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#!/usr/bin/python
import sys
import StringIO
# Bitfield constants for the 'variant' argument to generate_sigs
Proj = 1
Offset = 2
def vec_type(g, size):
if size == 1:
if g == "i":
return "int"
elif g == "u":
return "uint"
return "float"
return g + "vec" + str(size)
# Get the sampler dimension - i.e. sampler3D gives 3
def get_sampler_dim(sampler_type):
if sampler_type[0].isdigit():
sampler_dim = int(sampler_type[0])
elif sampler_type.startswith("Cube"):
sampler_dim = 3
else:
assert False ("coord_dim: invalid sampler_type: " + sampler_type)
return sampler_dim
# Get the coordinate dimension for a given sampler type.
# Array samplers also get +1 here since the layer is really an extra coordinate
def get_coord_dim(sampler_type):
coord_dim = get_sampler_dim(sampler_type)
if sampler_type.find("Array") != -1:
coord_dim += 1
return coord_dim
# Get the number of extra vector components (i.e. shadow comparitor)
def get_extra_dim(sampler_type, use_proj, unused_fields):
extra_dim = unused_fields
if sampler_type.find("Shadow") != -1:
extra_dim += 1
if use_proj:
extra_dim += 1
return extra_dim
def generate_sigs(g, tex_inst, sampler_type, variant = 0, unused_fields = 0):
coord_dim = get_coord_dim(sampler_type)
extra_dim = get_extra_dim(sampler_type, variant & Proj, unused_fields)
offset_dim = get_sampler_dim(sampler_type)
# Print parameters
print " (signature " + g + "vec4"
print " (parameters"
print " (declare (in) " + g + "sampler" + sampler_type + " sampler)"
print " (declare (in) " + vec_type("i" if tex_inst == "txf" else "", coord_dim + extra_dim) + " P)",
if tex_inst == "txb":
print "\n (declare (in) float bias)",
elif tex_inst == "txl":
print "\n (declare (in) float lod)",
elif tex_inst == "txf":
print "\n (declare (in) int lod)",
elif tex_inst == "txd":
grad_type = vec_type("", coord_dim)
print "\n (declare (in) " + grad_type + " dPdx)",
print "\n (declare (in) " + grad_type + " dPdy)",
print ")\n ((return (" + tex_inst + " (var_ref sampler)",
# Coordinate
if extra_dim > 0:
print "(swiz " + "xyzw"[:coord_dim] + " (var_ref P))",
else:
print "(var_ref P)",
# Offset
print "0",
if tex_inst != "txf":
# Projective divisor
if variant & Proj:
print "(swiz " + "xyzw"[coord_dim + extra_dim-1] + " (var_ref P))",
else:
print "1",
# Shadow comparitor
if sampler_type == "2DArrayShadow": # a special case:
print "(swiz w (var_ref P))", # ...array layer is z; shadow is w
elif sampler_type.endswith("Shadow"):
print "(swiz z (var_ref P))",
else:
print "()",
# Bias/explicit LOD/gradient:
if tex_inst == "txb":
print "(var_ref bias)",
elif tex_inst == "txl" or tex_inst == "txf":
print "(var_ref lod)",
elif tex_inst == "txd":
print "((var_ref dPdx) (var_ref dPdy))",
print "))))\n"
def generate_fiu_sigs(tex_inst, sampler_type, variant = 0, unused_fields = 0):
generate_sigs("", tex_inst, sampler_type, variant, unused_fields)
generate_sigs("i", tex_inst, sampler_type, variant, unused_fields)
generate_sigs("u", tex_inst, sampler_type, variant, unused_fields)
def start_function(name):
sys.stdout = StringIO.StringIO()
print "((function " + name
def end_function(fs, name):
print "))"
fs[name] = sys.stdout.getvalue();
sys.stdout.close()
# Generate all the functions and store them in the supplied dictionary.
# This is better than writing them to actual files since they should never be
# edited; it'd also be easy to confuse them with the many hand-generated files.
#
# Takes a dictionary as an argument.
def generate_texture_functions(fs):
start_function("texture")
generate_fiu_sigs("tex", "1D")
generate_fiu_sigs("tex", "2D")
generate_fiu_sigs("tex", "3D")
generate_fiu_sigs("tex", "Cube")
generate_fiu_sigs("tex", "1DArray")
generate_fiu_sigs("tex", "2DArray")
generate_fiu_sigs("txb", "1D")
generate_fiu_sigs("txb", "2D")
generate_fiu_sigs("txb", "3D")
generate_fiu_sigs("txb", "Cube")
generate_fiu_sigs("txb", "1DArray")
generate_fiu_sigs("txb", "2DArray")
end_function(fs, "texture")
start_function("textureProj")
generate_fiu_sigs("tex", "1D", Proj)
generate_fiu_sigs("tex", "1D", Proj, 2)
generate_fiu_sigs("tex", "2D", Proj)
generate_fiu_sigs("tex", "2D", Proj, 1)
generate_fiu_sigs("tex", "3D", Proj)
generate_fiu_sigs("txb", "1D", Proj)
generate_fiu_sigs("txb", "1D", Proj, 2)
generate_fiu_sigs("txb", "2D", Proj)
generate_fiu_sigs("txb", "2D", Proj, 1)
generate_fiu_sigs("txb", "3D", Proj)
end_function(fs, "textureProj")
start_function("textureLod")
generate_fiu_sigs("txl", "1D")
generate_fiu_sigs("txl", "2D")
generate_fiu_sigs("txl", "3D")
generate_fiu_sigs("txl", "Cube")
generate_fiu_sigs("txl", "1DArray")
generate_fiu_sigs("txl", "2DArray")
end_function(fs, "textureLod")
start_function("texelFetch")
generate_fiu_sigs("txf", "1D")
generate_fiu_sigs("txf", "2D")
generate_fiu_sigs("txf", "3D")
generate_fiu_sigs("txf", "1DArray")
generate_fiu_sigs("txf", "2DArray")
end_function(fs, "texelFetch")
start_function("textureProjLod")
generate_fiu_sigs("txl", "1D", Proj)
generate_fiu_sigs("txl", "1D", Proj, 2)
generate_fiu_sigs("txl", "2D", Proj)
generate_fiu_sigs("txl", "2D", Proj, 1)
generate_fiu_sigs("txl", "3D", Proj)
end_function(fs, "textureProjLod")
start_function("textureGrad")
generate_fiu_sigs("txd", "1D")
generate_fiu_sigs("txd", "2D")
generate_fiu_sigs("txd", "3D")
generate_fiu_sigs("txd", "Cube")
generate_fiu_sigs("txd", "1DArray")
generate_fiu_sigs("txd", "2DArray")
end_function(fs, "textureGrad")
start_function("textureProjGrad")
generate_fiu_sigs("txd", "1D", Proj)
generate_fiu_sigs("txd", "1D", Proj, 2)
generate_fiu_sigs("txd", "2D", Proj)
generate_fiu_sigs("txd", "2D", Proj, 1)
generate_fiu_sigs("txd", "3D", Proj)
end_function(fs, "textureProjGrad")
# ARB_texture_rectangle extension
start_function("texture2DRect")
generate_sigs("", "tex", "2DRect")
end_function(fs, "texture2DRect")
start_function("texture2DRectProj")
generate_sigs("", "tex", "2DRect", Proj)
generate_sigs("", "tex", "2DRect", Proj, 1)
end_function(fs, "texture2DRectProj")
start_function("shadow2DRect")
generate_sigs("", "tex", "2DRectShadow")
end_function(fs, "shadow2DRect")
start_function("shadow2DRectProj")
generate_sigs("", "tex", "2DRectShadow", Proj)
end_function(fs, "shadow2DRectProj")
# EXT_texture_array extension
start_function("texture1DArray")
generate_sigs("", "tex", "1DArray")
generate_sigs("", "txb", "1DArray")
end_function(fs, "texture1DArray")
start_function("texture1DArrayLod")
generate_sigs("", "txl", "1DArray")
end_function(fs, "texture1DArrayLod")
start_function("texture2DArray")
generate_sigs("", "tex", "2DArray")
generate_sigs("", "txb", "2DArray")
end_function(fs, "texture2DArray")
start_function("texture2DArrayLod")
generate_sigs("", "txl", "2DArray")
end_function(fs, "texture2DArrayLod")
start_function("shadow1DArray")
generate_sigs("", "tex", "1DArrayShadow")
generate_sigs("", "txb", "1DArrayShadow")
end_function(fs, "shadow1DArray")
start_function("shadow1DArrayLod")
generate_sigs("", "txl", "1DArrayShadow")
end_function(fs, "shadow1DArrayLod")
start_function("shadow2DArray")
generate_sigs("", "tex", "2DArrayShadow")
end_function(fs, "shadow2DArray")
# Deprecated (110/120 style) functions with silly names:
start_function("texture1D")
generate_sigs("", "tex", "1D")
generate_sigs("", "txb", "1D")
end_function(fs, "texture1D")
start_function("texture1DLod")
generate_sigs("", "txl", "1D")
end_function(fs, "texture1DLod")
start_function("texture1DProj")
generate_sigs("", "tex", "1D", Proj)
generate_sigs("", "tex", "1D", Proj, 2)
generate_sigs("", "txb", "1D", Proj)
generate_sigs("", "txb", "1D", Proj, 2)
end_function(fs, "texture1DProj")
start_function("texture1DProjLod")
generate_sigs("", "txl", "1D", Proj)
generate_sigs("", "txl", "1D", Proj, 2)
end_function(fs, "texture1DProjLod")
start_function("texture2D")
generate_sigs("", "tex", "2D")
generate_sigs("", "txb", "2D")
end_function(fs, "texture2D")
start_function("texture2DLod")
generate_sigs("", "txl", "2D")
end_function(fs, "texture2DLod")
start_function("texture2DProj")
generate_sigs("", "tex", "2D", Proj)
generate_sigs("", "tex", "2D", Proj, 1)
generate_sigs("", "txb", "2D", Proj)
generate_sigs("", "txb", "2D", Proj, 1)
end_function(fs, "texture2DProj")
start_function("texture2DProjLod")
generate_sigs("", "txl", "2D", Proj)
generate_sigs("", "txl", "2D", Proj, 1)
end_function(fs, "texture2DProjLod")
start_function("texture3D")
generate_sigs("", "tex", "3D")
generate_sigs("", "txb", "3D")
end_function(fs, "texture3D")
start_function("texture3DLod")
generate_sigs("", "txl", "3D")
end_function(fs, "texture3DLod")
start_function("texture3DProj")
generate_sigs("", "tex", "3D", Proj)
generate_sigs("", "txb", "3D", Proj)
end_function(fs, "texture3DProj")
start_function("texture3DProjLod")
generate_sigs("", "txl", "3D", Proj)
end_function(fs, "texture3DProjLod")
start_function("textureCube")
generate_sigs("", "tex", "Cube")
generate_sigs("", "txb", "Cube")
end_function(fs, "textureCube")
start_function("textureCubeLod")
generate_sigs("", "txl", "Cube")
end_function(fs, "textureCubeLod")
start_function("shadow1D")
generate_sigs("", "tex", "1DShadow", False, 1)
generate_sigs("", "txb", "1DShadow", False, 1)
end_function(fs, "shadow1D")
start_function("shadow1DLod")
generate_sigs("", "txl", "1DShadow", False, 1)
end_function(fs, "shadow1DLod")
start_function("shadow1DProj")
generate_sigs("", "tex", "1DShadow", Proj, 1)
generate_sigs("", "txb", "1DShadow", Proj, 1)
end_function(fs, "shadow1DProj")
start_function("shadow1DProjLod")
generate_sigs("", "txl", "1DShadow", Proj, 1)
end_function(fs, "shadow1DProjLod")
start_function("shadow2D")
generate_sigs("", "tex", "2DShadow")
generate_sigs("", "txb", "2DShadow")
end_function(fs, "shadow2D")
start_function("shadow2DLod")
generate_sigs("", "txl", "2DShadow")
end_function(fs, "shadow2DLod")
start_function("shadow2DProj")
generate_sigs("", "tex", "2DShadow", Proj)
generate_sigs("", "txb", "2DShadow", Proj)
end_function(fs, "shadow2DProj")
start_function("shadow2DProjLod")
generate_sigs("", "txl", "2DShadow", Proj)
end_function(fs, "shadow2DProjLod")
sys.stdout = sys.__stdout__
return fs
# If you actually run this script, it'll print out all the functions.
if __name__ == "__main__":
fs = {}
generate_texture_functions(fs);
for k, v in fs.iteritems():
print v
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