[Mesa-dev] [RFC PATCH 08/26] glsl: add support for ARB_texture_multisample
Chris Forbes
chrisf at ijw.co.nz
Sat Dec 29 04:35:21 PST 2012
V2: emit `sample` parameter properly for multisample texelFetch()
Signed-off-by: Chris Forbes <chrisf at ijw.co.nz>
---
src/glsl/builtin_types.h | 19 +++++++++++++++++++
.../builtins/profiles/ARB_texture_multisample.glsl | 18 ++++++++++++++++++
src/glsl/builtins/tools/generate_builtins.py | 1 +
src/glsl/builtins/tools/texture_builtins.py | 21 +++++++++++++++++++--
src/glsl/glcpp/glcpp-parse.y | 4 ++++
src/glsl/glsl_lexer.ll | 16 ++++++++++------
src/glsl/glsl_parser.yy | 11 +++++++++--
src/glsl/glsl_parser_extras.cpp | 1 +
src/glsl/glsl_parser_extras.h | 2 ++
src/glsl/glsl_types.cpp | 17 +++++++++++++++++
src/glsl/glsl_types.h | 5 ++++-
src/glsl/standalone_scaffolding.cpp | 1 +
12 files changed, 105 insertions(+), 11 deletions(-)
create mode 100644 src/glsl/builtins/profiles/ARB_texture_multisample.glsl
diff --git a/src/glsl/builtin_types.h b/src/glsl/builtin_types.h
index a4c995f..7c18a98 100644
--- a/src/glsl/builtin_types.h
+++ b/src/glsl/builtin_types.h
@@ -347,3 +347,22 @@ const glsl_type glsl_type::builtin_ARB_texture_cube_map_array_types[] = {
GLSL_SAMPLER_DIM_CUBE, 0, 1, GLSL_TYPE_UINT, "usamplerCubeArray"),
};
/*@}*/
+
+/** \name Sampler types added by GL_ARB_texture_multisample
+ */
+/*@{*/
+const glsl_type glsl_type::builtin_ARB_texture_multisample_types[] = {
+ glsl_type(GL_SAMPLER_2D_MULTISAMPLE,
+ GLSL_SAMPLER_DIM_MS, 0, 0, GLSL_TYPE_FLOAT, "sampler2DMS"),
+ glsl_type(GL_INT_SAMPLER_2D_MULTISAMPLE,
+ GLSL_SAMPLER_DIM_MS, 0, 0, GLSL_TYPE_INT, "isampler2DMS"),
+ glsl_type(GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE,
+ GLSL_SAMPLER_DIM_MS, 0, 0, GLSL_TYPE_UINT, "usampler2DMS"),
+ glsl_type(GL_SAMPLER_2D_MULTISAMPLE_ARRAY,
+ GLSL_SAMPLER_DIM_MS, 0, 1, GLSL_TYPE_FLOAT, "sampler2DMSArray"),
+ glsl_type(GL_INT_SAMPLER_2D_MULTISAMPLE_ARRAY,
+ GLSL_SAMPLER_DIM_MS, 0, 1, GLSL_TYPE_INT, "isampler2DMSArray"),
+ glsl_type(GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE_ARRAY,
+ GLSL_SAMPLER_DIM_MS, 0, 1, GLSL_TYPE_UINT, "usampler2DMSArray"),
+};
+/*@}*/
diff --git a/src/glsl/builtins/profiles/ARB_texture_multisample.glsl b/src/glsl/builtins/profiles/ARB_texture_multisample.glsl
new file mode 100644
index 0000000..4fa67e9
--- /dev/null
+++ b/src/glsl/builtins/profiles/ARB_texture_multisample.glsl
@@ -0,0 +1,18 @@
+#version 130
+#extension GL_ARB_texture_multisample : enable
+
+ivec2 textureSize( sampler2DMS sampler);
+ivec2 textureSize(isampler2DMS sampler);
+ivec2 textureSize(usampler2DMS sampler);
+
+ivec3 textureSize( sampler2DMSArray sampler);
+ivec3 textureSize(isampler2DMSArray sampler);
+ivec3 textureSize(usampler2DMSArray sampler);
+
+ vec4 texelFetch( sampler2DMS sampler, ivec2 P, int sample);
+ivec4 texelFetch(isampler2DMS sampler, ivec2 P, int sample);
+uvec4 texelFetch(usampler2DMS sampler, ivec2 P, int sample);
+
+ vec4 texelFetch( sampler2DMSArray sampler, ivec3 P, int sample);
+ivec4 texelFetch(isampler2DMSArray sampler, ivec3 P, int sample);
+uvec4 texelFetch(usampler2DMSArray sampler, ivec3 P, int sample);
diff --git a/src/glsl/builtins/tools/generate_builtins.py b/src/glsl/builtins/tools/generate_builtins.py
index 2cfb1a3..2b2a691 100755
--- a/src/glsl/builtins/tools/generate_builtins.py
+++ b/src/glsl/builtins/tools/generate_builtins.py
@@ -189,6 +189,7 @@ read_builtins(GLenum target, const char *protos, const char **functions, unsigne
st->OES_EGL_image_external_enable = true;
st->ARB_shader_bit_encoding_enable = true;
st->ARB_texture_cube_map_array_enable = true;
+ st->ARB_texture_multisample_enable = true;
_mesa_glsl_initialize_types(st);
sh->ir = new(sh) exec_list;
diff --git a/src/glsl/builtins/tools/texture_builtins.py b/src/glsl/builtins/tools/texture_builtins.py
index 654eb06..54c7e45 100755
--- a/src/glsl/builtins/tools/texture_builtins.py
+++ b/src/glsl/builtins/tools/texture_builtins.py
@@ -57,6 +57,15 @@ def get_txs_dim(sampler_type):
return 2
return get_coord_dim(sampler_type)
+def has_lod(sampler_type):
+ if 'Buffer' in sampler_type: return False
+ if 'Rect' in sampler_type: return False
+ if 'MS' in sampler_type: return False
+ return True
+
+def has_sample(sampler_type):
+ return 'MS' in sampler_type
+
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)
@@ -77,8 +86,10 @@ def generate_sigs(g, tex_inst, sampler_type, variant = 0, unused_fields = 0):
print "\n (declare (in) " + vec_type("i" if tex_inst == "txf" else "", coord_dim + extra_dim) + " P)",
if tex_inst == "txl":
print "\n (declare (in) float lod)",
- elif ((tex_inst == "txf" or tex_inst == "txs") and "Buffer" not in sampler_type and "Rect" not in sampler_type):
+ elif ((tex_inst == "txf" or tex_inst == "txs") and has_lod(sampler_type)):
print "\n (declare (in) int lod)",
+ elif tex_inst == "txf" and has_sample(sampler_type):
+ print "\n (declare (in) int sample)",
elif tex_inst == "txd":
grad_type = vec_type("", sampler_dim)
print "\n (declare (in) " + grad_type + " dPdx)",
@@ -126,8 +137,10 @@ def generate_sigs(g, tex_inst, sampler_type, variant = 0, unused_fields = 0):
if tex_inst == "txb":
print "(var_ref bias)",
elif tex_inst == "txs" or tex_inst == "txf":
- if "Rect" not in sampler_type and "Buffer" not in sampler_type:
+ if has_lod(sampler_type):
print "(var_ref lod)",
+ elif tex_inst == 'txf' and has_sample(sampler_type):
+ print "(var_ref sample)",
else:
print "(constant int (0))"
elif tex_inst == "txl":
@@ -173,6 +186,8 @@ def generate_texture_functions(fs):
generate_fiu_sigs("txs", "Buffer")
generate_fiu_sigs("txs", "CubeArray")
generate_sigs("", "txs", "CubeArrayShadow")
+ generate_fiu_sigs("txs", "2DMS")
+ generate_fiu_sigs("txs", "2DMSArray")
end_function(fs, "textureSize")
start_function("texture")
@@ -283,6 +298,8 @@ def generate_texture_functions(fs):
generate_fiu_sigs("txf", "1DArray")
generate_fiu_sigs("txf", "2DArray")
generate_fiu_sigs("txf", "Buffer")
+ generate_fiu_sigs("txf", "2DMS")
+ generate_fiu_sigs("txf", "2DMSArray")
end_function(fs, "texelFetch")
start_function("texelFetchOffset")
diff --git a/src/glsl/glcpp/glcpp-parse.y b/src/glsl/glcpp/glcpp-parse.y
index 380a1d9..f8bd97a 100644
--- a/src/glsl/glcpp/glcpp-parse.y
+++ b/src/glsl/glcpp/glcpp-parse.y
@@ -1222,6 +1222,10 @@ glcpp_parser_create (const struct gl_extensions *extensions, int api)
if (extensions->ARB_texture_cube_map_array)
add_builtin_define(parser, "GL_ARB_texture_cube_map_array", 1);
+
+ if (extensions->ARB_texture_multisample)
+ add_builtin_define(parser, "GL_ARB_texture_multisample", 1);
+
}
}
diff --git a/src/glsl/glsl_lexer.ll b/src/glsl/glsl_lexer.ll
index 2f66c58..daf5b23 100644
--- a/src/glsl/glsl_lexer.ll
+++ b/src/glsl/glsl_lexer.ll
@@ -315,6 +315,15 @@ usamplerCube KEYWORD(130, 300, 130, 300, USAMPLERCUBE);
usampler1DArray KEYWORD(130, 300, 130, 0, USAMPLER1DARRAY);
usampler2DArray KEYWORD(130, 300, 130, 300, USAMPLER2DARRAY);
+ /* additional keywords in ARB_texture_multisample, included in GLSL 1.50 */
+ /* these are reserved but not defined in GLSL 3.00 */
+sampler2DMS KEYWORD_WITH_ALT(150, 300, 150, 0, yyextra->ARB_texture_multisample_enable, SAMPLER2DMS);
+isampler2DMS KEYWORD_WITH_ALT(150, 300, 150, 0, yyextra->ARB_texture_multisample_enable, ISAMPLER2DMS);
+usampler2DMS KEYWORD_WITH_ALT(150, 300, 150, 0, yyextra->ARB_texture_multisample_enable, USAMPLER2DMS);
+sampler2DMSArray KEYWORD_WITH_ALT(150, 300, 150, 0, yyextra->ARB_texture_multisample_enable, SAMPLER2DMSARRAY);
+isampler2DMSArray KEYWORD_WITH_ALT(150, 300, 150, 0, yyextra->ARB_texture_multisample_enable, ISAMPLER2DMSARRAY);
+usampler2DMSArray KEYWORD_WITH_ALT(150, 300, 150, 0, yyextra->ARB_texture_multisample_enable, USAMPLER2DMSARRAY);
+
samplerCubeArray {
if (yyextra->ARB_texture_cube_map_array_enable)
return SAMPLERCUBEARRAY;
@@ -340,6 +349,7 @@ samplerCubeArrayShadow {
return IDENTIFIER;
}
+
samplerExternalOES {
if (yyextra->OES_EGL_image_external_enable)
return SAMPLEREXTERNALOES;
@@ -531,12 +541,6 @@ atomic_uint KEYWORD(0, 300, 0, 0, ATOMIC_UINT);
patch KEYWORD(0, 300, 0, 0, PATCH);
sample KEYWORD(0, 300, 0, 0, SAMPLE);
subroutine KEYWORD(0, 300, 0, 0, SUBROUTINE);
-sampler2DMS KEYWORD(0, 300, 0, 0, SAMPLER2DMS);
-isampler2DMS KEYWORD(0, 300, 0, 0, ISAMPLER2DMS);
-usampler2DMS KEYWORD(0, 300, 0, 0, USAMPLER2DMS);
-sampler2DMSArray KEYWORD(0, 300, 0, 0, SAMPLER2DMSARRAY);
-isampler2DMSArray KEYWORD(0, 300, 0, 0, ISAMPLER2DMSARRAY);
-usampler2DMSArray KEYWORD(0, 300, 0, 0, USAMPLER2DMSARRAY);
[_a-zA-Z][_a-zA-Z0-9]* {
diff --git a/src/glsl/glsl_parser.yy b/src/glsl/glsl_parser.yy
index d849466..97c6b82 100644
--- a/src/glsl/glsl_parser.yy
+++ b/src/glsl/glsl_parser.yy
@@ -108,6 +108,8 @@ static void yyerror(YYLTYPE *loc, _mesa_glsl_parse_state *st, const char *msg)
%token USAMPLER2DARRAY USAMPLERCUBEARRAY
%token SAMPLER2DRECT ISAMPLER2DRECT USAMPLER2DRECT SAMPLER2DRECTSHADOW
%token SAMPLERBUFFER ISAMPLERBUFFER USAMPLERBUFFER
+%token SAMPLER2DMS ISAMPLER2DMS USAMPLER2DMS
+%token SAMPLER2DMSARRAY ISAMPLER2DMSARRAY USAMPLER2DMSARRAY
%token SAMPLEREXTERNALOES
%token STRUCT VOID_TOK WHILE
%token <identifier> IDENTIFIER TYPE_IDENTIFIER NEW_IDENTIFIER
@@ -138,8 +140,7 @@ static void yyerror(YYLTYPE *loc, _mesa_glsl_parse_state *st, const char *msg)
%token SAMPLER3DRECT
%token SIZEOF CAST NAMESPACE USING
%token COHERENT RESTRICT READONLY WRITEONLY RESOURCE ATOMIC_UINT PATCH SAMPLE
-%token SUBROUTINE SAMPLER2DMS ISAMPLER2DMS USAMPLER2DMS SAMPLER2DMSARRAY
-%token ISAMPLER2DMSARRAY USAMPLER2DMSARRAY
+%token SUBROUTINE
%token ERROR_TOK
@@ -1459,6 +1460,12 @@ basic_type_specifier_nonarray:
| USAMPLER2DARRAY { $$ = "usampler2DArray"; }
| USAMPLERBUFFER { $$ = "usamplerBuffer"; }
| USAMPLERCUBEARRAY { $$ = "usamplerCubeArray"; }
+ | SAMPLER2DMS { $$ = "sampler2DMS"; }
+ | ISAMPLER2DMS { $$ = "isampler2DMS"; }
+ | USAMPLER2DMS { $$ = "usampler2DMS"; }
+ | SAMPLER2DMSARRAY { $$ = "sampler2DMSArray"; }
+ | ISAMPLER2DMSARRAY { $$ = "isampler2DMSArray"; }
+ | USAMPLER2DMSARRAY { $$ = "usampler2DMSArray"; }
;
precision_qualifier:
diff --git a/src/glsl/glsl_parser_extras.cpp b/src/glsl/glsl_parser_extras.cpp
index b460c86..408fe04 100644
--- a/src/glsl/glsl_parser_extras.cpp
+++ b/src/glsl/glsl_parser_extras.cpp
@@ -462,6 +462,7 @@ static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = {
EXT(ARB_uniform_buffer_object, true, false, true, true, false, ARB_uniform_buffer_object),
EXT(OES_standard_derivatives, false, false, true, false, true, OES_standard_derivatives),
EXT(ARB_texture_cube_map_array, true, false, true, true, false, ARB_texture_cube_map_array),
+ EXT(ARB_texture_multisample, true, false, true, true, false, ARB_texture_multisample),
};
#undef EXT
diff --git a/src/glsl/glsl_parser_extras.h b/src/glsl/glsl_parser_extras.h
index 46e0784..dbe9f76 100644
--- a/src/glsl/glsl_parser_extras.h
+++ b/src/glsl/glsl_parser_extras.h
@@ -272,6 +272,8 @@ struct _mesa_glsl_parse_state {
bool OES_standard_derivatives_warn;
bool ARB_texture_cube_map_array_enable;
bool ARB_texture_cube_map_array_warn;
+ bool ARB_texture_multisample_enable;
+ bool ARB_texture_multisample_warn;
/*@}*/
/** Extensions supported by the OpenGL implementation. */
diff --git a/src/glsl/glsl_types.cpp b/src/glsl/glsl_types.cpp
index 71b1850..0fc9c6d 100644
--- a/src/glsl/glsl_types.cpp
+++ b/src/glsl/glsl_types.cpp
@@ -154,6 +154,8 @@ glsl_type::sampler_index() const
return TEXTURE_BUFFER_INDEX;
case GLSL_SAMPLER_DIM_EXTERNAL:
return TEXTURE_EXTERNAL_INDEX;
+ case GLSL_SAMPLER_DIM_MS:
+ return (t->sampler_array) ? TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX: TEXTURE_2D_MULTISAMPLE_INDEX;
default:
assert(!"Should not get here.");
return TEXTURE_BUFFER_INDEX;
@@ -301,6 +303,16 @@ glsl_type::generate_ARB_texture_cube_map_array_types(glsl_symbol_table *symtab,
}
void
+glsl_type::generate_ARB_texture_multisample_types(glsl_symbol_table *symtab,
+ bool warn)
+{
+ bool skip_1d = false;
+ add_types_to_symbol_table(symtab, builtin_ARB_texture_multisample_types,
+ Elements(builtin_ARB_texture_multisample_types),
+ warn, skip_1d);
+}
+
+void
_mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state)
{
if (state->es_shader) {
@@ -368,6 +380,11 @@ _mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state)
glsl_type::generate_ARB_texture_cube_map_array_types(state->symbols,
state->ARB_texture_cube_map_array_warn);
}
+
+ if (state->ARB_texture_multisample_enable) {
+ glsl_type::generate_ARB_texture_multisample_types(state->symbols,
+ state->ARB_texture_multisample_warn);
+ }
}
diff --git a/src/glsl/glsl_types.h b/src/glsl/glsl_types.h
index d6f5c10..8f35c8d 100644
--- a/src/glsl/glsl_types.h
+++ b/src/glsl/glsl_types.h
@@ -66,7 +66,8 @@ enum glsl_sampler_dim {
GLSL_SAMPLER_DIM_CUBE,
GLSL_SAMPLER_DIM_RECT,
GLSL_SAMPLER_DIM_BUF,
- GLSL_SAMPLER_DIM_EXTERNAL
+ GLSL_SAMPLER_DIM_EXTERNAL,
+ GLSL_SAMPLER_DIM_MS
};
#ifdef __cplusplus
@@ -523,6 +524,7 @@ private:
static const glsl_type builtin_EXT_texture_buffer_object_types[];
static const glsl_type builtin_OES_EGL_image_external_types[];
static const glsl_type builtin_ARB_texture_cube_map_array_types[];
+ static const glsl_type builtin_ARB_texture_multisample_types[];
/*@}*/
/**
@@ -548,6 +550,7 @@ private:
static void generate_OES_texture_3D_types(glsl_symbol_table *, bool);
static void generate_OES_EGL_image_external_types(glsl_symbol_table *, bool);
static void generate_ARB_texture_cube_map_array_types(glsl_symbol_table *, bool);
+ static void generate_ARB_texture_multisample_types(glsl_symbol_table *, bool);
/*@}*/
/**
diff --git a/src/glsl/standalone_scaffolding.cpp b/src/glsl/standalone_scaffolding.cpp
index 33d3804..25b46e9 100644
--- a/src/glsl/standalone_scaffolding.cpp
+++ b/src/glsl/standalone_scaffolding.cpp
@@ -83,6 +83,7 @@ void initialize_context_to_defaults(struct gl_context *ctx, gl_api api)
ctx->Extensions.ARB_shader_bit_encoding = true;
ctx->Extensions.OES_standard_derivatives = true;
ctx->Extensions.ARB_texture_cube_map_array = true;
+ ctx->Extensions.ARB_texture_multisample = true;
ctx->Const.GLSLVersion = 120;
--
1.8.0.3
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