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glsl: add support for the textureSamples function

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Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Ilia Mirkin 2015-08-27 23:06:57 -04:00
parent fb18ee9ba6
commit 0c7fbcb844
1 changed files with 31 additions and 0 deletions
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31
src/glsl/builtin_functions.cpp
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@ -427,6 +427,13 @@ shader_image_size(const _mesa_glsl_parse_state *state)
state->ARB_shader_image_size_enable;
}
static bool
shader_samples(const _mesa_glsl_parse_state *state)
{
return state->is_version(450, 0) ||
state->ARB_shader_texture_image_samples_enable;
}
static bool
gs_streams(const _mesa_glsl_parse_state *state)
{
@ -666,6 +673,7 @@ private:
B1(all);
B1(not);
BA2(textureSize);
B1(textureSamples);
/** Flags to _texture() */
#define TEX_PROJECT 1
@ -1407,6 +1415,16 @@ builtin_builder::create_builtins()
_textureSize(texture_multisample_array, glsl_type::ivec3_type, glsl_type::usampler2DMSArray_type),
NULL);
add_function("textureSamples",
_textureSamples(glsl_type::sampler2DMS_type),
_textureSamples(glsl_type::isampler2DMS_type),
_textureSamples(glsl_type::usampler2DMS_type),
_textureSamples(glsl_type::sampler2DMSArray_type),
_textureSamples(glsl_type::isampler2DMSArray_type),
_textureSamples(glsl_type::usampler2DMSArray_type),
NULL);
add_function("texture",
_texture(ir_tex, v130, glsl_type::vec4_type, glsl_type::sampler1D_type, glsl_type::float_type),
_texture(ir_tex, v130, glsl_type::ivec4_type, glsl_type::isampler1D_type, glsl_type::float_type),
@ -4169,6 +4187,19 @@ builtin_builder::_textureSize(builtin_available_predicate avail,
return sig;
}
ir_function_signature *
builtin_builder::_textureSamples(const glsl_type *sampler_type)
{
ir_variable *s = in_var(sampler_type, "sampler");
MAKE_SIG(glsl_type::int_type, shader_samples, 1, s);
ir_texture *tex = new(mem_ctx) ir_texture(ir_texture_samples);
tex->set_sampler(new(mem_ctx) ir_dereference_variable(s), glsl_type::int_type);
body.emit(ret(tex));
return sig;
}
ir_function_signature *
builtin_builder::_texture(ir_texture_opcode opcode,
builtin_available_predicate avail,