diff options
Diffstat (limited to 'src/gallium/drivers/i965/brw_vs_surface_state.c')
| -rw-r--r-- | src/gallium/drivers/i965/brw_vs_surface_state.c | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/src/gallium/drivers/i965/brw_vs_surface_state.c b/src/gallium/drivers/i965/brw_vs_surface_state.c new file mode 100644 index 00000000000..177a5170d23 --- /dev/null +++ b/src/gallium/drivers/i965/brw_vs_surface_state.c @@ -0,0 +1,232 @@ +/* + 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 <keith@tungstengraphics.com> + */ + +#include "brw_context.h" +#include "brw_state.h" +#include "brw_defines.h" +#include "brw_winsys.h" + +/* XXX: disabled true constant buffer functionality + */ + + +/* Creates a new VS constant buffer reflecting the current VS program's + * constants, if needed by the VS program. + * + * Otherwise, constants go through the CURBEs using the brw_constant_buffer + * state atom. + */ +#if 0 +static struct brw_winsys_buffer * +brw_vs_update_constant_buffer(struct brw_context *brw) +{ + /* XXX: true constant buffers + */ + struct brw_vertex_program *vp = + (struct brw_vertex_program *) brw->vertex_program; + const struct gl_program_parameter_list *params = vp->program.Base.Parameters; + const int size = params->NumParameters * 4 * sizeof(GLfloat); + drm_intel_bo *const_buffer; + + /* BRW_NEW_VERTEX_PROGRAM */ + if (!vp->use_const_buffer) + return NULL; + + const_buffer = brw->sws->bo_alloc(brw->sws, + BRW_BUFFER_TYPE_SHADER_CONSTANTS, + size, 64); + + /* _NEW_PROGRAM_CONSTANTS */ + brw->sws->bo_subdata(const_buffer, 0, size, params->ParameterValues, + NULL, 0); + + return const_buffer; +} +#endif + +/** + * Update the surface state for a VS constant buffer. + * + * Sets brw->vs.surf_bo[surf] and brw->vp->const_buffer. + */ +#if 0 +static void +brw_update_vs_constant_surface( struct brw_context *brw, + GLuint surf) +{ + struct brw_surface_key key; + struct pipe_buffer *cb = brw->curr.vs_constants; + enum pipe_error ret; + + assert(surf == 0); + + /* If we're in this state update atom, we need to update VS constants, so + * free the old buffer and create a new one for the new contents. + */ + ret = brw_vs_update_constant_buffer(brw, &vp->const_buffer); + if (ret) + return ret; + + /* If there's no constant buffer, then no surface BO is needed to point at + * it. + */ + if (vp->const_buffer == NULL) { + bo_reference(brw->vs.surf_bo[surf], NULL); + return PIPE_OK; + } + + memset(&key, 0, sizeof(key)); + + key.format = PIPE_FORMAT_R32G32B32A32_FLOAT; + key.bo = vp->const_buffer; + key.depthmode = GL_NONE; + key.pitch = params->NumParameters; + key.width = params->NumParameters; + key.height = 1; + key.depth = 1; + key.cpp = 16; + + /* + printf("%s:\n", __FUNCTION__); + printf(" width %d height %d depth %d cpp %d pitch %d\n", + key.width, key.height, key.depth, key.cpp, key.pitch); + */ + + if (brw_search_cache(&brw->surface_cache, + BRW_SS_SURFACE, + &key, sizeof(key), + &key.bo, key.bo ? 1 : 0, + NULL, + &brw->vs.surf_bo[surf])) + return PIPE_OK; + + ret = brw_create_constant_surface(brw, &key + &brw->vs.surf_bo[surf]); + if (ret) + return ret; + + return PIPE_OK; +} +#endif + + +/** + * Constructs the binding table for the VS surface state. + */ +static enum pipe_error +brw_vs_get_binding_table(struct brw_context *brw, + struct brw_winsys_buffer **bo_out) +{ +#if 0 + static GLuint data[BRW_VS_MAX_SURF]; /* always zero */ + struct brw_winsys_reloc reloc[BRW_VS_MAX_SURF]; + int i; + + /* Emit binding table relocations to surface state */ + for (i = 0; i < BRW_VS_MAX_SURF; i++) { + make_reloc(&reloc[i], + BRW_USAGE_STATE, + 0, + i * 4, + brw->vs.surf_bo[i]); + } + + ret = brw_cache_data( &brw->surface_cache, + BRW_SS_SURF_BIND, + NULL, 0, + reloc, nr_reloc, + data, sizeof data, + NULL, NULL, + bo_out); + if (ret) + return ret; + + FREE(data); + return PIPE_OK; +#else + return PIPE_OK; +#endif +} + +/** + * Vertex shader surfaces (constant buffer). + * + * This consumes the state updates for the constant buffer needing + * to be updated, and produces BRW_NEW_NR_VS_SURFACES for the VS unit and + * CACHE_NEW_SURF_BIND for the binding table upload. + */ +static enum pipe_error prepare_vs_surfaces(struct brw_context *brw ) +{ + enum pipe_error ret; + +#if 0 + int i; + int nr_surfaces = 0; + + brw_update_vs_constant_surface(ctx, SURF_INDEX_VERT_CONST_BUFFER); + + for (i = 0; i < BRW_VS_MAX_SURF; i++) { + if (brw->vs.surf_bo[i] != NULL) { + nr_surfaces = i + 1; + } + } + + if (brw->vs.nr_surfaces != nr_surfaces) { + brw->state.dirty.brw |= BRW_NEW_NR_VS_SURFACES; + brw->vs.nr_surfaces = nr_surfaces; + } +#endif + + /* Note that we don't end up updating the bind_bo if we don't have a + * surface to be pointing at. This should be relatively harmless, as it + * just slightly increases our working set size. + */ + if (brw->vs.nr_surfaces != 0) { + ret = brw_vs_get_binding_table(brw, &brw->vs.bind_bo); + if (ret) + return ret; + } + + return PIPE_OK; +} + +const struct brw_tracked_state brw_vs_surfaces = { + .dirty = { + .mesa = (PIPE_NEW_VERTEX_CONSTANTS | + PIPE_NEW_VERTEX_SHADER), + .brw = 0, + .cache = 0 + }, + .prepare = prepare_vs_surfaces, +}; + + + |