| /************************************************************************** |
| * |
| * Copyright 2003 VMware, Inc. |
| * All Rights Reserved. |
| * |
| * 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, sub license, 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 NON-INFRINGEMENT. |
| * IN NO EVENT SHALL VMWARE 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. |
| * |
| **************************************************************************/ |
| |
| |
| #include <stdio.h> |
| #include "main/arrayobj.h" |
| #include "main/glheader.h" |
| #include "main/context.h" |
| |
| #include "pipe/p_defines.h" |
| #include "st_context.h" |
| #include "st_atom.h" |
| #include "st_program.h" |
| #include "st_manager.h" |
| #include "st_util.h" |
| |
| |
| typedef void (*update_func_t)(struct st_context *st); |
| |
| /* The list state update functions. */ |
| static const update_func_t update_functions[] = |
| { |
| #define ST_STATE(FLAG, st_update) st_update, |
| #include "st_atom_list.h" |
| #undef ST_STATE |
| }; |
| |
| |
| void st_init_atoms( struct st_context *st ) |
| { |
| STATIC_ASSERT(ARRAY_SIZE(update_functions) <= 64); |
| } |
| |
| |
| void st_destroy_atoms( struct st_context *st ) |
| { |
| /* no-op */ |
| } |
| |
| |
| /* Too complex to figure out, just check every time: |
| */ |
| static void check_program_state( struct st_context *st ) |
| { |
| struct gl_context *ctx = st->ctx; |
| struct st_vertex_program *old_vp = st->vp; |
| struct st_common_program *old_tcp = st->tcp; |
| struct st_common_program *old_tep = st->tep; |
| struct st_common_program *old_gp = st->gp; |
| struct st_fragment_program *old_fp = st->fp; |
| |
| struct gl_program *new_vp = ctx->VertexProgram._Current; |
| struct gl_program *new_tcp = ctx->TessCtrlProgram._Current; |
| struct gl_program *new_tep = ctx->TessEvalProgram._Current; |
| struct gl_program *new_gp = ctx->GeometryProgram._Current; |
| struct gl_program *new_fp = ctx->FragmentProgram._Current; |
| uint64_t dirty = 0; |
| unsigned num_viewports = 1; |
| |
| /* Flag states used by both new and old shaders to unbind shader resources |
| * properly when transitioning to shaders that don't use them. |
| */ |
| if (unlikely(new_vp != &old_vp->Base)) { |
| if (old_vp) |
| dirty |= old_vp->affected_states; |
| if (new_vp) |
| dirty |= ST_NEW_VERTEX_PROGRAM(st, st_vertex_program(new_vp)); |
| } |
| |
| if (unlikely(new_tcp != &old_tcp->Base)) { |
| if (old_tcp) |
| dirty |= old_tcp->affected_states; |
| if (new_tcp) |
| dirty |= st_common_program(new_tcp)->affected_states; |
| } |
| |
| if (unlikely(new_tep != &old_tep->Base)) { |
| if (old_tep) |
| dirty |= old_tep->affected_states; |
| if (new_tep) |
| dirty |= st_common_program(new_tep)->affected_states; |
| } |
| |
| if (unlikely(new_gp != &old_gp->Base)) { |
| if (old_gp) |
| dirty |= old_gp->affected_states; |
| if (new_gp) |
| dirty |= st_common_program(new_gp)->affected_states; |
| } |
| |
| if (unlikely(new_fp != &old_fp->Base)) { |
| if (old_fp) |
| dirty |= old_fp->affected_states; |
| if (new_fp) |
| dirty |= st_fragment_program(new_fp)->affected_states; |
| } |
| |
| /* Find out the number of viewports. This determines how many scissors |
| * and viewport states we need to update. |
| */ |
| struct gl_program *last_prim_shader = new_gp ? new_gp : |
| new_tep ? new_tep : new_vp; |
| if (last_prim_shader && |
| last_prim_shader->info.outputs_written & VARYING_BIT_VIEWPORT) |
| num_viewports = ctx->Const.MaxViewports; |
| |
| if (st->state.num_viewports != num_viewports) { |
| st->state.num_viewports = num_viewports; |
| dirty |= ST_NEW_VIEWPORT; |
| |
| if (ctx->Scissor.EnableFlags & u_bit_consecutive(0, num_viewports)) |
| dirty |= ST_NEW_SCISSOR; |
| } |
| |
| st->dirty |= dirty; |
| } |
| |
| static void check_attrib_edgeflag(struct st_context *st) |
| { |
| GLboolean vertdata_edgeflags, edgeflag_culls_prims, edgeflags_enabled; |
| struct gl_program *vp = st->ctx->VertexProgram._Current; |
| |
| edgeflags_enabled = st->ctx->Polygon.FrontMode != GL_FILL || |
| st->ctx->Polygon.BackMode != GL_FILL; |
| |
| vertdata_edgeflags = edgeflags_enabled && |
| _mesa_draw_edge_flag_array_enabled(st->ctx); |
| |
| if (vertdata_edgeflags != st->vertdata_edgeflags) { |
| st->vertdata_edgeflags = vertdata_edgeflags; |
| if (vp) |
| st->dirty |= ST_NEW_VERTEX_PROGRAM(st, st_vertex_program(vp)); |
| } |
| |
| edgeflag_culls_prims = edgeflags_enabled && !vertdata_edgeflags && |
| !st->ctx->Current.Attrib[VERT_ATTRIB_EDGEFLAG][0]; |
| if (edgeflag_culls_prims != st->edgeflag_culls_prims) { |
| st->edgeflag_culls_prims = edgeflag_culls_prims; |
| st->dirty |= ST_NEW_RASTERIZER; |
| } |
| } |
| |
| |
| /*********************************************************************** |
| * Update all derived state: |
| */ |
| |
| void st_validate_state( struct st_context *st, enum st_pipeline pipeline ) |
| { |
| struct gl_context *ctx = st->ctx; |
| uint64_t dirty, pipeline_mask; |
| uint32_t dirty_lo, dirty_hi; |
| |
| /* Get Mesa driver state. |
| * |
| * Inactive states are shader states not used by shaders at the moment. |
| */ |
| st->dirty |= ctx->NewDriverState & st->active_states & ST_ALL_STATES_MASK; |
| ctx->NewDriverState = 0; |
| |
| /* Get pipeline state. */ |
| switch (pipeline) { |
| case ST_PIPELINE_RENDER: |
| if (st->ctx->API == API_OPENGL_COMPAT) |
| check_attrib_edgeflag(st); |
| |
| if (st->gfx_shaders_may_be_dirty) { |
| check_program_state(st); |
| st->gfx_shaders_may_be_dirty = false; |
| } |
| |
| st_manager_validate_framebuffers(st); |
| |
| pipeline_mask = ST_PIPELINE_RENDER_STATE_MASK; |
| break; |
| |
| case ST_PIPELINE_CLEAR: |
| st_manager_validate_framebuffers(st); |
| pipeline_mask = ST_PIPELINE_CLEAR_STATE_MASK; |
| break; |
| |
| case ST_PIPELINE_META: |
| if (st->gfx_shaders_may_be_dirty) { |
| check_program_state(st); |
| st->gfx_shaders_may_be_dirty = false; |
| } |
| |
| st_manager_validate_framebuffers(st); |
| pipeline_mask = ST_PIPELINE_META_STATE_MASK; |
| break; |
| |
| case ST_PIPELINE_UPDATE_FRAMEBUFFER: |
| st_manager_validate_framebuffers(st); |
| pipeline_mask = ST_PIPELINE_UPDATE_FB_STATE_MASK; |
| break; |
| |
| case ST_PIPELINE_COMPUTE: { |
| struct st_compute_program *old_cp = st->cp; |
| struct gl_program *new_cp = ctx->ComputeProgram._Current; |
| |
| if (new_cp != &old_cp->Base) { |
| if (old_cp) |
| st->dirty |= old_cp->affected_states; |
| assert(new_cp); |
| st->dirty |= st_compute_program(new_cp)->affected_states; |
| } |
| |
| st->compute_shader_may_be_dirty = false; |
| |
| /* |
| * We add the ST_NEW_FB_STATE bit here as well, because glBindFramebuffer |
| * acts as a barrier that breaks feedback loops between the framebuffer |
| * and textures bound to the framebuffer, even when those textures are |
| * accessed by compute shaders; so we must inform the driver of new |
| * framebuffer state. |
| */ |
| pipeline_mask = ST_PIPELINE_COMPUTE_STATE_MASK | ST_NEW_FB_STATE; |
| break; |
| } |
| |
| default: |
| unreachable("Invalid pipeline specified"); |
| } |
| |
| dirty = st->dirty & pipeline_mask; |
| if (!dirty) |
| return; |
| |
| dirty_lo = dirty; |
| dirty_hi = dirty >> 32; |
| |
| /* Update states. |
| * |
| * Don't use u_bit_scan64, it may be slower on 32-bit. |
| */ |
| while (dirty_lo) |
| update_functions[u_bit_scan(&dirty_lo)](st); |
| while (dirty_hi) |
| update_functions[32 + u_bit_scan(&dirty_hi)](st); |
| |
| /* Clear the render or compute state bits. */ |
| st->dirty &= ~pipeline_mask; |
| } |