mesa: GL_ARB_half_float_pixel is not optional

Almost every driver already supported it.  All current and future
Gallium drivers always support it, and most existing classic drivers
support it.

This only changes radeon and nouveau.

This extension only adds data types that can be passed to, for example,
glTexImage2D.  It does not add internal formats.  Since you can already
pass GL_FLOAT to glTexImage2D this shouldn't pose any additional issues
with those drivers.  Note that r200 and i915 already supported this
extension, and they don't support floating-point textures either.

Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>

5 files changed, 9 insertions, 37 deletions

diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index 5f741fbd2ec..bc63b26dbaa 100644
--- a/src/mesa/main/extensions.c
+++ b/src/mesa/main/extensions.c
@@ -106,7 +106,7 @@ static const struct extension extension_table[] = {
    { "GL_ARB_framebuffer_sRGB",                    o(EXT_framebuffer_sRGB),                    GL,             1998 },
    { "GL_ARB_get_program_binary",                  o(dummy_true),                              GL,             2010 },
    { "GL_ARB_gpu_shader5",                         o(ARB_gpu_shader5),                         GL,             2010 },
-   { "GL_ARB_half_float_pixel",                    o(ARB_half_float_pixel),                    GL,             2003 },
+   { "GL_ARB_half_float_pixel",                    o(dummy_true),                              GL,             2003 },
    { "GL_ARB_half_float_vertex",                   o(ARB_half_float_vertex),                   GL,             2008 },
    { "GL_ARB_instanced_arrays",                    o(ARB_instanced_arrays),                    GL,             2008 },
    { "GL_ARB_internalformat_query",                o(ARB_internalformat_query),                GL,             2011 },
@@ -401,7 +401,6 @@ _mesa_enable_sw_extensions(struct gl_context *ctx)
    ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE;
    ctx->Extensions.ARB_fragment_shader = GL_TRUE;
    ctx->Extensions.ARB_framebuffer_object = GL_TRUE;
-   ctx->Extensions.ARB_half_float_pixel = GL_TRUE;
    ctx->Extensions.ARB_half_float_vertex = GL_TRUE;
    ctx->Extensions.ARB_map_buffer_range = GL_TRUE;
    ctx->Extensions.ARB_occlusion_query = GL_TRUE;
diff --git a/src/mesa/main/glformats.c b/src/mesa/main/glformats.c
index 7d4a3105700..77cf26337e1 100644
--- a/src/mesa/main/glformats.c
+++ b/src/mesa/main/glformats.c
@@ -1323,10 +1323,8 @@ _mesa_error_check_format_and_type(const struct gl_context *ctx,
             case GL_INT:
             case GL_UNSIGNED_INT:
             case GL_FLOAT:
-               return GL_NO_ERROR;
             case GL_HALF_FLOAT:
-               return ctx->Extensions.ARB_half_float_pixel
-                  ? GL_NO_ERROR : GL_INVALID_ENUM;
+               return GL_NO_ERROR;
             default:
                return GL_INVALID_ENUM;
          }
@@ -1349,10 +1347,8 @@ _mesa_error_check_format_and_type(const struct gl_context *ctx,
             case GL_INT:
             case GL_UNSIGNED_INT:
             case GL_FLOAT:
-               return GL_NO_ERROR;
             case GL_HALF_FLOAT:
-               return ctx->Extensions.ARB_half_float_pixel
-                  ? GL_NO_ERROR : GL_INVALID_ENUM;
+               return GL_NO_ERROR;
             default:
                return GL_INVALID_ENUM;
          }
@@ -1368,10 +1364,8 @@ _mesa_error_check_format_and_type(const struct gl_context *ctx,
             case GL_INT:
             case GL_UNSIGNED_INT:
             case GL_FLOAT:
-               return GL_NO_ERROR;
             case GL_HALF_FLOAT:
-               return ctx->Extensions.ARB_half_float_pixel
-                  ? GL_NO_ERROR : GL_INVALID_ENUM;
+               return GL_NO_ERROR;
             default:
                return GL_INVALID_ENUM;
          }
@@ -1389,14 +1383,12 @@ _mesa_error_check_format_and_type(const struct gl_context *ctx,
             case GL_UNSIGNED_BYTE_2_3_3_REV:
             case GL_UNSIGNED_SHORT_5_6_5:
             case GL_UNSIGNED_SHORT_5_6_5_REV:
+            case GL_HALF_FLOAT:
                return GL_NO_ERROR;
             case GL_UNSIGNED_INT_2_10_10_10_REV:
                /* OK by GL_EXT_texture_type_2_10_10_10_REV */
                return (ctx->API == API_OPENGLES2)
                   ? GL_NO_ERROR : GL_INVALID_ENUM;
-            case GL_HALF_FLOAT:
-               return ctx->Extensions.ARB_half_float_pixel
-                  ? GL_NO_ERROR : GL_INVALID_ENUM;
             case GL_UNSIGNED_INT_5_9_9_9_REV:
                return ctx->Extensions.EXT_texture_shared_exponent
                   ? GL_NO_ERROR : GL_INVALID_ENUM;
@@ -1419,10 +1411,8 @@ _mesa_error_check_format_and_type(const struct gl_context *ctx,
             case GL_INT:
             case GL_UNSIGNED_INT:
             case GL_FLOAT:
-               return GL_NO_ERROR;
             case GL_HALF_FLOAT:
-               return ctx->Extensions.ARB_half_float_pixel
-                  ? GL_NO_ERROR : GL_INVALID_ENUM;
+               return GL_NO_ERROR;
             default:
                return GL_INVALID_ENUM;
          }
@@ -1446,10 +1436,8 @@ _mesa_error_check_format_and_type(const struct gl_context *ctx,
             case GL_UNSIGNED_INT_8_8_8_8_REV:
             case GL_UNSIGNED_INT_10_10_10_2:
             case GL_UNSIGNED_INT_2_10_10_10_REV:
-               return GL_NO_ERROR;
             case GL_HALF_FLOAT:
-               return ctx->Extensions.ARB_half_float_pixel
-                  ? GL_NO_ERROR : GL_INVALID_ENUM;
+               return GL_NO_ERROR;
             default:
                return GL_INVALID_ENUM;
          }
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 205b2f2139e..34b9e6d373b 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -3451,7 +3451,6 @@ struct gl_extensions
    GLboolean ARB_explicit_attrib_location;
    GLboolean ARB_geometry_shader4;
    GLboolean ARB_gpu_shader5;
-   GLboolean ARB_half_float_pixel;
    GLboolean ARB_half_float_vertex;
    GLboolean ARB_instanced_arrays;
    GLboolean ARB_internalformat_query;
diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index 07ac1e1cfcd..5938f5046e0 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -397,11 +397,6 @@ _mesa_base_tex_format( struct gl_context *ctx, GLint internalFormat )
    if (ctx->Extensions.ARB_texture_rg) {
       switch (internalFormat) {
       case GL_R16F:
-	 /* R16F depends on both ARB_half_float_pixel and ARB_texture_float.
-	  */
-	 if (!ctx->Extensions.ARB_half_float_pixel)
-	    break;
-	 /* FALLTHROUGH */
       case GL_R32F:
 	 if (!ctx->Extensions.ARB_texture_float)
 	    break;
@@ -422,11 +417,6 @@ _mesa_base_tex_format( struct gl_context *ctx, GLint internalFormat )
          return GL_RED;
 
       case GL_RG16F:
-	 /* RG16F depends on both ARB_half_float_pixel and ARB_texture_float.
-	  */
-	 if (!ctx->Extensions.ARB_half_float_pixel)
-	    break;
-	 /* FALLTHROUGH */
       case GL_RG32F:
 	 if (!ctx->Extensions.ARB_texture_float)
 	    break;
@@ -4183,8 +4173,6 @@ _mesa_validate_texbuffer_format(const struct gl_context *ctx,
       return MESA_FORMAT_NONE;
 
    datatype = _mesa_get_format_datatype(format);
-   if (datatype == GL_FLOAT && !ctx->Extensions.ARB_texture_float)
-      return MESA_FORMAT_NONE;
 
    /* The GL_ARB_texture_buffer_object spec says:
     *
@@ -4195,9 +4183,8 @@ _mesa_validate_texbuffer_format(const struct gl_context *ctx,
     * As a result, GL_HALF_FLOAT internal format depends on both
     * GL_ARB_texture_float and GL_ARB_half_float_pixel.
     */
-   if (datatype == GL_HALF_FLOAT &&
-       !(ctx->Extensions.ARB_half_float_pixel
-         && ctx->Extensions.ARB_texture_float))
+   if ((datatype == GL_FLOAT || datatype == GL_HALF_FLOAT) &&
+       !ctx->Extensions.ARB_texture_float)
       return MESA_FORMAT_NONE;
 
    if (!ctx->Extensions.ARB_texture_rg) {
diff --git a/src/mesa/main/version.c b/src/mesa/main/version.c
index 9af5f091e04..1c0bedf4bb2 100644
--- a/src/mesa/main/version.c
+++ b/src/mesa/main/version.c
@@ -232,7 +232,6 @@ compute_version(struct gl_context *ctx)
                               (ctx->API == API_OPENGL_CORE ||
                                ctx->Extensions.ARB_color_buffer_float) &&
                               ctx->Extensions.ARB_depth_buffer_float &&
-                              ctx->Extensions.ARB_half_float_pixel &&
                               ctx->Extensions.ARB_half_float_vertex &&
                               ctx->Extensions.ARB_map_buffer_range &&
                               ctx->Extensions.ARB_shader_texture_lod &&