| 0,0 → 1,108 |
|---|
| /* |
| * 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 "brw_util.h" |
| #include "intel_batchbuffer.h" |
| #include "main/fbobject.h" |
| |
| static void |
| upload_clip_state(struct brw_context *brw) |
| { |
| struct gl_context *ctx = &brw->ctx; |
| uint32_t dw1 = brw->meta_in_progress ? 0 : GEN6_CLIP_STATISTICS_ENABLE; |
| uint32_t dw2 = 0; |
| |
| /* _NEW_BUFFERS */ |
| struct gl_framebuffer *fb = ctx->DrawBuffer; |
| |
| /* CACHE_NEW_WM_PROG */ |
| if (brw->wm.prog_data->barycentric_interp_modes & |
| BRW_WM_NONPERSPECTIVE_BARYCENTRIC_BITS) { |
| dw2 |= GEN6_CLIP_NON_PERSPECTIVE_BARYCENTRIC_ENABLE; |
| } |
| |
| if (!ctx->Transform.DepthClamp) |
| dw2 |= GEN6_CLIP_Z_TEST; |
| |
| /* _NEW_LIGHT */ |
| if (ctx->Light.ProvokingVertex == GL_FIRST_VERTEX_CONVENTION) { |
| dw2 |= |
| (0 << GEN6_CLIP_TRI_PROVOKE_SHIFT) | |
| (1 << GEN6_CLIP_TRIFAN_PROVOKE_SHIFT) | |
| (0 << GEN6_CLIP_LINE_PROVOKE_SHIFT); |
| } else { |
| dw2 |= |
| (2 << GEN6_CLIP_TRI_PROVOKE_SHIFT) | |
| (2 << GEN6_CLIP_TRIFAN_PROVOKE_SHIFT) | |
| (1 << GEN6_CLIP_LINE_PROVOKE_SHIFT); |
| } |
| |
| /* _NEW_TRANSFORM */ |
| dw2 |= (ctx->Transform.ClipPlanesEnabled << |
| GEN6_USER_CLIP_CLIP_DISTANCES_SHIFT); |
| |
| if (ctx->Viewport.X == 0 && |
| ctx->Viewport.Y == 0 && |
| ctx->Viewport.Width == fb->Width && |
| ctx->Viewport.Height == fb->Height) { |
| dw2 |= GEN6_CLIP_GB_TEST; |
| } |
| |
| /* BRW_NEW_RASTERIZER_DISCARD */ |
| if (ctx->RasterDiscard) { |
| dw2 |= GEN6_CLIP_MODE_REJECT_ALL; |
| perf_debug("Rasterizer discard is currently implemented via the clipper; " |
| "having the GS not write primitives would likely be faster."); |
| } |
| |
| BEGIN_BATCH(4); |
| OUT_BATCH(_3DSTATE_CLIP << 16 | (4 - 2)); |
| OUT_BATCH(dw1); |
| OUT_BATCH(GEN6_CLIP_ENABLE | |
| GEN6_CLIP_API_OGL | |
| GEN6_CLIP_MODE_NORMAL | |
| GEN6_CLIP_XY_TEST | |
| dw2); |
| OUT_BATCH(U_FIXED(0.125, 3) << GEN6_CLIP_MIN_POINT_WIDTH_SHIFT | |
| U_FIXED(255.875, 3) << GEN6_CLIP_MAX_POINT_WIDTH_SHIFT | |
| GEN6_CLIP_FORCE_ZERO_RTAINDEX); |
| ADVANCE_BATCH(); |
| } |
| |
| const struct brw_tracked_state gen6_clip_state = { |
| .dirty = { |
| .mesa = _NEW_TRANSFORM | _NEW_LIGHT | _NEW_BUFFERS, |
| .brw = BRW_NEW_CONTEXT | |
| BRW_NEW_META_IN_PROGRESS | |
| BRW_NEW_RASTERIZER_DISCARD, |
| .cache = CACHE_NEW_WM_PROG |
| }, |
| .emit = upload_clip_state, |
| }; |