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Diffstat (limited to 'src/gallium/drivers/llvmpipe/lp_prim_vbuf.c')
-rw-r--r--src/gallium/drivers/llvmpipe/lp_prim_vbuf.c607
1 files changed, 607 insertions, 0 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_prim_vbuf.c b/src/gallium/drivers/llvmpipe/lp_prim_vbuf.c
new file mode 100644
index 0000000000..c394dcb61d
--- /dev/null
+++ b/src/gallium/drivers/llvmpipe/lp_prim_vbuf.c
@@ -0,0 +1,607 @@
+/**************************************************************************
+ *
+ * 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.
+ *
+ **************************************************************************/
+
+/**
+ * Interface between 'draw' module's output and the llvmpipe rasterizer/setup
+ * code. When the 'draw' module has finished filling a vertex buffer, the
+ * draw_arrays() functions below will be called. Loop over the vertices and
+ * call the point/line/tri setup functions.
+ *
+ * Authors
+ * Brian Paul
+ */
+
+
+#include "lp_context.h"
+#include "lp_state.h"
+#include "lp_prim_vbuf.h"
+#include "lp_prim_setup.h"
+#include "lp_setup.h"
+#include "draw/draw_context.h"
+#include "draw/draw_vbuf.h"
+#include "util/u_memory.h"
+#include "util/u_prim.h"
+
+
+#define LP_MAX_VBUF_INDEXES 1024
+#define LP_MAX_VBUF_SIZE 4096
+
+typedef const float (*cptrf4)[4];
+
+/**
+ * Subclass of vbuf_render.
+ */
+struct llvmpipe_vbuf_render
+{
+ struct vbuf_render base;
+ struct llvmpipe_context *llvmpipe;
+ uint prim;
+ uint vertex_size;
+ uint nr_vertices;
+ uint vertex_buffer_size;
+ void *vertex_buffer;
+};
+
+
+/** cast wrapper */
+static struct llvmpipe_vbuf_render *
+llvmpipe_vbuf_render(struct vbuf_render *vbr)
+{
+ return (struct llvmpipe_vbuf_render *) vbr;
+}
+
+
+static const struct vertex_info *
+lp_vbuf_get_vertex_info(struct vbuf_render *vbr)
+{
+ struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr);
+ return llvmpipe_get_vbuf_vertex_info(cvbr->llvmpipe);
+}
+
+
+static boolean
+lp_vbuf_allocate_vertices(struct vbuf_render *vbr,
+ ushort vertex_size, ushort nr_vertices)
+{
+ struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr);
+ unsigned size = vertex_size * nr_vertices;
+
+ if (cvbr->vertex_buffer_size < size) {
+ align_free(cvbr->vertex_buffer);
+ cvbr->vertex_buffer = align_malloc(size, 16);
+ cvbr->vertex_buffer_size = size;
+ }
+
+ cvbr->vertex_size = vertex_size;
+ cvbr->nr_vertices = nr_vertices;
+
+ return cvbr->vertex_buffer != NULL;
+}
+
+static void
+lp_vbuf_release_vertices(struct vbuf_render *vbr)
+{
+#if 0
+ {
+ struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr);
+ const struct vertex_info *info =
+ llvmpipe_get_vbuf_vertex_info(cvbr->llvmpipe);
+ const float *vtx = (const float *) cvbr->vertex_buffer;
+ uint i, j;
+ debug_printf("%s (vtx_size = %u, vtx_used = %u)\n",
+ __FUNCTION__, cvbr->vertex_size, cvbr->nr_vertices);
+ for (i = 0; i < cvbr->nr_vertices; i++) {
+ for (j = 0; j < info->num_attribs; j++) {
+ uint k;
+ switch (info->attrib[j].emit) {
+ case EMIT_4F: k = 4; break;
+ case EMIT_3F: k = 3; break;
+ case EMIT_2F: k = 2; break;
+ case EMIT_1F: k = 1; break;
+ default: assert(0);
+ }
+ debug_printf("Vert %u attr %u: ", i, j);
+ while (k-- > 0) {
+ debug_printf("%g ", vtx[0]);
+ vtx++;
+ }
+ debug_printf("\n");
+ }
+ }
+ }
+#endif
+
+ /* keep the old allocation for next time */
+}
+
+static void *
+lp_vbuf_map_vertices(struct vbuf_render *vbr)
+{
+ struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr);
+ return cvbr->vertex_buffer;
+}
+
+static void
+lp_vbuf_unmap_vertices(struct vbuf_render *vbr,
+ ushort min_index,
+ ushort max_index )
+{
+ struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr);
+ assert( cvbr->vertex_buffer_size >= (max_index+1) * cvbr->vertex_size );
+ /* do nothing */
+}
+
+
+static boolean
+lp_vbuf_set_primitive(struct vbuf_render *vbr, unsigned prim)
+{
+ struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr);
+
+ /* XXX: break this dependency - make setup_context live under
+ * llvmpipe, rename the old "setup" draw stage to something else.
+ */
+ struct setup_context *setup_ctx = lp_draw_setup_context(cvbr->llvmpipe->setup);
+
+ llvmpipe_setup_prepare( setup_ctx );
+
+ cvbr->llvmpipe->reduced_prim = u_reduced_prim(prim);
+ cvbr->prim = prim;
+ return TRUE;
+
+}
+
+
+static INLINE cptrf4 get_vert( const void *vertex_buffer,
+ int index,
+ int stride )
+{
+ return (cptrf4)((char *)vertex_buffer + index * stride);
+}
+
+
+/**
+ * draw elements / indexed primitives
+ */
+static void
+lp_vbuf_draw(struct vbuf_render *vbr, const ushort *indices, uint nr)
+{
+ struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr);
+ struct llvmpipe_context *llvmpipe = cvbr->llvmpipe;
+ const unsigned stride = llvmpipe->vertex_info_vbuf.size * sizeof(float);
+ const void *vertex_buffer = cvbr->vertex_buffer;
+ unsigned i;
+
+ /* XXX: break this dependency - make setup_context live under
+ * llvmpipe, rename the old "setup" draw stage to something else.
+ */
+ struct draw_stage *setup = llvmpipe->setup;
+ struct setup_context *setup_ctx = lp_draw_setup_context(setup);
+
+ switch (cvbr->prim) {
+ case PIPE_PRIM_POINTS:
+ for (i = 0; i < nr; i++) {
+ llvmpipe_setup_point( setup_ctx,
+ get_vert(vertex_buffer, indices[i-0], stride) );
+ }
+ break;
+
+ case PIPE_PRIM_LINES:
+ for (i = 1; i < nr; i += 2) {
+ llvmpipe_setup_line( setup_ctx,
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[i-0], stride) );
+ }
+ break;
+
+ case PIPE_PRIM_LINE_STRIP:
+ for (i = 1; i < nr; i ++) {
+ llvmpipe_setup_line( setup_ctx,
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[i-0], stride) );
+ }
+ break;
+
+ case PIPE_PRIM_LINE_LOOP:
+ for (i = 1; i < nr; i ++) {
+ llvmpipe_setup_line( setup_ctx,
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[i-0], stride) );
+ }
+ if (nr) {
+ llvmpipe_setup_line( setup_ctx,
+ get_vert(vertex_buffer, indices[nr-1], stride),
+ get_vert(vertex_buffer, indices[0], stride) );
+ }
+ break;
+
+ case PIPE_PRIM_TRIANGLES:
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 2; i < nr; i += 3) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[i-0], stride),
+ get_vert(vertex_buffer, indices[i-2], stride) );
+ }
+ }
+ else {
+ for (i = 2; i < nr; i += 3) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-2], stride),
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[i-0], stride) );
+ }
+ }
+ break;
+
+ case PIPE_PRIM_TRIANGLE_STRIP:
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 2; i < nr; i += 1) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i+(i&1)-1], stride),
+ get_vert(vertex_buffer, indices[i-(i&1)], stride),
+ get_vert(vertex_buffer, indices[i-2], stride) );
+ }
+ }
+ else {
+ for (i = 2; i < nr; i += 1) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i+(i&1)-2], stride),
+ get_vert(vertex_buffer, indices[i-(i&1)-1], stride),
+ get_vert(vertex_buffer, indices[i-0], stride) );
+ }
+ }
+ break;
+
+ case PIPE_PRIM_TRIANGLE_FAN:
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 2; i < nr; i += 1) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-0], stride),
+ get_vert(vertex_buffer, indices[0], stride),
+ get_vert(vertex_buffer, indices[i-1], stride) );
+ }
+ }
+ else {
+ for (i = 2; i < nr; i += 1) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[0], stride),
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[i-0], stride) );
+ }
+ }
+ break;
+
+ case PIPE_PRIM_QUADS:
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 3; i < nr; i += 4) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-2], stride),
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[i-3], stride) );
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[i-0], stride),
+ get_vert(vertex_buffer, indices[i-3], stride) );
+ }
+ }
+ else {
+ for (i = 3; i < nr; i += 4) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-3], stride),
+ get_vert(vertex_buffer, indices[i-2], stride),
+ get_vert(vertex_buffer, indices[i-0], stride) );
+
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-2], stride),
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[i-0], stride) );
+ }
+ }
+ break;
+
+ case PIPE_PRIM_QUAD_STRIP:
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 3; i < nr; i += 2) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-0], stride),
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[i-3], stride));
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-2], stride),
+ get_vert(vertex_buffer, indices[i-0], stride),
+ get_vert(vertex_buffer, indices[i-3], stride) );
+ }
+ }
+ else {
+ for (i = 3; i < nr; i += 2) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-3], stride),
+ get_vert(vertex_buffer, indices[i-2], stride),
+ get_vert(vertex_buffer, indices[i-0], stride) );
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[i-3], stride),
+ get_vert(vertex_buffer, indices[i-0], stride) );
+ }
+ }
+ break;
+
+ case PIPE_PRIM_POLYGON:
+ /* Almost same as tri fan but the _first_ vertex specifies the flat
+ * shading color. Note that the first polygon vertex is passed as
+ * the last triangle vertex here.
+ * flatshade_first state makes no difference.
+ */
+ for (i = 2; i < nr; i += 1) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-0], stride),
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[0], stride) );
+ }
+ break;
+
+ default:
+ assert(0);
+ }
+
+ /* XXX: why are we calling this??? If we had to call something, it
+ * would be a function in lp_setup.c:
+ */
+ lp_draw_flush( setup );
+}
+
+
+/**
+ * This function is hit when the draw module is working in pass-through mode.
+ * It's up to us to convert the vertex array into point/line/tri prims.
+ */
+static void
+lp_vbuf_draw_arrays(struct vbuf_render *vbr, uint start, uint nr)
+{
+ struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr);
+ struct llvmpipe_context *llvmpipe = cvbr->llvmpipe;
+ const unsigned stride = llvmpipe->vertex_info_vbuf.size * sizeof(float);
+ const void *vertex_buffer =
+ (void *) get_vert(cvbr->vertex_buffer, start, stride);
+ unsigned i;
+
+ /* XXX: break this dependency - make setup_context live under
+ * llvmpipe, rename the old "setup" draw stage to something else.
+ */
+ struct draw_stage *setup = llvmpipe->setup;
+ struct setup_context *setup_ctx = lp_draw_setup_context(setup);
+
+ switch (cvbr->prim) {
+ case PIPE_PRIM_POINTS:
+ for (i = 0; i < nr; i++) {
+ llvmpipe_setup_point( setup_ctx,
+ get_vert(vertex_buffer, i-0, stride) );
+ }
+ break;
+
+ case PIPE_PRIM_LINES:
+ for (i = 1; i < nr; i += 2) {
+ llvmpipe_setup_line( setup_ctx,
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-0, stride) );
+ }
+ break;
+
+ case PIPE_PRIM_LINE_STRIP:
+ for (i = 1; i < nr; i ++) {
+ llvmpipe_setup_line( setup_ctx,
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-0, stride) );
+ }
+ break;
+
+ case PIPE_PRIM_LINE_LOOP:
+ for (i = 1; i < nr; i ++) {
+ llvmpipe_setup_line( setup_ctx,
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-0, stride) );
+ }
+ if (nr) {
+ llvmpipe_setup_line( setup_ctx,
+ get_vert(vertex_buffer, nr-1, stride),
+ get_vert(vertex_buffer, 0, stride) );
+ }
+ break;
+
+ case PIPE_PRIM_TRIANGLES:
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 2; i < nr; i += 3) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-0, stride),
+ get_vert(vertex_buffer, i-2, stride) );
+ }
+ }
+ else {
+ for (i = 2; i < nr; i += 3) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-2, stride),
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-0, stride) );
+ }
+ }
+ break;
+
+ case PIPE_PRIM_TRIANGLE_STRIP:
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 2; i < nr; i++) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i+(i&1)-1, stride),
+ get_vert(vertex_buffer, i-(i&1), stride),
+ get_vert(vertex_buffer, i-2, stride) );
+ }
+ }
+ else {
+ for (i = 2; i < nr; i++) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i+(i&1)-2, stride),
+ get_vert(vertex_buffer, i-(i&1)-1, stride),
+ get_vert(vertex_buffer, i-0, stride) );
+ }
+ }
+ break;
+
+ case PIPE_PRIM_TRIANGLE_FAN:
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 2; i < nr; i += 1) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-0, stride),
+ get_vert(vertex_buffer, 0, stride),
+ get_vert(vertex_buffer, i-1, stride) );
+ }
+ }
+ else {
+ for (i = 2; i < nr; i += 1) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, 0, stride),
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-0, stride) );
+ }
+ }
+ break;
+
+ case PIPE_PRIM_QUADS:
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 3; i < nr; i += 4) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-2, stride),
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-3, stride) );
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-0, stride),
+ get_vert(vertex_buffer, i-3, stride) );
+ }
+ }
+ else {
+ for (i = 3; i < nr; i += 4) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-3, stride),
+ get_vert(vertex_buffer, i-2, stride),
+ get_vert(vertex_buffer, i-0, stride) );
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-2, stride),
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-0, stride) );
+ }
+ }
+ break;
+
+ case PIPE_PRIM_QUAD_STRIP:
+ if (llvmpipe->rasterizer->flatshade_first) {
+ for (i = 3; i < nr; i += 2) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-0, stride),
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-3, stride) );
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-2, stride),
+ get_vert(vertex_buffer, i-0, stride),
+ get_vert(vertex_buffer, i-3, stride) );
+ }
+ }
+ else {
+ for (i = 3; i < nr; i += 2) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-3, stride),
+ get_vert(vertex_buffer, i-2, stride),
+ get_vert(vertex_buffer, i-0, stride) );
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-3, stride),
+ get_vert(vertex_buffer, i-0, stride) );
+ }
+ }
+ break;
+
+ case PIPE_PRIM_POLYGON:
+ /* Almost same as tri fan but the _first_ vertex specifies the flat
+ * shading color. Note that the first polygon vertex is passed as
+ * the last triangle vertex here.
+ * flatshade_first state makes no difference.
+ */
+ for (i = 2; i < nr; i += 1) {
+ llvmpipe_setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-0, stride),
+ get_vert(vertex_buffer, 0, stride) );
+ }
+ break;
+
+ default:
+ assert(0);
+ }
+}
+
+
+
+static void
+lp_vbuf_destroy(struct vbuf_render *vbr)
+{
+ struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr);
+ cvbr->llvmpipe->vbuf_render = NULL;
+ FREE(cvbr);
+}
+
+
+/**
+ * Initialize the post-transform vertex buffer information for the given
+ * context.
+ */
+void
+lp_init_vbuf(struct llvmpipe_context *lp)
+{
+ assert(lp->draw);
+
+ lp->vbuf_render = CALLOC_STRUCT(llvmpipe_vbuf_render);
+
+ lp->vbuf_render->base.max_indices = LP_MAX_VBUF_INDEXES;
+ lp->vbuf_render->base.max_vertex_buffer_bytes = LP_MAX_VBUF_SIZE;
+
+ lp->vbuf_render->base.get_vertex_info = lp_vbuf_get_vertex_info;
+ lp->vbuf_render->base.allocate_vertices = lp_vbuf_allocate_vertices;
+ lp->vbuf_render->base.map_vertices = lp_vbuf_map_vertices;
+ lp->vbuf_render->base.unmap_vertices = lp_vbuf_unmap_vertices;
+ lp->vbuf_render->base.set_primitive = lp_vbuf_set_primitive;
+ lp->vbuf_render->base.draw = lp_vbuf_draw;
+ lp->vbuf_render->base.draw_arrays = lp_vbuf_draw_arrays;
+ lp->vbuf_render->base.release_vertices = lp_vbuf_release_vertices;
+ lp->vbuf_render->base.destroy = lp_vbuf_destroy;
+
+ lp->vbuf_render->llvmpipe = lp;
+
+ lp->vbuf = draw_vbuf_stage(lp->draw, &lp->vbuf_render->base);
+
+ draw_set_rasterize_stage(lp->draw, lp->vbuf);
+
+ draw_set_render(lp->draw, &lp->vbuf_render->base);
+}
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