diff options
Diffstat (limited to 'src/gallium/drivers/i965/brw_screen_buffers.c')
| -rw-r--r-- | src/gallium/drivers/i965/brw_screen_buffers.c | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/src/gallium/drivers/i965/brw_screen_buffers.c b/src/gallium/drivers/i965/brw_screen_buffers.c new file mode 100644 index 00000000000..d8141a3f5b9 --- /dev/null +++ b/src/gallium/drivers/i965/brw_screen_buffers.c @@ -0,0 +1,202 @@ + +#include "util/u_memory.h" +#include "util/u_math.h" + +#include "pipe/p_state.h" +#include "pipe/p_defines.h" +#include "pipe/p_inlines.h" + +#include "brw_screen.h" +#include "brw_winsys.h" + + + +static void * +brw_buffer_map_range( struct pipe_screen *screen, + struct pipe_buffer *buffer, + unsigned offset, + unsigned length, + unsigned usage ) +{ + struct brw_screen *bscreen = brw_screen(screen); + struct brw_winsys_screen *sws = bscreen->sws; + struct brw_buffer *buf = brw_buffer( buffer ); + + if (buf->user_buffer) + return buf->user_buffer; + + return sws->bo_map( buf->bo, + BRW_DATA_OTHER, + offset, + length, + (usage & PIPE_BUFFER_USAGE_CPU_WRITE) ? TRUE : FALSE, + (usage & PIPE_BUFFER_USAGE_DISCARD) ? TRUE : FALSE, + (usage & PIPE_BUFFER_USAGE_FLUSH_EXPLICIT) ? TRUE : FALSE); +} + +static void * +brw_buffer_map( struct pipe_screen *screen, + struct pipe_buffer *buffer, + unsigned usage ) +{ + struct brw_screen *bscreen = brw_screen(screen); + struct brw_winsys_screen *sws = bscreen->sws; + struct brw_buffer *buf = brw_buffer( buffer ); + + if (buf->user_buffer) + return buf->user_buffer; + + return sws->bo_map( buf->bo, + BRW_DATA_OTHER, + 0, + buf->base.size, + (usage & PIPE_BUFFER_USAGE_CPU_WRITE) ? TRUE : FALSE, + FALSE, + FALSE); +} + + +static void +brw_buffer_flush_mapped_range( struct pipe_screen *screen, + struct pipe_buffer *buffer, + unsigned offset, + unsigned length ) +{ + struct brw_screen *bscreen = brw_screen(screen); + struct brw_winsys_screen *sws = bscreen->sws; + struct brw_buffer *buf = brw_buffer( buffer ); + + if (buf->user_buffer) + return; + + sws->bo_flush_range( buf->bo, + offset, + length ); +} + + +static void +brw_buffer_unmap( struct pipe_screen *screen, + struct pipe_buffer *buffer ) +{ + struct brw_screen *bscreen = brw_screen(screen); + struct brw_winsys_screen *sws = bscreen->sws; + struct brw_buffer *buf = brw_buffer( buffer ); + + if (buf->bo) + sws->bo_unmap(buf->bo); +} + +static void +brw_buffer_destroy( struct pipe_buffer *buffer ) +{ + struct brw_buffer *buf = brw_buffer( buffer ); + + assert(!p_atomic_read(&buffer->reference.count)); + + bo_reference(&buf->bo, NULL); + FREE(buf); +} + + +static struct pipe_buffer * +brw_buffer_create(struct pipe_screen *screen, + unsigned alignment, + unsigned usage, + unsigned size) +{ + struct brw_screen *bscreen = brw_screen(screen); + struct brw_winsys_screen *sws = bscreen->sws; + struct brw_buffer *buf; + unsigned buffer_type; + enum pipe_error ret; + + buf = CALLOC_STRUCT(brw_buffer); + if (!buf) + return NULL; + + pipe_reference_init(&buf->base.reference, 1); + buf->base.screen = screen; + buf->base.alignment = alignment; + buf->base.usage = usage; + buf->base.size = size; + + switch (usage & (PIPE_BUFFER_USAGE_VERTEX | + PIPE_BUFFER_USAGE_INDEX | + PIPE_BUFFER_USAGE_PIXEL | + PIPE_BUFFER_USAGE_CONSTANT)) + { + case PIPE_BUFFER_USAGE_VERTEX: + case PIPE_BUFFER_USAGE_INDEX: + case (PIPE_BUFFER_USAGE_VERTEX|PIPE_BUFFER_USAGE_INDEX): + buffer_type = BRW_BUFFER_TYPE_VERTEX; + break; + + case PIPE_BUFFER_USAGE_PIXEL: + buffer_type = BRW_BUFFER_TYPE_PIXEL; + break; + + case PIPE_BUFFER_USAGE_CONSTANT: + buffer_type = BRW_BUFFER_TYPE_SHADER_CONSTANTS; + break; + + default: + buffer_type = BRW_BUFFER_TYPE_GENERIC; + break; + } + + ret = sws->bo_alloc( sws, buffer_type, + size, alignment, + &buf->bo ); + if (ret != PIPE_OK) + return NULL; + + return &buf->base; +} + + +static struct pipe_buffer * +brw_user_buffer_create(struct pipe_screen *screen, + void *ptr, + unsigned bytes) +{ + struct brw_buffer *buf; + + buf = CALLOC_STRUCT(brw_buffer); + if (!buf) + return NULL; + + buf->user_buffer = ptr; + + pipe_reference_init(&buf->base.reference, 1); + buf->base.screen = screen; + buf->base.alignment = 1; + buf->base.usage = 0; + buf->base.size = bytes; + + return &buf->base; +} + + +boolean brw_is_buffer_referenced_by_bo( struct brw_screen *brw_screen, + struct pipe_buffer *buffer, + struct brw_winsys_buffer *bo ) +{ + struct brw_buffer *buf = brw_buffer(buffer); + if (buf->bo == NULL) + return FALSE; + + return brw_screen->sws->bo_references( bo, buf->bo ); +} + + +void brw_screen_buffer_init(struct brw_screen *brw_screen) +{ + brw_screen->base.buffer_create = brw_buffer_create; + brw_screen->base.user_buffer_create = brw_user_buffer_create; + brw_screen->base.buffer_map = brw_buffer_map; + brw_screen->base.buffer_map_range = brw_buffer_map_range; + brw_screen->base.buffer_flush_mapped_range = brw_buffer_flush_mapped_range; + brw_screen->base.buffer_unmap = brw_buffer_unmap; + brw_screen->base.buffer_destroy = brw_buffer_destroy; +} |