffer_object(ctx, bufObj);
+ _mesa_unbind_buffer_object(ctx, bufObj);
}
}
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