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-rw-r--r--src/gallium/auxiliary/draw/draw_vs_varient.c322
1 files changed, 322 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_vs_varient.c b/src/gallium/auxiliary/draw/draw_vs_varient.c
new file mode 100644
index 0000000000..7ee567d478
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+++ b/src/gallium/auxiliary/draw/draw_vs_varient.c
@@ -0,0 +1,322 @@
+/**************************************************************************
+ *
+ * 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 "util/u_memory.h"
+#include "util/u_math.h"
+#include "draw/draw_context.h"
+#include "draw/draw_private.h"
+#include "draw/draw_vbuf.h"
+#include "draw/draw_vertex.h"
+#include "draw/draw_vs.h"
+#include "translate/translate.h"
+#include "translate/translate_cache.h"
+
+/* A first pass at incorporating vertex fetch/emit functionality into
+ */
+struct draw_vs_varient_generic {
+ struct draw_vs_varient base;
+
+ struct draw_vertex_shader *shader;
+ struct draw_context *draw;
+
+ /* Basic plan is to run these two translate functions before/after
+ * the vertex shader's existing run_linear() routine to simulate
+ * the inclusion of this functionality into the shader...
+ *
+ * Next will look at actually including it.
+ */
+ struct translate *fetch;
+ struct translate *emit;
+
+ unsigned temp_vertex_stride;
+};
+
+
+
+
+
+static void vsvg_set_buffer( struct draw_vs_varient *varient,
+ unsigned buffer,
+ const void *ptr,
+ unsigned stride )
+{
+ struct draw_vs_varient_generic *vsvg = (struct draw_vs_varient_generic *)varient;
+
+ vsvg->fetch->set_buffer(vsvg->fetch,
+ buffer,
+ ptr,
+ stride);
+}
+
+
+/* Mainly for debug at this stage:
+ */
+static void do_rhw_viewport( struct draw_vs_varient_generic *vsvg,
+ unsigned count,
+ void *output_buffer )
+{
+ char *ptr = (char *)output_buffer;
+ const float *scale = vsvg->base.vs->draw->viewport.scale;
+ const float *trans = vsvg->base.vs->draw->viewport.translate;
+ unsigned stride = vsvg->temp_vertex_stride;
+ unsigned j;
+
+ ptr += vsvg->base.vs->position_output * 4 * sizeof(float);
+
+ for (j = 0; j < count; j++, ptr += stride) {
+ float *data = (float *)ptr;
+ float w = 1.0f / data[3];
+
+ data[0] = data[0] * w * scale[0] + trans[0];
+ data[1] = data[1] * w * scale[1] + trans[1];
+ data[2] = data[2] * w * scale[2] + trans[2];
+ data[3] = w;
+ }
+}
+
+static void do_viewport( struct draw_vs_varient_generic *vsvg,
+ unsigned count,
+ void *output_buffer )
+{
+ char *ptr = (char *)output_buffer;
+ const float *scale = vsvg->base.vs->draw->viewport.scale;
+ const float *trans = vsvg->base.vs->draw->viewport.translate;
+ unsigned stride = vsvg->temp_vertex_stride;
+ unsigned j;
+
+ ptr += vsvg->base.vs->position_output * 4 * sizeof(float);
+
+ for (j = 0; j < count; j++, ptr += stride) {
+ float *data = (float *)ptr;
+
+ data[0] = data[0] * scale[0] + trans[0];
+ data[1] = data[1] * scale[1] + trans[1];
+ data[2] = data[2] * scale[2] + trans[2];
+ }
+}
+
+
+static void PIPE_CDECL vsvg_run_elts( struct draw_vs_varient *varient,
+ const unsigned *elts,
+ unsigned count,
+ void *output_buffer)
+{
+ struct draw_vs_varient_generic *vsvg = (struct draw_vs_varient_generic *)varient;
+ unsigned temp_vertex_stride = vsvg->temp_vertex_stride;
+ void *temp_buffer = MALLOC( align(count,4) * temp_vertex_stride );
+
+ if (0) debug_printf("%s %d \n", __FUNCTION__, count);
+
+ /* Want to do this in small batches for cache locality?
+ */
+
+ vsvg->fetch->run_elts( vsvg->fetch,
+ elts,
+ count,
+ temp_buffer );
+
+ vsvg->base.vs->run_linear( vsvg->base.vs,
+ temp_buffer,
+ temp_buffer,
+ (const float (*)[4])vsvg->base.vs->draw->pt.user.constants,
+ count,
+ temp_vertex_stride,
+ temp_vertex_stride);
+
+
+ if (vsvg->base.key.clip) {
+ /* not really handling clipping, just do the rhw so we can
+ * see the results...
+ */
+ do_rhw_viewport( vsvg,
+ count,
+ temp_buffer );
+ }
+ else if (vsvg->base.key.viewport) {
+ do_viewport( vsvg,
+ count,
+ temp_buffer );
+ }
+
+
+ vsvg->emit->set_buffer( vsvg->emit,
+ 0,
+ temp_buffer,
+ temp_vertex_stride );
+
+ vsvg->emit->set_buffer( vsvg->emit,
+ 1,
+ &vsvg->draw->rasterizer->point_size,
+ 0);
+
+ vsvg->emit->run( vsvg->emit,
+ 0, count,
+ output_buffer );
+
+ FREE(temp_buffer);
+}
+
+
+static void PIPE_CDECL vsvg_run_linear( struct draw_vs_varient *varient,
+ unsigned start,
+ unsigned count,
+ void *output_buffer )
+{
+ struct draw_vs_varient_generic *vsvg = (struct draw_vs_varient_generic *)varient;
+ unsigned temp_vertex_stride = vsvg->temp_vertex_stride;
+ void *temp_buffer = MALLOC( align(count,4) * temp_vertex_stride );
+
+ if (0) debug_printf("%s %d %d (sz %d, %d)\n", __FUNCTION__, start, count,
+ vsvg->base.key.output_stride,
+ temp_vertex_stride);
+
+ vsvg->fetch->run( vsvg->fetch,
+ start,
+ count,
+ temp_buffer );
+
+ vsvg->base.vs->run_linear( vsvg->base.vs,
+ temp_buffer,
+ temp_buffer,
+ (const float (*)[4])vsvg->base.vs->draw->pt.user.constants,
+ count,
+ temp_vertex_stride,
+ temp_vertex_stride);
+
+ if (vsvg->base.key.clip) {
+ /* not really handling clipping, just do the rhw so we can
+ * see the results...
+ */
+ do_rhw_viewport( vsvg,
+ count,
+ temp_buffer );
+ }
+ else if (vsvg->base.key.viewport) {
+ do_viewport( vsvg,
+ count,
+ temp_buffer );
+ }
+
+ vsvg->emit->set_buffer( vsvg->emit,
+ 0,
+ temp_buffer,
+ temp_vertex_stride );
+
+ vsvg->emit->set_buffer( vsvg->emit,
+ 1,
+ &vsvg->draw->rasterizer->point_size,
+ 0);
+
+ vsvg->emit->run( vsvg->emit,
+ 0, count,
+ output_buffer );
+
+ FREE(temp_buffer);
+}
+
+
+
+
+
+static void vsvg_destroy( struct draw_vs_varient *varient )
+{
+ FREE(varient);
+}
+
+
+struct draw_vs_varient *draw_vs_varient_generic( struct draw_vertex_shader *vs,
+ const struct draw_vs_varient_key *key )
+{
+ unsigned i;
+ struct translate_key fetch, emit;
+
+ struct draw_vs_varient_generic *vsvg = CALLOC_STRUCT( draw_vs_varient_generic );
+ if (vsvg == NULL)
+ return NULL;
+
+ vsvg->base.key = *key;
+ vsvg->base.vs = vs;
+ vsvg->base.set_buffer = vsvg_set_buffer;
+ vsvg->base.run_elts = vsvg_run_elts;
+ vsvg->base.run_linear = vsvg_run_linear;
+ vsvg->base.destroy = vsvg_destroy;
+
+ vsvg->draw = vs->draw;
+
+ vsvg->temp_vertex_stride = MAX2(key->nr_inputs,
+ vsvg->base.vs->info.num_outputs) * 4 * sizeof(float);
+
+ /* Build free-standing fetch and emit functions:
+ */
+ fetch.nr_elements = key->nr_inputs;
+ fetch.output_stride = vsvg->temp_vertex_stride;
+ for (i = 0; i < key->nr_inputs; i++) {
+ fetch.element[i].input_format = key->element[i].in.format;
+ fetch.element[i].input_buffer = key->element[i].in.buffer;
+ fetch.element[i].input_offset = key->element[i].in.offset;
+ fetch.element[i].output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
+ fetch.element[i].output_offset = i * 4 * sizeof(float);
+ assert(fetch.element[i].output_offset < fetch.output_stride);
+ }
+
+
+ emit.nr_elements = key->nr_outputs;
+ emit.output_stride = key->output_stride;
+ for (i = 0; i < key->nr_outputs; i++) {
+ if (key->element[i].out.format != EMIT_1F_PSIZE)
+ {
+ emit.element[i].input_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
+ emit.element[i].input_buffer = 0;
+ emit.element[i].input_offset = key->element[i].out.vs_output * 4 * sizeof(float);
+ emit.element[i].output_format = draw_translate_vinfo_format(key->element[i].out.format);
+ emit.element[i].output_offset = key->element[i].out.offset;
+ assert(emit.element[i].input_offset <= fetch.output_stride);
+ }
+ else {
+ emit.element[i].input_format = PIPE_FORMAT_R32_FLOAT;
+ emit.element[i].input_buffer = 1;
+ emit.element[i].input_offset = 0;
+ emit.element[i].output_format = PIPE_FORMAT_R32_FLOAT;
+ emit.element[i].output_offset = key->element[i].out.offset;
+ }
+ }
+
+ vsvg->fetch = draw_vs_get_fetch( vs->draw, &fetch );
+ vsvg->emit = draw_vs_get_emit( vs->draw, &emit );
+
+ return &vsvg->base;
+}
+
+
+
+
+
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