1 /* 2 * Copyright 2012 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 */ 23 24 #include "intel_batchbuffer.h" 25 #include "intel_fbo.h" 26 #include "brw_context.h" 27 #include "brw_defines.h" 28 #include "brw_state.h" 29 #include "main/stencil.h" 30 31 static void 32 gen8_upload_wm_depth_stencil(struct brw_context *brw) 33 { 34 struct gl_context *ctx = &brw->ctx; 35 uint32_t dw1 = 0, dw2 = 0, dw3 = 0; 36 37 /* _NEW_BUFFERS */ 38 struct intel_renderbuffer *depth_irb = 39 intel_get_renderbuffer(ctx->DrawBuffer, BUFFER_DEPTH); 40 41 struct gl_stencil_attrib *stencil = &ctx->Stencil; 42 43 /* _NEW_STENCIL | _NEW_BUFFERS */ 44 if (stencil->_Enabled) { 45 #define FUNC intel_translate_compare_func 46 #define OP intel_translate_stencil_op 47 48 dw1 |= 49 GEN8_WM_DS_STENCIL_TEST_ENABLE | 50 FUNC(stencil->Function[0]) << GEN8_WM_DS_STENCIL_FUNC_SHIFT | 51 OP(stencil->FailFunc[0]) << GEN8_WM_DS_STENCIL_FAIL_OP_SHIFT | 52 OP(stencil->ZFailFunc[0]) << GEN8_WM_DS_Z_FAIL_OP_SHIFT | 53 OP(stencil->ZPassFunc[0]) << GEN8_WM_DS_Z_PASS_OP_SHIFT; 54 55 if (stencil->_WriteEnabled) 56 dw1 |= GEN8_WM_DS_STENCIL_BUFFER_WRITE_ENABLE; 57 58 dw2 |= 59 SET_FIELD(stencil->WriteMask[0] & 0xff, GEN8_WM_DS_STENCIL_WRITE_MASK) | 60 SET_FIELD(stencil->ValueMask[0] & 0xff, GEN8_WM_DS_STENCIL_TEST_MASK); 61 62 if (stencil->_TestTwoSide) { 63 const int b = stencil->_BackFace; 64 65 dw1 |= 66 GEN8_WM_DS_DOUBLE_SIDED_STENCIL_ENABLE | 67 FUNC(stencil->Function[b]) << GEN8_WM_DS_BF_STENCIL_FUNC_SHIFT | 68 OP(stencil->FailFunc[b]) << GEN8_WM_DS_BF_STENCIL_FAIL_OP_SHIFT | 69 OP(stencil->ZFailFunc[b]) << GEN8_WM_DS_BF_Z_FAIL_OP_SHIFT | 70 OP(stencil->ZPassFunc[b]) << GEN8_WM_DS_BF_Z_PASS_OP_SHIFT; 71 72 dw2 |= SET_FIELD(stencil->WriteMask[b] & 0xff, 73 GEN8_WM_DS_BF_STENCIL_WRITE_MASK) | 74 SET_FIELD(stencil->ValueMask[b] & 0xff, 75 GEN8_WM_DS_BF_STENCIL_TEST_MASK); 76 } 77 78 if (brw->gen >= 9) { 79 int stencil_ref = _mesa_get_stencil_ref(ctx, 0); 80 int backface_ref = _mesa_get_stencil_ref(ctx, ctx->Stencil._BackFace); 81 82 dw3 = SET_FIELD(stencil_ref, GEN9_WM_DS_STENCIL_REF) | 83 SET_FIELD(backface_ref, GEN9_WM_DS_BF_STENCIL_REF); 84 } 85 } 86 87 /* _NEW_DEPTH */ 88 if (ctx->Depth.Test && depth_irb) { 89 dw1 |= 90 GEN8_WM_DS_DEPTH_TEST_ENABLE | 91 FUNC(ctx->Depth.Func) << GEN8_WM_DS_DEPTH_FUNC_SHIFT; 92 93 if (brw_depth_writes_enabled(brw)) 94 dw1 |= GEN8_WM_DS_DEPTH_BUFFER_WRITE_ENABLE; 95 } 96 97 int pkt_len = brw->gen >= 9 ? 4 : 3; 98 99 BEGIN_BATCH(pkt_len); 100 OUT_BATCH(_3DSTATE_WM_DEPTH_STENCIL << 16 | (pkt_len - 2)); 101 OUT_BATCH(dw1); 102 OUT_BATCH(dw2); 103 if (pkt_len > 3) { 104 OUT_BATCH(dw3); 105 } 106 ADVANCE_BATCH(); 107 } 108 109 const struct brw_tracked_state gen8_wm_depth_stencil = { 110 .dirty = { 111 .mesa = _NEW_BUFFERS | 112 _NEW_DEPTH | 113 _NEW_STENCIL, 114 .brw = BRW_NEW_BLORP | 115 BRW_NEW_CONTEXT, 116 }, 117 .emit = gen8_upload_wm_depth_stencil, 118 }; 119
