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path: root/src/gallium/auxiliary/draw/draw_pipe.c
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Diffstat (limited to 'src/gallium/auxiliary/draw/draw_pipe.c')
-rw-r--r--src/gallium/auxiliary/draw/draw_pipe.c398
1 files changed, 398 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pipe.c b/src/gallium/auxiliary/draw/draw_pipe.c
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+++ b/src/gallium/auxiliary/draw/draw_pipe.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_private.h"
+#include "draw/draw_pipe.h"
+#include "util/u_debug.h"
+
+
+
+boolean draw_pipeline_init( struct draw_context *draw )
+{
+ /* create pipeline stages */
+ draw->pipeline.wide_line = draw_wide_line_stage( draw );
+ draw->pipeline.wide_point = draw_wide_point_stage( draw );
+ draw->pipeline.stipple = draw_stipple_stage( draw );
+ draw->pipeline.unfilled = draw_unfilled_stage( draw );
+ draw->pipeline.twoside = draw_twoside_stage( draw );
+ draw->pipeline.offset = draw_offset_stage( draw );
+ draw->pipeline.clip = draw_clip_stage( draw );
+ draw->pipeline.flatshade = draw_flatshade_stage( draw );
+ draw->pipeline.cull = draw_cull_stage( draw );
+ draw->pipeline.validate = draw_validate_stage( draw );
+ draw->pipeline.first = draw->pipeline.validate;
+
+ if (!draw->pipeline.wide_line ||
+ !draw->pipeline.wide_point ||
+ !draw->pipeline.stipple ||
+ !draw->pipeline.unfilled ||
+ !draw->pipeline.twoside ||
+ !draw->pipeline.offset ||
+ !draw->pipeline.clip ||
+ !draw->pipeline.flatshade ||
+ !draw->pipeline.cull ||
+ !draw->pipeline.validate)
+ return FALSE;
+
+ /* these defaults are oriented toward the needs of softpipe */
+ draw->pipeline.wide_point_threshold = 1000000.0; /* infinity */
+ draw->pipeline.wide_line_threshold = 1.0;
+ draw->pipeline.wide_point_sprites = FALSE;
+ draw->pipeline.line_stipple = TRUE;
+ draw->pipeline.point_sprite = TRUE;
+
+ return TRUE;
+}
+
+
+void draw_pipeline_destroy( struct draw_context *draw )
+{
+ if (draw->pipeline.wide_line)
+ draw->pipeline.wide_line->destroy( draw->pipeline.wide_line );
+ if (draw->pipeline.wide_point)
+ draw->pipeline.wide_point->destroy( draw->pipeline.wide_point );
+ if (draw->pipeline.stipple)
+ draw->pipeline.stipple->destroy( draw->pipeline.stipple );
+ if (draw->pipeline.unfilled)
+ draw->pipeline.unfilled->destroy( draw->pipeline.unfilled );
+ if (draw->pipeline.twoside)
+ draw->pipeline.twoside->destroy( draw->pipeline.twoside );
+ if (draw->pipeline.offset)
+ draw->pipeline.offset->destroy( draw->pipeline.offset );
+ if (draw->pipeline.clip)
+ draw->pipeline.clip->destroy( draw->pipeline.clip );
+ if (draw->pipeline.flatshade)
+ draw->pipeline.flatshade->destroy( draw->pipeline.flatshade );
+ if (draw->pipeline.cull)
+ draw->pipeline.cull->destroy( draw->pipeline.cull );
+ if (draw->pipeline.validate)
+ draw->pipeline.validate->destroy( draw->pipeline.validate );
+ if (draw->pipeline.aaline)
+ draw->pipeline.aaline->destroy( draw->pipeline.aaline );
+ if (draw->pipeline.aapoint)
+ draw->pipeline.aapoint->destroy( draw->pipeline.aapoint );
+ if (draw->pipeline.pstipple)
+ draw->pipeline.pstipple->destroy( draw->pipeline.pstipple );
+ if (draw->pipeline.rasterize)
+ draw->pipeline.rasterize->destroy( draw->pipeline.rasterize );
+}
+
+
+
+/**
+ * Build primitive to render a point with vertex at v0.
+ */
+static void do_point( struct draw_context *draw,
+ const char *v0 )
+{
+ struct prim_header prim;
+
+ prim.flags = 0;
+ prim.pad = 0;
+ prim.v[0] = (struct vertex_header *)v0;
+
+ draw->pipeline.first->point( draw->pipeline.first, &prim );
+}
+
+
+/**
+ * Build primitive to render a line with vertices at v0, v1.
+ * \param flags bitmask of DRAW_PIPE_EDGE_x, DRAW_PIPE_RESET_STIPPLE
+ */
+static void do_line( struct draw_context *draw,
+ ushort flags,
+ const char *v0,
+ const char *v1 )
+{
+ struct prim_header prim;
+
+ prim.flags = flags;
+ prim.pad = 0;
+ prim.v[0] = (struct vertex_header *)v0;
+ prim.v[1] = (struct vertex_header *)v1;
+
+ draw->pipeline.first->line( draw->pipeline.first, &prim );
+}
+
+
+/**
+ * Build primitive to render a triangle with vertices at v0, v1, v2.
+ * \param flags bitmask of DRAW_PIPE_EDGE_x, DRAW_PIPE_RESET_STIPPLE
+ */
+static void do_triangle( struct draw_context *draw,
+ ushort flags,
+ char *v0,
+ char *v1,
+ char *v2 )
+{
+ struct prim_header prim;
+
+ prim.v[0] = (struct vertex_header *)v0;
+ prim.v[1] = (struct vertex_header *)v1;
+ prim.v[2] = (struct vertex_header *)v2;
+ prim.flags = flags;
+ prim.pad = 0;
+
+ draw->pipeline.first->tri( draw->pipeline.first, &prim );
+}
+
+
+/*
+ * Set up macros for draw_pt_decompose.h template code.
+ * This code uses vertex indexes / elements.
+ */
+
+/* emit first quad vertex as first vertex in triangles */
+#define QUAD_FIRST_PV(i0,i1,i2,i3) \
+ do_triangle( draw, \
+ ( DRAW_PIPE_RESET_STIPPLE | \
+ DRAW_PIPE_EDGE_FLAG_0 | \
+ DRAW_PIPE_EDGE_FLAG_1 ), \
+ verts + stride * elts[i0], \
+ verts + stride * elts[i1], \
+ verts + stride * elts[i2]); \
+ do_triangle( draw, \
+ ( DRAW_PIPE_EDGE_FLAG_1 | \
+ DRAW_PIPE_EDGE_FLAG_2 ), \
+ verts + stride * elts[i0], \
+ verts + stride * elts[i2], \
+ verts + stride * elts[i3])
+
+/* emit last quad vertex as last vertex in triangles */
+#define QUAD_LAST_PV(i0,i1,i2,i3) \
+ do_triangle( draw, \
+ ( DRAW_PIPE_RESET_STIPPLE | \
+ DRAW_PIPE_EDGE_FLAG_0 | \
+ DRAW_PIPE_EDGE_FLAG_2 ), \
+ verts + stride * elts[i0], \
+ verts + stride * elts[i1], \
+ verts + stride * elts[i3]); \
+ do_triangle( draw, \
+ ( DRAW_PIPE_EDGE_FLAG_0 | \
+ DRAW_PIPE_EDGE_FLAG_1 ), \
+ verts + stride * elts[i1], \
+ verts + stride * elts[i2], \
+ verts + stride * elts[i3])
+
+#define TRIANGLE(flags,i0,i1,i2) \
+ do_triangle( draw, \
+ elts[i0], /* flags */ \
+ verts + stride * (elts[i0] & ~DRAW_PIPE_FLAG_MASK), \
+ verts + stride * (elts[i1] & ~DRAW_PIPE_FLAG_MASK), \
+ verts + stride * (elts[i2] & ~DRAW_PIPE_FLAG_MASK) );
+
+#define LINE(flags,i0,i1) \
+ do_line( draw, \
+ elts[i0], \
+ verts + stride * (elts[i0] & ~DRAW_PIPE_FLAG_MASK), \
+ verts + stride * (elts[i1] & ~DRAW_PIPE_FLAG_MASK) );
+
+#define POINT(i0) \
+ do_point( draw, \
+ verts + stride * elts[i0] )
+
+#define FUNC pipe_run
+#define ARGS \
+ struct draw_context *draw, \
+ unsigned prim, \
+ struct vertex_header *vertices, \
+ unsigned stride, \
+ const ushort *elts
+
+#define LOCAL_VARS \
+ char *verts = (char *)vertices; \
+ boolean flatfirst = (draw->rasterizer->flatshade && \
+ draw->rasterizer->flatshade_first); \
+ unsigned i; \
+ ushort flags
+
+#define FLUSH
+
+#include "draw_pt_decompose.h"
+#undef ARGS
+#undef LOCAL_VARS
+
+
+
+/**
+ * Code to run the pipeline on a fairly arbitrary collection of vertices.
+ * For drawing indexed primitives.
+ *
+ * Vertex headers must be pre-initialized with the
+ * UNDEFINED_VERTEX_ID, this code will cause that id to become
+ * overwritten, so it may have to be reset if there is the intention
+ * to reuse the vertices.
+ *
+ * This code provides a callback to reset the vertex id's which the
+ * draw_vbuf.c code uses when it has to perform a flush.
+ */
+void draw_pipeline_run( struct draw_context *draw,
+ const struct draw_vertex_info *vert_info,
+ const struct draw_prim_info *prim_info)
+{
+ unsigned i, start;
+
+ draw->pipeline.verts = (char *)vert_info->verts;
+ draw->pipeline.vertex_stride = vert_info->stride;
+ draw->pipeline.vertex_count = vert_info->count;
+
+ for (start = i = 0;
+ i < prim_info->primitive_count;
+ start += prim_info->primitive_lengths[i], i++)
+ {
+ unsigned count = prim_info->primitive_lengths[i];
+
+ pipe_run(draw,
+ prim_info->prim,
+ vert_info->verts,
+ vert_info->stride,
+ prim_info->elts + start,
+ count);
+ }
+
+ draw->pipeline.verts = NULL;
+ draw->pipeline.vertex_count = 0;
+}
+
+
+/*
+ * Set up macros for draw_pt_decompose.h template code.
+ * This code is for non-indexed (aka linear) rendering (no elts).
+ */
+
+/* emit first quad vertex as first vertex in triangles */
+#define QUAD_FIRST_PV(i0,i1,i2,i3) \
+ do_triangle( draw, \
+ ( DRAW_PIPE_RESET_STIPPLE | \
+ DRAW_PIPE_EDGE_FLAG_0 | \
+ DRAW_PIPE_EDGE_FLAG_1 ), \
+ verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \
+ verts + stride * (i1), \
+ verts + stride * (i2)); \
+ do_triangle( draw, \
+ ( DRAW_PIPE_EDGE_FLAG_1 | \
+ DRAW_PIPE_EDGE_FLAG_2 ), \
+ verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \
+ verts + stride * (i2), \
+ verts + stride * (i3))
+
+/* emit last quad vertex as last vertex in triangles */
+#define QUAD_LAST_PV(i0,i1,i2,i3) \
+ do_triangle( draw, \
+ ( DRAW_PIPE_RESET_STIPPLE | \
+ DRAW_PIPE_EDGE_FLAG_0 | \
+ DRAW_PIPE_EDGE_FLAG_2 ), \
+ verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \
+ verts + stride * (i1), \
+ verts + stride * (i3)); \
+ do_triangle( draw, \
+ ( DRAW_PIPE_EDGE_FLAG_0 | \
+ DRAW_PIPE_EDGE_FLAG_1 ), \
+ verts + stride * ((i1) & ~DRAW_PIPE_FLAG_MASK), \
+ verts + stride * (i2), \
+ verts + stride * (i3))
+
+#define TRIANGLE(flags,i0,i1,i2) \
+ do_triangle( draw, \
+ flags, /* flags */ \
+ verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \
+ verts + stride * (i1), \
+ verts + stride * (i2))
+
+#define LINE(flags,i0,i1) \
+ do_line( draw, \
+ flags, \
+ verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \
+ verts + stride * (i1))
+
+#define POINT(i0) \
+ do_point( draw, \
+ verts + stride * i0 )
+
+#define FUNC pipe_run_linear
+#define ARGS \
+ struct draw_context *draw, \
+ unsigned prim, \
+ struct vertex_header *vertices, \
+ unsigned stride
+
+#define LOCAL_VARS \
+ char *verts = (char *)vertices; \
+ boolean flatfirst = (draw->rasterizer->flatshade && \
+ draw->rasterizer->flatshade_first); \
+ unsigned i; \
+ ushort flags
+
+#define FLUSH
+
+#include "draw_pt_decompose.h"
+
+
+/*
+ * For drawing non-indexed primitives.
+ */
+void draw_pipeline_run_linear( struct draw_context *draw,
+ const struct draw_vertex_info *vert_info,
+ const struct draw_prim_info *prim_info)
+{
+ unsigned i, start;
+
+ for (start = i = 0;
+ i < prim_info->primitive_count;
+ start += prim_info->primitive_lengths[i], i++)
+ {
+ unsigned count = prim_info->primitive_lengths[i];
+ char *verts = ((char*)vert_info->verts) +
+ (start * vert_info->stride);
+
+ draw->pipeline.verts = verts;
+ draw->pipeline.vertex_stride = vert_info->stride;
+ draw->pipeline.vertex_count = count;
+
+ pipe_run_linear(draw,
+ prim_info->prim,
+ (struct vertex_header*)verts,
+ vert_info->stride,
+ count);
+ }
+
+ draw->pipeline.verts = NULL;
+ draw->pipeline.vertex_count = 0;
+}
+
+
+void draw_pipeline_flush( struct draw_context *draw,
+ unsigned flags )
+{
+ draw->pipeline.first->flush( draw->pipeline.first, flags );
+ draw->pipeline.first = draw->pipeline.validate;
+}
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