diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_context.c')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_context.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c index 5e9cb1f8b2..d8cad54667 100644 --- a/src/mesa/drivers/dri/i965/brw_context.c +++ b/src/mesa/drivers/dri/i965/brw_context.c @@ -178,6 +178,26 @@ brwCreateContext(int api, ctx->Const.MaxTextureMaxAnisotropy = 16.0; + /* Hardware only supports a limited number of transform feedback buffers. + * So we need to override the Mesa default (which is based only on software + * limits). + */ + ctx->Const.MaxTransformFeedbackSeparateAttribs = BRW_MAX_SOL_BUFFERS; + + /* On Gen6, in the worst case, we use up one binding table entry per + * transform feedback component (see comments above the definition of + * BRW_MAX_SOL_BINDINGS, in brw_context.h), so we need to advertise a value + * for MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS equal to + * BRW_MAX_SOL_BINDINGS. + * + * In "separate components" mode, we need to divide this value by + * BRW_MAX_SOL_BUFFERS, so that the total number of binding table entries + * used up by all buffers will not exceed BRW_MAX_SOL_BINDINGS. + */ + ctx->Const.MaxTransformFeedbackInterleavedComponents = BRW_MAX_SOL_BINDINGS; + ctx->Const.MaxTransformFeedbackSeparateComponents = + BRW_MAX_SOL_BINDINGS / BRW_MAX_SOL_BUFFERS; + /* if conformance mode is set, swrast can handle any size AA point */ ctx->Const.MaxPointSizeAA = 255.0; |