Mesa (master): mesa: Use correct data for MAX_{VERTEX, GEOMETRY}_VARYING_COMPONENTS_ARB queries

[Ian Romanick]

Module: Mesa
Branch: master
Commit: d91249df1a9f99813794aac09c4fba77831da1f7
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=d91249df1a9f99813794aac09c4fba77831da1f7

Author: Ian Romanick <ian.d.romanick at intel.com>
Date:   Tue Sep 10 09:35:58 2013 -0500

mesa: Use correct data for MAX_{VERTEX,GEOMETRY}_VARYING_COMPONENTS_ARB queries

Previously gl_constants::MaxVaryingComponents was used.  Now
gl_constants::VertexProgram::MaxOutputs and
gl_constants::GeometryProgram::MaxOutputs are used.

This means that st_extensions.c had to be updated to set these fields
instead of MaxVaryingComponents.  It was previously the only place that
set MaxVaryingComponents.

I believe that the structure is allocated by calloc, so the value should
be initialized to zero in non-Gallium drivers before and after my
change.  Right now nobody enables GL_ARB_geometry_shader4, so it's
pretty much dead code anyway.

Signed-off-by: Ian Romanick <ian.d.romanick at intel.com>
Reviewed-by: Brian Paul <brianp at vmware.com>
Reviewed-by: Marek Olšák <marek.olsak at amd.com>
Reviewed-by: Paul Berry <stereotype441 at gmail.com>
Cc: Zack Rusin <zackr at vmware.com>

---

 src/mesa/main/get_hash_params.py       |    4 ++--
 src/mesa/state_tracker/st_extensions.c |    5 ++++-
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/mesa/main/get_hash_params.py b/src/mesa/main/get_hash_params.py
index ca312ee..48bd371 100644
--- a/src/mesa/main/get_hash_params.py
+++ b/src/mesa/main/get_hash_params.py
@@ -651,8 +651,8 @@ descriptor=[
   [ "MAX_GEOMETRY_OUTPUT_VERTICES_ARB", "CONTEXT_INT(Const.MaxGeometryOutputVertices), extra_ARB_geometry_shader4" ],
   [ "MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_ARB", "CONTEXT_INT(Const.MaxGeometryTotalOutputComponents), extra_ARB_geometry_shader4" ],
   [ "MAX_GEOMETRY_UNIFORM_COMPONENTS_ARB", "CONTEXT_INT(Const.GeometryProgram.MaxUniformComponents), extra_ARB_geometry_shader4" ],
-  [ "MAX_GEOMETRY_VARYING_COMPONENTS_ARB", "CONTEXT_INT(Const.MaxVaryingComponents), extra_ARB_geometry_shader4" ],
-  [ "MAX_VERTEX_VARYING_COMPONENTS_ARB", "CONTEXT_INT(Const.MaxVaryingComponents), extra_ARB_geometry_shader4" ],
+  [ "MAX_GEOMETRY_VARYING_COMPONENTS_ARB", "CONTEXT_INT(Const.GeometryProgram.MaxOutputComponents), extra_ARB_geometry_shader4" ],
+  [ "MAX_VERTEX_VARYING_COMPONENTS_ARB", "CONTEXT_INT(Const.VertexProgram.MaxOutputComponents), extra_ARB_geometry_shader4" ],
 
 # GL_ARB_color_buffer_float
   [ "RGBA_FLOAT_MODE_ARB", "BUFFER_FIELD(Visual.floatMode, TYPE_BOOLEAN), extra_core_ARB_color_buffer_float_and_new_buffers" ],
diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index 0b7001b..97dd732 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -256,7 +256,10 @@ void st_init_limits(struct st_context *st)
    c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
                                             PIPE_SHADER_CAP_MAX_INPUTS);
    c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
-   c->MaxVaryingComponents = c->MaxVarying * 4;
+   c->FragmentProgram.MaxInputComponents = c->MaxVarying * 4;
+   c->VertexProgram.MaxOutputComponents = c->MaxVarying * 4;
+   c->GeometryProgram.MaxInputComponents = c->MaxVarying * 4;
+   c->GeometryProgram.MaxOutputComponents = c->MaxVarying * 4;
 
    c->MinProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
    c->MaxProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);