/* * Copyright © 2011 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. */ #include "brw_context.h" #include "brw_state.h" #include "brw_defines.h" #include "intel_batchbuffer.h" static void prepare_sf_clip_viewport(struct brw_context *brw) { struct gl_context *ctx = &brw->intel.ctx; const GLfloat depth_scale = 1.0F / ctx->DrawBuffer->_DepthMaxF; GLfloat y_scale, y_bias; const bool render_to_fbo = (ctx->DrawBuffer->Name != 0); const GLfloat *v = ctx->Viewport._WindowMap.m; struct gen7_sf_clip_viewport *vp; vp = brw_state_batch(brw, AUB_TRACE_SF_VP_STATE, sizeof(vp), 64, &brw->sf.vp_offset); /* Also assign to clip.vp_offset in case something uses it. */ brw->clip.vp_offset = brw->sf.vp_offset; /* Disable guardband clipping (see gen6_viewport_state.c for rationale). */ vp->guardband.xmin = -1.0; vp->guardband.xmax = 1.0; vp->guardband.ymin = -1.0; vp->guardband.ymax = 1.0; /* _NEW_BUFFERS */ if (render_to_fbo) { y_scale = 1.0; y_bias = 0; } else { y_scale = -1.0; y_bias = ctx->DrawBuffer->Height; } /* _NEW_VIEWPORT */ vp->viewport.m00 = v[MAT_SX]; vp->viewport.m11 = v[MAT_SY] * y_scale; vp->viewport.m22 = v[MAT_SZ] * depth_scale; vp->viewport.m30 = v[MAT_TX]; vp->viewport.m31 = v[MAT_TY] * y_scale + y_bias; vp->viewport.m32 = v[MAT_TZ] * depth_scale; } static void upload_sf_clip_viewport_state_pointer(struct brw_context *brw) { struct intel_context *intel = &brw->intel; BEGIN_BATCH(2); OUT_BATCH(_3DSTATE_VIEWPORT_STATE_POINTERS_SF_CL << 16 | (2 - 2)); OUT_BATCH(brw->sf.vp_offset); ADVANCE_BATCH(); } const struct brw_tracked_state gen7_sf_clip_viewport = { .dirty = { .mesa = _NEW_VIEWPORT | _NEW_BUFFERS, .brw = BRW_NEW_BATCH, .cache = 0, }, .prepare = prepare_sf_clip_viewport, .emit = upload_sf_clip_viewport_state_pointer, }; /* ----------------------------------------------------- */ static void upload_cc_viewport_state_pointer(struct brw_context *brw) { struct intel_context *intel = &brw->intel; BEGIN_BATCH(2); OUT_BATCH(_3DSTATE_VIEWPORT_STATE_POINTERS_CC << 16 | (2 - 2)); OUT_BATCH(brw->cc.vp_offset); ADVANCE_BATCH(); } const struct brw_tracked_state gen7_cc_viewport_state_pointer = { .dirty = { .mesa = 0, .brw = BRW_NEW_BATCH, .cache = CACHE_NEW_CC_VP }, .emit = upload_cc_viewport_state_pointer, };