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[g3dvl] respect maximum instruction for idct render targets

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This commit is contained in:
Christian König
2011-06-01 20:37:57 +02:00
parent a019b60dd3
commit ded2a9a628
1 changed files with 8 additions and 3 deletions
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src/gallium/auxiliary/vl/vl_mpeg12_decoder.c
+8 -3
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@@ -709,15 +709,20 @@ init_zscan(struct vl_mpeg12_decoder *dec, const struct format_config* format_con
static bool
init_idct(struct vl_mpeg12_decoder *dec, const struct format_config* format_config)
{
unsigned nr_of_idct_render_targets;
unsigned nr_of_idct_render_targets, max_inst;
enum pipe_format formats[3];
struct pipe_sampler_view *matrix = NULL;
nr_of_idct_render_targets = dec->pipe->screen->get_param(dec->pipe->screen, PIPE_CAP_MAX_RENDER_TARGETS);
max_inst = dec->pipe->screen->get_shader_param(dec->pipe->screen, PIPE_SHADER_FRAGMENT, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
// more than 4 render targets usually doesn't makes any seens
nr_of_idct_render_targets = MIN2(nr_of_idct_render_targets, 4);
// Just assume we need 32 inst per render target, not 100% true, but should work in most cases
if (nr_of_idct_render_targets >= 4 && max_inst >= 32*4)
// more than 4 render targets usually doesn't makes any seens
nr_of_idct_render_targets = 4;
else
nr_of_idct_render_targets = 1;
formats[0] = formats[1] = formats[2] = format_config->idct_source_format;
dec->idct_source = vl_video_buffer_init(dec->base.context, dec->pipe,