From: Ian Romanick <[email protected]>
Page 77 (page 91 of the PDF) says about glGetActiveAttrib:
"The returned attribute name can be the name of a generic
attribute or a conventional attribute (which begin with the prefix
"gl_", see the OpenGL Shading Language specification for a
complete list)."
Page 261 (page 275 of the PDF) says about glGetProgramiv:
"If pname is ACTIVE_ATTRIBUTES, the number of active attributes in
program is returned."
It doesn't say anything about built-in vs. user-defined attributes.
>From the language around glGetActiveAttrib and the lack of an
exclusion of built-in attributes, which exists other places (e.g.,
around glBindAttribLocation), we can infer that GL_ACTIVE_ATTRIBUTES
should include the active attribute count. It should also be included
in the values returned by glGetActiveAttrib.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=43138
---
src/mesa/main/shader_query.cpp | 9 +++------
1 files changed, 3 insertions(+), 6 deletions(-)
diff --git a/src/mesa/main/shader_query.cpp b/src/mesa/main/shader_query.cpp
index 38bacdb..8ab1812 100644
--- a/src/mesa/main/shader_query.cpp
+++ b/src/mesa/main/shader_query.cpp
@@ -107,8 +107,7 @@ _mesa_GetActiveAttribARB(GLhandleARB program, GLuint
desired_index,
if (var == NULL
|| var->mode != ir_var_in
- || var->location == -1
- || var->location < VERT_ATTRIB_GENERIC0)
+ || var->location == -1)
continue;
if (current_index == desired_index) {
@@ -199,8 +198,7 @@ _mesa_count_active_attribs(struct gl_shader_program *shProg)
if (var == NULL
|| var->mode != ir_var_in
- || var->location == -1
- || var->location < VERT_ATTRIB_GENERIC0)
+ || var->location == -1)
continue;
i++;
@@ -226,8 +224,7 @@ _mesa_longest_attribute_name_length(struct
gl_shader_program *shProg)
if (var == NULL
|| var->mode != ir_var_in
- || var->location == -1
- || var->location < VERT_ATTRIB_GENERIC0)
+ || var->location == -1)
continue;
const size_t len = strlen(var->name);
--
1.7.6.4
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