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mesa: add bind_buffer_offset() helper

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Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
This commit is contained in:
Samuel Pitoiset 2017-08-24 11:34:38 +02:00
parent 83690d4590
commit dc058f850c
1 changed files with 23 additions and 13 deletions
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36
src/mesa/main/transformfeedback.c
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@ -779,12 +779,33 @@ _mesa_TransformFeedbackBufferRange(GLuint xfb, GLuint index, GLuint buffer,
* offset in the buffer to start placing results.
* This function is part of GL_EXT_transform_feedback, but not GL3.
*/
static ALWAYS_INLINE void
bind_buffer_offset(struct gl_context *ctx,
struct gl_transform_feedback_object *obj, GLuint index,
GLuint buffer, GLintptr offset, bool no_error)
{
struct gl_buffer_object *bufObj;
if (buffer == 0) {
bufObj = ctx->Shared->NullBufferObj;
} else {
bufObj = _mesa_lookup_bufferobj(ctx, buffer);
if (!no_error && !bufObj) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glBindBufferOffsetEXT(invalid buffer=%u)", buffer);
return;
}
}
_mesa_bind_buffer_range_xfb(ctx, obj, index, bufObj, offset, 0);
}
void GLAPIENTRY
_mesa_BindBufferOffsetEXT(GLenum target, GLuint index, GLuint buffer,
GLintptr offset)
{
struct gl_transform_feedback_object *obj;
struct gl_buffer_object *bufObj;
GET_CURRENT_CONTEXT(ctx);
if (target != GL_TRANSFORM_FEEDBACK_BUFFER) {
@ -813,18 +834,7 @@ _mesa_BindBufferOffsetEXT(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,
"glBindBufferOffsetEXT(invalid buffer=%u)", buffer);
return;
}
}
_mesa_bind_buffer_range_xfb(ctx, obj, index, bufObj, offset, 0);
bind_buffer_offset(ctx, obj, index, buffer, offset, false);
}