--- /dev/null
+/**************************************************************************
+ *
+ * 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 "pipe/p_util.h"
+#include "draw/draw_context.h"
+#include "draw/draw_private.h"
+#include "draw/draw_vbuf.h"
+#include "draw/draw_vertex.h"
+#include "draw/draw_pt.h"
+#include "draw/draw_vs.h"
+
+#include "translate/translate.h"
+
+struct fetch_shade_emit;
+
+struct fse_shader {
+ struct translate_key key;
+
+ void (*run_linear)( const struct fetch_shade_emit *fse,
+ unsigned start,
+ unsigned count,
+ char *buffer );
+};
+
+/* Prototype fetch, shade, emit-hw-verts all in one go.
+ */
+struct fetch_shade_emit {
+ struct draw_pt_front_end base;
+
+ struct draw_context *draw;
+
+ struct translate_key key;
+
+ /* Temporaries:
+ */
+ const float *constants;
+ unsigned pitch[PIPE_MAX_ATTRIBS];
+ const ubyte *src[PIPE_MAX_ATTRIBS];
+ unsigned prim;
+
+ /* Points to one of the three hardwired example shaders, below:
+ */
+ struct fse_shader *active;
+
+ /* Temporary: A list of hard-wired shaders. Of course the plan
+ * would be to generate these for a given (vertex-shader,
+ * translate-key) pair...
+ */
+ struct fse_shader shader[10];
+ int nr_shaders;
+};
+
+
+
+/* Not quite passthrough yet -- we're still running the 'shader' here,
+ * inlined into the vertex fetch function.
+ */
+static void fetch_xyz_rgb_st( const struct fetch_shade_emit *fse,
+ unsigned start,
+ unsigned count,
+ char *buffer )
+{
+ unsigned i;
+
+ const float *m = fse->constants;
+ const float m0 = m[0], m4 = m[4], m8 = m[8], m12 = m[12];
+ const float m1 = m[1], m5 = m[5], m9 = m[9], m13 = m[13];
+ const float m2 = m[2], m6 = m[6], m10 = m[10], m14 = m[14];
+ const float m3 = m[3], m7 = m[7], m11 = m[11], m15 = m[15];
+
+ const ubyte *xyz = fse->src[0] + start * fse->pitch[0];
+ const ubyte *st = fse->src[2] + start * fse->pitch[2];
+
+ float *out = (float *)buffer;
+
+
+ assert(fse->pitch[1] == 0);
+
+ /* loop over vertex attributes (vertex shader inputs)
+ */
+ for (i = 0; i < count; i++) {
+ {
+ const float *in = (const float *)xyz;
+ const float ix = in[0], iy = in[1], iz = in[2];
+
+ out[0] = m0 * ix + m4 * iy + m8 * iz + m12;
+ out[1] = m1 * ix + m5 * iy + m9 * iz + m13;
+ out[2] = m2 * ix + m6 * iy + m10 * iz + m14;
+ out[3] = m3 * ix + m7 * iy + m11 * iz + m15;
+ xyz += fse->pitch[0];
+ }
+
+ {
+ out[4] = 1.0f;
+ out[5] = 1.0f;
+ out[6] = 1.0f;
+ out[7] = 1.0f;
+ }
+
+ {
+ const float *in = (const float *)st; st += fse->pitch[2];
+ out[8] = in[0];
+ out[9] = in[1];
+ out[10] = 0.0f;
+ out[11] = 1.0f;
+ }
+
+ out += 12;
+ }
+}
+
+
+
+static void fetch_xyz_rgb( const struct fetch_shade_emit *fse,
+ unsigned start,
+ unsigned count,
+ char *buffer )
+{
+ unsigned i;
+
+ const float *m = (const float *)fse->constants;
+ const float m0 = m[0], m4 = m[4], m8 = m[8], m12 = m[12];
+ const float m1 = m[1], m5 = m[5], m9 = m[9], m13 = m[13];
+ const float m2 = m[2], m6 = m[6], m10 = m[10], m14 = m[14];
+ const float m3 = m[3], m7 = m[7], m11 = m[11], m15 = m[15];
+
+ const ubyte *xyz = fse->src[0] + start * fse->pitch[0];
+ const ubyte *rgb = fse->src[1] + start * fse->pitch[1];
+
+ float *out = (float *)buffer;
+
+// debug_printf("rgb %f %f %f\n", rgb[0], rgb[1], rgb[2]);
+
+
+ for (i = 0; i < count; i++) {
+ {
+ const float *in = (const float *)xyz;
+ const float ix = in[0], iy = in[1], iz = in[2];
+
+ out[0] = m0 * ix + m4 * iy + m8 * iz + m12;
+ out[1] = m1 * ix + m5 * iy + m9 * iz + m13;
+ out[2] = m2 * ix + m6 * iy + m10 * iz + m14;
+ out[3] = m3 * ix + m7 * iy + m11 * iz + m15;
+ xyz += fse->pitch[0];
+ }
+
+ {
+ const float *in = (const float *)rgb;
+ out[4] = in[0];
+ out[5] = in[1];
+ out[6] = in[2];
+ out[7] = 1.0f;
+ rgb += fse->pitch[1];
+ }
+
+ out += 8;
+ }
+}
+
+
+
+
+static void fetch_xyz_rgb_psiz( const struct fetch_shade_emit *fse,
+ unsigned start,
+ unsigned count,
+ char *buffer )
+{
+ unsigned i;
+
+ const float *m = (const float *)fse->constants;
+ const float m0 = m[0], m4 = m[4], m8 = m[8], m12 = m[12];
+ const float m1 = m[1], m5 = m[5], m9 = m[9], m13 = m[13];
+ const float m2 = m[2], m6 = m[6], m10 = m[10], m14 = m[14];
+ const float m3 = m[3], m7 = m[7], m11 = m[11], m15 = m[15];
+
+ const ubyte *xyz = fse->src[0] + start * fse->pitch[0];
+ const float *rgb = (const float *)(fse->src[1] + start * fse->pitch[1]);
+ const float psiz = 1.0;
+
+ float *out = (float *)buffer;
+
+
+ assert(fse->pitch[1] == 0);
+
+ for (i = 0; i < count; i++) {
+ {
+ const float *in = (const float *)xyz;
+ const float ix = in[0], iy = in[1], iz = in[2];
+
+ out[0] = m0 * ix + m4 * iy + m8 * iz + m12;
+ out[1] = m1 * ix + m5 * iy + m9 * iz + m13;
+ out[2] = m2 * ix + m6 * iy + m10 * iz + m14;
+ out[3] = m3 * ix + m7 * iy + m11 * iz + m15;
+ xyz += fse->pitch[0];
+ }
+
+ {
+ out[4] = rgb[0];
+ out[5] = rgb[1];
+ out[6] = rgb[2];
+ out[7] = 1.0f;
+ }
+
+ {
+ out[8] = psiz;
+ }
+
+ out += 9;
+ }
+}
+
+
+
+
+static boolean set_prim( struct fetch_shade_emit *fse,
+ unsigned prim,
+ unsigned count )
+{
+ struct draw_context *draw = fse->draw;
+
+ fse->prim = prim;
+
+ switch (prim) {
+ case PIPE_PRIM_LINE_LOOP:
+ if (count > 1024)
+ return FALSE;
+ draw->render->set_primitive( draw->render, PIPE_PRIM_LINE_STRIP );
+ break;
+
+ case PIPE_PRIM_TRIANGLE_FAN:
+ case PIPE_PRIM_POLYGON:
+ if (count > 1024)
+ return FALSE;
+ draw->render->set_primitive( draw->render, prim );
+ break;
+
+ case PIPE_PRIM_QUADS:
+ case PIPE_PRIM_QUAD_STRIP:
+ draw->render->set_primitive( draw->render, PIPE_PRIM_TRIANGLES );
+ break;
+
+ default:
+ draw->render->set_primitive( draw->render, prim );
+ break;
+ }
+
+ return TRUE;
+}
+
+
+
+
+
+
+static void fse_prepare( struct draw_pt_front_end *fe,
+ unsigned prim,
+ struct draw_pt_middle_end *unused,
+ unsigned opt )
+{
+ struct fetch_shade_emit *fse = (struct fetch_shade_emit *)fe;
+ struct draw_context *draw = fse->draw;
+ unsigned num_vs_inputs = draw->vertex_shader->info.num_inputs;
+ unsigned num_vs_outputs = draw->vertex_shader->info.num_outputs;
+ const struct vertex_info *vinfo;
+ unsigned i;
+ boolean need_psize = 0;
+
+
+ if (draw->pt.user.elts) {
+ assert(0);
+ return ;
+ }
+
+ if (!set_prim(fse, prim, /*count*/1022 )) {
+ assert(0);
+ return ;
+ }
+
+ /* Must do this after set_primitive() above:
+ */
+ vinfo = draw->render->get_vertex_info(draw->render);
+
+
+
+ fse->key.nr_elements = MAX2(num_vs_outputs, /* outputs - translate to hw format */
+ num_vs_inputs); /* inputs - fetch from api format */
+
+ fse->key.output_stride = vinfo->size * 4;
+ memset(fse->key.element, 0,
+ fse->key.nr_elements * sizeof(fse->key.element[0]));
+
+ for (i = 0; i < num_vs_inputs; i++) {
+ const struct pipe_vertex_element *src = &draw->pt.vertex_element[i];
+ fse->key.element[i].input_format = src->src_format;
+
+ /* Consider ignoring these at this point, ie make generated
+ * programs independent of this state:
+ */
+ fse->key.element[i].input_buffer = 0; //src->vertex_buffer_index;
+ fse->key.element[i].input_offset = 0; //src->src_offset;
+ }
+
+
+ {
+ unsigned dst_offset = 0;
+
+ for (i = 0; i < vinfo->num_attribs; i++) {
+ unsigned emit_sz = 0;
+ unsigned output_format = PIPE_FORMAT_NONE;
+ unsigned vs_output = vinfo->src_index[i];
+
+ switch (vinfo->emit[i]) {
+ case EMIT_4F:
+ output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
+ emit_sz = 4 * sizeof(float);
+ break;
+ case EMIT_3F:
+ output_format = PIPE_FORMAT_R32G32B32_FLOAT;
+ emit_sz = 3 * sizeof(float);
+ break;
+ case EMIT_2F:
+ output_format = PIPE_FORMAT_R32G32_FLOAT;
+ emit_sz = 2 * sizeof(float);
+ break;
+ case EMIT_1F:
+ output_format = PIPE_FORMAT_R32_FLOAT;
+ emit_sz = 1 * sizeof(float);
+ break;
+ case EMIT_1F_PSIZE:
+ need_psize = 1;
+ output_format = PIPE_FORMAT_R32_FLOAT;
+ emit_sz = 1 * sizeof(float);
+ vs_output = num_vs_outputs + 1;
+
+ break;
+ default:
+ assert(0);
+ break;
+ }
+
+ /* The elements in the key correspond to vertex shader output
+ * numbers, not to positions in the hw vertex description --
+ * that's handled by the output_offset field.
+ */
+ fse->key.element[vs_output].output_format = output_format;
+ fse->key.element[vs_output].output_offset = dst_offset;
+
+ dst_offset += emit_sz;
+ assert(fse->key.output_stride >= dst_offset);
+ }
+ }
+
+ /* To make psize work, really need to tell the vertex shader to
+ * copy that value from input->output. For 'translate' this was
+ * implicit for all elements.
+ */
+#if 0
+ if (need_psize) {
+ unsigned input = num_vs_inputs + 1;
+ const struct pipe_vertex_element *src = &draw->pt.vertex_element[i];
+ fse->key.element[i].input_format = PIPE_FORMAT_R32_FLOAT;
+ fse->key.element[i].input_buffer = 0; //nr_buffers + 1;
+ fse->key.element[i].input_offset = 0;
+
+ fse->key.nr_elements += 1;
+
+ }
+#endif
+
+ fse->constants = draw->pt.user.constants;
+
+ /* Would normally look up a vertex shader and peruse its list of
+ * varients somehow. We omitted that step and put all the
+ * hardcoded "shaders" into an array. We're just making the
+ * assumption that this happens to be a matching shader... ie
+ * you're running isosurf, aren't you?
+ */
+ fse->active = NULL;
+ for (i = 0; i < fse->nr_shaders; i++) {
+ if (translate_key_compare( &fse->key, &fse->shader[i].key) == 0)
+ fse->active = &fse->shader[i];
+ }
+
+ if (!fse->active) {
+ assert(0);
+ return ;
+ }
+
+ /* Now set buffer pointers:
+ */
+ for (i = 0; i < num_vs_inputs; i++) {
+ unsigned buf = draw->pt.vertex_element[i].vertex_buffer_index;
+
+ fse->src[i] = ((const ubyte *) draw->pt.user.vbuffer[buf] +
+ draw->pt.vertex_buffer[buf].buffer_offset +
+ draw->pt.vertex_element[i].src_offset);
+
+ fse->pitch[i] = draw->pt.vertex_buffer[buf].pitch;
+
+ }
+
+
+ //return TRUE;
+}
+
+
+static boolean split_prim_inplace(unsigned prim, unsigned *first, unsigned *incr)
+{
+ switch (prim) {
+ case PIPE_PRIM_POINTS:
+ *first = 1;
+ *incr = 1;
+ return TRUE;
+ case PIPE_PRIM_LINES:
+ *first = 2;
+ *incr = 2;
+ return TRUE;
+ case PIPE_PRIM_LINE_STRIP:
+ *first = 2;
+ *incr = 1;
+ return TRUE;
+ case PIPE_PRIM_TRIANGLES:
+ *first = 3;
+ *incr = 3;
+ return TRUE;
+ case PIPE_PRIM_TRIANGLE_STRIP:
+ *first = 3;
+ *incr = 1;
+ return TRUE;
+ case PIPE_PRIM_QUADS:
+ *first = 4;
+ *incr = 4;
+ return TRUE;
+ case PIPE_PRIM_QUAD_STRIP:
+ *first = 4;
+ *incr = 2;
+ return TRUE;
+ default:
+ *first = 0;
+ *incr = 1; /* set to one so that count % incr works */
+ return FALSE;
+ }
+}
+
+
+
+
+#define INDEX(i) (start + (i))
+static void fse_render_linear( struct vbuf_render *render,
+ unsigned prim,
+ unsigned start,
+ unsigned length )
+{
+ ushort *tmp = NULL;
+ unsigned i, j;
+
+ switch (prim) {
+ case PIPE_PRIM_LINE_LOOP:
+ tmp = MALLOC( sizeof(ushort) * (length + 1) );
+
+ for (i = 0; i < length; i++)
+ tmp[i] = INDEX(i);
+ tmp[length] = 0;
+
+ render->draw( render,
+ tmp,
+ length+1 );
+ break;
+
+
+ case PIPE_PRIM_QUAD_STRIP:
+ tmp = MALLOC( sizeof(ushort) * (length / 2 * 6) );
+
+ for (j = i = 0; i + 3 < length; i += 2, j += 6) {
+ tmp[j+0] = INDEX(i+0);
+ tmp[j+1] = INDEX(i+1);
+ tmp[j+2] = INDEX(i+3);
+
+ tmp[j+3] = INDEX(i+2);
+ tmp[j+4] = INDEX(i+0);
+ tmp[j+5] = INDEX(i+3);
+ }
+
+ if (j)
+ render->draw( render, tmp, j );
+ break;
+
+ case PIPE_PRIM_QUADS:
+ tmp = MALLOC( sizeof(int) * (length / 4 * 6) );
+
+ for (j = i = 0; i + 3 < length; i += 4, j += 6) {
+ tmp[j+0] = INDEX(i+0);
+ tmp[j+1] = INDEX(i+1);
+ tmp[j+2] = INDEX(i+3);
+
+ tmp[j+3] = INDEX(i+1);
+ tmp[j+4] = INDEX(i+2);
+ tmp[j+5] = INDEX(i+3);
+ }
+
+ if (j)
+ render->draw( render, tmp, j );
+ break;
+
+ default:
+ render->draw_arrays( render,
+ start,
+ length );
+ break;
+ }
+
+ if (tmp)
+ FREE(tmp);
+}
+
+
+
+static boolean do_draw( struct fetch_shade_emit *fse,
+ unsigned start, unsigned count )
+{
+ struct draw_context *draw = fse->draw;
+
+ char *hw_verts =
+ draw->render->allocate_vertices( draw->render,
+ (ushort)fse->key.output_stride,
+ (ushort)count );
+
+ if (!hw_verts)
+ return FALSE;
+
+ /* Single routine to fetch vertices, run shader and emit HW verts.
+ * Clipping and viewport transformation are done on hardware.
+ */
+ fse->active->run_linear( fse,
+ start, count,
+ hw_verts );
+
+ /* Draw arrays path to avoid re-emitting index list again and
+ * again.
+ */
+ fse_render_linear( draw->render,
+ fse->prim,
+ 0,
+ count );
+
+
+ draw->render->release_vertices( draw->render,
+ hw_verts,
+ fse->key.output_stride,
+ count );
+
+ return TRUE;
+}
+
+
+static void
+fse_run(struct draw_pt_front_end *fe,
+ pt_elt_func elt_func,
+ const void *elt_ptr,
+ unsigned count)
+{
+ struct fetch_shade_emit *fse = (struct fetch_shade_emit *)fe;
+ unsigned i = 0;
+ unsigned first, incr;
+ unsigned start = elt_func(elt_ptr, 0);
+
+ //debug_printf("%s prim %d start %d count %d\n", __FUNCTION__, prim, start, count);
+
+ split_prim_inplace(fse->prim, &first, &incr);
+
+ count -= (count - first) % incr;
+
+ while (i + first <= count) {
+ int nr = MIN2( count - i, 1024 );
+
+ /* snap to prim boundary
+ */
+ nr -= (nr - first) % incr;
+
+ if (!do_draw( fse, start + i, nr )) {
+ assert(0);
+ return ;
+ }
+
+ /* increment allowing for repeated vertices
+ */
+ i += nr - (first - incr);
+ }
+
+ //return TRUE;
+}
+
+
+static void fse_finish( struct draw_pt_front_end *frontend )
+{
+}
+
+
+static void
+fse_destroy( struct draw_pt_front_end *frontend )
+{
+ FREE(frontend);
+}
+
+struct draw_pt_front_end *draw_pt_fetch_shade_emit( struct draw_context *draw )
+{
+ struct fetch_shade_emit *fse = CALLOC_STRUCT(fetch_shade_emit);
+ if (!fse)
+ return NULL;
+
+ fse->base.prepare = fse_prepare;
+ fse->base.run = fse_run;
+ fse->base.finish = fse_finish;
+ fse->base.destroy = fse_destroy;
+ fse->draw = draw;
+
+ fse->shader[0].run_linear = fetch_xyz_rgb_st;
+ fse->shader[0].key.nr_elements = 3;
+ fse->shader[0].key.output_stride = 12 * sizeof(float);
+
+ fse->shader[0].key.element[0].input_format = PIPE_FORMAT_R32G32B32_FLOAT;
+ fse->shader[0].key.element[0].input_buffer = 0;
+ fse->shader[0].key.element[0].input_offset = 0;
+ fse->shader[0].key.element[0].output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
+ fse->shader[0].key.element[0].output_offset = 0;
+
+ fse->shader[0].key.element[1].input_format = PIPE_FORMAT_R32G32B32_FLOAT;
+ fse->shader[0].key.element[1].input_buffer = 0;
+ fse->shader[0].key.element[1].input_offset = 0;
+ fse->shader[0].key.element[1].output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
+ fse->shader[0].key.element[1].output_offset = 16;
+
+ fse->shader[0].key.element[1].input_format = PIPE_FORMAT_R32G32_FLOAT;
+ fse->shader[0].key.element[1].input_buffer = 0;
+ fse->shader[0].key.element[1].input_offset = 0;
+ fse->shader[0].key.element[1].output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
+ fse->shader[0].key.element[1].output_offset = 32;
+
+ fse->shader[1].run_linear = fetch_xyz_rgb;
+ fse->shader[1].key.nr_elements = 2;
+ fse->shader[1].key.output_stride = 8 * sizeof(float);
+
+ fse->shader[1].key.element[0].input_format = PIPE_FORMAT_R32G32B32_FLOAT;
+ fse->shader[1].key.element[0].input_buffer = 0;
+ fse->shader[1].key.element[0].input_offset = 0;
+ fse->shader[1].key.element[0].output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
+ fse->shader[1].key.element[0].output_offset = 0;
+
+ fse->shader[1].key.element[1].input_format = PIPE_FORMAT_R32G32B32_FLOAT;
+ fse->shader[1].key.element[1].input_buffer = 0;
+ fse->shader[1].key.element[1].input_offset = 0;
+ fse->shader[1].key.element[1].output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
+ fse->shader[1].key.element[1].output_offset = 16;
+
+ fse->shader[2].run_linear = fetch_xyz_rgb_psiz;
+ fse->shader[2].key.nr_elements = 3;
+ fse->shader[2].key.output_stride = 9 * sizeof(float);
+
+ fse->shader[2].key.element[0].input_format = PIPE_FORMAT_R32G32B32_FLOAT;
+ fse->shader[2].key.element[0].input_buffer = 0;
+ fse->shader[2].key.element[0].input_offset = 0;
+ fse->shader[2].key.element[0].output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
+ fse->shader[2].key.element[0].output_offset = 0;
+
+ fse->shader[2].key.element[1].input_format = PIPE_FORMAT_R32G32B32_FLOAT;
+ fse->shader[2].key.element[1].input_buffer = 0;
+ fse->shader[2].key.element[1].input_offset = 0;
+ fse->shader[2].key.element[1].output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
+ fse->shader[2].key.element[1].output_offset = 16;
+
+ /* psize is special
+ * -- effectively add it here as another input!?!
+ * -- who knows how to add it as a buffer?
+ */
+ fse->shader[2].key.element[2].input_format = PIPE_FORMAT_R32_FLOAT;
+ fse->shader[2].key.element[2].input_buffer = 0;
+ fse->shader[2].key.element[2].input_offset = 0;
+ fse->shader[2].key.element[2].output_format = PIPE_FORMAT_R32_FLOAT;
+ fse->shader[2].key.element[2].output_offset = 32;
+
+ fse->nr_shaders = 3;
+
+ return &fse->base;
+}
projects / mesa.git / commitdiff