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st/mesa: add support for ARB_texture_multisample (v3)

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This adds support to the mesa state tracker for ARB_texture_multisample.

hardware doesn't seem to use a different texture instructions, so
I don't think we need to create one for TGSI at this time.

Thanks to Marek for fixes to sample number picking.

v2: idr pointed out a bug in how we picked the max sample counts,
use new internal format chooser interface to pick proper answers.
v3: use st_choose_format directly, it was okay, fix anding of masks.

Reviewed-by: Marek Olšák <maraeo@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2013-03-04 06:17:11 +10:00
parent 1d90ee5ef5
commit f152da6bf9
12 changed files with 96 additions and 20 deletions
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34
src/mesa/state_tracker/st_extensions.c
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@@ -37,7 +37,7 @@
#include "st_context.h"
#include "st_extensions.h"
#include "st_format.h"
static int _min(int a, int b)
{
@@ -397,7 +397,8 @@ void st_init_extensions(struct st_context *st)
{ o(MESA_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
{ o(OES_standard_derivatives), PIPE_CAP_SM3 },
{ o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY }
{ o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
{ o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE }
};
/* Required: render target and sampler support */
@@ -657,10 +658,33 @@ void st_init_extensions(struct st_context *st)
/* Maximum sample count. */
for (i = 16; i > 0; --i) {
if (screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_UNORM,
PIPE_TEXTURE_2D, i,
PIPE_BIND_RENDER_TARGET)) {
enum pipe_format pformat = st_choose_format(st, GL_RGBA,
GL_NONE, GL_NONE,
PIPE_TEXTURE_2D, i,
PIPE_BIND_RENDER_TARGET, FALSE);
if (pformat != PIPE_FORMAT_NONE) {
ctx->Const.MaxSamples = i;
ctx->Const.MaxColorTextureSamples = i;
break;
}
}
for (i = ctx->Const.MaxSamples; i > 0; --i) {
enum pipe_format pformat = st_choose_format(st, GL_DEPTH_STENCIL,
GL_NONE, GL_NONE,
PIPE_TEXTURE_2D, i,
PIPE_BIND_DEPTH_STENCIL, FALSE);
if (pformat != PIPE_FORMAT_NONE) {
ctx->Const.MaxDepthTextureSamples = i;
break;
}
}
for (i = ctx->Const.MaxSamples; i > 0; --i) {
enum pipe_format pformat = st_choose_format(st, GL_RGBA_INTEGER,
GL_NONE, GL_NONE,
PIPE_TEXTURE_2D, i,
PIPE_BIND_RENDER_TARGET, FALSE);
if (pformat != PIPE_FORMAT_NONE) {
ctx->Const.MaxIntegerSamples = i;
break;
}
}