mesa: Move glBindBufferBase and glBindBufferRange() to bufferobj.

The rest of the TFB implementation remains in transformfeedback.c, and
this will be shared with UBOs.

v2: Move the size/offset checks shared with UBOs to common code as
    well. (Kenneth's review)

Reviewed-by: Brian Paul <[email protected]> (v1)
Reviewed-by: Kenneth Graunke <[email protected]>

4 files changed, 103 insertions, 59 deletions

diff --git a/src/mesa/main/bufferobj.c b/src/mesa/main/bufferobj.c
index 11af09998ac..2e34744e8b8 100644
--- a/src/mesa/main/bufferobj.c
+++ b/src/mesa/main/bufferobj.c
@@ -1994,6 +1994,78 @@ _mesa_GetObjectParameterivAPPLE(GLenum objectType, GLuint name, GLenum pname,
 
 #endif /* FEATURE_APPLE_object_purgeable */
 
+
+void GLAPIENTRY
+_mesa_BindBufferRange(GLenum target, GLuint index,
+                      GLuint buffer, GLintptr offset, GLsizeiptr size)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct gl_buffer_object *bufObj;
+
+   if (buffer == 0) {
+      bufObj = ctx->Shared->NullBufferObj;
+   } else {
+      bufObj = _mesa_lookup_bufferobj(ctx, buffer);
+   }
+
+   if (!bufObj) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glBindBufferRange(invalid buffer=%u)", buffer);
+      return;
+   }
+
+   if (size <= 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferRange(size=%d)",
+		  (int) size);
+      return;
+   }
+
+   if (offset + size > bufObj->Size) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glBindBufferRange(offset + size %d > buffer size %d)",
+		  (int) (offset + size), (int) (bufObj->Size));
+      return;
+   }
+
+   switch (target) {
+   case GL_TRANSFORM_FEEDBACK_BUFFER:
+      _mesa_bind_buffer_range_transform_feedback(ctx, index, bufObj,
+						 offset, size);
+      return;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferRange(target)");
+      return;
+   }
+}
+
+void GLAPIENTRY
+_mesa_BindBufferBase(GLenum target, GLuint index, GLuint buffer)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct gl_buffer_object *bufObj;
+
+   if (buffer == 0) {
+      bufObj = ctx->Shared->NullBufferObj;
+   } else {
+      bufObj = _mesa_lookup_bufferobj(ctx, buffer);
+   }
+
+   if (!bufObj) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glBindBufferBase(invalid buffer=%u)", buffer);
+      return;
+   }
+
+   switch (target) {
+   case GL_TRANSFORM_FEEDBACK_BUFFER:
+      _mesa_bind_buffer_base_transform_feedback(ctx, index, bufObj);
+      return;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferBase(target)");
+      return;
+   }
+}
+
 void
 _mesa_init_bufferobj_dispatch(struct _glapi_table *disp)
 {
@@ -2008,4 +2080,6 @@ _mesa_init_bufferobj_dispatch(struct _glapi_table *disp)
    SET_IsBufferARB(disp, _mesa_IsBufferARB);
    SET_MapBufferARB(disp, _mesa_MapBufferARB);
    SET_UnmapBufferARB(disp, _mesa_UnmapBufferARB);
+   SET_BindBufferRangeEXT(disp, _mesa_BindBufferRange);
+   SET_BindBufferBaseEXT(disp, _mesa_BindBufferBase);
 }
diff --git a/src/mesa/main/bufferobj.h b/src/mesa/main/bufferobj.h
index 819ca2573ef..e1d0f7a97e8 100644
--- a/src/mesa/main/bufferobj.h
+++ b/src/mesa/main/bufferobj.h
@@ -159,6 +159,13 @@ extern void GLAPIENTRY
 _mesa_GetObjectParameterivAPPLE(GLenum objectType, GLuint name, GLenum pname, GLint* params);
 #endif
 
+void GLAPIENTRY
+_mesa_BindBufferBase(GLenum target, GLuint index, GLuint buffer);
+
+void GLAPIENTRY
+_mesa_BindBufferRange(GLenum target, GLuint index,
+                      GLuint buffer, GLintptr offset, GLsizeiptr size);
+
 extern void
 _mesa_init_bufferobj_dispatch(struct _glapi_table *disp);
 
diff --git a/src/mesa/main/transformfeedback.c b/src/mesa/main/transformfeedback.c
index 1bd76d130fd..84c40918504 100644
--- a/src/mesa/main/transformfeedback.c
+++ b/src/mesa/main/transformfeedback.c
@@ -291,8 +291,6 @@ _mesa_init_transform_feedback_dispatch(struct _glapi_table *disp)
    /* EXT_transform_feedback */
    SET_BeginTransformFeedbackEXT(disp, _mesa_BeginTransformFeedback);
    SET_EndTransformFeedbackEXT(disp, _mesa_EndTransformFeedback);
-   SET_BindBufferRangeEXT(disp, _mesa_BindBufferRange);
-   SET_BindBufferBaseEXT(disp, _mesa_BindBufferBase);
    SET_BindBufferOffsetEXT(disp, _mesa_BindBufferOffsetEXT);
    SET_TransformFeedbackVaryingsEXT(disp, _mesa_TransformFeedbackVaryings);
    SET_GetTransformFeedbackVaryingEXT(disp, _mesa_GetTransformFeedbackVarying);
@@ -431,18 +429,14 @@ bind_buffer_range(struct gl_context *ctx, GLuint index,
  * Specify a buffer object to receive vertex shader results.  Plus,
  * specify the starting offset to place the results, and max size.
  */
-void GLAPIENTRY
-_mesa_BindBufferRange(GLenum target, GLuint index,
-                      GLuint buffer, GLintptr offset, GLsizeiptr size)
+void
+_mesa_bind_buffer_range_transform_feedback(struct gl_context *ctx,
+					   GLuint index,
+					   struct gl_buffer_object *bufObj,
+					   GLintptr offset,
+					   GLsizeiptr size)
 {
    struct gl_transform_feedback_object *obj;
-   struct gl_buffer_object *bufObj;
-   GET_CURRENT_CONTEXT(ctx);
-
-   if (target != GL_TRANSFORM_FEEDBACK_BUFFER) {
-      _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferRange(target)");
-      return;
-   }
 
    obj = ctx->TransformFeedback.CurrentObject;
 
@@ -457,8 +451,8 @@ _mesa_BindBufferRange(GLenum target, GLuint index,
       return;
    }
 
-   if ((size <= 0) || (size & 0x3)) {
-      /* must be positive and multiple of four */
+   if (size & 0x3) {
+      /* must a multiple of four */
       _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferRange(size=%d)", (int) size);
       return;
    }  
@@ -470,25 +464,6 @@ _mesa_BindBufferRange(GLenum target, GLuint index,
       return;
    }  
 
-   if (buffer == 0) {
-      bufObj = ctx->Shared->NullBufferObj;
-   } else {
-      bufObj = _mesa_lookup_bufferobj(ctx, buffer);
-   }
-
-   if (!bufObj) {
-      _mesa_error(ctx, GL_INVALID_OPERATION,
-                  "glBindBufferRange(invalid buffer=%u)", buffer);
-      return;
-   }
-
-   if (offset + size > bufObj->Size) {
-      _mesa_error(ctx, GL_INVALID_VALUE,
-                  "glBindBufferRange(offset + size %d > buffer size %d)",
-		  (int) (offset + size), (int) (bufObj->Size));
-      return;
-   }  
-
    bind_buffer_range(ctx, index, bufObj, offset, size);
 }
 
@@ -497,18 +472,13 @@ _mesa_BindBufferRange(GLenum target, GLuint index,
  * Specify a buffer object to receive vertex shader results.
  * As above, but start at offset = 0.
  */
-void GLAPIENTRY
-_mesa_BindBufferBase(GLenum target, GLuint index, GLuint buffer)
+void
+_mesa_bind_buffer_base_transform_feedback(struct gl_context *ctx,
+					  GLuint index,
+					  struct gl_buffer_object *bufObj)
 {
    struct gl_transform_feedback_object *obj;
-   struct gl_buffer_object *bufObj;
    GLsizeiptr size;
-   GET_CURRENT_CONTEXT(ctx);
-
-   if (target != GL_TRANSFORM_FEEDBACK_BUFFER) {
-      _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferBase(target)");
-      return;
-   }
 
    obj = ctx->TransformFeedback.CurrentObject;
 
@@ -523,18 +493,6 @@ _mesa_BindBufferBase(GLenum target, GLuint index, GLuint buffer)
       return;
    }
 
-   if (buffer == 0) {
-      bufObj = ctx->Shared->NullBufferObj;
-   } else {
-      bufObj = _mesa_lookup_bufferobj(ctx, buffer);
-   }
-
-   if (!bufObj) {
-      _mesa_error(ctx, GL_INVALID_OPERATION,
-                  "glBindBufferBase(invalid buffer=%u)", buffer);
-      return;
-   }
-
    /* default size is the buffer size rounded down to nearest
     * multiple of four.
     */
diff --git a/src/mesa/main/transformfeedback.h b/src/mesa/main/transformfeedback.h
index 7d63de01744..85f4cbc77ee 100644
--- a/src/mesa/main/transformfeedback.h
+++ b/src/mesa/main/transformfeedback.h
@@ -60,12 +60,17 @@ _mesa_BeginTransformFeedback(GLenum mode);
 extern void GLAPIENTRY
 _mesa_EndTransformFeedback(void);
 
-extern void GLAPIENTRY
-_mesa_BindBufferRange(GLenum target, GLuint index,
-                      GLuint buffer, GLintptr offset, GLsizeiptr size);
+extern void
+_mesa_bind_buffer_range_transform_feedback(struct gl_context *ctx,
+					   GLuint index,
+					   struct gl_buffer_object *bufObj,
+					   GLintptr offset,
+					   GLsizeiptr size);
 
-extern void GLAPIENTRY
-_mesa_BindBufferBase(GLenum target, GLuint index, GLuint buffer);
+extern void
+_mesa_bind_buffer_base_transform_feedback(struct gl_context *ctx,
+					  GLuint index,
+					  struct gl_buffer_object *bufObj);
 
 extern void GLAPIENTRY
 _mesa_BindBufferOffsetEXT(GLenum target, GLuint index, GLuint buffer,