diff options
Diffstat (limited to 'src/mesa/state_tracker/st_atom.c')
| -rw-r--r-- | src/mesa/state_tracker/st_atom.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_atom.c b/src/mesa/state_tracker/st_atom.c new file mode 100644 index 0000000000..fc8587f459 --- /dev/null +++ b/src/mesa/state_tracker/st_atom.c @@ -0,0 +1,218 @@ +/************************************************************************** + * + * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * 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 TUNGSTEN GRAPHICS 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 "main/glheader.h" +#include "main/context.h" + +#include "pipe/p_defines.h" +#include "st_context.h" +#include "st_atom.h" +#include "st_cb_bitmap.h" +#include "st_program.h" + + + +/* This is used to initialize st->atoms[]. We could use this list + * directly except for a single atom, st_update_constants, which has a + * .dirty value which changes according to the parameters of the + * current fragment and vertex programs, and so cannot be a static + * value. + */ +static const struct st_tracked_state *atoms[] = +{ + &st_update_depth_stencil_alpha, + &st_update_clip, + + &st_finalize_textures, + &st_update_shader, + + &st_update_rasterizer, + &st_update_polygon_stipple, + &st_update_viewport, + &st_update_scissor, + &st_update_blend, + &st_update_sampler, + &st_update_texture, + &st_update_framebuffer, + &st_update_vs_constants, + &st_update_fs_constants, + &st_update_pixel_transfer +}; + + +void st_init_atoms( struct st_context *st ) +{ + GLuint i; + + st->atoms = malloc(sizeof(atoms)); + st->nr_atoms = sizeof(atoms)/sizeof(*atoms); + memcpy(st->atoms, atoms, sizeof(atoms)); + + /* Patch in a pointer to the dynamic state atom: + */ + for (i = 0; i < st->nr_atoms; i++) { + if (st->atoms[i] == &st_update_vs_constants) { + st->atoms[i] = &st->constants.tracked_state[PIPE_SHADER_VERTEX]; + st->atoms[i][0] = st_update_vs_constants; + } + + if (st->atoms[i] == &st_update_fs_constants) { + st->atoms[i] = &st->constants.tracked_state[PIPE_SHADER_FRAGMENT]; + st->atoms[i][0] = st_update_fs_constants; + } + } +} + + +void st_destroy_atoms( struct st_context *st ) +{ + if (st->atoms) { + free(st->atoms); + st->atoms = NULL; + } +} + + +/*********************************************************************** + */ + +static GLboolean check_state( const struct st_state_flags *a, + const struct st_state_flags *b ) +{ + return ((a->mesa & b->mesa) || + (a->st & b->st)); +} + +static void accumulate_state( struct st_state_flags *a, + const struct st_state_flags *b ) +{ + a->mesa |= b->mesa; + a->st |= b->st; +} + + +static void xor_states( struct st_state_flags *result, + const struct st_state_flags *a, + const struct st_state_flags *b ) +{ + result->mesa = a->mesa ^ b->mesa; + result->st = a->st ^ b->st; +} + + +/* Too complex to figure out, just check every time: + */ +static void check_program_state( struct st_context *st ) +{ + GLcontext *ctx = st->ctx; + + if (ctx->VertexProgram._Current != &st->vp->Base) + st->dirty.st |= ST_NEW_VERTEX_PROGRAM; + + if (ctx->FragmentProgram._Current != &st->fp->Base) + st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM; + +} + + +/*********************************************************************** + * Update all derived state: + */ + +void st_validate_state( struct st_context *st ) +{ + struct st_state_flags *state = &st->dirty; + GLuint i; + + /* The bitmap cache is immune to pixel unpack changes. + * Note that GLUT makes several calls to glPixelStore for each + * bitmap char it draws so this is an important check. + */ + if (state->mesa & ~_NEW_PACKUNPACK) + st_flush_bitmap_cache(st); + + check_program_state( st ); + + if (state->st == 0) + return; + +// _mesa_printf("%s %x/%x\n", __FUNCTION__, state->mesa, state->st); + + if (1) { + /* Debug version which enforces various sanity checks on the + * state flags which are generated and checked to help ensure + * state atoms are ordered correctly in the list. + */ + struct st_state_flags examined, prev; + memset(&examined, 0, sizeof(examined)); + prev = *state; + + for (i = 0; i < st->nr_atoms; i++) { + const struct st_tracked_state *atom = st->atoms[i]; + struct st_state_flags generated; + +// _mesa_printf("atom %s %x/%x\n", atom->name, atom->dirty.mesa, atom->dirty.st); + + if (!(atom->dirty.mesa || atom->dirty.st) || + !atom->update) { + _mesa_printf("malformed atom %s\n", atom->name); + assert(0); + } + + if (check_state(state, &atom->dirty)) { + st->atoms[i]->update( st ); +// _mesa_printf("after: %x\n", atom->dirty.mesa); + } + + accumulate_state(&examined, &atom->dirty); + + /* generated = (prev ^ state) + * if (examined & generated) + * fail; + */ + xor_states(&generated, &prev, state); + assert(!check_state(&examined, &generated)); + prev = *state; + } +// _mesa_printf("\n"); + + } + else { + const GLuint nr = st->nr_atoms; + + for (i = 0; i < nr; i++) { + if (check_state(state, &st->atoms[i]->dirty)) + st->atoms[i]->update( st ); + } + } + + memset(state, 0, sizeof(*state)); +} + + + |