diff options
Diffstat (limited to 'src/gallium/drivers/i915simple/i915_prim_vbuf.c')
-rw-r--r-- | src/gallium/drivers/i915simple/i915_prim_vbuf.c | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/src/gallium/drivers/i915simple/i915_prim_vbuf.c b/src/gallium/drivers/i915simple/i915_prim_vbuf.c new file mode 100644 index 0000000..e069773 --- /dev/null +++ b/src/gallium/drivers/i915simple/i915_prim_vbuf.c @@ -0,0 +1,254 @@ +/************************************************************************** + * + * 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. + * + **************************************************************************/ + +/** + * \file + * Build post-transformation, post-clipping vertex buffers and element + * lists by hooking into the end of the primitive pipeline and + * manipulating the vertex_id field in the vertex headers. + * + * XXX: work in progress + * + * \author José Fonseca <jrfonseca@tungstengraphics.com> + * \author Keith Whitwell <keith@tungstengraphics.com> + */ + + +#include "pipe/draw/draw_vbuf.h" +#include "pipe/p_debug.h" +#include "pipe/p_util.h" +#include "pipe/p_inlines.h" +#include "pipe/p_winsys.h" + +#include "i915_context.h" +#include "i915_reg.h" +#include "i915_winsys.h" +#include "i915_batch.h" +#include "i915_state.h" + + +/** + * Primitive renderer for i915. + */ +struct i915_vbuf_render { + struct vbuf_render base; + + struct i915_context *i915; + + /** Vertex size in bytes */ + unsigned vertex_size; + + /** Hardware primitive */ + unsigned hwprim; +}; + + +/** + * Basically a cast wrapper. + */ +static INLINE struct i915_vbuf_render * +i915_vbuf_render( struct vbuf_render *render ) +{ + assert(render); + return (struct i915_vbuf_render *)render; +} + + +static const struct vertex_info * +i915_vbuf_render_get_vertex_info( struct vbuf_render *render ) +{ + struct i915_vbuf_render *i915_render = i915_vbuf_render(render); + struct i915_context *i915 = i915_render->i915; + return &i915->current.vertex_info; +} + + +static void * +i915_vbuf_render_allocate_vertices( struct vbuf_render *render, + ushort vertex_size, + ushort nr_vertices ) +{ + struct i915_vbuf_render *i915_render = i915_vbuf_render(render); + struct i915_context *i915 = i915_render->i915; + struct pipe_winsys *winsys = i915->pipe.winsys; + size_t size = (size_t)vertex_size * (size_t)nr_vertices; + + /* FIXME: handle failure */ + assert(!i915->vbo); + i915->vbo = winsys->buffer_create(winsys, 64, I915_BUFFER_USAGE_LIT_VERTEX, + size); + + i915->dirty |= I915_NEW_VBO; + + return winsys->buffer_map(winsys, + i915->vbo, + PIPE_BUFFER_USAGE_CPU_WRITE); +} + + +static void +i915_vbuf_render_set_primitive( struct vbuf_render *render, + unsigned prim ) +{ + struct i915_vbuf_render *i915_render = i915_vbuf_render(render); + + switch(prim) { + case PIPE_PRIM_POINTS: + i915_render->hwprim = PRIM3D_POINTLIST; + break; + case PIPE_PRIM_LINES: + i915_render->hwprim = PRIM3D_LINELIST; + break; + case PIPE_PRIM_TRIANGLES: + i915_render->hwprim = PRIM3D_TRILIST; + break; + default: + assert(0); + } +} + + +static void +i915_vbuf_render_draw( struct vbuf_render *render, + const ushort *indices, + uint nr_indices) +{ + struct i915_vbuf_render *i915_render = i915_vbuf_render(render); + struct i915_context *i915 = i915_render->i915; + unsigned i; + + assert(nr_indices); + + assert((i915->dirty & ~I915_NEW_VBO) == 0); + + if (i915->dirty) + i915_update_derived( i915 ); + + if (i915->hardware_dirty) + i915_emit_hardware_state( i915 ); + + if (!BEGIN_BATCH( 1 + (nr_indices + 1)/2, 1 )) { + FLUSH_BATCH(); + + /* Make sure state is re-emitted after a flush: + */ + i915_update_derived( i915 ); + i915_emit_hardware_state( i915 ); + + if (!BEGIN_BATCH( 1 + (nr_indices + 1)/2, 1 )) { + assert(0); + return; + } + } + + OUT_BATCH( _3DPRIMITIVE | + PRIM_INDIRECT | + i915_render->hwprim | + PRIM_INDIRECT_ELTS | + nr_indices ); + for (i = 0; i + 1 < nr_indices; i += 2) { + OUT_BATCH( indices[i] | + (indices[i + 1] << 16) ); + } + if (i < nr_indices) { + OUT_BATCH( indices[i] ); + } +} + + +static void +i915_vbuf_render_release_vertices( struct vbuf_render *render, + void *vertices, + unsigned vertex_size, + unsigned vertices_used ) +{ + struct i915_vbuf_render *i915_render = i915_vbuf_render(render); + struct i915_context *i915 = i915_render->i915; + struct pipe_winsys *winsys = i915->pipe.winsys; + + assert(i915->vbo); + winsys->buffer_unmap(winsys, i915->vbo); + pipe_buffer_reference(winsys, &i915->vbo, NULL); +} + + +static void +i915_vbuf_render_destroy( struct vbuf_render *render ) +{ + struct i915_vbuf_render *i915_render = i915_vbuf_render(render); + FREE(i915_render); +} + + +/** + * Create a new primitive render. + */ +static struct vbuf_render * +i915_vbuf_render_create( struct i915_context *i915 ) +{ + struct i915_vbuf_render *i915_render = CALLOC_STRUCT(i915_vbuf_render); + + i915_render->i915 = i915; + + i915_render->base.max_vertex_buffer_bytes = 128*1024; + + /* NOTE: it must be such that state and vertices indices fit in a single + * batch buffer. + */ + i915_render->base.max_indices = 16*1024; + + i915_render->base.get_vertex_info = i915_vbuf_render_get_vertex_info; + i915_render->base.allocate_vertices = i915_vbuf_render_allocate_vertices; + i915_render->base.set_primitive = i915_vbuf_render_set_primitive; + i915_render->base.draw = i915_vbuf_render_draw; + i915_render->base.release_vertices = i915_vbuf_render_release_vertices; + i915_render->base.destroy = i915_vbuf_render_destroy; + + return &i915_render->base; +} + + +/** + * Create a new primitive vbuf/render stage. + */ +struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 ) +{ + struct vbuf_render *render; + struct draw_stage *stage; + + render = i915_vbuf_render_create(i915); + if(!render) + return NULL; + + stage = draw_vbuf_stage( i915->draw, render ); + if(!stage) { + render->destroy(render); + return NULL; + } + + return stage; +} |