diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/gen6_clip_state.c')
-rw-r--r-- | src/mesa/drivers/dri/i965/gen6_clip_state.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/gen6_clip_state.c b/src/mesa/drivers/dri/i965/gen6_clip_state.c new file mode 100644 index 0000000000..06f8145e32 --- /dev/null +++ b/src/mesa/drivers/dri/i965/gen6_clip_state.c @@ -0,0 +1,75 @@ +/* + * Copyright © 2009 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + * + * Authors: + * Eric Anholt <eric@anholt.net> + * + */ + +#include "brw_context.h" +#include "brw_state.h" +#include "brw_defines.h" +#include "intel_batchbuffer.h" + +static void +upload_clip_state(struct brw_context *brw) +{ + struct intel_context *intel = &brw->intel; + GLcontext *ctx = &intel->ctx; + uint32_t depth_clamp = 0; + uint32_t provoking; + + if (!ctx->Transform.DepthClamp) + depth_clamp = GEN6_CLIP_Z_TEST; + + if (ctx->Light.ProvokingVertex == GL_FIRST_VERTEX_CONVENTION) { + provoking = 0; + } else { + provoking = + (2 << GEN6_CLIP_TRI_PROVOKE_SHIFT) | + (2 << GEN6_CLIP_TRIFAN_PROVOKE_SHIFT) | + (1 << GEN6_CLIP_LINE_PROVOKE_SHIFT); + } + + BEGIN_BATCH(4); + OUT_BATCH(CMD_3D_CLIP_STATE << 16 | (4 - 2)); + OUT_BATCH(GEN6_CLIP_STATISTICS_ENABLE); + OUT_BATCH(GEN6_CLIP_ENABLE | + GEN6_CLIP_API_OGL | + GEN6_CLIP_MODE_REJECT_ALL | /* XXX: debug: get VS working */ + GEN6_CLIP_XY_TEST | + depth_clamp | + provoking); + OUT_BATCH(0); + ADVANCE_BATCH(); + + intel_batchbuffer_emit_mi_flush(intel->batch); +} + +const struct brw_tracked_state gen6_clip_state = { + .dirty = { + .mesa = _NEW_TRANSFORM, + .brw = BRW_NEW_CONTEXT, + .cache = 0 + }, + .emit = upload_clip_state, +}; |