From 46aeff5814ae16544874ceafa5bd1e9d6577ca9d Mon Sep 17 00:00:00 2001 From: =?utf8?q?Jos=C3=A9=20Fonseca?= Date: Mon, 29 Oct 2007 11:49:59 +0000 Subject: [PATCH] Get vertex buffer stage in a minimally working state. --- src/mesa/pipe/i915simple/i915_prim_vbuf.c | 160 +++++++++++++++++++++++++----- 1 file changed, 133 insertions(+), 27 deletions(-) diff --git a/src/mesa/pipe/i915simple/i915_prim_vbuf.c b/src/mesa/pipe/i915simple/i915_prim_vbuf.c index a80af00..33e532a 100644 --- a/src/mesa/pipe/i915simple/i915_prim_vbuf.c +++ b/src/mesa/pipe/i915simple/i915_prim_vbuf.c @@ -48,6 +48,10 @@ #include "softpipe/sp_prim_setup.h" #include "i915_context.h" +#include "i915_reg.h" +#include "i915_winsys.h" +#include "i915_batch.h" +#include "i915_state.h" static void vbuf_flush_elements( struct draw_stage *stage ); @@ -63,14 +67,14 @@ static void vbuf_flush_elements( struct draw_stage *stage ); struct vbuf_stage { struct draw_stage stage; /**< This must be first (base class) */ - vbuf_draw_func draw; - + /* FIXME: we have no guarantee that 'unsigned' is 32bit */ + /* Vertices are passed in as an array of floats making up each * attribute in turn. Will eventually convert to hardware format * in this stage. */ - char *vertex_map; - char *vertex_ptr; + unsigned *vertex_map; + unsigned *vertex_ptr; unsigned vertex_size; unsigned nr_vertices; @@ -94,7 +98,8 @@ static INLINE struct vbuf_stage *vbuf_stage( struct draw_stage *stage ) } -static boolean overflow( void *map, void *ptr, unsigned bytes, unsigned bufsz ) +static inline +boolean overflow( void *map, void *ptr, unsigned bytes, unsigned bufsz ) { unsigned long used = (char *)ptr - (char *)map; return (used + bytes) > bufsz; @@ -109,7 +114,6 @@ static boolean check_space( struct vbuf_stage *vbuf ) VBUF_SIZE )) return FALSE; - if (vbuf->nr_elements + 4 > IBUF_SIZE / sizeof(ushort) ) return FALSE; @@ -117,18 +121,66 @@ static boolean check_space( struct vbuf_stage *vbuf ) } -static void emit_vertex( struct vbuf_stage *vbuf, - struct vertex_header *vertex ) +/** + * Extract the needed fields from vertex_header and emit i915 dwords. + * 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. + */ +static inline void +emit_vertex( struct vbuf_stage *vbuf, + struct vertex_header *vertex ) { + struct i915_context *i915 = vbuf->i915; + const struct vertex_info *vinfo = &i915->current.vertex_info; + uint i; + uint count = 0; /* for debug/sanity */ + // fprintf(stderr, "emit vertex %d to %p\n", // vbuf->nr_vertices, vbuf->vertex_ptr); - vertex->vertex_id = vbuf->nr_vertices++; - - //vbuf->emit_vertex( vbuf->vertex_ptr, vertex ); - memcpy(vbuf->vertex_ptr, vertex, vbuf->vertex_size); - - vbuf->vertex_ptr += vbuf->vertex_size; + /* TODO: reuse vertices */ + /* vertex->vertex_id = */ vbuf->nr_vertices++; + + for (i = 0; i < vinfo->num_attribs; i++) { + switch (vinfo->format[i]) { + case FORMAT_OMIT: + /* no-op */ + break; + case FORMAT_1F: + *vbuf->vertex_ptr++ = fui(vertex->data[i][0]); + count++; + break; + case FORMAT_2F: + *vbuf->vertex_ptr++ = fui(vertex->data[i][0]); + *vbuf->vertex_ptr++ = fui(vertex->data[i][1]); + count += 2; + break; + case FORMAT_3F: + *vbuf->vertex_ptr++ = fui(vertex->data[i][0]); + *vbuf->vertex_ptr++ = fui(vertex->data[i][1]); + *vbuf->vertex_ptr++ = fui(vertex->data[i][2]); + count += 3; + break; + case FORMAT_4F: + *vbuf->vertex_ptr++ = fui(vertex->data[i][0]); + *vbuf->vertex_ptr++ = fui(vertex->data[i][1]); + *vbuf->vertex_ptr++ = fui(vertex->data[i][2]); + *vbuf->vertex_ptr++ = fui(vertex->data[i][3]); + count += 4; + break; + case FORMAT_4UB: + *vbuf->vertex_ptr++ = pack_ub4(float_to_ubyte( vertex->data[i][2] ), + float_to_ubyte( vertex->data[i][1] ), + float_to_ubyte( vertex->data[i][0] ), + float_to_ubyte( vertex->data[i][3] )); + count += 1; + break; + default: + assert(0); + } + } + assert(count == vinfo->size); } @@ -219,14 +271,66 @@ static void vbuf_first_point( struct draw_stage *stage, } -static void vbuf_draw( struct pipe_context *pipe, +static void vbuf_draw( struct draw_stage *stage, unsigned prim, const ushort *elements, unsigned nr_elements, const void *vertex_buffer, - unsigned nr_vertices ) + unsigned nr ) { - /* FIXME: */ + struct vbuf_stage *vbuf = vbuf_stage( stage ); + struct i915_context *i915 = vbuf->i915; + unsigned vertex_size = i915->current.vertex_info.size * 4; /* in bytes */ + unsigned hwprim; + unsigned *ptr; + unsigned i; + + switch(prim) { + case PIPE_PRIM_POINTS: + hwprim = PRIM3D_POINTLIST; + break; + case PIPE_PRIM_LINES: + hwprim = PRIM3D_LINELIST; + break; + case PIPE_PRIM_TRIANGLES: + hwprim = PRIM3D_TRILIST; + break; + default: + assert(0); + return; + } + + if (i915->dirty) + i915_update_derived( i915 ); + + if (i915->hardware_dirty) + i915_emit_hardware_state( i915 ); + + assert(vbuf->vertex_ptr - vbuf->vertex_map == nr * vertex_size / 4); + + ptr = BEGIN_BATCH( 1 + nr * vertex_size / 4, 0 ); + if (ptr == 0) { + FLUSH_BATCH(); + + /* Make sure state is re-emitted after a flush: + */ + i915_update_derived( i915 ); + i915_emit_hardware_state( i915 ); + + ptr = BEGIN_BATCH( 1 + nr * vertex_size / 4, 0 ); + if (ptr == 0) { + assert(0); + return; + } + } + + /* TODO: Fire a DMA buffer */ + OUT_BATCH(_3DPRIMITIVE | + hwprim | + ((4 + vertex_size * nr)/4 - 2)); + + for (i = 0; i < nr * vertex_size / 4; i++) + OUT_BATCH(vbuf->vertex_map[i]); } @@ -235,16 +339,19 @@ static void vbuf_flush_elements( struct draw_stage *stage ) struct vbuf_stage *vbuf = vbuf_stage( stage ); if (vbuf->nr_elements) { - fprintf(stderr, "%s (%d elts)\n", __FUNCTION__, vbuf->nr_elements); + fprintf(stderr, "%s (%d elts, %d verts)\n", + __FUNCTION__, + vbuf->nr_elements, + vbuf->nr_vertices); /* Draw now or add to list of primitives??? */ - vbuf_draw( &vbuf->i915->pipe, - vbuf->prim, - vbuf->element_map, - vbuf->nr_elements, - vbuf->vertex_map, - (vbuf->vertex_ptr - vbuf->vertex_map) / vbuf->vertex_size ); + vbuf_draw( stage, + vbuf->prim, + vbuf->element_map, + vbuf->nr_elements, + vbuf->vertex_map, + vbuf->nr_vertices ); vbuf->nr_elements = 0; @@ -270,7 +377,7 @@ static void vbuf_begin( struct draw_stage *stage ) { struct vbuf_stage *vbuf = vbuf_stage(stage); - vbuf->vertex_size = vbuf->i915->draw->vertex_info.size * sizeof(float); + vbuf->vertex_size = vbuf->i915->current.vertex_info.size * 4; } @@ -284,8 +391,6 @@ static void vbuf_end( struct draw_stage *stage ) static void reset_stipple_counter( struct draw_stage *stage ) { - /* XXX: This doesn't work. - */ } @@ -305,6 +410,7 @@ struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 ) vbuf->stage.end = vbuf_end; vbuf->stage.reset_stipple_counter = reset_stipple_counter; + /* FIXME: free this memory on takedown */ vbuf->element_map = malloc( IBUF_SIZE ); vbuf->vertex_map = malloc( VBUF_SIZE ); -- 2.7.4