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path: root/src/gallium/auxiliary/draw/draw_vbuf.c
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Diffstat (limited to 'src/gallium/auxiliary/draw/draw_vbuf.c')
-rw-r--r--src/gallium/auxiliary/draw/draw_vbuf.c570
1 files changed, 570 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_vbuf.c b/src/gallium/auxiliary/draw/draw_vbuf.c
new file mode 100644
index 0000000000..71ac73912b
--- /dev/null
+++ b/src/gallium/auxiliary/draw/draw_vbuf.c
@@ -0,0 +1,570 @@
+/**************************************************************************
+ *
+ * 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.
+ *
+ **************************************************************************/
+
+/**
+ * \file
+ * Vertex buffer drawing stage.
+ *
+ * \author José Fonseca <jrfonsec@tungstengraphics.com>
+ * \author Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+
+#include "pipe/p_debug.h"
+#include "pipe/p_util.h"
+
+#include "draw_vbuf.h"
+#include "draw_private.h"
+#include "draw_vertex.h"
+#include "draw_vf.h"
+
+
+/**
+ * Vertex buffer emit stage.
+ */
+struct vbuf_stage {
+ struct draw_stage stage; /**< This must be first (base class) */
+
+ struct vbuf_render *render;
+
+ const struct vertex_info *vinfo;
+
+ /** Vertex size in bytes */
+ unsigned vertex_size;
+
+ struct draw_vertex_fetch *vf;
+
+ /* FIXME: we have no guarantee that 'unsigned' is 32bit */
+
+ /** Vertices in hardware format */
+ unsigned *vertices;
+ unsigned *vertex_ptr;
+ unsigned max_vertices;
+ unsigned nr_vertices;
+
+ /** Indices */
+ ushort *indices;
+ unsigned max_indices;
+ unsigned nr_indices;
+
+ /** Pipe primitive */
+ unsigned prim;
+};
+
+
+/**
+ * Basically a cast wrapper.
+ */
+static INLINE struct vbuf_stage *
+vbuf_stage( struct draw_stage *stage )
+{
+ assert(stage);
+ return (struct vbuf_stage *)stage;
+}
+
+
+static void vbuf_flush_indices( struct vbuf_stage *vbuf );
+static void vbuf_flush_vertices( struct vbuf_stage *vbuf );
+static void vbuf_alloc_vertices( struct vbuf_stage *vbuf );
+
+
+static INLINE boolean
+overflow( void *map, void *ptr, unsigned bytes, unsigned bufsz )
+{
+ unsigned long used = (unsigned long) ((char *)ptr - (char *)map);
+ return (used + bytes) > bufsz;
+}
+
+
+static INLINE void
+check_space( struct vbuf_stage *vbuf, unsigned nr )
+{
+ if (vbuf->nr_vertices + nr > vbuf->max_vertices ) {
+ vbuf_flush_vertices(vbuf);
+ vbuf_alloc_vertices(vbuf);
+ }
+
+ if (vbuf->nr_indices + nr > vbuf->max_indices )
+ vbuf_flush_indices(vbuf);
+}
+
+
+#if 0
+static INLINE void
+dump_emitted_vertex(const struct vertex_info *vinfo, const uint8_t *data)
+{
+ assert(vinfo == vbuf->render->get_vertex_info(vbuf->render));
+ unsigned i, j, k;
+
+ for (i = 0; i < vinfo->num_attribs; i++) {
+ j = vinfo->src_index[i];
+ switch (vinfo->emit[i]) {
+ case EMIT_OMIT:
+ debug_printf("EMIT_OMIT:");
+ break;
+ case EMIT_ALL:
+ assert(i == 0);
+ assert(j == 0);
+ debug_printf("EMIT_ALL:\t");
+ for(k = 0; k < vinfo->size*4; ++k)
+ debug_printf("%02x ", *data++);
+ break;
+ case EMIT_1F:
+ debug_printf("EMIT_1F:\t");
+ debug_printf("%f ", *(float *)data); data += sizeof(float);
+ break;
+ case EMIT_1F_PSIZE:
+ debug_printf("EMIT_1F_PSIZE:\t");
+ debug_printf("%f ", *(float *)data); data += sizeof(float);
+ break;
+ case EMIT_2F:
+ debug_printf("EMIT_2F:\t");
+ debug_printf("%f ", *(float *)data); data += sizeof(float);
+ debug_printf("%f ", *(float *)data); data += sizeof(float);
+ break;
+ case EMIT_3F:
+ debug_printf("EMIT_3F:\t");
+ debug_printf("%f ", *(float *)data); data += sizeof(float);
+ debug_printf("%f ", *(float *)data); data += sizeof(float);
+ debug_printf("%f ", *(float *)data); data += sizeof(float);
+ data += sizeof(float);
+ break;
+ case EMIT_4F:
+ debug_printf("EMIT_4F:\t");
+ debug_printf("%f ", *(float *)data); data += sizeof(float);
+ debug_printf("%f ", *(float *)data); data += sizeof(float);
+ debug_printf("%f ", *(float *)data); data += sizeof(float);
+ debug_printf("%f ", *(float *)data); data += sizeof(float);
+ break;
+ case EMIT_4UB:
+ debug_printf("EMIT_4UB:\t");
+ debug_printf("%u ", *data++);
+ debug_printf("%u ", *data++);
+ debug_printf("%u ", *data++);
+ debug_printf("%u ", *data++);
+ break;
+ default:
+ assert(0);
+ }
+ debug_printf("\n");
+ }
+ debug_printf("\n");
+}
+#endif
+
+
+/**
+ * Extract the needed fields from post-transformed vertex and emit
+ * a hardware(driver) vertex.
+ * Recall that the vertices are constructed by the 'draw' module and
+ * have a couple of slots at the beginning (1-dword header, 4-dword
+ * clip pos) that we ignore here. We only use the vertex->data[] fields.
+ */
+static INLINE void
+emit_vertex( struct vbuf_stage *vbuf,
+ struct vertex_header *vertex )
+{
+#if 0
+ debug_printf("emit vertex %d to %p\n",
+ vbuf->nr_vertices, vbuf->vertex_ptr);
+#endif
+
+ if(vertex->vertex_id != UNDEFINED_VERTEX_ID) {
+ if(vertex->vertex_id < vbuf->nr_vertices)
+ return;
+ else
+ debug_printf("Bad vertex id 0x%04x (>= 0x%04x)\n",
+ vertex->vertex_id, vbuf->nr_vertices);
+ return;
+ }
+
+ vertex->vertex_id = vbuf->nr_vertices++;
+
+ if(!vbuf->vf) {
+ const struct vertex_info *vinfo = vbuf->vinfo;
+ uint i;
+ uint count = 0; /* for debug/sanity */
+
+ assert(vinfo == vbuf->render->get_vertex_info(vbuf->render));
+
+ for (i = 0; i < vinfo->num_attribs; i++) {
+ uint j = vinfo->src_index[i];
+ switch (vinfo->emit[i]) {
+ case EMIT_OMIT:
+ /* no-op */
+ break;
+ case EMIT_ALL:
+ /* just copy the whole vertex as-is to the vbuf */
+ assert(i == 0);
+ assert(j == 0);
+ memcpy(vbuf->vertex_ptr, vertex, vinfo->size * 4);
+ vbuf->vertex_ptr += vinfo->size;
+ count += vinfo->size;
+ break;
+ case EMIT_1F:
+ *vbuf->vertex_ptr++ = fui(vertex->data[j][0]);
+ count++;
+ break;
+ case EMIT_1F_PSIZE:
+ *vbuf->vertex_ptr++ = fui(vbuf->stage.draw->rasterizer->point_size);
+ count++;
+ break;
+ case EMIT_2F:
+ *vbuf->vertex_ptr++ = fui(vertex->data[j][0]);
+ *vbuf->vertex_ptr++ = fui(vertex->data[j][1]);
+ count += 2;
+ break;
+ case EMIT_3F:
+ *vbuf->vertex_ptr++ = fui(vertex->data[j][0]);
+ *vbuf->vertex_ptr++ = fui(vertex->data[j][1]);
+ *vbuf->vertex_ptr++ = fui(vertex->data[j][2]);
+ count += 3;
+ break;
+ case EMIT_4F:
+ *vbuf->vertex_ptr++ = fui(vertex->data[j][0]);
+ *vbuf->vertex_ptr++ = fui(vertex->data[j][1]);
+ *vbuf->vertex_ptr++ = fui(vertex->data[j][2]);
+ *vbuf->vertex_ptr++ = fui(vertex->data[j][3]);
+ count += 4;
+ break;
+ case EMIT_4UB:
+ *vbuf->vertex_ptr++ = pack_ub4(float_to_ubyte( vertex->data[j][2] ),
+ float_to_ubyte( vertex->data[j][1] ),
+ float_to_ubyte( vertex->data[j][0] ),
+ float_to_ubyte( vertex->data[j][3] ));
+ count += 1;
+ break;
+ default:
+ assert(0);
+ }
+ }
+ assert(count == vinfo->size);
+#if 0
+ {
+ static float data[256];
+ draw_vf_emit_vertex(vbuf->vf, vertex, data);
+ if(memcmp((uint8_t *)vbuf->vertex_ptr - vbuf->vertex_size, data, vbuf->vertex_size)) {
+ debug_printf("With VF:\n");
+ dump_emitted_vertex(vbuf->vinfo, (uint8_t *)data);
+ debug_printf("Without VF:\n");
+ dump_emitted_vertex(vbuf->vinfo, (uint8_t *)vbuf->vertex_ptr - vbuf->vertex_size);
+ assert(0);
+ }
+ }
+#endif
+ }
+ else {
+ draw_vf_emit_vertex(vbuf->vf, vertex, vbuf->vertex_ptr);
+
+ vbuf->vertex_ptr += vbuf->vertex_size/4;
+ }
+}
+
+
+static void
+vbuf_tri( struct draw_stage *stage,
+ struct prim_header *prim )
+{
+ struct vbuf_stage *vbuf = vbuf_stage( stage );
+ unsigned i;
+
+ check_space( vbuf, 3 );
+
+ for (i = 0; i < 3; i++) {
+ emit_vertex( vbuf, prim->v[i] );
+
+ vbuf->indices[vbuf->nr_indices++] = (ushort) prim->v[i]->vertex_id;
+ }
+}
+
+
+static void
+vbuf_line( struct draw_stage *stage,
+ struct prim_header *prim )
+{
+ struct vbuf_stage *vbuf = vbuf_stage( stage );
+ unsigned i;
+
+ check_space( vbuf, 2 );
+
+ for (i = 0; i < 2; i++) {
+ emit_vertex( vbuf, prim->v[i] );
+
+ vbuf->indices[vbuf->nr_indices++] = (ushort) prim->v[i]->vertex_id;
+ }
+}
+
+
+static void
+vbuf_point( struct draw_stage *stage,
+ struct prim_header *prim )
+{
+ struct vbuf_stage *vbuf = vbuf_stage( stage );
+
+ check_space( vbuf, 1 );
+
+ emit_vertex( vbuf, prim->v[0] );
+
+ vbuf->indices[vbuf->nr_indices++] = (ushort) prim->v[0]->vertex_id;
+}
+
+
+/**
+ * Set the prim type for subsequent vertices.
+ * This may result in a new vertex size. The existing vbuffer (if any)
+ * will be flushed if needed and a new one allocated.
+ */
+static void
+vbuf_set_prim( struct vbuf_stage *vbuf, uint newprim )
+{
+ const struct vertex_info *vinfo;
+ unsigned vertex_size;
+
+ assert(newprim == PIPE_PRIM_POINTS ||
+ newprim == PIPE_PRIM_LINES ||
+ newprim == PIPE_PRIM_TRIANGLES);
+
+ vbuf->prim = newprim;
+ vbuf->render->set_primitive(vbuf->render, newprim);
+
+ vinfo = vbuf->render->get_vertex_info(vbuf->render);
+ vertex_size = vinfo->size * sizeof(float);
+
+ if (vertex_size != vbuf->vertex_size)
+ vbuf_flush_vertices(vbuf);
+
+ vbuf->vinfo = vinfo;
+ vbuf->vertex_size = vertex_size;
+ if(vbuf->vf)
+ draw_vf_set_vertex_info(vbuf->vf,
+ vbuf->vinfo,
+ vbuf->stage.draw->rasterizer->point_size);
+
+ if (!vbuf->vertices)
+ vbuf_alloc_vertices(vbuf);
+}
+
+
+static void
+vbuf_first_tri( struct draw_stage *stage,
+ struct prim_header *prim )
+{
+ struct vbuf_stage *vbuf = vbuf_stage( stage );
+
+ vbuf_flush_indices( vbuf );
+ stage->tri = vbuf_tri;
+ vbuf_set_prim(vbuf, PIPE_PRIM_TRIANGLES);
+ stage->tri( stage, prim );
+}
+
+
+static void
+vbuf_first_line( struct draw_stage *stage,
+ struct prim_header *prim )
+{
+ struct vbuf_stage *vbuf = vbuf_stage( stage );
+
+ vbuf_flush_indices( vbuf );
+ stage->line = vbuf_line;
+ vbuf_set_prim(vbuf, PIPE_PRIM_LINES);
+ stage->line( stage, prim );
+}
+
+
+static void
+vbuf_first_point( struct draw_stage *stage,
+ struct prim_header *prim )
+{
+ struct vbuf_stage *vbuf = vbuf_stage( stage );
+
+ vbuf_flush_indices( vbuf );
+ stage->point = vbuf_point;
+ vbuf_set_prim(vbuf, PIPE_PRIM_POINTS);
+ stage->point( stage, prim );
+}
+
+
+static void
+vbuf_flush_indices( struct vbuf_stage *vbuf )
+{
+ if(!vbuf->nr_indices)
+ return;
+
+ assert((uint) (vbuf->vertex_ptr - vbuf->vertices) ==
+ vbuf->nr_vertices * vbuf->vertex_size / sizeof(unsigned));
+
+ switch(vbuf->prim) {
+ case PIPE_PRIM_POINTS:
+ break;
+ case PIPE_PRIM_LINES:
+ assert(vbuf->nr_indices % 2 == 0);
+ break;
+ case PIPE_PRIM_TRIANGLES:
+ assert(vbuf->nr_indices % 3 == 0);
+ break;
+ default:
+ assert(0);
+ }
+
+ vbuf->render->draw(vbuf->render, vbuf->indices, vbuf->nr_indices);
+
+ vbuf->nr_indices = 0;
+
+ /* don't need to reset point/line/tri functions */
+#if 0
+ stage->point = vbuf_first_point;
+ stage->line = vbuf_first_line;
+ stage->tri = vbuf_first_tri;
+#endif
+}
+
+
+/**
+ * Flush existing vertex buffer and allocate a new one.
+ *
+ * XXX: We separate flush-on-index-full and flush-on-vb-full, but may
+ * raise issues uploading vertices if the hardware wants to flush when
+ * we flush.
+ */
+static void
+vbuf_flush_vertices( struct vbuf_stage *vbuf )
+{
+ if(vbuf->vertices) {
+ vbuf_flush_indices(vbuf);
+
+ /* Reset temporary vertices ids */
+ if(vbuf->nr_vertices)
+ draw_reset_vertex_ids( vbuf->stage.draw );
+
+ /* Free the vertex buffer */
+ vbuf->render->release_vertices(vbuf->render,
+ vbuf->vertices,
+ vbuf->vertex_size,
+ vbuf->nr_vertices);
+ vbuf->max_vertices = vbuf->nr_vertices = 0;
+ vbuf->vertex_ptr = vbuf->vertices = NULL;
+
+ }
+}
+
+
+static void
+vbuf_alloc_vertices( struct vbuf_stage *vbuf )
+{
+ assert(!vbuf->nr_indices);
+ assert(!vbuf->vertices);
+
+ /* Allocate a new vertex buffer */
+ vbuf->max_vertices = vbuf->render->max_vertex_buffer_bytes / vbuf->vertex_size;
+ vbuf->vertices = (uint *) vbuf->render->allocate_vertices(vbuf->render,
+ (ushort) vbuf->vertex_size,
+ (ushort) vbuf->max_vertices);
+ vbuf->vertex_ptr = vbuf->vertices;
+}
+
+
+
+static void
+vbuf_flush( struct draw_stage *stage, unsigned flags )
+{
+ struct vbuf_stage *vbuf = vbuf_stage( stage );
+
+ vbuf_flush_indices( vbuf );
+
+ stage->point = vbuf_first_point;
+ stage->line = vbuf_first_line;
+ stage->tri = vbuf_first_tri;
+
+ if (flags & DRAW_FLUSH_BACKEND)
+ vbuf_flush_vertices( vbuf );
+}
+
+
+static void
+vbuf_reset_stipple_counter( struct draw_stage *stage )
+{
+ /* XXX: Need to do something here for hardware with linestipple.
+ */
+ (void) stage;
+}
+
+
+static void vbuf_destroy( struct draw_stage *stage )
+{
+ struct vbuf_stage *vbuf = vbuf_stage( stage );
+
+ if(vbuf->indices)
+ align_free( vbuf->indices );
+
+ if(vbuf->vf)
+ draw_vf_destroy( vbuf->vf );
+
+ if (vbuf->render)
+ vbuf->render->destroy( vbuf->render );
+
+ FREE( stage );
+}
+
+
+/**
+ * Create a new primitive vbuf/render stage.
+ */
+struct draw_stage *draw_vbuf_stage( struct draw_context *draw,
+ struct vbuf_render *render )
+{
+ struct vbuf_stage *vbuf = CALLOC_STRUCT(vbuf_stage);
+
+ if(!vbuf)
+ return NULL;
+
+ vbuf->stage.draw = draw;
+ vbuf->stage.point = vbuf_first_point;
+ vbuf->stage.line = vbuf_first_line;
+ vbuf->stage.tri = vbuf_first_tri;
+ vbuf->stage.flush = vbuf_flush;
+ vbuf->stage.reset_stipple_counter = vbuf_reset_stipple_counter;
+ vbuf->stage.destroy = vbuf_destroy;
+
+ vbuf->render = render;
+
+ assert(render->max_indices < UNDEFINED_VERTEX_ID);
+ vbuf->max_indices = render->max_indices;
+ vbuf->indices = (ushort *)
+ align_malloc( vbuf->max_indices * sizeof(vbuf->indices[0]), 16 );
+ if(!vbuf->indices)
+ vbuf_destroy(&vbuf->stage);
+
+ vbuf->vertices = NULL;
+ vbuf->vertex_ptr = vbuf->vertices;
+
+ vbuf->prim = ~0;
+
+ if(!GETENV("GALLIUM_NOVF"))
+ vbuf->vf = draw_vf_create();
+
+ return &vbuf->stage;
+}
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