static int
llvmpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
{
switch(shader)
{
case PIPE_SHADER_FRAGMENT:
switch (param) {
default:
return gallivm_get_shader_param(param);
}
case PIPE_SHADER_VERTEX:
case PIPE_SHADER_GEOMETRY:
switch (param) {
case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
/* At this time, the draw module and llvmpipe driver only
* support vertex shader texture lookups when LLVM is enabled in
* the draw module.
*/
if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
return PIPE_MAX_SAMPLERS;
else
return 0;
case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
return PIPE_MAX_SHADER_SAMPLER_VIEWS;
else
return 0;
default:
return draw_get_shader_param(shader, param);
}
default:
return 0;
}
}
static int
swr_get_shader_param(struct pipe_screen *screen,
unsigned shader,
enum pipe_shader_cap param)
{
if (shader == PIPE_SHADER_VERTEX || shader == PIPE_SHADER_FRAGMENT)
return gallivm_get_shader_param(param);
// Todo: geometry, tesselation, compute
return 0;
}
/**
* XXX: Results for PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS because there are two
* different ways of setting textures, and drivers typically only support one.
*/
int
draw_get_shader_param(unsigned shader, enum pipe_shader_cap param)
{
#ifdef HAVE_LLVM
if (draw_get_option_use_llvm()) {
switch(shader) {
case PIPE_SHADER_VERTEX:
case PIPE_SHADER_GEOMETRY:
return gallivm_get_shader_param(param);
default:
return 0;
}
}
#endif
return draw_get_shader_param_no_llvm(shader, param);
}
