diff options
Diffstat (limited to 'mesalib/src/mesa/state_tracker/st_atom.c')
| -rw-r--r-- | mesalib/src/mesa/state_tracker/st_atom.c | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/mesalib/src/mesa/state_tracker/st_atom.c b/mesalib/src/mesa/state_tracker/st_atom.c new file mode 100644 index 000000000..ff1f61afe --- /dev/null +++ b/mesalib/src/mesa/state_tracker/st_atom.c @@ -0,0 +1,200 @@ +/**************************************************************************
+ *
+ * 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"
+#include "st_manager.h"
+
+
+/**
+ * This is used to initialize st->atoms[].
+ */
+static const struct st_tracked_state *atoms[] =
+{
+ &st_update_depth_stencil_alpha,
+ &st_update_clip,
+
+ &st_finalize_textures,
+ &st_update_fp,
+ &st_update_gp,
+ &st_update_vp,
+
+ &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_msaa,
+ &st_update_vs_constants,
+ &st_update_gs_constants,
+ &st_update_fs_constants,
+ &st_update_pixel_transfer
+};
+
+
+void st_init_atoms( struct st_context *st )
+{
+ /* no-op */
+}
+
+
+void st_destroy_atoms( struct st_context *st )
+{
+ /* no-op */
+}
+
+
+/***********************************************************************
+ */
+
+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 )
+{
+ struct gl_context *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;
+
+ if (ctx->GeometryProgram._Current != &st->gp->Base)
+ st->dirty.st |= ST_NEW_GEOMETRY_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 );
+
+ st_manager_validate_framebuffers(st);
+
+ if (state->st == 0)
+ return;
+
+ /*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 < Elements(atoms); i++) {
+ const struct st_tracked_state *atom = atoms[i];
+ struct st_state_flags generated;
+
+ /*printf("atom %s %x/%x\n", atom->name, atom->dirty.mesa, atom->dirty.st);*/
+
+ if (!(atom->dirty.mesa || atom->dirty.st) ||
+ !atom->update) {
+ printf("malformed atom %s\n", atom->name);
+ assert(0);
+ }
+
+ if (check_state(state, &atom->dirty)) {
+ atoms[i]->update( st );
+ /*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;
+ }
+ /*printf("\n");*/
+
+ }
+ else {
+ for (i = 0; i < Elements(atoms); i++) {
+ if (check_state(state, &atoms[i]->dirty))
+ atoms[i]->update( st );
+ }
+ }
+
+ memset(state, 0, sizeof(*state));
+}
+
+
+
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