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gallium: allow choosing which colorbuffers to clear

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Required for glClearBuffer, which only clears one colorbuffer attachment.

Example:
   If the first colorbuffer is float and the second one is int:
      pipe->clear(pipe, PIPE_CLEAR_COLOR0, float_clear_color, ...);
      pipe->clear(pipe, PIPE_CLEAR_COLOR1, int_clear_color, ...);

This doesn't need any driver changes yet, because all drivers just use:
  if (flags & PIPE_CLEAR_COLOR) ..

The drivers which support GL 3.0 will have to implement it properly though.
This commit is contained in:
Marek Olšák
2013-12-04 00:56:24 +01:00
parent 0612005aa6
commit 164dc6216a
6 changed files with 23 additions and 11 deletions
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2
src/gallium/auxiliary/postprocess/pp_mlaa.c
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@@ -138,7 +138,7 @@ pp_jimenezmlaa_run(struct pp_queue_t *ppq, struct pipe_resource *in,
pp_filter_set_fb(p); pp_filter_set_fb(p);
pp_filter_misc_state(p); pp_filter_misc_state(p);
cso_set_depth_stencil_alpha(p->cso, &mstencil); cso_set_depth_stencil_alpha(p->cso, &mstencil);
p->pipe->clear(p->pipe, PIPE_CLEAR_STENCIL | PIPE_CLEAR_COLOR, p->pipe->clear(p->pipe, PIPE_CLEAR_STENCIL | PIPE_CLEAR_COLOR0,
&p->clear_color, 0, 0); &p->clear_color, 0, 0);
cso_single_sampler(p->cso, PIPE_SHADER_FRAGMENT, 0, &p->sampler_point); cso_single_sampler(p->cso, PIPE_SHADER_FRAGMENT, 0, &p->sampler_point);

2
src/gallium/auxiliary/postprocess/pp_run.c
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@@ -309,5 +309,5 @@ void
pp_filter_set_clear_fb(struct pp_program *p) pp_filter_set_clear_fb(struct pp_program *p)
{ {
cso_set_framebuffer(p->cso, &p->framebuffer); cso_set_framebuffer(p->cso, &p->framebuffer);
p->pipe->clear(p->pipe, PIPE_CLEAR_COLOR, &p->clear_color, 0, 0); p->pipe->clear(p->pipe, PIPE_CLEAR_COLOR0, &p->clear_color, 0, 0);
} }

3
src/gallium/auxiliary/util/u_clear.h
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@@ -42,9 +42,10 @@ util_clear(struct pipe_context *pipe,
struct pipe_framebuffer_state *framebuffer, unsigned buffers, struct pipe_framebuffer_state *framebuffer, unsigned buffers,
const union pipe_color_union *color, double depth, unsigned stencil) const union pipe_color_union *color, double depth, unsigned stencil)
{ {
if (buffers & PIPE_CLEAR_COLOR) {
unsigned i; unsigned i;
for (i = 0; i < framebuffer->nr_cbufs; i++) { for (i = 0; i < framebuffer->nr_cbufs; i++) {
if (buffers & (PIPE_CLEAR_COLOR0 << i)) {
struct pipe_surface *ps = framebuffer->cbufs[i]; struct pipe_surface *ps = framebuffer->cbufs[i];
pipe->clear_render_target(pipe, ps, color, 0, 0, ps->width, ps->height); pipe->clear_render_target(pipe, ps, color, 0, 0, ps->width, ps->height);
} }

2
src/gallium/drivers/r300/r300_blit.c
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@@ -130,7 +130,7 @@ static boolean r300_cbzb_clear_allowed(struct r300_context *r300,
(struct pipe_framebuffer_state*)r300->fb_state.state; (struct pipe_framebuffer_state*)r300->fb_state.state;
/* Only color clear allowed, and only one colorbuffer. */ /* Only color clear allowed, and only one colorbuffer. */
if (clear_buffers != PIPE_CLEAR_COLOR || fb->nr_cbufs != 1) if ((clear_buffers & ~PIPE_CLEAR_COLOR) != 0 || fb->nr_cbufs != 1)
return FALSE; return FALSE;
return r300_surface(fb->cbufs[0])->cbzb_allowed; return r300_surface(fb->cbufs[0])->cbzb_allowed;

19
src/gallium/include/pipe/p_defines.h
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@@ -188,11 +188,22 @@ enum pipe_texture_target {
/** /**
* Clear buffer bits * Clear buffer bits
*/ */
#define PIPE_CLEAR_DEPTH (1 << 0)
#define PIPE_CLEAR_STENCIL (1 << 1)
#define PIPE_CLEAR_COLOR0 (1 << 2)
#define PIPE_CLEAR_COLOR1 (1 << 3)
#define PIPE_CLEAR_COLOR2 (1 << 4)
#define PIPE_CLEAR_COLOR3 (1 << 5)
#define PIPE_CLEAR_COLOR4 (1 << 6)
#define PIPE_CLEAR_COLOR5 (1 << 7)
#define PIPE_CLEAR_COLOR6 (1 << 8)
#define PIPE_CLEAR_COLOR7 (1 << 9)
/** Combined flags */
/** All color buffers currently bound */ /** All color buffers currently bound */
#define PIPE_CLEAR_COLOR (1 << 0) #define PIPE_CLEAR_COLOR (PIPE_CLEAR_COLOR0 | PIPE_CLEAR_COLOR1 | \
#define PIPE_CLEAR_DEPTH (1 << 1) PIPE_CLEAR_COLOR2 | PIPE_CLEAR_COLOR3 | \
#define PIPE_CLEAR_STENCIL (1 << 2) PIPE_CLEAR_COLOR4 | PIPE_CLEAR_COLOR5 | \
/** Depth/stencil combined */ PIPE_CLEAR_COLOR6 | PIPE_CLEAR_COLOR7)
#define PIPE_CLEAR_DEPTHSTENCIL (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL) #define PIPE_CLEAR_DEPTHSTENCIL (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL)
/** /**

2
src/gallium/state_trackers/vega/api_masks.c
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@@ -97,7 +97,7 @@ void vegaClear(VGint x, VGint y,
clear_color.f[1] = ctx->state.vg.clear_color[1]; clear_color.f[1] = ctx->state.vg.clear_color[1];
clear_color.f[2] = ctx->state.vg.clear_color[2]; clear_color.f[2] = ctx->state.vg.clear_color[2];
clear_color.f[3] = ctx->state.vg.clear_color[3]; clear_color.f[3] = ctx->state.vg.clear_color[3];
ctx->pipe->clear(ctx->pipe, PIPE_CLEAR_COLOR | PIPE_CLEAR_DEPTHSTENCIL, ctx->pipe->clear(ctx->pipe, PIPE_CLEAR_COLOR0 | PIPE_CLEAR_DEPTHSTENCIL,
&clear_color, 1., 0); &clear_color, 1., 0);
} else if (renderer_clear_begin(ctx->renderer)) { } else if (renderer_clear_begin(ctx->renderer)) {
/* XXX verify coord round-off */ /* XXX verify coord round-off */