diff options
Diffstat (limited to 'src/gallium/drivers/nv50/nv50_clear.c')
| -rw-r--r-- | src/gallium/drivers/nv50/nv50_clear.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/src/gallium/drivers/nv50/nv50_clear.c b/src/gallium/drivers/nv50/nv50_clear.c new file mode 100644 index 0000000000..ee7cf281f4 --- /dev/null +++ b/src/gallium/drivers/nv50/nv50_clear.c @@ -0,0 +1,74 @@ +/* + * Copyright 2008 Ben Skeggs + * + * 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, sublicense, + * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS 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. + */ + +#include "pipe/p_context.h" +#include "pipe/p_defines.h" +#include "pipe/p_state.h" + +#include "nv50_context.h" + +void +nv50_clear(struct pipe_context *pipe, unsigned buffers, + const float *rgba, double depth, unsigned stencil) +{ + struct nv50_context *nv50 = nv50_context(pipe); + struct nouveau_channel *chan = nv50->screen->base.channel; + struct nouveau_grobj *tesla = nv50->screen->tesla; + struct pipe_framebuffer_state *fb = &nv50->framebuffer; + unsigned mode = 0, i; + const unsigned dirty = nv50->dirty; + + /* don't need NEW_BLEND, NV50TCL_COLOR_MASK doesn't affect CLEAR_BUFFERS */ + nv50->dirty &= NV50_NEW_FRAMEBUFFER | NV50_NEW_SCISSOR; + if (!nv50_state_validate(nv50, 64)) + return; + + if (buffers & PIPE_CLEAR_COLOR && fb->nr_cbufs) { + BEGIN_RING(chan, tesla, NV50TCL_CLEAR_COLOR(0), 4); + OUT_RING (chan, fui(rgba[0])); + OUT_RING (chan, fui(rgba[1])); + OUT_RING (chan, fui(rgba[2])); + OUT_RING (chan, fui(rgba[3])); + mode |= 0x3c; + } + + if (buffers & PIPE_CLEAR_DEPTH) { + BEGIN_RING(chan, tesla, NV50TCL_CLEAR_DEPTH, 1); + OUT_RING (chan, fui(depth)); + mode |= NV50TCL_CLEAR_BUFFERS_Z; + } + if (buffers & PIPE_CLEAR_STENCIL) { + BEGIN_RING(chan, tesla, NV50TCL_CLEAR_STENCIL, 1); + OUT_RING (chan, stencil & 0xff); + mode |= NV50TCL_CLEAR_BUFFERS_S; + } + + BEGIN_RING(chan, tesla, NV50TCL_CLEAR_BUFFERS, 1); + OUT_RING (chan, mode); + + for (i = 1; i < fb->nr_cbufs; i++) { + BEGIN_RING(chan, tesla, NV50TCL_CLEAR_BUFFERS, 1); + OUT_RING (chan, (i << 6) | 0x3c); + } + nv50->dirty = dirty; +} + |