mesa: Remove EXT_texture_env_combine 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.

It looks like the only hardware supported by Mesa that cannot do
ARB_texture_env_combine is pre-NV10 NVIDA chips.  It appears that
these chips cannot do the GL_SUBTRACT mode.  Based on looking at older
copies of nvOpenGLspecs.pdf found on the net, NVIDIA never supported
ARB_texture_env_combine on those chips either.

This extension was previously not supported on mach64, mga (G200),
r128, savage, sis, and tdfx (Voodoo Banshee and Voodoo3).

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

6 files changed, 0 insertions, 6 deletions

diff --git a/src/mesa/drivers/dri/intel/intel_extensions.c b/src/mesa/drivers/dri/intel/intel_extensions.c
index 909b3bb36de..114750822af 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_combine = true;
    ctx->Extensions.EXT_texture_env_dot3 = true;
    ctx->Extensions.EXT_texture_filter_anisotropic = true;
    ctx->Extensions.EXT_texture_lod_bias = true;
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_context.c b/src/mesa/drivers/dri/nouveau/nouveau_context.c
index fe1b4961131..adf91bac316 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_combine = true;
 	ctx->Extensions.EXT_texture_filter_anisotropic = true;
 	ctx->Extensions.EXT_texture_lod_bias = true;
 	ctx->Extensions.NV_blend_square = true;
diff --git a/src/mesa/drivers/dri/r200/r200_context.c b/src/mesa/drivers/dri/r200/r200_context.c
index 16cd3336732..34ad83fa7ff 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_combine = true;
    ctx->Extensions.EXT_texture_env_dot3 = true;
    ctx->Extensions.EXT_texture_filter_anisotropic = true;
    ctx->Extensions.EXT_texture_lod_bias = true;
diff --git a/src/mesa/drivers/dri/r300/r300_context.c b/src/mesa/drivers/dri/r300/r300_context.c
index 13815d4f0ab..c2d9a4c3f1b 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_combine = true;
 	ctx->Extensions.EXT_texture_env_dot3 = true;
 	ctx->Extensions.EXT_texture_filter_anisotropic = true;
 	ctx->Extensions.EXT_texture_lod_bias = true;
diff --git a/src/mesa/drivers/dri/r600/r600_context.c b/src/mesa/drivers/dri/r600/r600_context.c
index 06339c33336..05f9836f023 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_combine = true;
 	ctx->Extensions.EXT_texture_env_dot3 = true;
 	ctx->Extensions.EXT_texture_filter_anisotropic = true;
 	ctx->Extensions.EXT_texture_lod_bias = true;
diff --git a/src/mesa/drivers/dri/radeon/radeon_context.c b/src/mesa/drivers/dri/radeon/radeon_context.c
index c9aa2a20602..d8ec331a387 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_combine = true;
    ctx->Extensions.EXT_texture_env_dot3 = true;
    ctx->Extensions.EXT_texture_filter_anisotropic = true;
    ctx->Extensions.EXT_texture_lod_bias = true;