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glsl: Add support for EmitStreamVertex() and EndStreamPrimitive().

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Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
This commit is contained in:
Iago Toral Quiroga 2014-06-20 10:43:57 +02:00
parent 4b3fc21032
commit e877aadde0
1 changed files with 58 additions and 0 deletions
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58
src/glsl/builtin_functions.cpp
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@ -359,6 +359,12 @@ shader_image_load_store(const _mesa_glsl_parse_state *state)
state->ARB_shader_image_load_store_enable);
}
static bool
gs_streams(const _mesa_glsl_parse_state *state)
{
return gpu_shader5(state) && gs_only(state);
}
/** @} */
/******************************************************************************/
@ -594,6 +600,10 @@ private:
B0(EmitVertex)
B0(EndPrimitive)
ir_function_signature *_EmitStreamVertex(builtin_available_predicate avail,
const glsl_type *stream_type);
ir_function_signature *_EndStreamPrimitive(builtin_available_predicate avail,
const glsl_type *stream_type);
B2(textureQueryLod);
B1(textureQueryLevels);
@ -1708,6 +1718,14 @@ builtin_builder::create_builtins()
add_function("EmitVertex", _EmitVertex(), NULL);
add_function("EndPrimitive", _EndPrimitive(), NULL);
add_function("EmitStreamVertex",
_EmitStreamVertex(gs_streams, glsl_type::uint_type),
_EmitStreamVertex(gs_streams, glsl_type::int_type),
NULL);
add_function("EndStreamPrimitive",
_EndStreamPrimitive(gs_streams, glsl_type::uint_type),
_EndStreamPrimitive(gs_streams, glsl_type::int_type),
NULL);
add_function("textureQueryLOD",
_textureQueryLod(glsl_type::sampler1D_type, glsl_type::float_type),
@ -3878,6 +3896,26 @@ builtin_builder::_EmitVertex()
return sig;
}
ir_function_signature *
builtin_builder::_EmitStreamVertex(builtin_available_predicate avail,
const glsl_type *stream_type)
{
/* Section 8.12 (Geometry Shader Functions) of the GLSL 4.0 spec says:
*
* "Emit the current values of output variables to the current output
* primitive on stream stream. The argument to stream must be a constant
* integral expression."
*/
ir_variable *stream =
new(mem_ctx) ir_variable(stream_type, "stream", ir_var_const_in);
MAKE_SIG(glsl_type::void_type, avail, 1, stream);
body.emit(new(mem_ctx) ir_emit_vertex(var_ref(stream)));
return sig;
}
ir_function_signature *
builtin_builder::_EndPrimitive()
{
@ -3889,6 +3927,26 @@ builtin_builder::_EndPrimitive()
return sig;
}
ir_function_signature *
builtin_builder::_EndStreamPrimitive(builtin_available_predicate avail,
const glsl_type *stream_type)
{
/* Section 8.12 (Geometry Shader Functions) of the GLSL 4.0 spec says:
*
* "Completes the current output primitive on stream stream and starts
* a new one. The argument to stream must be a constant integral
* expression."
*/
ir_variable *stream =
new(mem_ctx) ir_variable(stream_type, "stream", ir_var_const_in);
MAKE_SIG(glsl_type::void_type, avail, 1, stream);
body.emit(new(mem_ctx) ir_end_primitive(var_ref(stream)));
return sig;
}
ir_function_signature *
builtin_builder::_textureQueryLod(const glsl_type *sampler_type,
const glsl_type *coord_type)