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Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_sf.c')
-rw-r--r--src/mesa/drivers/dri/i965/brw_sf.c188
1 files changed, 188 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_sf.c b/src/mesa/drivers/dri/i965/brw_sf.c
new file mode 100644
index 0000000000..d5175399d6
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/brw_sf.c
@@ -0,0 +1,188 @@
+/*
+ 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 "glheader.h"
+#include "macros.h"
+#include "enums.h"
+
+#include "intel_batchbuffer.h"
+
+#include "brw_defines.h"
+#include "brw_context.h"
+#include "brw_eu.h"
+#include "brw_util.h"
+#include "brw_sf.h"
+#include "brw_state.h"
+
+#define DO_SETUP_BITS ((1<<FRAG_ATTRIB_MAX)-1)
+
+static void compile_sf_prog( struct brw_context *brw,
+ struct brw_sf_prog_key *key )
+{
+ struct brw_sf_compile c;
+ const GLuint *program;
+ GLuint program_size;
+ GLuint i, idx;
+
+ memset(&c, 0, sizeof(c));
+
+ /* Begin the compilation:
+ */
+ brw_init_compile(&c.func);
+
+ c.key = *key;
+ c.nr_attrs = brw_count_bits(c.key.attrs);
+ c.nr_attr_regs = (c.nr_attrs+1)/2;
+ c.nr_setup_attrs = brw_count_bits(c.key.attrs & DO_SETUP_BITS);
+ c.nr_setup_regs = (c.nr_setup_attrs+1)/2;
+
+ c.prog_data.urb_read_length = c.nr_attr_regs;
+ c.prog_data.urb_entry_size = c.nr_setup_regs * 2;
+
+ /* Construct map from attribute number to position in the vertex.
+ */
+ for (i = idx = 0; i < VERT_RESULT_MAX; i++)
+ if (c.key.attrs & (1<<i)) {
+ c.attr_to_idx[i] = idx;
+ c.idx_to_attr[idx] = i;
+ idx++;
+ }
+
+ /* Which primitive? Or all three?
+ */
+ switch (key->primitive) {
+ case SF_TRIANGLES:
+ c.nr_verts = 3;
+ brw_emit_tri_setup( &c );
+ break;
+ case SF_LINES:
+ c.nr_verts = 2;
+ brw_emit_line_setup( &c );
+ break;
+ case SF_POINTS:
+ c.nr_verts = 1;
+ brw_emit_point_setup( &c );
+ break;
+ case SF_UNFILLED_TRIS:
+ c.nr_verts = 3;
+ brw_emit_anyprim_setup( &c );
+ break;
+ default:
+ assert(0);
+ return;
+ }
+
+
+ /* get the program
+ */
+ program = brw_get_program(&c.func, &program_size);
+
+ /* Upload
+ */
+ brw->sf.prog_gs_offset = brw_upload_cache( &brw->cache[BRW_SF_PROG],
+ &c.key,
+ sizeof(c.key),
+ program,
+ program_size,
+ &c.prog_data,
+ &brw->sf.prog_data );
+}
+
+
+static GLboolean search_cache( struct brw_context *brw,
+ struct brw_sf_prog_key *key )
+{
+ return brw_search_cache(&brw->cache[BRW_SF_PROG],
+ key, sizeof(*key),
+ &brw->sf.prog_data,
+ &brw->sf.prog_gs_offset);
+}
+
+
+/* Calculate interpolants for triangle and line rasterization.
+ */
+static void upload_sf_prog( struct brw_context *brw )
+{
+ struct brw_sf_prog_key key;
+
+ memset(&key, 0, sizeof(key));
+
+ /* Populate the key, noting state dependencies:
+ */
+ /* CACHE_NEW_VS_PROG */
+ key.attrs = brw->vs.prog_data->outputs_written;
+
+ /* BRW_NEW_REDUCED_PRIMITIVE */
+ switch (brw->intel.reduced_primitive) {
+ case GL_TRIANGLES:
+ /* NOTE: We just use the edgeflag attribute as an indicator that
+ * unfilled triangles are active. We don't actually do the
+ * edgeflag testing here, it is already done in the clip
+ * program.
+ */
+ if (key.attrs & (1<<VERT_RESULT_EDGE))
+ key.primitive = SF_UNFILLED_TRIS;
+ else
+ key.primitive = SF_TRIANGLES;
+ break;
+ case GL_LINES:
+ key.primitive = SF_LINES;
+ break;
+ case GL_POINTS:
+ key.primitive = SF_POINTS;
+ break;
+ }
+
+
+ /* _NEW_LIGHT */
+ key.do_flat_shading = (brw->attribs.Light->ShadeModel == GL_FLAT);
+ key.do_twoside_color = (brw->attribs.Light->Enabled && brw->attribs.Light->Model.TwoSide);
+
+ /* _NEW_POLYGON */
+ if (key.do_twoside_color)
+ key.frontface_ccw = (brw->attribs.Polygon->FrontFace == GL_CCW);
+
+
+ if (!search_cache(brw, &key))
+ compile_sf_prog( brw, &key );
+}
+
+
+const struct brw_tracked_state brw_sf_prog = {
+ .dirty = {
+ .mesa = (_NEW_LIGHT|_NEW_POLYGON),
+ .brw = (BRW_NEW_REDUCED_PRIMITIVE),
+ .cache = CACHE_NEW_VS_PROG
+ },
+ .update = upload_sf_prog
+};
+