1 /* 2 * Copyright 2011 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 "brw_context.h" 25 #include "brw_state.h" 26 #include "brw_defines.h" 27 #include "intel_batchbuffer.h" 28 #include "main/fbobject.h" 29 #include "main/framebuffer.h" 30 #include "main/viewport.h" 31 32 static void 33 gen7_upload_sf_clip_viewport(struct brw_context *brw) 34 { 35 struct gl_context *ctx = &brw->ctx; 36 const struct gen_device_info *devinfo = &brw->screen->devinfo; 37 GLfloat y_scale, y_bias; 38 struct gen7_sf_clip_viewport *vp; 39 40 /* BRW_NEW_VIEWPORT_COUNT */ 41 const unsigned viewport_count = brw->clip.viewport_count; 42 43 /* _NEW_BUFFERS */ 44 struct gl_framebuffer *fb = ctx->DrawBuffer; 45 const bool render_to_fbo = _mesa_is_user_fbo(fb); 46 const uint32_t fb_width = _mesa_geometric_width(ctx->DrawBuffer); 47 const uint32_t fb_height = _mesa_geometric_height(ctx->DrawBuffer); 48 49 vp = brw_state_batch(brw, AUB_TRACE_SF_VP_STATE, 50 sizeof(*vp) * viewport_count, 64, 51 &brw->sf.vp_offset); 52 /* Also assign to clip.vp_offset in case something uses it. */ 53 brw->clip.vp_offset = brw->sf.vp_offset; 54 55 /* _NEW_BUFFERS */ 56 if (render_to_fbo) { 57 y_scale = 1.0; 58 y_bias = 0.0; 59 } else { 60 y_scale = -1.0; 61 y_bias = (float)fb_height; 62 } 63 64 for (unsigned i = 0; i < viewport_count; i++) { 65 float scale[3], translate[3]; 66 _mesa_get_viewport_xform(ctx, i, scale, translate); 67 68 /* _NEW_VIEWPORT */ 69 vp[i].viewport.m00 = scale[0]; 70 vp[i].viewport.m11 = scale[1] * y_scale; 71 vp[i].viewport.m22 = scale[2]; 72 vp[i].viewport.m30 = translate[0]; 73 vp[i].viewport.m31 = translate[1] * y_scale + y_bias; 74 vp[i].viewport.m32 = translate[2]; 75 76 brw_calculate_guardband_size(devinfo, fb_width, fb_height, 77 vp[i].viewport.m00, vp[i].viewport.m11, 78 vp[i].viewport.m30, vp[i].viewport.m31, 79 &vp[i].guardband.xmin, 80 &vp[i].guardband.xmax, 81 &vp[i].guardband.ymin, 82 &vp[i].guardband.ymax); 83 } 84 85 BEGIN_BATCH(2); 86 OUT_BATCH(_3DSTATE_VIEWPORT_STATE_POINTERS_SF_CL << 16 | (2 - 2)); 87 OUT_BATCH(brw->sf.vp_offset); 88 ADVANCE_BATCH(); 89 } 90 91 const struct brw_tracked_state gen7_sf_clip_viewport = { 92 .dirty = { 93 .mesa = _NEW_BUFFERS | 94 _NEW_VIEWPORT, 95 .brw = BRW_NEW_BATCH | 96 BRW_NEW_BLORP | 97 BRW_NEW_VIEWPORT_COUNT, 98 }, 99 .emit = gen7_upload_sf_clip_viewport, 100 }; 101
