From d088d640fca415261a208d3cbede94a6522ebb6b Mon Sep 17 00:00:00 2001 From: Brian Date: Thu, 13 Mar 2008 17:10:28 -0600 Subject: gallium: plug in vertex passthrough code Based on a patch from Zack. Basically, implement a new draw_arrays function that copies the incoming user-vertices to the hardware vertex buffer, doing format/type conversion as needed. The vertex fetch/store code is totally temporary for now. --- src/gallium/auxiliary/draw/Makefile | 1 + src/gallium/auxiliary/draw/SConscript | 1 + src/gallium/auxiliary/draw/draw_passthrough.c | 106 ++++++++++++++++++++++++-- src/gallium/auxiliary/draw/draw_prim.c | 47 +++++++++++- 4 files changed, 147 insertions(+), 8 deletions(-) (limited to 'src') diff --git a/src/gallium/auxiliary/draw/Makefile b/src/gallium/auxiliary/draw/Makefile index 2daa1636f3..21e9f737b7 100644 --- a/src/gallium/auxiliary/draw/Makefile +++ b/src/gallium/auxiliary/draw/Makefile @@ -15,6 +15,7 @@ C_SOURCES = \ draw_debug.c \ draw_flatshade.c \ draw_offset.c \ + draw_passthrough.c \ draw_prim.c \ draw_pstipple.c \ draw_stipple.c \ diff --git a/src/gallium/auxiliary/draw/SConscript b/src/gallium/auxiliary/draw/SConscript index 5cb7664c85..64b444dbd5 100644 --- a/src/gallium/auxiliary/draw/SConscript +++ b/src/gallium/auxiliary/draw/SConscript @@ -15,6 +15,7 @@ draw = env.ConvenienceLibrary( 'draw_flatshade.c', 'draw_offset.c', 'draw_prim.c', + 'draw_passthrough.c', 'draw_pstipple.c', 'draw_passthrough.c', 'draw_stipple.c', diff --git a/src/gallium/auxiliary/draw/draw_passthrough.c b/src/gallium/auxiliary/draw/draw_passthrough.c index a51fa0ab23..d16f056191 100644 --- a/src/gallium/auxiliary/draw/draw_passthrough.c +++ b/src/gallium/auxiliary/draw/draw_passthrough.c @@ -66,6 +66,95 @@ #include "draw/draw_vertex.h" +/** + * General-purpose fetch from user's vertex arrays, emit to driver's + * vertex buffer. + * + * XXX this is totally temporary. + */ +static void +fetch_store_general( struct draw_context *draw, + float *out, + unsigned start, + unsigned count ) +{ + const struct vertex_info *vinfo = draw->render->get_vertex_info(draw->render); + const unsigned nr_attrs = vinfo->num_attribs; + uint i, j; + + const unsigned *pitch = draw->vertex_fetch.pitch; + const ubyte **src = draw->vertex_fetch.src_ptr; + + for (i = start; i < count; i++) { + for (j = 0; j < nr_attrs; j++) { + const uint jj = vinfo->src_index[j]; + const enum pipe_format srcFormat = draw->vertex_element[jj].src_format; + const ubyte *from = src[jj] + i * pitch[jj]; + float attrib[4]; + + switch (srcFormat) { + case PIPE_FORMAT_R32G32B32A32_FLOAT: + { + float *f = (float *) from; + attrib[0] = f[0]; + attrib[1] = f[1]; + attrib[2] = f[2]; + attrib[3] = f[3]; + } + break; + case PIPE_FORMAT_R32G32B32_FLOAT: + { + float *f = (float *) from; + attrib[0] = f[0]; + attrib[1] = f[1]; + attrib[2] = f[2]; + attrib[3] = 1.0; + } + break; + case PIPE_FORMAT_R32G32_FLOAT: + { + float *f = (float *) from; + attrib[0] = f[0]; + attrib[1] = f[1]; + attrib[2] = 0.0; + attrib[3] = 1.0; + } + break; + case PIPE_FORMAT_R32_FLOAT: + { + float *f = (float *) from; + attrib[0] = f[0]; + attrib[1] = 0.0; + attrib[2] = 0.0; + attrib[3] = 1.0; + } + break; + default: + abort(); + } + + /* XXX this will probably only work for softpipe */ + switch (vinfo->emit[j]) { + case EMIT_HEADER: + memset(out, 0, sizeof(struct vertex_header)); + out += sizeof(struct vertex_header) / 4; + break; + case EMIT_4F: + out[0] = attrib[0]; + out[1] = attrib[1]; + out[2] = attrib[2]; + out[3] = attrib[3]; + out += 4; + break; + default: + abort(); + } + + } + } +} + + /* Example of a fetch/emit passthrough shader which could be * generated when bypass_clipping is enabled on a passthrough vertex @@ -116,7 +205,6 @@ static void fetch_xyz_rgb_st( struct draw_context *draw, } } - static boolean update_shader( struct draw_context *draw ) { const struct vertex_info *vinfo = draw->render->get_vertex_info(draw->render); @@ -143,11 +231,15 @@ static boolean update_shader( struct draw_context *draw ) /* Just trying to figure out how this would work: */ - if (nr_attrs == 3 && - 0 /* some other tests */) + if (draw->rasterizer->bypass_vs || + (nr_attrs == 3 && 0 /* some other tests */)) { +#if 0 draw->vertex_fetch.pt_fetch = fetch_xyz_rgb_st; - assert(vinfo->size == 10); +#else + draw->vertex_fetch.pt_fetch = fetch_store_general; +#endif + /*assert(vinfo->size == 10);*/ return TRUE; } @@ -175,7 +267,6 @@ static boolean set_prim( struct draw_context *draw, } - boolean draw_passthrough_arrays(struct draw_context *draw, unsigned prim, @@ -184,10 +275,13 @@ draw_passthrough_arrays(struct draw_context *draw, { float *hw_verts; + if (draw_need_pipeline(draw)) + return FALSE; + if (!set_prim(draw, prim)) return FALSE; - if (!update_shader( draw )) + if (!update_shader(draw)) return FALSE; hw_verts = draw->render->allocate_vertices( draw->render, diff --git a/src/gallium/auxiliary/draw/draw_prim.c b/src/gallium/auxiliary/draw/draw_prim.c index 7d6cd43410..ff71ba9b73 100644 --- a/src/gallium/auxiliary/draw/draw_prim.c +++ b/src/gallium/auxiliary/draw/draw_prim.c @@ -31,6 +31,7 @@ */ #include "pipe/p_debug.h" +#include "pipe/p_util.h" #include "draw_private.h" #include "draw_context.h" @@ -118,7 +119,42 @@ static void draw_prim_queue_flush( struct draw_context *draw ) draw_vertex_cache_unreference( draw ); } +static INLINE void fetch_and_store(struct draw_context *draw) +{ + unsigned i; + + /* run vertex shader on vertex cache entries, four per invokation */ +#if 0 + { + const struct vertex_info *vinfo = draw->render->get_vertex_info(draw->render); + memcpy(draw->vs.queue[0].vertex, draw->vs.queue[i + j].elt, + count * vinfo->size); + } +#elif 0 + draw_update_vertex_fetch(draw); + for (i = 0; i < draw->vs.queue_nr; i += 4) { + struct vertex_header *dests[4]; + unsigned elts[4]; + struct tgsi_exec_machine *machine = &draw->machine; + int j, n = MIN2(4, draw->vs.queue_nr - i); + + for (j = 0; j < n; j++) { + elts[j] = draw->vs.queue[i + j].elt; + dests[j] = draw->vs.queue[i + j].vertex; + } + for ( ; j < 4; j++) { + elts[j] = elts[0]; + dests[j] = draw->vs.queue[i + j].vertex; + } + //fetch directly into dests + draw->vertex_fetch.fetch_func(draw, machine, dests, count); + } +#endif + + draw->vs.post_nr = draw->vs.queue_nr; + draw->vs.queue_nr = 0; +} void draw_do_flush( struct draw_context *draw, unsigned flags ) { @@ -134,7 +170,10 @@ void draw_do_flush( struct draw_context *draw, unsigned flags ) if (flags >= DRAW_FLUSH_SHADER_QUEUE) { if (draw->vs.queue_nr) - (*draw->shader_queue_flush)(draw); + if (draw->rasterizer->bypass_vs) + fetch_and_store(draw); + else + (*draw->shader_queue_flush)(draw); if (flags >= DRAW_FLUSH_PRIM_QUEUE) { if (draw->pq.queue_nr) @@ -485,7 +524,11 @@ draw_arrays(struct draw_context *draw, unsigned prim, } /* drawing done here: */ - draw_prim(draw, prim, start, count); + if (!draw->rasterizer->bypass_vs || + !draw_passthrough_arrays(draw, prim, start, count)) { + /* we have to run the whole pipeline */ + draw_prim(draw, prim, start, count); + } } -- cgit v1.2.3