| /* |
| * 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 "main/mtypes.h" |
| #include "main/blend.h" |
| #include "main/samplerobj.h" |
| #include "main/texformat.h" |
| #include "main/teximage.h" |
| #include "program/prog_parameter.h" |
| #include "program/prog_instruction.h" |
| |
| #include "intel_mipmap_tree.h" |
| #include "intel_batchbuffer.h" |
| #include "intel_tex.h" |
| #include "intel_fbo.h" |
| #include "intel_buffer_objects.h" |
| |
| #include "brw_context.h" |
| #include "brw_state.h" |
| #include "brw_defines.h" |
| #include "brw_wm.h" |
| |
| void |
| gen7_check_surface_setup(uint32_t *surf, bool is_render_target) |
| { |
| unsigned num_multisamples = surf[4] & INTEL_MASK(5, 3); |
| unsigned multisampled_surface_storage_format = surf[4] & (1 << 6); |
| unsigned surface_array_spacing = surf[0] & (1 << 10); |
| bool is_multisampled = num_multisamples != GEN7_SURFACE_MULTISAMPLECOUNT_1; |
| |
| (void) surface_array_spacing; |
| |
| /* From the Ivybridge PRM, Volume 4 Part 1, page 66 (RENDER_SURFACE_STATE |
| * dword 0 bit 10 "Surface Array Spacing" Programming Notes): |
| * |
| * If Multisampled Surface Storage Format is MSFMT_MSS and Number of |
| * Multisamples is not MULTISAMPLECOUNT_1, this field must be set to |
| * ARYSPC_LOD0. |
| */ |
| if (multisampled_surface_storage_format == GEN7_SURFACE_MSFMT_MSS |
| && is_multisampled) |
| assert(surface_array_spacing == GEN7_SURFACE_ARYSPC_LOD0); |
| |
| /* From the Ivybridge PRM, Volume 4 Part 1, page 72 (RENDER_SURFACE_STATE |
| * dword 4 bit 6 "Multisampled Surface Storage" Programming Notes): |
| * |
| * All multisampled render target surfaces must have this field set to |
| * MSFMT_MSS. |
| * |
| * But also: |
| * |
| * This field is ignored if Number of Multisamples is MULTISAMPLECOUNT_1. |
| */ |
| if (is_render_target && is_multisampled) { |
| assert(multisampled_surface_storage_format == GEN7_SURFACE_MSFMT_MSS); |
| } |
| |
| /* From the Ivybridge PRM, Volume 4 Part 1, page 72 (RENDER_SURFACE_STATE |
| * dword 4 bit 6 "Multisampled Surface Storage Format" Errata): |
| * |
| * If the surface’s Number of Multisamples is MULTISAMPLECOUNT_8, Width |
| * is >= 8192 (meaning the actual surface width is >= 8193 pixels), this |
| * field must be set to MSFMT_MSS. |
| */ |
| uint32_t width = GET_FIELD(surf[2], GEN7_SURFACE_WIDTH) + 1; |
| if (num_multisamples == GEN7_SURFACE_MULTISAMPLECOUNT_8 && width >= 8193) { |
| assert(multisampled_surface_storage_format == GEN7_SURFACE_MSFMT_MSS); |
| } |
| |
| /* From the Ivybridge PRM, Volume 4 Part 1, page 72 (RENDER_SURFACE_STATE |
| * dword 4 bit 6 "Multisampled Surface Storage Format" Errata): |
| * |
| * If the surface’s Number of Multisamples is MULTISAMPLECOUNT_8, |
| * ((Depth+1) * (Height+1)) is > 4,194,304, OR if the surface’s Number of |
| * Multisamples is MULTISAMPLECOUNT_4, ((Depth+1) * (Height+1)) is > |
| * 8,388,608, this field must be set to MSFMT_DEPTH_STENCIL.This field |
| * must be set to MSFMT_DEPTH_STENCIL if Surface Format is one of the |
| * following: I24X8_UNORM, L24X8_UNORM, A24X8_UNORM, or |
| * R24_UNORM_X8_TYPELESS. |
| * |
| * But also (from the Programming Notes): |
| * |
| * This field is ignored if Number of Multisamples is MULTISAMPLECOUNT_1. |
| */ |
| uint32_t depth = GET_FIELD(surf[3], BRW_SURFACE_DEPTH) + 1; |
| uint32_t height = GET_FIELD(surf[2], GEN7_SURFACE_HEIGHT) + 1; |
| if (num_multisamples == GEN7_SURFACE_MULTISAMPLECOUNT_8 && |
| depth * height > 4194304) { |
| assert(multisampled_surface_storage_format == |
| GEN7_SURFACE_MSFMT_DEPTH_STENCIL); |
| } |
| if (num_multisamples == GEN7_SURFACE_MULTISAMPLECOUNT_4 && |
| depth * height > 8388608) { |
| assert(multisampled_surface_storage_format == |
| GEN7_SURFACE_MSFMT_DEPTH_STENCIL); |
| } |
| if (is_multisampled) { |
| switch (GET_FIELD(surf[0], BRW_SURFACE_FORMAT)) { |
| case BRW_SURFACEFORMAT_I24X8_UNORM: |
| case BRW_SURFACEFORMAT_L24X8_UNORM: |
| case BRW_SURFACEFORMAT_A24X8_UNORM: |
| case BRW_SURFACEFORMAT_R24_UNORM_X8_TYPELESS: |
| assert(multisampled_surface_storage_format == |
| GEN7_SURFACE_MSFMT_DEPTH_STENCIL); |
| } |
| } |
| } |
| |
| /** |
| * Creates a null surface. |
| * |
| * This is used when the shader doesn't write to any color output. An FB |
| * write to target 0 will still be emitted, because that's how the thread is |
| * terminated (and computed depth is returned), so we need to have the |
| * hardware discard the target 0 color output.. |
| */ |
| static void |
| gen7_emit_null_surface_state(struct brw_context *brw, |
| unsigned width, |
| unsigned height, |
| unsigned samples, |
| uint32_t *out_offset) |
| { |
| /* From the Ivy bridge PRM, Vol4 Part1 p62 (Surface Type: Programming |
| * Notes): |
| * |
| * A null surface is used in instances where an actual surface is not |
| * bound. When a write message is generated to a null surface, no |
| * actual surface is written to. When a read message (including any |
| * sampling engine message) is generated to a null surface, the result |
| * is all zeros. Note that a null surface type is allowed to be used |
| * with all messages, even if it is not specificially indicated as |
| * supported. All of the remaining fields in surface state are ignored |
| * for null surfaces, with the following exceptions: Width, Height, |
| * Depth, LOD, and Render Target View Extent fields must match the |
| * depth buffer’s corresponding state for all render target surfaces, |
| * including null. |
| */ |
| uint32_t *surf = brw_state_batch(brw, AUB_TRACE_SURFACE_STATE, 8 * 4, 32, |
| out_offset); |
| memset(surf, 0, 8 * 4); |
| |
| /* From the Ivybridge PRM, Volume 4, Part 1, page 65, |
| * Tiled Surface: Programming Notes: |
| * "If Surface Type is SURFTYPE_NULL, this field must be TRUE." |
| */ |
| surf[0] = BRW_SURFACE_NULL << BRW_SURFACE_TYPE_SHIFT | |
| BRW_SURFACEFORMAT_B8G8R8A8_UNORM << BRW_SURFACE_FORMAT_SHIFT | |
| GEN7_SURFACE_TILING_Y; |
| |
| surf[2] = SET_FIELD(width - 1, GEN7_SURFACE_WIDTH) | |
| SET_FIELD(height - 1, GEN7_SURFACE_HEIGHT); |
| |
| gen7_check_surface_setup(surf, true /* is_render_target */); |
| } |
| |
| void |
| gen7_init_vtable_surface_functions(struct brw_context *brw) |
| { |
| brw->vtbl.update_renderbuffer_surface = brw_update_renderbuffer_surface; |
| brw->vtbl.emit_null_surface_state = gen7_emit_null_surface_state; |
| } |
