/* * 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/samplerobj.h" #include "program/prog_parameter.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" /** * Convert an swizzle enumeration (i.e. SWIZZLE_X) to one of the Gen7.5+ * "Shader Channel Select" enumerations (i.e. HSW_SCS_RED) */ static unsigned swizzle_to_scs(GLenum swizzle) { switch (swizzle) { case SWIZZLE_X: return HSW_SCS_RED; case SWIZZLE_Y: return HSW_SCS_GREEN; case SWIZZLE_Z: return HSW_SCS_BLUE; case SWIZZLE_W: return HSW_SCS_ALPHA; case SWIZZLE_ZERO: return HSW_SCS_ZERO; case SWIZZLE_ONE: return HSW_SCS_ONE; } assert(!"Should not get here: invalid swizzle mode"); return HSW_SCS_ZERO; } uint32_t gen7_surface_tiling_mode(uint32_t tiling) { switch (tiling) { case I915_TILING_X: return GEN7_SURFACE_TILING_X; case I915_TILING_Y: return GEN7_SURFACE_TILING_Y; default: return GEN7_SURFACE_TILING_NONE; } } uint32_t gen7_surface_msaa_bits(unsigned num_samples, enum intel_msaa_layout layout) { uint32_t ss4 = 0; if (num_samples > 4) ss4 |= GEN7_SURFACE_MULTISAMPLECOUNT_8; else if (num_samples > 1) ss4 |= GEN7_SURFACE_MULTISAMPLECOUNT_4; else ss4 |= GEN7_SURFACE_MULTISAMPLECOUNT_1; if (layout == INTEL_MSAA_LAYOUT_IMS) ss4 |= GEN7_SURFACE_MSFMT_DEPTH_STENCIL; else ss4 |= GEN7_SURFACE_MSFMT_MSS; return ss4; } void gen7_set_surface_mcs_info(struct brw_context *brw, uint32_t *surf, uint32_t surf_offset, const struct intel_mipmap_tree *mcs_mt, bool is_render_target) { /* From the Ivy Bridge PRM, Vol4 Part1 p76, "MCS Base Address": * * "The MCS surface must be stored as Tile Y." */ assert(mcs_mt->region->tiling == I915_TILING_Y); /* Compute the pitch in units of tiles. To do this we need to divide the * pitch in bytes by 128, since a single Y-tile is 128 bytes wide. */ unsigned pitch_bytes = mcs_mt->region->pitch * mcs_mt->cpp; unsigned pitch_tiles = pitch_bytes / 128; /* The upper 20 bits of surface state DWORD 6 are the upper 20 bits of the * GPU address of the MCS buffer; the lower 12 bits contain other control * information. Since buffer addresses are always on 4k boundaries (and * thus have their lower 12 bits zero), we can use an ordinary reloc to do * the necessary address translation. */ assert ((mcs_mt->region->bo->offset & 0xfff) == 0); surf[6] = GEN7_SURFACE_MCS_ENABLE | SET_FIELD(pitch_tiles - 1, GEN7_SURFACE_MCS_PITCH) | mcs_mt->region->bo->offset; drm_intel_bo_emit_reloc(brw->intel.batch.bo, surf_offset + 6 * 4, mcs_mt->region->bo, surf[6] & 0xfff, is_render_target ? I915_GEM_DOMAIN_RENDER : I915_GEM_DOMAIN_SAMPLER, is_render_target ? I915_GEM_DOMAIN_RENDER : 0); } 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 Graphics BSpec: vol5c Shared Functions [SNB+] > State > * SURFACE_STATE > SURFACE_STATE for most messages [DevIVB]: Surface Array * Spacing: * * 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 Graphics BSpec: vol5c Shared Functions [SNB+] > State > * SURFACE_STATE > SURFACE_STATE for most messages [DevIVB]: Multisampled * Surface Storage Format: * * 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 Graphics BSpec: vol5c Shared Functions [SNB+] > State > * SURFACE_STATE > SURFACE_STATE for most messages [DevIVB]: Multisampled * Surface Storage Format: * * 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 Graphics BSpec: vol5c Shared Functions [SNB+] > State > * SURFACE_STATE > SURFACE_STATE for most messages [DevIVB]: Multisampled * Surface Storage Format: * * 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: * * 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); } } } static void gen7_update_buffer_texture_surface(struct gl_context *ctx, unsigned unit, uint32_t *binding_table, unsigned surf_index) { struct brw_context *brw = brw_context(ctx); struct intel_context *intel = &brw->intel; struct gl_texture_object *tObj = ctx->Texture.Unit[unit]._Current; struct intel_buffer_object *intel_obj = intel_buffer_object(tObj->BufferObject); drm_intel_bo *bo = intel_obj ? intel_obj->buffer : NULL; gl_format format = tObj->_BufferObjectFormat; uint32_t *surf = brw_state_batch(brw, AUB_TRACE_SURFACE_STATE, 8 * 4, 32, &binding_table[surf_index]); memset(surf, 0, 8 * 4); uint32_t surface_format = brw_format_for_mesa_format(format); if (surface_format == 0 && format != MESA_FORMAT_RGBA_FLOAT32) { _mesa_problem(NULL, "bad format %s for texture buffer\n", _mesa_get_format_name(format)); } surf[0] = BRW_SURFACE_BUFFER << BRW_SURFACE_TYPE_SHIFT | surface_format << BRW_SURFACE_FORMAT_SHIFT | BRW_SURFACE_RC_READ_WRITE; if (bo) { surf[1] = bo->offset; /* reloc */ /* Emit relocation to surface contents. Section 5.1.1 of the gen4 * bspec ("Data Cache") says that the data cache does not exist as * a separate cache and is just the sampler cache. */ drm_intel_bo_emit_reloc(intel->batch.bo, binding_table[surf_index] + 4, bo, 0, I915_GEM_DOMAIN_SAMPLER, 0); int texel_size = _mesa_get_format_bytes(format); int w = intel_obj->Base.Size / texel_size; surf[2] = SET_FIELD(w & 0x7f, GEN7_SURFACE_WIDTH) | /* bits 6:0 of size */ SET_FIELD((w >> 7) & 0x1fff, GEN7_SURFACE_HEIGHT); /* 19:7 */ surf[3] = SET_FIELD((w >> 20) & 0x7f, BRW_SURFACE_DEPTH) | /* bits 26:20 */ (texel_size - 1); } gen7_check_surface_setup(surf, false /* is_render_target */); } static void gen7_update_texture_surface(struct gl_context *ctx, unsigned unit, uint32_t *binding_table, unsigned surf_index) { struct brw_context *brw = brw_context(ctx); struct intel_context *intel = &brw->intel; struct gl_texture_object *tObj = ctx->Texture.Unit[unit]._Current; struct intel_texture_object *intelObj = intel_texture_object(tObj); struct intel_mipmap_tree *mt = intelObj->mt; struct gl_texture_image *firstImage = tObj->Image[0][tObj->BaseLevel]; struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit); int width, height, depth; if (tObj->Target == GL_TEXTURE_BUFFER) { gen7_update_buffer_texture_surface(ctx, unit, binding_table, surf_index); return; } /* We don't support MSAA for textures. */ assert(!mt->array_spacing_lod0); assert(mt->num_samples <= 1); intel_miptree_get_dimensions_for_image(firstImage, &width, &height, &depth); uint32_t *surf = brw_state_batch(brw, AUB_TRACE_SURFACE_STATE, 8 * 4, 32, &binding_table[surf_index]); memset(surf, 0, 8 * 4); uint32_t tex_format = translate_tex_format(mt->format, firstImage->InternalFormat, tObj->DepthMode, sampler->sRGBDecode); surf[0] = translate_tex_target(tObj->Target) << BRW_SURFACE_TYPE_SHIFT | tex_format << BRW_SURFACE_FORMAT_SHIFT | gen7_surface_tiling_mode(mt->region->tiling) | BRW_SURFACE_CUBEFACE_ENABLES; if (mt->align_h == 4) surf[0] |= GEN7_SURFACE_VALIGN_4; if (mt->align_w == 8) surf[0] |= GEN7_SURFACE_HALIGN_8; if (depth > 1 && tObj->Target != GL_TEXTURE_3D) surf[0] |= GEN7_SURFACE_IS_ARRAY; surf[1] = mt->region->bo->offset + mt->offset; /* reloc */ surf[2] = SET_FIELD(width - 1, GEN7_SURFACE_WIDTH) | SET_FIELD(height - 1, GEN7_SURFACE_HEIGHT); surf[3] = SET_FIELD(depth - 1, BRW_SURFACE_DEPTH) | ((intelObj->mt->region->pitch * intelObj->mt->cpp) - 1); surf[5] = intelObj->_MaxLevel - tObj->BaseLevel; /* mip count */ if (intel->is_haswell) { /* Handling GL_ALPHA as a surface format override breaks 1.30+ style * texturing functions that return a float, as our code generation always * selects the .x channel (which would always be 0). */ const bool alpha_depth = tObj->DepthMode == GL_ALPHA && (firstImage->_BaseFormat == GL_DEPTH_COMPONENT || firstImage->_BaseFormat == GL_DEPTH_STENCIL); const int swizzle = unlikely(alpha_depth) ? SWIZZLE_XYZW : brw_get_texture_swizzle(tObj); surf[7] = SET_FIELD(swizzle_to_scs(GET_SWZ(swizzle, 0)), GEN7_SURFACE_SCS_R) | SET_FIELD(swizzle_to_scs(GET_SWZ(swizzle, 1)), GEN7_SURFACE_SCS_G) | SET_FIELD(swizzle_to_scs(GET_SWZ(swizzle, 2)), GEN7_SURFACE_SCS_B) | SET_FIELD(swizzle_to_scs(GET_SWZ(swizzle, 3)), GEN7_SURFACE_SCS_A); } /* Emit relocation to surface contents */ drm_intel_bo_emit_reloc(brw->intel.batch.bo, binding_table[surf_index] + 4, intelObj->mt->region->bo, intelObj->mt->offset, I915_GEM_DOMAIN_SAMPLER, 0); gen7_check_surface_setup(surf, false /* is_render_target */); } /** * Create the constant buffer surface. Vertex/fragment shader constants will * be read from this buffer with Data Port Read instructions/messages. */ static void gen7_create_constant_surface(struct brw_context *brw, drm_intel_bo *bo, uint32_t offset, int width, uint32_t *out_offset) { struct intel_context *intel = &brw->intel; const GLint w = width - 1; uint32_t *surf = brw_state_batch(brw, AUB_TRACE_SURFACE_STATE, 8 * 4, 32, out_offset); memset(surf, 0, 8 * 4); surf[0] = BRW_SURFACE_BUFFER << BRW_SURFACE_TYPE_SHIFT | BRW_SURFACEFORMAT_R32G32B32A32_FLOAT << BRW_SURFACE_FORMAT_SHIFT | BRW_SURFACE_RC_READ_WRITE; assert(bo); surf[1] = bo->offset + offset; /* reloc */ surf[2] = SET_FIELD(w & 0x7f, GEN7_SURFACE_WIDTH) | SET_FIELD((w >> 7) & 0x1fff, GEN7_SURFACE_HEIGHT); surf[3] = SET_FIELD((w >> 20) & 0x7f, BRW_SURFACE_DEPTH) | (16 - 1); /* stride between samples */ if (intel->is_haswell) { surf[7] = SET_FIELD(HSW_SCS_RED, GEN7_SURFACE_SCS_R) | SET_FIELD(HSW_SCS_GREEN, GEN7_SURFACE_SCS_G) | SET_FIELD(HSW_SCS_BLUE, GEN7_SURFACE_SCS_B) | SET_FIELD(HSW_SCS_ALPHA, GEN7_SURFACE_SCS_A); } /* Emit relocation to surface contents. Section 5.1.1 of the gen4 * bspec ("Data Cache") says that the data cache does not exist as * a separate cache and is just the sampler cache. */ drm_intel_bo_emit_reloc(intel->batch.bo, *out_offset + 4, bo, offset, I915_GEM_DOMAIN_SAMPLER, 0); gen7_check_surface_setup(surf, false /* is_render_target */); } static void gen7_update_null_renderbuffer_surface(struct brw_context *brw, unsigned unit) { /* 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. */ struct intel_context *intel = &brw->intel; struct gl_context *ctx = &intel->ctx; /* _NEW_BUFFERS */ const struct gl_framebuffer *fb = ctx->DrawBuffer; uint32_t *surf = brw_state_batch(brw, AUB_TRACE_SURFACE_STATE, 8 * 4, 32, &brw->wm.surf_offset[unit]); 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(fb->Width - 1, GEN7_SURFACE_WIDTH) | SET_FIELD(fb->Height - 1, GEN7_SURFACE_HEIGHT); gen7_check_surface_setup(surf, true /* is_render_target */); } /** * Sets up a surface state structure to point at the given region. * While it is only used for the front/back buffer currently, it should be * usable for further buffers when doing ARB_draw_buffer support. */ static void gen7_update_renderbuffer_surface(struct brw_context *brw, struct gl_renderbuffer *rb, unsigned int unit) { struct intel_context *intel = &brw->intel; struct gl_context *ctx = &intel->ctx; struct intel_renderbuffer *irb = intel_renderbuffer(rb); struct intel_region *region = irb->mt->region; uint32_t tile_x, tile_y; uint32_t format; gl_format rb_format = intel_rb_format(irb); uint32_t *surf = brw_state_batch(brw, AUB_TRACE_SURFACE_STATE, 8 * 4, 32, &brw->wm.surf_offset[unit]); memset(surf, 0, 8 * 4); /* Render targets can't use IMS layout */ assert(irb->mt->msaa_layout != INTEL_MSAA_LAYOUT_IMS); switch (rb_format) { case MESA_FORMAT_SARGB8: /* _NEW_BUFFERS * * Without GL_EXT_framebuffer_sRGB we shouldn't bind sRGB surfaces to the * blend/update as sRGB. */ if (ctx->Color.sRGBEnabled) format = brw_format_for_mesa_format(rb_format); else format = BRW_SURFACEFORMAT_B8G8R8A8_UNORM; break; default: assert(brw_render_target_supported(intel, rb)); format = brw->render_target_format[rb_format]; if (unlikely(!brw->format_supported_as_render_target[rb_format])) { _mesa_problem(ctx, "%s: renderbuffer format %s unsupported\n", __FUNCTION__, _mesa_get_format_name(rb_format)); } break; } surf[0] = BRW_SURFACE_2D << BRW_SURFACE_TYPE_SHIFT | format << BRW_SURFACE_FORMAT_SHIFT | (irb->mt->array_spacing_lod0 ? GEN7_SURFACE_ARYSPC_LOD0 : GEN7_SURFACE_ARYSPC_FULL) | gen7_surface_tiling_mode(region->tiling); if (irb->mt->align_h == 4) surf[0] |= GEN7_SURFACE_VALIGN_4; if (irb->mt->align_w == 8) surf[0] |= GEN7_SURFACE_HALIGN_8; /* reloc */ surf[1] = intel_renderbuffer_tile_offsets(irb, &tile_x, &tile_y) + region->bo->offset; /* reloc */ assert(brw->has_surface_tile_offset); /* Note that the low bits of these fields are missing, so * there's the possibility of getting in trouble. */ assert(tile_x % 4 == 0); assert(tile_y % 2 == 0); surf[5] = SET_FIELD(tile_x / 4, BRW_SURFACE_X_OFFSET) | SET_FIELD(tile_y / 2, BRW_SURFACE_Y_OFFSET); surf[2] = SET_FIELD(rb->Width - 1, GEN7_SURFACE_WIDTH) | SET_FIELD(rb->Height - 1, GEN7_SURFACE_HEIGHT); surf[3] = (region->pitch * region->cpp) - 1; surf[4] = gen7_surface_msaa_bits(irb->mt->num_samples, irb->mt->msaa_layout); if (irb->mt->msaa_layout == INTEL_MSAA_LAYOUT_CMS) { gen7_set_surface_mcs_info(brw, surf, brw->wm.surf_offset[unit], irb->mt->mcs_mt, true /* is RT */); } if (intel->is_haswell) { surf[7] = SET_FIELD(HSW_SCS_RED, GEN7_SURFACE_SCS_R) | SET_FIELD(HSW_SCS_GREEN, GEN7_SURFACE_SCS_G) | SET_FIELD(HSW_SCS_BLUE, GEN7_SURFACE_SCS_B) | SET_FIELD(HSW_SCS_ALPHA, GEN7_SURFACE_SCS_A); } drm_intel_bo_emit_reloc(brw->intel.batch.bo, brw->wm.surf_offset[unit] + 4, region->bo, surf[1] - region->bo->offset, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER); gen7_check_surface_setup(surf, true /* is_render_target */); } void gen7_init_vtable_surface_functions(struct brw_context *brw) { struct intel_context *intel = &brw->intel; intel->vtbl.update_texture_surface = gen7_update_texture_surface; intel->vtbl.update_renderbuffer_surface = gen7_update_renderbuffer_surface; intel->vtbl.update_null_renderbuffer_surface = gen7_update_null_renderbuffer_surface; intel->vtbl.create_constant_surface = gen7_create_constant_surface; }