diff options
| -rw-r--r-- | src/mesa/main/transformfeedback.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/mesa/main/transformfeedback.c b/src/mesa/main/transformfeedback.c index 6e93b3b49d1..02681c61583 100644 --- a/src/mesa/main/transformfeedback.c +++ b/src/mesa/main/transformfeedback.c @@ -347,8 +347,21 @@ _mesa_BeginTransformFeedback(GLenum mode) GET_CURRENT_CONTEXT(ctx); obj = ctx->TransformFeedback.CurrentObject; + + if (ctx->Shader.CurrentVertexProgram == NULL) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBeginTransformFeedback(no program active)"); + return; + } + info = &ctx->Shader.CurrentVertexProgram->LinkedTransformFeedback; + if (info->NumOutputs == 0) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBeginTransformFeedback(no varyings to record)"); + return; + } + switch (mode) { case GL_POINTS: case GL_LINES: @@ -581,6 +594,13 @@ _mesa_BindBufferOffsetEXT(GLenum target, GLuint index, GLuint buffer, return; } + if (offset & 0x3) { + /* must be multiple of four */ + _mesa_error(ctx, GL_INVALID_VALUE, + "glBindBufferOffsetEXT(offset=%d)", (int) offset); + return; + } + bufObj = _mesa_lookup_bufferobj(ctx, buffer); if (!bufObj) { _mesa_error(ctx, GL_INVALID_OPERATION, |