| 0,0 → 1,538 |
|---|
| /* |
| * Copyright © 2013 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. |
| */ |
| |
| extern "C" { |
| #include "main/teximage.h" |
| #include "main/blend.h" |
| #include "main/fbobject.h" |
| #include "main/renderbuffer.h" |
| } |
| |
| #include "glsl/ralloc.h" |
| |
| #include "intel_fbo.h" |
| |
| #include "brw_blorp.h" |
| #include "brw_context.h" |
| #include "brw_eu.h" |
| #include "brw_state.h" |
| |
| #define FILE_DEBUG_FLAG DEBUG_BLORP |
| |
| struct brw_blorp_const_color_prog_key |
| { |
| bool use_simd16_replicated_data; |
| bool pad[3]; |
| }; |
| |
| /** |
| * Parameters for a blorp operation where the fragment shader outputs a |
| * constant color. This is used for both fast color clears and color |
| * resolves. |
| */ |
| class brw_blorp_const_color_params : public brw_blorp_params |
| { |
| public: |
| virtual uint32_t get_wm_prog(struct brw_context *brw, |
| brw_blorp_prog_data **prog_data) const; |
| |
| protected: |
| brw_blorp_const_color_prog_key wm_prog_key; |
| }; |
| |
| class brw_blorp_clear_params : public brw_blorp_const_color_params |
| { |
| public: |
| brw_blorp_clear_params(struct brw_context *brw, |
| struct gl_framebuffer *fb, |
| struct gl_renderbuffer *rb, |
| GLubyte *color_mask, |
| bool partial_clear); |
| }; |
| |
| |
| /** |
| * Parameters for a blorp operation that performs a "render target resolve". |
| * This is used to resolve pending fast clear pixels before a color buffer is |
| * used for texturing, ReadPixels, or scanout. |
| */ |
| class brw_blorp_rt_resolve_params : public brw_blorp_const_color_params |
| { |
| public: |
| brw_blorp_rt_resolve_params(struct brw_context *brw, |
| struct intel_mipmap_tree *mt); |
| }; |
| |
| |
| class brw_blorp_const_color_program |
| { |
| public: |
| brw_blorp_const_color_program(struct brw_context *brw, |
| const brw_blorp_const_color_prog_key *key); |
| ~brw_blorp_const_color_program(); |
| |
| const GLuint *compile(struct brw_context *brw, GLuint *program_size); |
| |
| brw_blorp_prog_data prog_data; |
| |
| private: |
| void alloc_regs(); |
| |
| void *mem_ctx; |
| struct brw_context *brw; |
| const brw_blorp_const_color_prog_key *key; |
| struct brw_compile func; |
| |
| /* Thread dispatch header */ |
| struct brw_reg R0; |
| |
| /* Pixel X/Y coordinates (always in R1). */ |
| struct brw_reg R1; |
| |
| /* Register with push constants (a single vec4) */ |
| struct brw_reg clear_rgba; |
| |
| /* MRF used for render target writes */ |
| GLuint base_mrf; |
| }; |
| |
| brw_blorp_const_color_program::brw_blorp_const_color_program( |
| struct brw_context *brw, |
| const brw_blorp_const_color_prog_key *key) |
| : mem_ctx(ralloc_context(NULL)), |
| brw(brw), |
| key(key), |
| R0(), |
| R1(), |
| clear_rgba(), |
| base_mrf(0) |
| { |
| brw_init_compile(brw, &func, mem_ctx); |
| } |
| |
| brw_blorp_const_color_program::~brw_blorp_const_color_program() |
| { |
| ralloc_free(mem_ctx); |
| } |
| |
| |
| /** |
| * Determine if fast color clear supports the given clear color. |
| * |
| * Fast color clear can only clear to color values of 1.0 or 0.0. At the |
| * moment we only support floating point, unorm, and snorm buffers. |
| */ |
| static bool |
| is_color_fast_clear_compatible(struct brw_context *brw, |
| gl_format format, |
| const union gl_color_union *color) |
| { |
| if (_mesa_is_format_integer_color(format)) |
| return false; |
| |
| for (int i = 0; i < 4; i++) { |
| if (color->f[i] != 0.0 && color->f[i] != 1.0) { |
| perf_debug("Clear color unsupported by fast color clear. " |
| "Falling back to slow clear.\n"); |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| |
| /** |
| * Convert the given color to a bitfield suitable for ORing into DWORD 7 of |
| * SURFACE_STATE. |
| */ |
| static uint32_t |
| compute_fast_clear_color_bits(const union gl_color_union *color) |
| { |
| uint32_t bits = 0; |
| for (int i = 0; i < 4; i++) { |
| if (color->f[i] != 0.0) |
| bits |= 1 << (GEN7_SURFACE_CLEAR_COLOR_SHIFT + (3 - i)); |
| } |
| return bits; |
| } |
| |
| |
| brw_blorp_clear_params::brw_blorp_clear_params(struct brw_context *brw, |
| struct gl_framebuffer *fb, |
| struct gl_renderbuffer *rb, |
| GLubyte *color_mask, |
| bool partial_clear) |
| { |
| struct gl_context *ctx = &brw->ctx; |
| struct intel_renderbuffer *irb = intel_renderbuffer(rb); |
| |
| dst.set(brw, irb->mt, irb->mt_level, irb->mt_layer); |
| |
| /* Override the surface format according to the context's sRGB rules. */ |
| gl_format format = _mesa_get_render_format(ctx, irb->mt->format); |
| dst.brw_surfaceformat = brw->render_target_format[format]; |
| |
| x0 = fb->_Xmin; |
| x1 = fb->_Xmax; |
| if (rb->Name != 0) { |
| y0 = fb->_Ymin; |
| y1 = fb->_Ymax; |
| } else { |
| y0 = rb->Height - fb->_Ymax; |
| y1 = rb->Height - fb->_Ymin; |
| } |
| |
| float *push_consts = (float *)&wm_push_consts; |
| |
| push_consts[0] = ctx->Color.ClearColor.f[0]; |
| push_consts[1] = ctx->Color.ClearColor.f[1]; |
| push_consts[2] = ctx->Color.ClearColor.f[2]; |
| push_consts[3] = ctx->Color.ClearColor.f[3]; |
| |
| use_wm_prog = true; |
| |
| memset(&wm_prog_key, 0, sizeof(wm_prog_key)); |
| |
| wm_prog_key.use_simd16_replicated_data = true; |
| |
| /* From the SNB PRM (Vol4_Part1): |
| * |
| * "Replicated data (Message Type = 111) is only supported when |
| * accessing tiled memory. Using this Message Type to access linear |
| * (untiled) memory is UNDEFINED." |
| */ |
| if (irb->mt->region->tiling == I915_TILING_NONE) |
| wm_prog_key.use_simd16_replicated_data = false; |
| |
| /* Constant color writes ignore everyting in blend and color calculator |
| * state. This is not documented. |
| */ |
| for (int i = 0; i < 4; i++) { |
| if (!color_mask[i]) { |
| color_write_disable[i] = true; |
| wm_prog_key.use_simd16_replicated_data = false; |
| } |
| } |
| |
| /* If we can do this as a fast color clear, do so. */ |
| if (irb->mt->mcs_state != INTEL_MCS_STATE_NONE && !partial_clear && |
| wm_prog_key.use_simd16_replicated_data && |
| is_color_fast_clear_compatible(brw, format, &ctx->Color.ClearColor)) { |
| memset(push_consts, 0xff, 4*sizeof(float)); |
| fast_clear_op = GEN7_FAST_CLEAR_OP_FAST_CLEAR; |
| |
| /* From the Ivy Bridge PRM, Vol2 Part1 11.7 "MCS Buffer for Render |
| * Target(s)", beneath the "Fast Color Clear" bullet (p327): |
| * |
| * Clear pass must have a clear rectangle that must follow alignment |
| * rules in terms of pixels and lines as shown in the table |
| * below. Further, the clear-rectangle height and width must be |
| * multiple of the following dimensions. If the height and width of |
| * the render target being cleared do not meet these requirements, |
| * an MCS buffer can be created such that it follows the requirement |
| * and covers the RT. |
| * |
| * The alignment size in the table that follows is related to the |
| * alignment size returned by intel_get_non_msrt_mcs_alignment(), but |
| * with X alignment multiplied by 16 and Y alignment multiplied by 32. |
| */ |
| unsigned x_align, y_align; |
| intel_get_non_msrt_mcs_alignment(brw, irb->mt, &x_align, &y_align); |
| x_align *= 16; |
| y_align *= 32; |
| |
| if (brw->is_haswell && brw->gt == 3) { |
| /* From BSpec: 3D-Media-GPGPU Engine > 3D Pipeline > Pixel > Pixel |
| * Backend > MCS Buffer for Render Target(s) [DevIVB+]: |
| * [DevHSW:GT3]: Clear rectangle must be aligned to two times the |
| * number of pixels in the table shown below... |
| * x_align, y_align values computed above are the relevant entries |
| * in the referred table. |
| */ |
| x0 = ROUND_DOWN_TO(x0, 2 * x_align); |
| y0 = ROUND_DOWN_TO(y0, 2 * y_align); |
| x1 = ALIGN(x1, 2 * x_align); |
| y1 = ALIGN(y1, 2 * y_align); |
| } else { |
| x0 = ROUND_DOWN_TO(x0, x_align); |
| y0 = ROUND_DOWN_TO(y0, y_align); |
| x1 = ALIGN(x1, x_align); |
| y1 = ALIGN(y1, y_align); |
| } |
| |
| /* From the Ivy Bridge PRM, Vol2 Part1 11.7 "MCS Buffer for Render |
| * Target(s)", beneath the "Fast Color Clear" bullet (p327): |
| * |
| * In order to optimize the performance MCS buffer (when bound to 1X |
| * RT) clear similarly to MCS buffer clear for MSRT case, clear rect |
| * is required to be scaled by the following factors in the |
| * horizontal and vertical directions: |
| * |
| * The X and Y scale down factors in the table that follows are each |
| * equal to half the alignment value computed above. |
| */ |
| unsigned x_scaledown = x_align / 2; |
| unsigned y_scaledown = y_align / 2; |
| x0 /= x_scaledown; |
| y0 /= y_scaledown; |
| x1 /= x_scaledown; |
| y1 /= y_scaledown; |
| } |
| } |
| |
| |
| brw_blorp_rt_resolve_params::brw_blorp_rt_resolve_params( |
| struct brw_context *brw, |
| struct intel_mipmap_tree *mt) |
| { |
| dst.set(brw, mt, 0 /* level */, 0 /* layer */); |
| |
| /* From the Ivy Bridge PRM, Vol2 Part1 11.9 "Render Target Resolve": |
| * |
| * A rectangle primitive must be scaled down by the following factors |
| * with respect to render target being resolved. |
| * |
| * The scaledown factors in the table that follows are related to the |
| * alignment size returned by intel_get_non_msrt_mcs_alignment(), but with |
| * X and Y alignment each divided by 2. |
| */ |
| unsigned x_align, y_align; |
| intel_get_non_msrt_mcs_alignment(brw, mt, &x_align, &y_align); |
| unsigned x_scaledown = x_align / 2; |
| unsigned y_scaledown = y_align / 2; |
| x0 = y0 = 0; |
| x1 = ALIGN(mt->logical_width0, x_scaledown) / x_scaledown; |
| y1 = ALIGN(mt->logical_height0, y_scaledown) / y_scaledown; |
| |
| fast_clear_op = GEN7_FAST_CLEAR_OP_RESOLVE; |
| |
| /* Note: there is no need to initialize push constants because it doesn't |
| * matter what data gets dispatched to the render target. However, we must |
| * ensure that the fragment shader delivers the data using the "replicated |
| * color" message. |
| */ |
| use_wm_prog = true; |
| memset(&wm_prog_key, 0, sizeof(wm_prog_key)); |
| wm_prog_key.use_simd16_replicated_data = true; |
| } |
| |
| |
| uint32_t |
| brw_blorp_const_color_params::get_wm_prog(struct brw_context *brw, |
| brw_blorp_prog_data **prog_data) |
| const |
| { |
| uint32_t prog_offset = 0; |
| if (!brw_search_cache(&brw->cache, BRW_BLORP_CONST_COLOR_PROG, |
| &this->wm_prog_key, sizeof(this->wm_prog_key), |
| &prog_offset, prog_data)) { |
| brw_blorp_const_color_program prog(brw, &this->wm_prog_key); |
| GLuint program_size; |
| const GLuint *program = prog.compile(brw, &program_size); |
| brw_upload_cache(&brw->cache, BRW_BLORP_CONST_COLOR_PROG, |
| &this->wm_prog_key, sizeof(this->wm_prog_key), |
| program, program_size, |
| &prog.prog_data, sizeof(prog.prog_data), |
| &prog_offset, prog_data); |
| } |
| return prog_offset; |
| } |
| |
| void |
| brw_blorp_const_color_program::alloc_regs() |
| { |
| int reg = 0; |
| this->R0 = retype(brw_vec8_grf(reg++, 0), BRW_REGISTER_TYPE_UW); |
| this->R1 = retype(brw_vec8_grf(reg++, 0), BRW_REGISTER_TYPE_UW); |
| |
| prog_data.first_curbe_grf = reg; |
| clear_rgba = retype(brw_vec4_grf(reg++, 0), BRW_REGISTER_TYPE_F); |
| reg += BRW_BLORP_NUM_PUSH_CONST_REGS; |
| |
| /* Make sure we didn't run out of registers */ |
| assert(reg <= GEN7_MRF_HACK_START); |
| |
| this->base_mrf = 2; |
| } |
| |
| const GLuint * |
| brw_blorp_const_color_program::compile(struct brw_context *brw, |
| GLuint *program_size) |
| { |
| /* Set up prog_data */ |
| memset(&prog_data, 0, sizeof(prog_data)); |
| prog_data.persample_msaa_dispatch = false; |
| |
| alloc_regs(); |
| |
| brw_set_compression_control(&func, BRW_COMPRESSION_NONE); |
| |
| struct brw_reg mrf_rt_write = |
| retype(vec16(brw_message_reg(base_mrf)), BRW_REGISTER_TYPE_F); |
| |
| uint32_t mlen, msg_type; |
| if (key->use_simd16_replicated_data) { |
| /* The message payload is a single register with the low 4 floats/ints |
| * filled with the constant clear color. |
| */ |
| brw_set_mask_control(&func, BRW_MASK_DISABLE); |
| brw_MOV(&func, vec4(brw_message_reg(base_mrf)), clear_rgba); |
| brw_set_mask_control(&func, BRW_MASK_ENABLE); |
| |
| msg_type = BRW_DATAPORT_RENDER_TARGET_WRITE_SIMD16_SINGLE_SOURCE_REPLICATED; |
| mlen = 1; |
| } else { |
| for (int i = 0; i < 4; i++) { |
| /* The message payload is pairs of registers for 16 pixels each of r, |
| * g, b, and a. |
| */ |
| brw_set_compression_control(&func, BRW_COMPRESSION_COMPRESSED); |
| brw_MOV(&func, |
| brw_message_reg(base_mrf + i * 2), |
| brw_vec1_grf(clear_rgba.nr, i)); |
| brw_set_compression_control(&func, BRW_COMPRESSION_NONE); |
| } |
| |
| msg_type = BRW_DATAPORT_RENDER_TARGET_WRITE_SIMD16_SINGLE_SOURCE; |
| mlen = 8; |
| } |
| |
| /* Now write to the render target and terminate the thread */ |
| brw_fb_WRITE(&func, |
| 16 /* dispatch_width */, |
| base_mrf /* msg_reg_nr */, |
| mrf_rt_write /* src0 */, |
| msg_type, |
| BRW_BLORP_RENDERBUFFER_BINDING_TABLE_INDEX, |
| mlen, |
| 0 /* response_length */, |
| true /* eot */, |
| false /* header present */); |
| |
| if (unlikely(INTEL_DEBUG & DEBUG_BLORP)) { |
| printf("Native code for BLORP clear:\n"); |
| brw_dump_compile(&func, stdout, 0, func.next_insn_offset); |
| printf("\n"); |
| } |
| return brw_get_program(&func, program_size); |
| } |
| |
| extern "C" { |
| bool |
| brw_blorp_clear_color(struct brw_context *brw, struct gl_framebuffer *fb, |
| bool partial_clear) |
| { |
| struct gl_context *ctx = &brw->ctx; |
| |
| /* The constant color clear code doesn't work for multisampled surfaces, so |
| * we need to support falling back to other clear mechanisms. |
| * Unfortunately, our clear code is based on a bitmask that doesn't |
| * distinguish individual color attachments, so we walk the attachments to |
| * see if any require fallback, and fall back for all if any of them need |
| * to. |
| */ |
| for (unsigned buf = 0; buf < ctx->DrawBuffer->_NumColorDrawBuffers; buf++) { |
| struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[buf]; |
| struct intel_renderbuffer *irb = intel_renderbuffer(rb); |
| |
| if (irb && irb->mt->msaa_layout != INTEL_MSAA_LAYOUT_NONE) |
| return false; |
| } |
| |
| for (unsigned buf = 0; buf < ctx->DrawBuffer->_NumColorDrawBuffers; buf++) { |
| struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[buf]; |
| struct intel_renderbuffer *irb = intel_renderbuffer(rb); |
| |
| /* If this is an ES2 context or GL_ARB_ES2_compatibility is supported, |
| * the framebuffer can be complete with some attachments missing. In |
| * this case the _ColorDrawBuffers pointer will be NULL. |
| */ |
| if (rb == NULL) |
| continue; |
| |
| brw_blorp_clear_params params(brw, fb, rb, ctx->Color.ColorMask[buf], |
| partial_clear); |
| |
| bool is_fast_clear = |
| (params.fast_clear_op == GEN7_FAST_CLEAR_OP_FAST_CLEAR); |
| if (is_fast_clear) { |
| /* Record the clear color in the miptree so that it will be |
| * programmed in SURFACE_STATE by later rendering and resolve |
| * operations. |
| */ |
| uint32_t new_color_value = |
| compute_fast_clear_color_bits(&ctx->Color.ClearColor); |
| if (irb->mt->fast_clear_color_value != new_color_value) { |
| irb->mt->fast_clear_color_value = new_color_value; |
| brw->state.dirty.brw |= BRW_NEW_SURFACES; |
| } |
| |
| /* If the buffer is already in INTEL_MCS_STATE_CLEAR, the clear is |
| * redundant and can be skipped. |
| */ |
| if (irb->mt->mcs_state == INTEL_MCS_STATE_CLEAR) |
| continue; |
| |
| /* If the MCS buffer hasn't been allocated yet, we need to allocate |
| * it now. |
| */ |
| if (!irb->mt->mcs_mt) { |
| if (!intel_miptree_alloc_non_msrt_mcs(brw, irb->mt)) { |
| /* MCS allocation failed--probably this will only happen in |
| * out-of-memory conditions. But in any case, try to recover |
| * by falling back to a non-blorp clear technique. |
| */ |
| return false; |
| } |
| brw->state.dirty.brw |= BRW_NEW_SURFACES; |
| } |
| } |
| |
| DBG("%s to mt %p level %d layer %d\n", __FUNCTION__, |
| irb->mt, irb->mt_level, irb->mt_layer); |
| |
| brw_blorp_exec(brw, ¶ms); |
| |
| if (is_fast_clear) { |
| /* Now that the fast clear has occurred, put the buffer in |
| * INTEL_MCS_STATE_CLEAR so that we won't waste time doing redundant |
| * clears. |
| */ |
| irb->mt->mcs_state = INTEL_MCS_STATE_CLEAR; |
| } |
| } |
| |
| return true; |
| } |
| |
| void |
| brw_blorp_resolve_color(struct brw_context *brw, struct intel_mipmap_tree *mt) |
| { |
| DBG("%s to mt %p\n", __FUNCTION__, mt); |
| |
| brw_blorp_rt_resolve_params params(brw, mt); |
| brw_blorp_exec(brw, ¶ms); |
| mt->mcs_state = INTEL_MCS_STATE_RESOLVED; |
| } |
| |
| } /* extern "C" */ |