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mesa: implement AMD_shader_stencil_export

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It's just an alias of the ARB variant with some GLSL compiler changes.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Marek Olšák
2011-05-02 16:41:04 +02:00
parent 93754d8499
commit 5ba2e7adf0
4 changed files with 33 additions and 0 deletions
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10
src/glsl/glsl_parser_extras.cpp
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@@ -255,6 +255,16 @@ _mesa_glsl_process_extension(const char *name, YYLTYPE *name_locp,
state->AMD_conservative_depth_enable = (ext_mode != extension_disable);
state->AMD_conservative_depth_warn = (ext_mode == extension_warn);
unsupported = !state->extensions->AMD_conservative_depth;
} else if (strcmp(name, "GL_AMD_shader_stencil_export") == 0) {
state->AMD_shader_stencil_export_enable = (ext_mode != extension_disable);
state->AMD_shader_stencil_export_warn = (ext_mode == extension_warn);
/* This extension is only supported in fragment shaders.
* Both the ARB and AMD variants share the same ARB flag
* in gl_extensions.
*/
unsupported = (state->target != fragment_shader)
|| !state->extensions->ARB_shader_stencil_export;
} else if (strcmp(name, "GL_OES_texture_3D") == 0 && state->es_shader) {
state->OES_texture_3D_enable = (ext_mode != extension_disable);
state->OES_texture_3D_warn = (ext_mode == extension_warn);

2
src/glsl/glsl_parser_extras.h
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@@ -172,6 +172,8 @@ struct _mesa_glsl_parse_state {
unsigned ARB_shader_stencil_export_warn:1;
unsigned AMD_conservative_depth_enable:1;
unsigned AMD_conservative_depth_warn:1;
unsigned AMD_shader_stencil_export_enable:1;
unsigned AMD_shader_stencil_export_warn:1;
unsigned OES_texture_3D_enable:1;
unsigned OES_texture_3D_warn:1;
/*@}*/

20
src/glsl/ir_variable.cpp
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@@ -766,6 +766,22 @@ generate_ARB_shader_stencil_export_variables(exec_list *instructions,
fd->warn_extension = "GL_ARB_shader_stencil_export";
}
static void
generate_AMD_shader_stencil_export_variables(exec_list *instructions,
struct _mesa_glsl_parse_state *state,
bool warn)
{
/* gl_FragStencilRefAMD is only available in the fragment shader.
*/
ir_variable *const fd =
add_variable(instructions, state->symbols,
"gl_FragStencilRefAMD", glsl_type::int_type,
ir_var_out, FRAG_RESULT_STENCIL);
if (warn)
fd->warn_extension = "GL_AMD_shader_stencil_export";
}
static void
generate_120_fs_variables(exec_list *instructions,
struct _mesa_glsl_parse_state *state)
@@ -818,6 +834,10 @@ initialize_fs_variables(exec_list *instructions,
if (state->ARB_shader_stencil_export_enable)
generate_ARB_shader_stencil_export_variables(instructions, state,
state->ARB_shader_stencil_export_warn);
if (state->AMD_shader_stencil_export_enable)
generate_AMD_shader_stencil_export_variables(instructions, state,
state->AMD_shader_stencil_export_warn);
}
void

1
src/mesa/main/extensions.c
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@@ -260,6 +260,7 @@ static const struct extension extension_table[] = {
{ "GL_3DFX_texture_compression_FXT1", o(TDFX_texture_compression_FXT1), GL, 1999 },
{ "GL_AMD_conservative_depth", o(AMD_conservative_depth), GL, 2009 },
{ "GL_AMD_draw_buffers_blend", o(ARB_draw_buffers_blend), GL, 2009 },
{ "GL_AMD_shader_stencil_export", o(ARB_shader_stencil_export), GL, 2009 },
{ "GL_APPLE_client_storage", o(APPLE_client_storage), GL, 2002 },
{ "GL_APPLE_object_purgeable", o(APPLE_object_purgeable), GL, 2006 },
{ "GL_APPLE_packed_pixels", o(APPLE_packed_pixels), GL, 2002 },