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vc4: Add a flag in the screen to track control flow support. 

For now it's still always false, but I need it in place for kernel
backwards compat support as I extend the backend for control flow.
This commit is contained in:
Eric Anholt 2016-07-11 10:55:18 -07:00
parent 05bcd9dd96
commit ab1d40b84a
3 changed files with 14 additions and 1 deletions
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1
src/gallium/drivers/vc4/vc4_program.c
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@ -1765,6 +1765,7 @@ vc4_shader_ntq(struct vc4_context *vc4, enum qstage stage,
{
struct vc4_compile *c = qir_compile_init();
c->vc4 = vc4;
c->stage = stage;
c->shader_state = &key->shader_state->base;
c->program_id = key->shader_state->program_id;

13
src/gallium/drivers/vc4/vc4_screen.c
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@ -329,8 +329,10 @@ vc4_screen_get_shader_param(struct pipe_screen *pscreen, unsigned shader,
case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
return 16384;
case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
return 0;
return vc4_screen(pscreen)->has_control_flow;
case PIPE_SHADER_CAP_MAX_INPUTS:
if (shader == PIPE_SHADER_FRAGMENT)
return 8;
@ -494,6 +496,12 @@ vc4_screen_is_format_supported(struct pipe_screen *pscreen,
return retval == usage;
}
static bool
vc4_supports_branches(struct vc4_screen *screen)
{
return false;
}
struct pipe_screen *
vc4_screen_create(int fd)
{
@ -512,6 +520,9 @@ vc4_screen_create(int fd)
screen->fd = fd;
list_inithead(&screen->bo_cache.time_list);
if (vc4_supports_branches(screen))
screen->has_control_flow = true;
vc4_fence_init(screen);
vc4_debug = debug_get_option_vc4_debug();

1
src/gallium/drivers/vc4/vc4_screen.h
View File

@ -75,6 +75,7 @@ struct vc4_screen {
uint32_t bo_size;
uint32_t bo_count;
bool has_control_flow;
};
static inline struct vc4_screen *