diff options
Diffstat (limited to 'src/gallium/drivers/i965/brw_curbe.c')
| -rw-r--r-- | src/gallium/drivers/i965/brw_curbe.c | 382 |
1 files changed, 0 insertions, 382 deletions
diff --git a/src/gallium/drivers/i965/brw_curbe.c b/src/gallium/drivers/i965/brw_curbe.c deleted file mode 100644 index a701de33f5d..00000000000 --- a/src/gallium/drivers/i965/brw_curbe.c +++ /dev/null @@ -1,382 +0,0 @@ -/* - Copyright (C) Intel Corp. 2006. All Rights Reserved. - Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to - develop this 3D driver. - - 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 COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS 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. - - **********************************************************************/ - /* - * Authors: - * Keith Whitwell <[email protected]> - */ - -#include "util/u_memory.h" -#include "util/u_math.h" - -#include "brw_batchbuffer.h" -#include "brw_context.h" -#include "brw_defines.h" -#include "brw_state.h" -#include "brw_debug.h" - - -/** - * Partition the CURBE between the various users of constant values: - * Note that vertex and fragment shaders can now fetch constants out - * of constant buffers. We no longer allocatea block of the GRF for - * constants. That greatly reduces the demand for space in the CURBE. - * Some of the comments within are dated... - */ -static int calculate_curbe_offsets( struct brw_context *brw ) -{ - /* CACHE_NEW_WM_PROG */ - const GLuint nr_fp_regs = brw->wm.prog_data->curb_read_length; - - /* BRW_NEW_VERTEX_PROGRAM */ - const GLuint nr_vp_regs = brw->vs.prog_data->curb_read_length; - GLuint nr_clip_regs = 0; - GLuint total_regs; - - /* PIPE_NEW_CLIP */ - if (brw->curr.ucp.nr) { - GLuint nr_planes = 6 + brw->curr.ucp.nr; - nr_clip_regs = (nr_planes * 4 + 15) / 16; - } - - - total_regs = nr_fp_regs + nr_vp_regs + nr_clip_regs; - - /* When this is > 32, want to use a true constant buffer to hold - * the extra constants. - */ - assert(total_regs <= 32); - - /* Lazy resize: - */ - if (nr_fp_regs > brw->curbe.wm_size || - nr_vp_regs > brw->curbe.vs_size || - nr_clip_regs != brw->curbe.clip_size || - (total_regs < brw->curbe.total_size / 4 && - brw->curbe.total_size > 16)) { - - GLuint reg = 0; - - /* Calculate a new layout: - */ - reg = 0; - brw->curbe.wm_start = reg; - brw->curbe.wm_size = nr_fp_regs; reg += nr_fp_regs; - brw->curbe.clip_start = reg; - brw->curbe.clip_size = nr_clip_regs; reg += nr_clip_regs; - brw->curbe.vs_start = reg; - brw->curbe.vs_size = nr_vp_regs; reg += nr_vp_regs; - brw->curbe.total_size = reg; - - if (BRW_DEBUG & DEBUG_CURBE) - debug_printf("curbe wm %d+%d clip %d+%d vs %d+%d\n", - brw->curbe.wm_start, - brw->curbe.wm_size, - brw->curbe.clip_start, - brw->curbe.clip_size, - brw->curbe.vs_start, - brw->curbe.vs_size ); - - brw->state.dirty.brw |= BRW_NEW_CURBE_OFFSETS; - } - - return 0; -} - - -const struct brw_tracked_state brw_curbe_offsets = { - .dirty = { - .mesa = PIPE_NEW_CLIP, - .brw = BRW_NEW_VERTEX_PROGRAM, - .cache = CACHE_NEW_WM_PROG - }, - .prepare = calculate_curbe_offsets -}; - - - - -/* Define the number of curbes within CS's urb allocation. Multiple - * urb entries -> multiple curbes. These will be used by - * fixed-function hardware in a double-buffering scheme to avoid a - * pipeline stall each time the contents of the curbe is changed. - */ -int brw_upload_cs_urb_state(struct brw_context *brw) -{ - struct brw_cs_urb_state cs_urb; - memset(&cs_urb, 0, sizeof(cs_urb)); - - /* It appears that this is the state packet for the CS unit, ie. the - * urb entries detailed here are housed in the CS range from the - * URB_FENCE command. - */ - cs_urb.header.opcode = CMD_CS_URB_STATE; - cs_urb.header.length = sizeof(cs_urb)/4 - 2; - - /* BRW_NEW_URB_FENCE */ - cs_urb.bits0.nr_urb_entries = brw->urb.nr_cs_entries; - cs_urb.bits0.urb_entry_size = brw->urb.csize - 1; - - assert(brw->urb.nr_cs_entries); - BRW_CACHED_BATCH_STRUCT(brw, &cs_urb); - return 0; -} - -static GLfloat fixed_plane[6][4] = { - { 0, 0, -1, 1 }, - { 0, 0, 1, 1 }, - { 0, -1, 0, 1 }, - { 0, 1, 0, 1 }, - {-1, 0, 0, 1 }, - { 1, 0, 0, 1 } -}; - -/* Upload a new set of constants. Too much variability to go into the - * cache mechanism, but maybe would benefit from a comparison against - * the current uploaded set of constants. - */ -static enum pipe_error prepare_curbe_buffer(struct brw_context *brw) -{ - const GLuint sz = brw->curbe.total_size; - const GLuint bufsz = sz * 16 * sizeof(GLfloat); - enum pipe_error ret; - GLfloat *buf; - GLuint i; - - if (sz == 0) { - if (brw->curbe.last_buf) { - FREE(brw->curbe.last_buf); - brw->curbe.last_buf = NULL; - brw->curbe.last_bufsz = 0; - } - return 0; - } - - buf = (GLfloat *) CALLOC(bufsz, 1); - - /* fragment shader constants */ - if (brw->curbe.wm_size) { - const struct brw_fragment_shader *fs = brw->curr.fragment_shader; - GLuint offset = brw->curbe.wm_start * 16; - GLuint nr_immediate, nr_const; - - nr_immediate = fs->immediates.nr; - if (nr_immediate) { - memcpy(&buf[offset], - fs->immediates.data, - nr_immediate * 4 * sizeof(float)); - - offset += nr_immediate * 4; - } - - nr_const = fs->info.file_max[TGSI_FILE_CONSTANT] + 1; -/* nr_const = brw->wm.prog_data->nr_params; */ - if (nr_const) { - pipe_buffer_read( &brw->base, - brw->curr.fragment_constants, - 0, - nr_const * 4 * sizeof(float), - &buf[offset]); - } - } - - - /* The clipplanes are actually delivered to both CLIP and VS units. - * VS uses them to calculate the outcode bitmasks. - */ - if (brw->curbe.clip_size) { - GLuint offset = brw->curbe.clip_start * 16; - GLuint j; - - /* If any planes are going this way, send them all this way: - */ - for (i = 0; i < 6; i++) { - buf[offset + i * 4 + 0] = fixed_plane[i][0]; - buf[offset + i * 4 + 1] = fixed_plane[i][1]; - buf[offset + i * 4 + 2] = fixed_plane[i][2]; - buf[offset + i * 4 + 3] = fixed_plane[i][3]; - } - - /* Clip planes: - */ - assert(brw->curr.ucp.nr <= 6); - for (j = 0; j < brw->curr.ucp.nr; j++) { - buf[offset + i * 4 + 0] = brw->curr.ucp.ucp[j][0]; - buf[offset + i * 4 + 1] = brw->curr.ucp.ucp[j][1]; - buf[offset + i * 4 + 2] = brw->curr.ucp.ucp[j][2]; - buf[offset + i * 4 + 3] = brw->curr.ucp.ucp[j][3]; - i++; - } - } - - /* vertex shader constants */ - if (brw->curbe.vs_size) { - GLuint offset = brw->curbe.vs_start * 16; - const struct brw_vertex_shader *vs = brw->curr.vertex_shader; - GLuint nr_immediate, nr_const; - - nr_immediate = vs->immediates.nr; - if (nr_immediate) { - memcpy(&buf[offset], - vs->immediates.data, - nr_immediate * 4 * sizeof(float)); - - offset += nr_immediate * 4; - } - - nr_const = vs->info.file_max[TGSI_FILE_CONSTANT] + 1; - if (nr_const) { - /* XXX: note that constant buffers are currently *already* in - * buffer objects. If we want to keep on putting them into the - * curbe, makes sense to treat constbuf's specially with malloc. - */ - - /* XXX: what if user's constant buffer is too small? - */ - pipe_buffer_read(&brw->base, - brw->curr.vertex_constants, - 0, - nr_const * 4 * sizeof(float), - &buf[offset]); - } - } - - if (BRW_DEBUG & DEBUG_CURBE) { - for (i = 0; i < sz*16; i+=4) - debug_printf("curbe %d.%d: %f %f %f %f\n", i/8, i&4, - buf[i+0], buf[i+1], buf[i+2], buf[i+3]); - - debug_printf("last_buf %p buf %p sz %d/%d cmp %d\n", - (void *)brw->curbe.last_buf, (void *)buf, - bufsz, brw->curbe.last_bufsz, - brw->curbe.last_buf ? memcmp(buf, brw->curbe.last_buf, bufsz) : -1); - } - - if (brw->curbe.curbe_bo != NULL && - brw->curbe.last_buf && - bufsz == brw->curbe.last_bufsz && - memcmp(buf, brw->curbe.last_buf, bufsz) == 0) { - /* constants have not changed */ - FREE(buf); - } - else { - /* constants have changed */ - FREE(brw->curbe.last_buf); - - brw->curbe.last_buf = buf; - brw->curbe.last_bufsz = bufsz; - - if (brw->curbe.curbe_bo != NULL && - (brw->curbe.need_new_bo || - brw->curbe.curbe_next_offset + bufsz > brw->curbe.curbe_bo->size)) - { - bo_reference(&brw->curbe.curbe_bo, NULL); - } - - if (brw->curbe.curbe_bo == NULL) { - /* Allocate a single page for CURBE entries for this - * batchbuffer. They're generally around 64b. We will - * discard the curbe buffer after the batch is flushed to - * avoid synchronous updates. - */ - ret = brw->sws->bo_alloc(brw->sws, - BRW_BUFFER_TYPE_CURBE, - 4096, 1 << 6, - &brw->curbe.curbe_bo); - if (ret) - return ret; - - brw->curbe.curbe_next_offset = 0; - } - - brw->curbe.curbe_offset = brw->curbe.curbe_next_offset; - brw->curbe.curbe_next_offset += bufsz; - brw->curbe.curbe_next_offset = align(brw->curbe.curbe_next_offset, 64); - - /* Copy data to the buffer: - */ - brw->sws->bo_subdata(brw->curbe.curbe_bo, - BRW_DATA_CONSTANT_BUFFER, - brw->curbe.curbe_offset, - bufsz, - buf, - NULL, 0); - } - - brw_add_validated_bo(brw, brw->curbe.curbe_bo); - - /* Because this provokes an action (ie copy the constants into the - * URB), it shouldn't be shortcircuited if identical to the - * previous time - because eg. the urb destination may have - * changed, or the urb contents different to last time. - * - * Note that the data referred to is actually copied internally, - * not just used in place according to passed pointer. - * - * It appears that the CS unit takes care of using each available - * URB entry (Const URB Entry == CURBE) in turn, and issuing - * flushes as necessary when doublebuffering of CURBEs isn't - * possible. - */ - - return 0; -} - -static enum pipe_error emit_curbe_buffer(struct brw_context *brw) -{ - GLuint sz = brw->curbe.total_size; - - BEGIN_BATCH(2, IGNORE_CLIPRECTS); - if (sz == 0) { - OUT_BATCH((CMD_CONST_BUFFER << 16) | (2 - 2)); - OUT_BATCH(0); - } else { - OUT_BATCH((CMD_CONST_BUFFER << 16) | (1 << 8) | (2 - 2)); - OUT_RELOC(brw->curbe.curbe_bo, - BRW_USAGE_STATE, - (sz - 1) + brw->curbe.curbe_offset); - } - ADVANCE_BATCH(); - return 0; -} - -const struct brw_tracked_state brw_curbe_buffer = { - .dirty = { - .mesa = (PIPE_NEW_FRAGMENT_CONSTANTS | - PIPE_NEW_VERTEX_CONSTANTS | - PIPE_NEW_CLIP), - .brw = (BRW_NEW_FRAGMENT_PROGRAM | - BRW_NEW_VERTEX_PROGRAM | - BRW_NEW_URB_FENCE | /* Implicit - hardware requires this, not used above */ - BRW_NEW_PSP | /* Implicit - hardware requires this, not used above */ - BRW_NEW_CURBE_OFFSETS | - BRW_NEW_BATCH), - .cache = (CACHE_NEW_WM_PROG) - }, - .prepare = prepare_curbe_buffer, - .emit = emit_curbe_buffer, -}; - |