mesa: Remove EXT_texture_env_add extension enable flag

All drivers remaining in Mesa support this extension.  This extension
is either required or optional features in desktop OpenGL, OpenGL ES
1.x, and OpenGL ES 2.x.  The existing support is already partially
broken in Mesa (e.g., querying GL_TEXTURE_ENV_MODE in OpenGL ES 2.x).
This patch does not change the situation in any way.

This extension was previously not supported on mach64, mga (G200),
savage (Savage3D and other pre-Savage4), sis, and tdfx (Voodoo
Banshee).

Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>

11 files changed, 4 insertions, 18 deletions

diff --git a/src/mesa/drivers/dri/intel/intel_extensions.c b/src/mesa/drivers/dri/intel/intel_extensions.c
index ccef8ab4672..909b3bb36de 100644
--- a/src/mesa/drivers/dri/intel/intel_extensions.c
+++ b/src/mesa/drivers/dri/intel/intel_extensions.c
@@ -77,7 +77,6 @@ intelInitExtensions(struct gl_context *ctx)
    ctx->Extensions.EXT_secondary_color = true;
    ctx->Extensions.EXT_separate_shader_objects = true;
    ctx->Extensions.EXT_stencil_wrap = true;
-   ctx->Extensions.EXT_texture_env_add = true;
    ctx->Extensions.EXT_texture_env_combine = true;
    ctx->Extensions.EXT_texture_env_dot3 = true;
    ctx->Extensions.EXT_texture_filter_anisotropic = true;
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_context.c b/src/mesa/drivers/dri/nouveau/nouveau_context.c
index 00d78bb99f2..fe1b4961131 100644
--- a/src/mesa/drivers/dri/nouveau/nouveau_context.c
+++ b/src/mesa/drivers/dri/nouveau/nouveau_context.c
@@ -127,7 +127,6 @@ nouveau_context_init(struct gl_context *ctx, struct nouveau_screen *screen,
 	ctx->Extensions.EXT_packed_depth_stencil = true;
 	ctx->Extensions.EXT_secondary_color = true;
 	ctx->Extensions.EXT_stencil_wrap = true;
-	ctx->Extensions.EXT_texture_env_add = true;
 	ctx->Extensions.EXT_texture_env_combine = true;
 	ctx->Extensions.EXT_texture_filter_anisotropic = true;
 	ctx->Extensions.EXT_texture_lod_bias = true;
diff --git a/src/mesa/drivers/dri/r200/r200_context.c b/src/mesa/drivers/dri/r200/r200_context.c
index 8b63fd2b175..16cd3336732 100644
--- a/src/mesa/drivers/dri/r200/r200_context.c
+++ b/src/mesa/drivers/dri/r200/r200_context.c
@@ -370,7 +370,6 @@ GLboolean r200CreateContext( gl_api api,
    ctx->Extensions.EXT_packed_depth_stencil = true;
    ctx->Extensions.EXT_secondary_color = true;
    ctx->Extensions.EXT_stencil_wrap = true;
-   ctx->Extensions.EXT_texture_env_add = true;
    ctx->Extensions.EXT_texture_env_combine = true;
    ctx->Extensions.EXT_texture_env_dot3 = true;
    ctx->Extensions.EXT_texture_filter_anisotropic = true;
diff --git a/src/mesa/drivers/dri/r300/r300_context.c b/src/mesa/drivers/dri/r300/r300_context.c
index 079cfcfa772..13815d4f0ab 100644
--- a/src/mesa/drivers/dri/r300/r300_context.c
+++ b/src/mesa/drivers/dri/r300/r300_context.c
@@ -386,7 +386,6 @@ static void r300InitGLExtensions(struct gl_context *ctx)
 	ctx->Extensions.EXT_secondary_color = true;
 	ctx->Extensions.EXT_shadow_funcs = true;
 	ctx->Extensions.EXT_stencil_wrap = true;
-	ctx->Extensions.EXT_texture_env_add = true;
 	ctx->Extensions.EXT_texture_env_combine = true;
 	ctx->Extensions.EXT_texture_env_dot3 = true;
 	ctx->Extensions.EXT_texture_filter_anisotropic = true;
diff --git a/src/mesa/drivers/dri/r600/r600_context.c b/src/mesa/drivers/dri/r600/r600_context.c
index 464af5d4b4f..06339c33336 100644
--- a/src/mesa/drivers/dri/r600/r600_context.c
+++ b/src/mesa/drivers/dri/r600/r600_context.c
@@ -287,7 +287,6 @@ static void r600InitGLExtensions(struct gl_context *ctx)
 	ctx->Extensions.EXT_shadow_funcs = true;
 	ctx->Extensions.EXT_stencil_two_side = true;
 	ctx->Extensions.EXT_stencil_wrap = true;
-	ctx->Extensions.EXT_texture_env_add = true;
 	ctx->Extensions.EXT_texture_env_combine = true;
 	ctx->Extensions.EXT_texture_env_dot3 = true;
 	ctx->Extensions.EXT_texture_filter_anisotropic = true;
diff --git a/src/mesa/drivers/dri/radeon/radeon_context.c b/src/mesa/drivers/dri/radeon/radeon_context.c
index 3eab18e6297..c9aa2a20602 100644
--- a/src/mesa/drivers/dri/radeon/radeon_context.c
+++ b/src/mesa/drivers/dri/radeon/radeon_context.c
@@ -323,7 +323,6 @@ r100CreateContext( gl_api api,
    ctx->Extensions.EXT_packed_depth_stencil = true;
    ctx->Extensions.EXT_secondary_color = true;
    ctx->Extensions.EXT_stencil_wrap = true;
-   ctx->Extensions.EXT_texture_env_add = true;
    ctx->Extensions.EXT_texture_env_combine = true;
    ctx->Extensions.EXT_texture_env_dot3 = true;
    ctx->Extensions.EXT_texture_filter_anisotropic = true;
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index 0b31ea894d8..d3ec064cc97 100644
--- a/src/mesa/main/extensions.c
+++ b/src/mesa/main/extensions.c
@@ -123,7 +123,7 @@ static const struct extension extension_table[] = {
    { "GL_ARB_texture_compression",                 o(dummy_true),                              GL,             2000 },
    { "GL_ARB_texture_compression_rgtc",            o(ARB_texture_compression_rgtc),            GL,             2004 },
    { "GL_ARB_texture_cube_map",                    o(ARB_texture_cube_map),                    GL,             1999 },
-   { "GL_ARB_texture_env_add",                     o(EXT_texture_env_add),                     GL,             1999 },
+   { "GL_ARB_texture_env_add",                     o(dummy_true),                              GL,             1999 },
    { "GL_ARB_texture_env_combine",                 o(ARB_texture_env_combine),                 GL,             2001 },
    { "GL_ARB_texture_env_crossbar",                o(ARB_texture_env_crossbar),                GL,             2001 },
    { "GL_ARB_texture_env_dot3",                    o(ARB_texture_env_dot3),                    GL,             2001 },
@@ -191,7 +191,7 @@ static const struct extension extension_table[] = {
    { "GL_EXT_texture_compression_s3tc",            o(EXT_texture_compression_s3tc),            GL,             2000 },
    { "GL_EXT_texture_cube_map",                    o(ARB_texture_cube_map),                    GL,             2001 },
    { "GL_EXT_texture_edge_clamp",                  o(dummy_true),                              GL,             1997 },
-   { "GL_EXT_texture_env_add",                     o(EXT_texture_env_add),                     GL,             1999 },
+   { "GL_EXT_texture_env_add",                     o(dummy_true),                              GL,             1999 },
    { "GL_EXT_texture_env_combine",                 o(EXT_texture_env_combine),                 GL,             2000 },
    { "GL_EXT_texture_env_dot3",                    o(EXT_texture_env_dot3),                    GL,             2000 },
    { "GL_EXT_texture_filter_anisotropic",          o(EXT_texture_filter_anisotropic),          GL | ES1 | ES2, 1999 },
@@ -473,7 +473,6 @@ _mesa_enable_sw_extensions(struct gl_context *ctx)
    ctx->Extensions.EXT_stencil_two_side = GL_TRUE;
    ctx->Extensions.EXT_texture_array = GL_TRUE;
    ctx->Extensions.EXT_texture_compression_latc = GL_TRUE;
-   ctx->Extensions.EXT_texture_env_add = GL_TRUE;
    ctx->Extensions.EXT_texture_env_combine = GL_TRUE;
    ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
    ctx->Extensions.EXT_texture_filter_anisotropic = GL_TRUE;
@@ -537,7 +536,6 @@ _mesa_enable_1_3_extensions(struct gl_context *ctx)
    ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
    ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
    ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
-   ctx->Extensions.EXT_texture_env_add = GL_TRUE;
    /*ctx->Extensions.ARB_transpose_matrix = GL_TRUE;*/
 }
 
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index b2fdb373273..a3d9c245ad2 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -2834,7 +2834,6 @@ struct gl_extensions
    GLboolean EXT_texture_array;
    GLboolean EXT_texture_compression_latc;
    GLboolean EXT_texture_compression_s3tc;
-   GLboolean EXT_texture_env_add;
    GLboolean EXT_texture_env_combine;
    GLboolean EXT_texture_env_dot3;
    GLboolean EXT_texture_filter_anisotropic;
diff --git a/src/mesa/main/texenv.c b/src/mesa/main/texenv.c
index 1df3890d471..9d47c7bba45 100644
--- a/src/mesa/main/texenv.c
+++ b/src/mesa/main/texenv.c
@@ -60,15 +60,13 @@ set_env_mode(struct gl_context *ctx,
    case GL_BLEND:
    case GL_DECAL:
    case GL_REPLACE:
+   case GL_ADD:
       legal = GL_TRUE;
       break;
    case GL_REPLACE_EXT:
       mode = GL_REPLACE; /* GL_REPLACE_EXT != GL_REPLACE */
       legal = GL_TRUE;
       break;
-   case GL_ADD:
-      legal = ctx->Extensions.EXT_texture_env_add;
-      break;
    case GL_COMBINE:
       legal = (ctx->Extensions.EXT_texture_env_combine ||
                ctx->Extensions.ARB_texture_env_combine);
diff --git a/src/mesa/main/version.c b/src/mesa/main/version.c
index f006a494aaf..a0bf9158992 100644
--- a/src/mesa/main/version.c
+++ b/src/mesa/main/version.c
@@ -87,7 +87,6 @@ compute_version(struct gl_context *ctx)
 
    const GLboolean ver_1_3 = (ctx->Extensions.ARB_texture_border_clamp &&
                               ctx->Extensions.ARB_texture_cube_map &&
-                              ctx->Extensions.EXT_texture_env_add &&
                               ctx->Extensions.ARB_texture_env_combine &&
                               ctx->Extensions.ARB_texture_env_dot3);
    const GLboolean ver_1_4 = (ver_1_3 &&
@@ -244,8 +243,7 @@ compute_version_es1(struct gl_context *ctx)
    static const int max = 100;
 
    /* OpenGL ES 1.0 is derived from OpenGL 1.3 */
-   const GLboolean ver_1_0 = (ctx->Extensions.EXT_texture_env_add &&
-                              ctx->Extensions.ARB_texture_env_combine &&
+   const GLboolean ver_1_0 = (ctx->Extensions.ARB_texture_env_combine &&
                               ctx->Extensions.ARB_texture_env_dot3);
    /* OpenGL ES 1.1 is derived from OpenGL 1.5 */
    const GLboolean ver_1_1 = (ver_1_0 &&
diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index 9e0491fa103..205c1d5d8e2 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -278,7 +278,6 @@ void st_init_extensions(struct st_context *st)
    ctx->Extensions.EXT_provoking_vertex = GL_TRUE;
    ctx->Extensions.EXT_secondary_color = GL_TRUE;
    ctx->Extensions.EXT_stencil_wrap = GL_TRUE;
-   ctx->Extensions.EXT_texture_env_add = GL_TRUE;
    ctx->Extensions.EXT_texture_env_combine = GL_TRUE;
    ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
    ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;