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path: root/src/gallium/auxiliary/draw/draw_pt.c
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Diffstat (limited to 'src/gallium/auxiliary/draw/draw_pt.c')
-rw-r--r--src/gallium/auxiliary/draw/draw_pt.c323
1 files changed, 323 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pt.c b/src/gallium/auxiliary/draw/draw_pt.c
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+++ b/src/gallium/auxiliary/draw/draw_pt.c
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+/**************************************************************************
+ *
+ * Copyright 2007 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.
+ *
+ **************************************************************************/
+
+ /*
+ * Authors:
+ * Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#include "draw/draw_context.h"
+#include "draw/draw_private.h"
+#include "draw/draw_pt.h"
+#include "draw/draw_vs.h"
+#include "tgsi/tgsi_dump.h"
+#include "util/u_math.h"
+
+static unsigned trim( unsigned count, unsigned first, unsigned incr )
+{
+ if (count < first)
+ return 0;
+ return count - (count - first) % incr;
+}
+
+
+
+/* Overall we split things into:
+ * - frontend -- prepare fetch_elts, draw_elts - eg vcache
+ * - middle -- fetch, shade, cliptest, viewport
+ * - pipeline -- the prim pipeline: clipping, wide lines, etc
+ * - backend -- the vbuf_render provided by the driver.
+ */
+static boolean
+draw_pt_arrays(struct draw_context *draw,
+ unsigned prim,
+ unsigned start,
+ unsigned count)
+{
+ struct draw_pt_front_end *frontend = NULL;
+ struct draw_pt_middle_end *middle = NULL;
+ unsigned opt = 0;
+
+ /* Sanitize primitive length:
+ */
+ {
+ unsigned first, incr;
+ draw_pt_split_prim(prim, &first, &incr);
+ count = trim(count, first, incr);
+ if (count < first)
+ return TRUE;
+ }
+
+ if (!draw->force_passthrough) {
+ if (!draw->render) {
+ opt |= PT_PIPELINE;
+ }
+
+ if (draw_need_pipeline(draw,
+ draw->rasterizer,
+ prim)) {
+ opt |= PT_PIPELINE;
+ }
+
+ if (!draw->bypass_clipping && !draw->pt.test_fse) {
+ opt |= PT_CLIPTEST;
+ }
+
+ if (!draw->rasterizer->bypass_vs) {
+ opt |= PT_SHADE;
+ }
+ }
+
+ if (opt == 0)
+ middle = draw->pt.middle.fetch_emit;
+ else if (opt == PT_SHADE && !draw->pt.no_fse)
+ middle = draw->pt.middle.fetch_shade_emit;
+ else
+ middle = draw->pt.middle.general;
+
+
+ /* Pick the right frontend
+ */
+ if (draw->pt.user.elts || (opt & PT_PIPELINE)) {
+ frontend = draw->pt.front.vcache;
+ } else {
+ frontend = draw->pt.front.varray;
+ }
+
+ frontend->prepare( frontend, prim, middle, opt );
+
+ frontend->run(frontend,
+ draw_pt_elt_func(draw),
+ draw_pt_elt_ptr(draw, start),
+ count);
+
+ frontend->finish( frontend );
+
+ return TRUE;
+}
+
+
+boolean draw_pt_init( struct draw_context *draw )
+{
+ draw->pt.test_fse = debug_get_bool_option("DRAW_FSE", FALSE);
+ draw->pt.no_fse = debug_get_bool_option("DRAW_NO_FSE", FALSE);
+
+ draw->pt.front.vcache = draw_pt_vcache( draw );
+ if (!draw->pt.front.vcache)
+ return FALSE;
+
+ draw->pt.front.varray = draw_pt_varray(draw);
+ if (!draw->pt.front.varray)
+ return FALSE;
+
+ draw->pt.middle.fetch_emit = draw_pt_fetch_emit( draw );
+ if (!draw->pt.middle.fetch_emit)
+ return FALSE;
+
+ draw->pt.middle.fetch_shade_emit = draw_pt_middle_fse( draw );
+ if (!draw->pt.middle.fetch_shade_emit)
+ return FALSE;
+
+ draw->pt.middle.general = draw_pt_fetch_pipeline_or_emit( draw );
+ if (!draw->pt.middle.general)
+ return FALSE;
+
+ return TRUE;
+}
+
+
+void draw_pt_destroy( struct draw_context *draw )
+{
+ if (draw->pt.middle.general) {
+ draw->pt.middle.general->destroy( draw->pt.middle.general );
+ draw->pt.middle.general = NULL;
+ }
+
+ if (draw->pt.middle.fetch_emit) {
+ draw->pt.middle.fetch_emit->destroy( draw->pt.middle.fetch_emit );
+ draw->pt.middle.fetch_emit = NULL;
+ }
+
+ if (draw->pt.middle.fetch_shade_emit) {
+ draw->pt.middle.fetch_shade_emit->destroy( draw->pt.middle.fetch_shade_emit );
+ draw->pt.middle.fetch_shade_emit = NULL;
+ }
+
+ if (draw->pt.front.vcache) {
+ draw->pt.front.vcache->destroy( draw->pt.front.vcache );
+ draw->pt.front.vcache = NULL;
+ }
+
+ if (draw->pt.front.varray) {
+ draw->pt.front.varray->destroy( draw->pt.front.varray );
+ draw->pt.front.varray = NULL;
+ }
+}
+
+
+/**
+ * Debug- print the first 'count' vertices.
+ */
+static void
+draw_print_arrays(struct draw_context *draw, uint prim, int start, uint count)
+{
+ uint i;
+
+ debug_printf("Draw arrays(prim = %u, start = %u, count = %u)\n",
+ prim, start, count);
+
+ for (i = 0; i < count; i++) {
+ uint ii, j;
+
+ if (draw->pt.user.elts) {
+ /* indexed arrays */
+ switch (draw->pt.user.eltSize) {
+ case 1:
+ {
+ const ubyte *elem = (const ubyte *) draw->pt.user.elts;
+ ii = elem[start + i];
+ }
+ break;
+ case 2:
+ {
+ const ushort *elem = (const ushort *) draw->pt.user.elts;
+ ii = elem[start + i];
+ }
+ break;
+ case 4:
+ {
+ const uint *elem = (const uint *) draw->pt.user.elts;
+ ii = elem[start + i];
+ }
+ break;
+ default:
+ assert(0);
+ }
+ debug_printf("Element[%u + %u] -> Vertex %u:\n", start, i, ii);
+ }
+ else {
+ /* non-indexed arrays */
+ ii = start + i;
+ debug_printf("Vertex %u:\n", ii);
+ }
+
+ for (j = 0; j < draw->pt.nr_vertex_elements; j++) {
+ uint buf = draw->pt.vertex_element[j].vertex_buffer_index;
+ ubyte *ptr = (ubyte *) draw->pt.user.vbuffer[buf];
+ ptr += draw->pt.vertex_buffer[buf].pitch * ii;
+ ptr += draw->pt.vertex_element[j].src_offset;
+
+ debug_printf(" Attr %u: ", j);
+ switch (draw->pt.vertex_element[j].src_format) {
+ case PIPE_FORMAT_R32_FLOAT:
+ {
+ float *v = (float *) ptr;
+ debug_printf("%f @ %p\n", v[0], (void *) v);
+ }
+ break;
+ case PIPE_FORMAT_R32G32_FLOAT:
+ {
+ float *v = (float *) ptr;
+ debug_printf("%f %f @ %p\n", v[0], v[1], (void *) v);
+ }
+ break;
+ case PIPE_FORMAT_R32G32B32_FLOAT:
+ {
+ float *v = (float *) ptr;
+ debug_printf("%f %f %f @ %p\n", v[0], v[1], v[2], (void *) v);
+ }
+ break;
+ case PIPE_FORMAT_R32G32B32A32_FLOAT:
+ {
+ float *v = (float *) ptr;
+ debug_printf("%f %f %f %f @ %p\n", v[0], v[1], v[2], v[3],
+ (void *) v);
+ }
+ break;
+ default:
+ debug_printf("other format (fix me)\n");
+ ;
+ }
+ }
+ }
+}
+
+
+/**
+ * Draw vertex arrays
+ * This is the main entrypoint into the drawing module.
+ * \param prim one of PIPE_PRIM_x
+ * \param start index of first vertex to draw
+ * \param count number of vertices to draw
+ */
+void
+draw_arrays(struct draw_context *draw, unsigned prim,
+ unsigned start, unsigned count)
+{
+ unsigned reduced_prim = draw_pt_reduced_prim(prim);
+ if (reduced_prim != draw->reduced_prim) {
+ draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
+ draw->reduced_prim = reduced_prim;
+ }
+
+ if (0)
+ draw_print_arrays(draw, prim, start, MIN2(count, 20));
+
+#if 0
+ {
+ int i;
+ debug_printf("draw_arrays(prim=%u start=%u count=%u):\n",
+ prim, start, count);
+ tgsi_dump(draw->vs.vertex_shader->state.tokens, 0);
+ debug_printf("Elements:\n");
+ for (i = 0; i < draw->pt.nr_vertex_elements; i++) {
+ debug_printf(" format=%s comps=%u\n",
+ pf_name(draw->pt.vertex_element[i].src_format),
+ draw->pt.vertex_element[i].nr_components);
+ }
+ debug_printf("Buffers:\n");
+ for (i = 0; i < draw->pt.nr_vertex_buffers; i++) {
+ debug_printf(" pitch=%u offset=%u ptr=%p\n",
+ draw->pt.vertex_buffer[i].pitch,
+ draw->pt.vertex_buffer[i].buffer_offset,
+ draw->pt.user.vbuffer[i]);
+ }
+ }
+#endif
+
+ /* drawing done here: */
+ draw_pt_arrays(draw, prim, start, count);
+}
+
+boolean draw_pt_get_edgeflag( struct draw_context *draw,
+ unsigned idx )
+{
+ if (draw->pt.user.edgeflag)
+ return (draw->pt.user.edgeflag[idx/32] & (1 << (idx%32))) != 0;
+ else
+ return 1;
+}
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