mesa/st: don't advertise NV_vdpau_interop if it doesn't work.
[mesa.git] / src / mesa / state_tracker / st_extensions.c
index f3f01ebd5e4e18edf34c702bab3604fce3f78b24..07bd1256743fe5a884cfd1b647eb64fec9aa5ac5 100644 (file)
@@ -1,6 +1,6 @@
 /**************************************************************************
  * 
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2007 VMware, Inc.
  * Copyright (c) 2008 VMware, Inc.
  * All Rights Reserved.
  * 
@@ -19,7 +19,7 @@
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "main/imports.h"
 #include "main/context.h"
 #include "main/macros.h"
-#include "main/mfeatures.h"
 #include "main/version.h"
 
 #include "pipe/p_context.h"
 #include "pipe/p_defines.h"
 #include "pipe/p_screen.h"
+#include "util/u_math.h"
 
 #include "st_context.h"
 #include "st_extensions.h"
+#include "st_format.h"
 
 
-static int _min(int a, int b)
+/*
+ * Note: we use these function rather than the MIN2, MAX2, CLAMP macros to
+ * avoid evaluating arguments (which are often function calls) more than once.
+ */
+
+static unsigned _min(unsigned a, unsigned b)
 {
    return (a < b) ? a : b;
 }
@@ -65,13 +71,11 @@ static int _clamp(int a, int min, int max)
  * Query driver to get implementation limits.
  * Note that we have to limit/clamp against Mesa's internal limits too.
  */
-void st_init_limits(struct st_context *st)
+void st_init_limits(struct pipe_screen *screen,
+                    struct gl_constants *c, struct gl_extensions *extensions)
 {
-   struct pipe_screen *screen = st->pipe->screen;
-   struct gl_constants *c = &st->ctx->Const;
-   gl_shader_type sh;
+   unsigned sh;
    boolean can_ubo = TRUE;
-   int max_const_buffers;
 
    c->MaxTextureLevels
       = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
@@ -91,25 +95,6 @@ void st_init_limits(struct st_context *st)
    c->MaxArrayTextureLayers
       = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
 
-   c->MaxTextureImageUnits
-      = _min(screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
-                                      PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
-            MAX_TEXTURE_IMAGE_UNITS);
-
-   c->MaxVertexTextureImageUnits
-      = _min(screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
-                                      PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
-             MAX_VERTEX_TEXTURE_IMAGE_UNITS);
-
-   c->MaxCombinedTextureImageUnits
-      = _min(screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SAMPLERS),
-             MAX_COMBINED_TEXTURE_IMAGE_UNITS);
-
-   c->MaxTextureCoordUnits
-      = _min(c->MaxTextureImageUnits, MAX_TEXTURE_COORD_UNITS);
-
-   c->MaxTextureUnits = _min(c->MaxTextureImageUnits, c->MaxTextureCoordUnits);
-
    /* Define max viewport size and max renderbuffer size in terms of
     * max texture size (note: max tex RECT size = max tex 2D size).
     * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
@@ -118,9 +103,9 @@ void st_init_limits(struct st_context *st)
    c->MaxViewportHeight =
    c->MaxRenderbufferSize = c->MaxTextureRectSize;
 
-   c->MaxDrawBuffers
-      _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
-              1, MAX_DRAW_BUFFERS);
+   c->MaxDrawBuffers = c->MaxColorAttachments =
+      _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
+             1, MAX_DRAW_BUFFERS);
 
    c->MaxDualSourceDrawBuffers
       = _clamp(screen->get_param(screen, PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS),
@@ -139,10 +124,7 @@ void st_init_limits(struct st_context *st)
    c->MaxPointSizeAA
       = _maxf(1.0f, screen->get_paramf(screen,
                                        PIPE_CAPF_MAX_POINT_WIDTH_AA));
-   /* called after _mesa_create_context/_mesa_init_point, fix default user
-    * settable max point size up
-    */
-   st->ctx->Point.MaxSize = MAX2(c->MaxPointSize, c->MaxPointSizeAA);
+
    /* these are not queryable. Note that GL basically mandates a 1.0 minimum
     * for non-aa sizes, but we can go down to 0.0 for aa points.
     */
@@ -156,44 +138,72 @@ void st_init_limits(struct st_context *st)
    c->MaxTextureLodBias
       = screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
 
-   c->MaxDrawBuffers
-      = CLAMP(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
-              1, MAX_DRAW_BUFFERS);
-
    c->QuadsFollowProvokingVertexConvention = screen->get_param(
       screen, PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
 
-   for (sh = 0; sh < MESA_SHADER_TYPES; ++sh) {
-      struct gl_shader_compiler_options *options =
-         &st->ctx->ShaderCompilerOptions[sh];
+   c->MaxUniformBlockSize =
+      screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
+                               PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE);
+   if (c->MaxUniformBlockSize < 16384) {
+      can_ubo = FALSE;
+   }
+
+   for (sh = 0; sh < PIPE_SHADER_TYPES; ++sh) {
+      struct gl_shader_compiler_options *options;
       struct gl_program_constants *pc;
 
       switch (sh) {
       case PIPE_SHADER_FRAGMENT:
-         pc = &c->FragmentProgram;
+         pc = &c->Program[MESA_SHADER_FRAGMENT];
+         options = &c->ShaderCompilerOptions[MESA_SHADER_FRAGMENT];
          break;
       case PIPE_SHADER_VERTEX:
-         pc = &c->VertexProgram;
+         pc = &c->Program[MESA_SHADER_VERTEX];
+         options = &c->ShaderCompilerOptions[MESA_SHADER_VERTEX];
          break;
       case PIPE_SHADER_GEOMETRY:
-         pc = &c->GeometryProgram;
+         pc = &c->Program[MESA_SHADER_GEOMETRY];
+         options = &c->ShaderCompilerOptions[MESA_SHADER_GEOMETRY];
          break;
       default:
-         assert(0);
+         /* compute shader, etc. */
          continue;
       }
 
-      pc->MaxNativeInstructions    = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
-      pc->MaxNativeAluInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
-      pc->MaxNativeTexInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
-      pc->MaxNativeTexIndirections = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
-      pc->MaxNativeAttribs         = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
-      pc->MaxNativeTemps           = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
-      pc->MaxNativeAddressRegs     = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ADDRS);
-      pc->MaxNativeParameters      = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONSTS);
-      pc->MaxUniformComponents     = 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS);
-      /* raise MaxParameters if native support is higher */
-      pc->MaxParameters            = MAX2(pc->MaxParameters, pc->MaxNativeParameters);
+      pc->MaxTextureImageUnits =
+         _min(screen->get_shader_param(screen, sh,
+                                       PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
+              MAX_TEXTURE_IMAGE_UNITS);
+
+      pc->MaxInstructions    = pc->MaxNativeInstructions    =
+         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
+      pc->MaxAluInstructions = pc->MaxNativeAluInstructions =
+         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
+      pc->MaxTexInstructions = pc->MaxNativeTexInstructions =
+         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
+      pc->MaxTexIndirections = pc->MaxNativeTexIndirections =
+         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
+      pc->MaxAttribs         = pc->MaxNativeAttribs         =
+         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
+      pc->MaxTemps           = pc->MaxNativeTemps           =
+         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
+      pc->MaxAddressRegs     = pc->MaxNativeAddressRegs     =
+         sh == PIPE_SHADER_VERTEX ? 1 : 0;
+      pc->MaxParameters      = pc->MaxNativeParameters      =
+         screen->get_shader_param(screen, sh,
+                   PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE) / sizeof(float[4]);
+
+      pc->MaxUniformComponents = 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS);
+
+      pc->MaxUniformBlocks =
+         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONST_BUFFERS);
+      if (pc->MaxUniformBlocks)
+         pc->MaxUniformBlocks -= 1; /* The first one is for ordinary uniforms. */
+      pc->MaxUniformBlocks = _min(pc->MaxUniformBlocks, MAX_UNIFORM_BUFFERS);
+
+      pc->MaxCombinedUniformComponents = (pc->MaxUniformComponents +
+                                          c->MaxUniformBlockSize / 4 *
+                                          pc->MaxUniformBlocks);
 
       /* Gallium doesn't really care about local vs. env parameters so use the
        * same limits.
@@ -220,15 +230,9 @@ void st_init_limits(struct st_context *st)
       options->EmitNoIndirectUniform = !screen->get_shader_param(screen, sh,
                                         PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);
 
-      if (pc->MaxNativeInstructions) {
-         if (options->EmitNoIndirectUniform)
+      if (pc->MaxNativeInstructions &&
+          (options->EmitNoIndirectUniform || pc->MaxUniformBlocks < 12)) {
          can_ubo = FALSE;
-
-         max_const_buffers = screen->get_shader_param(screen, sh,
-                                                      PIPE_SHADER_CAP_MAX_CONST_BUFFERS);
-         /* we need 13 buffers - 1 constant, 12 UBO */
-         if (max_const_buffers < 13)
-            can_ubo = FALSE;
       }
 
       if (options->EmitNoLoops)
@@ -238,16 +242,38 @@ void st_init_limits(struct st_context *st)
       options->LowerClipDistance = true;
    }
 
+   c->MaxCombinedTextureImageUnits =
+         _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
+              c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
+              c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
+              MAX_COMBINED_TEXTURE_IMAGE_UNITS);
+
+   /* This depends on program constants. */
+   c->MaxTextureCoordUnits
+      = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits, MAX_TEXTURE_COORD_UNITS);
+
+   c->MaxTextureUnits = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits, c->MaxTextureCoordUnits);
+
+   c->Program[MESA_SHADER_VERTEX].MaxAttribs = MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
+
    /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
     * of inputs. It's always 2 colors + N generic inputs. */
    c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
                                             PIPE_SHADER_CAP_MAX_INPUTS);
    c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
+   c->Program[MESA_SHADER_FRAGMENT].MaxInputComponents = c->MaxVarying * 4;
+   c->Program[MESA_SHADER_VERTEX].MaxOutputComponents = c->MaxVarying * 4;
+   c->Program[MESA_SHADER_GEOMETRY].MaxInputComponents = c->MaxVarying * 4;
+   c->Program[MESA_SHADER_GEOMETRY].MaxOutputComponents = c->MaxVarying * 4;
+   c->MaxGeometryOutputVertices = screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
+   c->MaxGeometryTotalOutputComponents = screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
 
    c->MinProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
    c->MaxProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
 
-   c->UniformBooleanTrue = ~0;
+   c->MaxProgramTextureGatherComponents = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS);
+   c->MinProgramTextureGatherOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET);
+   c->MaxProgramTextureGatherOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET);
 
    c->MaxTransformFeedbackBuffers =
       screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
@@ -256,28 +282,33 @@ void st_init_limits(struct st_context *st)
       screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
    c->MaxTransformFeedbackInterleavedComponents =
       screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
+   c->MaxVertexStreams =
+      MAX2(1, screen->get_param(screen, PIPE_CAP_MAX_VERTEX_STREAMS));
+
+   /* The vertex stream must fit into pipe_stream_output_info::stream */
+   assert(c->MaxVertexStreams <= 4);
+
+   c->MaxVertexAttribStride
+      = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);
 
    c->StripTextureBorder = GL_TRUE;
 
    c->GLSLSkipStrictMaxUniformLimitCheck =
       screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS);
 
-   c->GLSLSkipStrictMaxVaryingLimitCheck =
-      screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS);
-
-   if (can_ubo)
-      st->ctx->Extensions.ARB_uniform_buffer_object = GL_TRUE;
+   if (can_ubo) {
+      extensions->ARB_uniform_buffer_object = GL_TRUE;
+      c->UniformBufferOffsetAlignment =
+         screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
+      c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
+         c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
+         c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
+         c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks;
+      assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
+   }
 }
 
 
-static GLboolean st_get_s3tc_override(void)
-{
-   const char *override = _mesa_getenv("force_s3tc_enable");
-   if (override && !strcmp(override, "true"))
-      return GL_TRUE;
-   return GL_FALSE;
-}
-
 /**
  * Given a member \c x of struct gl_extensions, return offset of
  * \c x in bytes.
@@ -306,14 +337,15 @@ struct st_extension_format_mapping {
  *
  * target and bind_flags are passed to is_format_supported.
  */
-static void init_format_extensions(struct st_context *st,
-                           const struct st_extension_format_mapping *mapping,
-                           unsigned num_mappings,
-                           enum pipe_texture_target target,
-                           unsigned bind_flags)
+static void
+init_format_extensions(struct pipe_screen *screen,
+                       struct gl_extensions *extensions,
+                       const struct st_extension_format_mapping *mapping,
+                       unsigned num_mappings,
+                       enum pipe_texture_target target,
+                       unsigned bind_flags)
 {
-   struct pipe_screen *screen = st->pipe->screen;
-   GLboolean *extensions = (GLboolean *) &st->ctx->Extensions;
+   GLboolean *extension_table = (GLboolean *) extensions;
    unsigned i;
    int j;
    int num_formats = Elements(mapping->format);
@@ -337,10 +369,36 @@ static void init_format_extensions(struct st_context *st,
 
       /* Enable all extensions in the list. */
       for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
-         extensions[mapping[i].extension_offset[j]] = GL_TRUE;
+         extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
+   }
+}
+
+
+/**
+ * Given a list of formats and bind flags, return the maximum number
+ * of samples supported by any of those formats.
+ */
+static unsigned
+get_max_samples_for_formats(struct pipe_screen *screen,
+                            unsigned num_formats,
+                            enum pipe_format *formats,
+                            unsigned max_samples,
+                            unsigned bind)
+{
+   unsigned i, f;
+
+   for (i = max_samples; i > 0; --i) {
+      for (f = 0; f < num_formats; f++) {
+         if (screen->is_format_supported(screen, formats[f],
+                                         PIPE_TEXTURE_2D, i, bind)) {
+            return i;
+         }
+      }
    }
+   return 0;
 }
 
+
 /**
  * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
  * which GL extensions are supported.
@@ -348,15 +406,19 @@ static void init_format_extensions(struct st_context *st,
  * features or can be built on top of other gallium features.
  * Some fine tuning may still be needed.
  */
-void st_init_extensions(struct st_context *st)
+void st_init_extensions(struct pipe_screen *screen,
+                        gl_api api,
+                        struct gl_constants *consts,
+                        struct gl_extensions *extensions,
+                        struct st_config_options *options,
+                        boolean has_lib_dxtc)
 {
-   struct pipe_screen *screen = st->pipe->screen;
-   struct gl_context *ctx = st->ctx;
    int i, glsl_feature_level;
-   GLboolean *extensions = (GLboolean *) &ctx->Extensions;
+   GLboolean *extension_table = (GLboolean *) extensions;
 
    static const struct st_extension_cap_mapping cap_mapping[] = {
       { o(ARB_base_instance),                PIPE_CAP_START_INSTANCE                   },
+      { o(ARB_buffer_storage),               PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
       { o(ARB_depth_clamp),                  PIPE_CAP_DEPTH_CLIP_DISABLE               },
       { o(ARB_depth_texture),                PIPE_CAP_TEXTURE_SHADOW_MAP               },
       { o(ARB_draw_buffers_blend),           PIPE_CAP_INDEP_BLEND_FUNC                 },
@@ -370,19 +432,19 @@ void st_init_extensions(struct st_context *st)
       { o(ARB_shader_stencil_export),        PIPE_CAP_SHADER_STENCIL_EXPORT            },
       { o(ARB_shader_texture_lod),           PIPE_CAP_SM3                              },
       { o(ARB_shadow),                       PIPE_CAP_TEXTURE_SHADOW_MAP               },
+      { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP             },
       { o(ARB_texture_non_power_of_two),     PIPE_CAP_NPOT_TEXTURES                    },
+      { o(ARB_timer_query),                  PIPE_CAP_QUERY_TIMESTAMP                  },
       { o(ARB_transform_feedback2),          PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME       },
       { o(ARB_transform_feedback3),          PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME       },
 
       { o(EXT_blend_equation_separate),      PIPE_CAP_BLEND_EQUATION_SEPARATE          },
       { o(EXT_draw_buffers2),                PIPE_CAP_INDEP_BLEND_ENABLE               },
-      { o(EXT_shadow_funcs),                 PIPE_CAP_TEXTURE_SHADOW_MAP               },
       { o(EXT_stencil_two_side),             PIPE_CAP_TWO_SIDED_STENCIL                },
       { o(EXT_texture_array),                PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS         },
       { o(EXT_texture_filter_anisotropic),   PIPE_CAP_ANISOTROPIC_FILTER               },
       { o(EXT_texture_mirror_clamp),         PIPE_CAP_TEXTURE_MIRROR_CLAMP             },
       { o(EXT_texture_swizzle),              PIPE_CAP_TEXTURE_SWIZZLE                  },
-      { o(EXT_timer_query),                  PIPE_CAP_TIMER_QUERY                      },
       { o(EXT_transform_feedback),           PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS        },
 
       { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE    },
@@ -392,10 +454,15 @@ void st_init_extensions(struct st_context *st)
       { o(NV_texture_barrier),               PIPE_CAP_TEXTURE_BARRIER                  },
       /* GL_NV_point_sprite is not supported by gallium because we don't
        * support the GL_POINT_SPRITE_R_MODE_NV option. */
-      { o(MESA_texture_array),               PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS         },
 
       { o(OES_standard_derivatives),         PIPE_CAP_SM3                              },
-      { o(ARB_texture_cube_map_array),       PIPE_CAP_CUBE_MAP_ARRAY                   }
+      { o(ARB_texture_cube_map_array),       PIPE_CAP_CUBE_MAP_ARRAY                   },
+      { o(ARB_texture_multisample),          PIPE_CAP_TEXTURE_MULTISAMPLE              },
+      { o(ARB_texture_query_lod),            PIPE_CAP_TEXTURE_QUERY_LOD                },
+      { o(ARB_sample_shading),               PIPE_CAP_SAMPLE_SHADING                   },
+      { o(ARB_draw_indirect),                PIPE_CAP_DRAW_INDIRECT                    },
+      { o(ARB_derivative_control),           PIPE_CAP_TGSI_FS_FINE_DERIVATIVE          },
+      { o(ARB_conditional_render_inverted),  PIPE_CAP_CONDITIONAL_RENDER_INVERTED      },
    };
 
    /* Required: render target and sampler support */
@@ -405,7 +472,9 @@ void st_init_extensions(struct st_context *st)
           PIPE_FORMAT_R16G16B16A16_FLOAT } },
 
       { { o(ARB_texture_rgb10_a2ui) },
-        { PIPE_FORMAT_B10G10R10A2_UINT } },
+        { PIPE_FORMAT_R10G10B10A2_UINT,
+          PIPE_FORMAT_B10G10R10A2_UINT },
+         GL_TRUE }, /* at least one format must be supported */
 
       { { o(EXT_framebuffer_sRGB) },
         { PIPE_FORMAT_A8B8G8R8_SRGB,
@@ -418,6 +487,10 @@ void st_init_extensions(struct st_context *st)
       { { o(EXT_texture_integer) },
         { PIPE_FORMAT_R32G32B32A32_UINT,
           PIPE_FORMAT_R32G32B32A32_SINT } },
+
+      { { o(ARB_texture_rg) },
+        { PIPE_FORMAT_R8_UNORM,
+          PIPE_FORMAT_R8G8_UNORM } },
    };
 
    /* Required: depth stencil and sampler support */
@@ -425,12 +498,6 @@ void st_init_extensions(struct st_context *st)
       { { o(ARB_depth_buffer_float) },
         { PIPE_FORMAT_Z32_FLOAT,
           PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
-
-      { { o(ARB_framebuffer_object),
-          o(EXT_packed_depth_stencil) },
-        { PIPE_FORMAT_S8_UINT_Z24_UNORM,
-          PIPE_FORMAT_Z24_UNORM_S8_UINT },
-        GL_TRUE }, /* at least one format must be supported */
    };
 
    /* Required: sampler support */
@@ -441,9 +508,6 @@ void st_init_extensions(struct st_context *st)
           PIPE_FORMAT_RGTC2_UNORM,
           PIPE_FORMAT_RGTC2_SNORM } },
 
-      { { o(ARB_texture_rg) },
-        { PIPE_FORMAT_R8G8_UNORM } },
-
       { { o(EXT_texture_compression_latc) },
         { PIPE_FORMAT_LATC1_UNORM,
           PIPE_FORMAT_LATC1_SNORM,
@@ -451,12 +515,18 @@ void st_init_extensions(struct st_context *st)
           PIPE_FORMAT_LATC2_SNORM } },
 
       { { o(EXT_texture_compression_s3tc),
-          o(S3_s3tc) },
+          o(ANGLE_texture_compression_dxt) },
         { PIPE_FORMAT_DXT1_RGB,
           PIPE_FORMAT_DXT1_RGBA,
           PIPE_FORMAT_DXT3_RGBA,
           PIPE_FORMAT_DXT5_RGBA } },
 
+      { { o(ARB_texture_compression_bptc) },
+        { PIPE_FORMAT_BPTC_RGBA_UNORM,
+          PIPE_FORMAT_BPTC_SRGBA,
+          PIPE_FORMAT_BPTC_RGB_FLOAT,
+          PIPE_FORMAT_BPTC_RGB_UFLOAT } },
+
       { { o(EXT_texture_shared_exponent) },
         { PIPE_FORMAT_R9G9B9E5_FLOAT } },
 
@@ -478,7 +548,14 @@ void st_init_extensions(struct st_context *st)
         GL_TRUE }, /* at least one format must be supported */
 
       { { o(OES_compressed_ETC1_RGB8_texture) },
-        { PIPE_FORMAT_ETC1_RGB8 } },
+        { PIPE_FORMAT_ETC1_RGB8,
+          PIPE_FORMAT_R8G8B8A8_UNORM },
+        GL_TRUE }, /* at least one format must be supported */
+
+      { { o(ARB_stencil_texturing) },
+        { PIPE_FORMAT_X24S8_UINT,
+          PIPE_FORMAT_S8X24_UINT },
+        GL_TRUE }, /* at least one format must be supported */
    };
 
    /* Required: vertex fetch support. */
@@ -492,177 +569,265 @@ void st_init_extensions(struct st_context *st)
           PIPE_FORMAT_B10G10R10A2_USCALED,
           PIPE_FORMAT_R10G10B10A2_SSCALED,
           PIPE_FORMAT_B10G10R10A2_SSCALED } },
+      { { o(ARB_vertex_type_10f_11f_11f_rev) },
+        { PIPE_FORMAT_R11G11B10_FLOAT } },
+   };
+
+   static const struct st_extension_format_mapping tbo_rgb32[] = {
+      { {o(ARB_texture_buffer_object_rgb32) },
+        { PIPE_FORMAT_R32G32B32_FLOAT,
+          PIPE_FORMAT_R32G32B32_UINT,
+          PIPE_FORMAT_R32G32B32_SINT,
+        } },
    };
 
    /*
     * Extensions that are supported by all Gallium drivers:
     */
-   ctx->Extensions.ARB_ES2_compatibility = GL_TRUE;
-   ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE;
-   ctx->Extensions.ARB_explicit_attrib_location = GL_TRUE;
-   ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE;
-   ctx->Extensions.ARB_fragment_program = GL_TRUE;
-   ctx->Extensions.ARB_fragment_shader = 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_shader_objects = GL_TRUE;
-   ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
-   ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
-   ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
-   ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
-   ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
-   ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
-   ctx->Extensions.ARB_texture_storage = GL_TRUE;
-   ctx->Extensions.ARB_vertex_program = GL_TRUE;
-   ctx->Extensions.ARB_vertex_shader = GL_TRUE;
-
-   ctx->Extensions.EXT_blend_color = GL_TRUE;
-   ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
-   ctx->Extensions.EXT_blend_minmax = GL_TRUE;
-   ctx->Extensions.EXT_framebuffer_blit = GL_TRUE;
-   ctx->Extensions.EXT_framebuffer_object = GL_TRUE;
-   ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE;
-   ctx->Extensions.EXT_fog_coord = GL_TRUE;
-   ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE;
-   ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
-   ctx->Extensions.EXT_point_parameters = GL_TRUE;
-   ctx->Extensions.EXT_provoking_vertex = GL_TRUE;
-   ctx->Extensions.EXT_secondary_color = GL_TRUE;
-   ctx->Extensions.EXT_separate_shader_objects = GL_TRUE;
-   ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
-   ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE;
-
-   ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE;
-
-   ctx->Extensions.MESA_pack_invert = GL_TRUE;
-
-   ctx->Extensions.NV_blend_square = GL_TRUE;
-   ctx->Extensions.NV_fog_distance = GL_TRUE;
-   ctx->Extensions.NV_texture_env_combine4 = GL_TRUE;
-   ctx->Extensions.NV_texture_rectangle = GL_TRUE;
-
-   ctx->Extensions.OES_EGL_image = GL_TRUE;
-   if (ctx->API != API_OPENGL_COMPAT)
-      ctx->Extensions.OES_EGL_image_external = GL_TRUE;
-   ctx->Extensions.OES_draw_texture = GL_TRUE;
+   extensions->ARB_ES2_compatibility = GL_TRUE;
+   extensions->ARB_draw_elements_base_vertex = GL_TRUE;
+   extensions->ARB_explicit_attrib_location = GL_TRUE;
+   extensions->ARB_explicit_uniform_location = GL_TRUE;
+   extensions->ARB_fragment_coord_conventions = GL_TRUE;
+   extensions->ARB_fragment_program = GL_TRUE;
+   extensions->ARB_fragment_shader = GL_TRUE;
+   extensions->ARB_half_float_vertex = GL_TRUE;
+   extensions->ARB_internalformat_query = GL_TRUE;
+   extensions->ARB_map_buffer_range = GL_TRUE;
+   extensions->ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
+   extensions->ARB_texture_cube_map = GL_TRUE;
+   extensions->ARB_texture_env_combine = GL_TRUE;
+   extensions->ARB_texture_env_crossbar = GL_TRUE;
+   extensions->ARB_texture_env_dot3 = GL_TRUE;
+   extensions->ARB_vertex_program = GL_TRUE;
+   extensions->ARB_vertex_shader = GL_TRUE;
+
+   extensions->EXT_blend_color = GL_TRUE;
+   extensions->EXT_blend_func_separate = GL_TRUE;
+   extensions->EXT_blend_minmax = GL_TRUE;
+   extensions->EXT_gpu_program_parameters = GL_TRUE;
+   extensions->EXT_pixel_buffer_object = GL_TRUE;
+   extensions->EXT_point_parameters = GL_TRUE;
+   extensions->EXT_provoking_vertex = GL_TRUE;
+
+   extensions->EXT_texture_env_dot3 = GL_TRUE;
+   extensions->EXT_vertex_array_bgra = GL_TRUE;
+
+   extensions->ATI_texture_env_combine3 = GL_TRUE;
+
+   extensions->MESA_pack_invert = GL_TRUE;
+
+   extensions->NV_fog_distance = GL_TRUE;
+   extensions->NV_texture_env_combine4 = GL_TRUE;
+   extensions->NV_texture_rectangle = GL_TRUE;
+
+   extensions->OES_EGL_image = GL_TRUE;
+   extensions->OES_EGL_image_external = GL_TRUE;
+   extensions->OES_draw_texture = GL_TRUE;
 
    /* Expose the extensions which directly correspond to gallium caps. */
    for (i = 0; i < Elements(cap_mapping); i++) {
       if (screen->get_param(screen, cap_mapping[i].cap)) {
-         extensions[cap_mapping[i].extension_offset] = GL_TRUE;
+         extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
       }
    }
 
    /* Expose the extensions which directly correspond to gallium formats. */
-   init_format_extensions(st, rendertarget_mapping,
+   init_format_extensions(screen, extensions, rendertarget_mapping,
                           Elements(rendertarget_mapping), PIPE_TEXTURE_2D,
                           PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
-   init_format_extensions(st, depthstencil_mapping,
+   init_format_extensions(screen, extensions, depthstencil_mapping,
                           Elements(depthstencil_mapping), PIPE_TEXTURE_2D,
                           PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
-   init_format_extensions(st, texture_mapping, Elements(texture_mapping),
-                          PIPE_TEXTURE_2D, PIPE_BIND_SAMPLER_VIEW);
-   init_format_extensions(st, vertex_mapping, Elements(vertex_mapping),
-                          PIPE_BUFFER, PIPE_BIND_VERTEX_BUFFER);
+   init_format_extensions(screen, extensions, texture_mapping,
+                          Elements(texture_mapping), PIPE_TEXTURE_2D,
+                          PIPE_BIND_SAMPLER_VIEW);
+   init_format_extensions(screen, extensions, vertex_mapping,
+                          Elements(vertex_mapping), PIPE_BUFFER,
+                          PIPE_BIND_VERTEX_BUFFER);
 
    /* Figure out GLSL support. */
    glsl_feature_level = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
 
-   if (glsl_feature_level >= 140) {
-      ctx->Const.GLSLVersion = 140;
-   } else if (glsl_feature_level >= 130) {
-      ctx->Const.GLSLVersion = 130;
-   } else {
-      ctx->Const.GLSLVersion = 120;
+   consts->GLSLVersion = glsl_feature_level;
+   if (glsl_feature_level >= 330)
+      consts->GLSLVersion = 330;
+
+   _mesa_override_glsl_version(consts);
+
+   if (options->force_glsl_version > 0 &&
+       options->force_glsl_version <= consts->GLSLVersion) {
+      consts->ForceGLSLVersion = options->force_glsl_version;
+   }
+
+   if (glsl_feature_level >= 400)
+      extensions->ARB_gpu_shader5 = GL_TRUE;
+
+   /* This extension needs full OpenGL 3.2, but we don't know if that's
+    * supported at this point. Only check the GLSL version. */
+   if (consts->GLSLVersion >= 150 &&
+       screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
+      extensions->AMD_vertex_shader_layer = GL_TRUE;
    }
 
-   _mesa_override_glsl_version(st->ctx);
+   if (consts->GLSLVersion >= 130) {
+      consts->NativeIntegers = GL_TRUE;
+      consts->MaxClipPlanes = 8;
+
+      /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
+      extensions->ARB_conservative_depth = GL_TRUE;
+      extensions->ARB_shading_language_packing = GL_TRUE;
+      extensions->OES_depth_texture_cube_map = GL_TRUE;
+      extensions->ARB_shading_language_420pack = GL_TRUE;
+      extensions->ARB_texture_query_levels = GL_TRUE;
 
-   if (ctx->Const.GLSLVersion >= 130) {
-      ctx->Const.NativeIntegers = GL_TRUE;
-      ctx->Const.MaxClipPlanes = 8;
+      if (!options->disable_shader_bit_encoding) {
+         extensions->ARB_shader_bit_encoding = GL_TRUE;
+      }
 
-      /* Extensions that only depend on GLSL 1.3. */
-      ctx->Extensions.ARB_conservative_depth = GL_TRUE;
-      ctx->Extensions.ARB_shader_bit_encoding = GL_TRUE;
+      extensions->EXT_shader_integer_mix = GL_TRUE;
    } else {
       /* Optional integer support for GLSL 1.2. */
       if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
                                    PIPE_SHADER_CAP_INTEGERS) &&
           screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
                                    PIPE_SHADER_CAP_INTEGERS)) {
-         ctx->Const.NativeIntegers = GL_TRUE;
+         consts->NativeIntegers = GL_TRUE;
+
+         extensions->EXT_shader_integer_mix = GL_TRUE;
       }
    }
 
+   consts->UniformBooleanTrue = consts->NativeIntegers ? ~0 : fui(1.0f);
+
    /* Below are the cases which cannot be moved into tables easily. */
 
-   if (!ctx->Mesa_DXTn && !st_get_s3tc_override()) {
-      ctx->Extensions.EXT_texture_compression_s3tc = GL_FALSE;
-      ctx->Extensions.S3_s3tc = GL_FALSE;
+   if (!has_lib_dxtc && !options->force_s3tc_enable) {
+      extensions->EXT_texture_compression_s3tc = GL_FALSE;
+      extensions->ANGLE_texture_compression_dxt = GL_FALSE;
    }
 
    if (screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY,
                                 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
 #if 0 /* XXX re-enable when GLSL compiler again supports geometry shaders */
-      ctx->Extensions.ARB_geometry_shader4 = GL_TRUE;
+      extensions->ARB_geometry_shader4 = GL_TRUE;
 #endif
    }
 
-   ctx->Extensions.NV_primitive_restart = GL_TRUE;
+   extensions->NV_primitive_restart = GL_TRUE;
    if (!screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART)) {
-      ctx->Const.PrimitiveRestartInSoftware = GL_TRUE;
+      consts->PrimitiveRestartInSoftware = GL_TRUE;
    }
 
+   /* ARB_color_buffer_float. */
    if (screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_UNCLAMPED)) {
-      ctx->Extensions.ARB_color_buffer_float = GL_TRUE;
-
-      if (!screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_CLAMPED)) {
-         st->clamp_vert_color_in_shader = TRUE;
-      }
-
-      if (!screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMPED)) {
-         st->clamp_frag_color_in_shader = TRUE;
-      }
+      extensions->ARB_color_buffer_float = GL_TRUE;
    }
 
    if (screen->fence_finish) {
-      ctx->Extensions.ARB_sync = GL_TRUE;
+      extensions->ARB_sync = GL_TRUE;
    }
 
    /* Maximum sample count. */
-   for (i = 16; i > 0; --i) {
-      if (screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_UNORM,
-                                      PIPE_TEXTURE_2D, i,
-                                      PIPE_BIND_RENDER_TARGET)) {
-         ctx->Const.MaxSamples = i;
-         break;
-      }
+   {
+      enum pipe_format color_formats[] = {
+         PIPE_FORMAT_R8G8B8A8_UNORM,
+         PIPE_FORMAT_B8G8R8A8_UNORM,
+         PIPE_FORMAT_A8R8G8B8_UNORM,
+         PIPE_FORMAT_A8B8G8R8_UNORM,
+      };
+      enum pipe_format depth_formats[] = {
+         PIPE_FORMAT_Z16_UNORM,
+         PIPE_FORMAT_Z24X8_UNORM,
+         PIPE_FORMAT_X8Z24_UNORM,
+         PIPE_FORMAT_Z32_UNORM,
+         PIPE_FORMAT_Z32_FLOAT
+      };
+      enum pipe_format int_formats[] = {
+         PIPE_FORMAT_R8G8B8A8_SINT
+      };
+
+      consts->MaxSamples =
+         get_max_samples_for_formats(screen, Elements(color_formats),
+                                     color_formats, 16,
+                                     PIPE_BIND_RENDER_TARGET);
+
+      consts->MaxColorTextureSamples =
+         get_max_samples_for_formats(screen, Elements(color_formats),
+                                     color_formats, consts->MaxSamples,
+                                     PIPE_BIND_SAMPLER_VIEW);
+
+      consts->MaxDepthTextureSamples =
+         get_max_samples_for_formats(screen, Elements(depth_formats),
+                                     depth_formats, consts->MaxSamples,
+                                     PIPE_BIND_SAMPLER_VIEW);
+
+      consts->MaxIntegerSamples =
+         get_max_samples_for_formats(screen, Elements(int_formats),
+                                     int_formats, consts->MaxSamples,
+                                     PIPE_BIND_SAMPLER_VIEW);
+   }
+   if (consts->MaxSamples == 1) {
+      /* one sample doesn't really make sense */
+      consts->MaxSamples = 0;
+   }
+   else if (consts->MaxSamples >= 2) {
+      extensions->EXT_framebuffer_multisample = GL_TRUE;
+      extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
    }
 
-   if (ctx->Const.MaxDualSourceDrawBuffers > 0)
-      ctx->Extensions.ARB_blend_func_extended = GL_TRUE;
+   if (consts->MaxSamples == 0 && screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
+       consts->FakeSWMSAA = GL_TRUE;
+        extensions->EXT_framebuffer_multisample = GL_TRUE;
+        extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
+        extensions->ARB_texture_multisample = GL_TRUE;
+   }
+
+   if (consts->MaxDualSourceDrawBuffers > 0 &&
+       !options->disable_blend_func_extended)
+      extensions->ARB_blend_func_extended = GL_TRUE;
 
-   if (screen->get_param(screen, PIPE_CAP_TIMER_QUERY) &&
-       screen->get_param(screen, PIPE_CAP_QUERY_TIMESTAMP)) {
-      ctx->Extensions.ARB_timer_query = GL_TRUE;
+   if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
+       extensions->ARB_timer_query) {
+      extensions->EXT_timer_query = GL_TRUE;
    }
 
-   if (ctx->Extensions.ARB_transform_feedback2 &&
-       ctx->Extensions.ARB_draw_instanced) {
-      ctx->Extensions.ARB_transform_feedback_instanced = GL_TRUE;
+   if (extensions->ARB_transform_feedback2 &&
+       extensions->ARB_draw_instanced) {
+      extensions->ARB_transform_feedback_instanced = GL_TRUE;
    }
-   if (st->options.force_glsl_extensions_warn)
-          ctx->Const.ForceGLSLExtensionsWarn = 1;
+   if (options->force_glsl_extensions_warn)
+      consts->ForceGLSLExtensionsWarn = 1;
+
+   if (options->disable_glsl_line_continuations)
+      consts->DisableGLSLLineContinuations = 1;
 
-   ctx->Const.MinMapBufferAlignment =
+   if (options->allow_glsl_extension_directive_midshader)
+      consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
+
+   consts->MinMapBufferAlignment =
       screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
-   if (ctx->Const.MinMapBufferAlignment >= 64) {
-      ctx->Extensions.ARB_map_buffer_alignment = GL_TRUE;
+
+   if (screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OBJECTS)) {
+      extensions->ARB_texture_buffer_object = GL_TRUE;
+
+      consts->MaxTextureBufferSize =
+         _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
+              (1u << 31) - 1);
+      consts->TextureBufferOffsetAlignment =
+         screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
+
+      if (consts->TextureBufferOffsetAlignment)
+         extensions->ARB_texture_buffer_range = GL_TRUE;
+
+      init_format_extensions(screen, extensions, tbo_rgb32,
+                             Elements(tbo_rgb32), PIPE_BUFFER,
+                             PIPE_BIND_SAMPLER_VIEW);
+   }
+
+   if (screen->get_param(screen, PIPE_CAP_MIXED_FRAMEBUFFER_SIZES)) {
+      extensions->ARB_framebuffer_object = GL_TRUE;
    }
-   if (screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OBJECTS))
-      ctx->Extensions.ARB_texture_buffer_object = GL_TRUE;
 
    /* Unpacking a varying in the fragment shader costs 1 texture indirection.
     * If the number of available texture indirections is very limited, then we
@@ -674,7 +839,56 @@ void st_init_extensions(struct st_context *st)
       /* We can't disable varying packing if transform feedback is available,
        * because transform feedback code assumes a packed varying layout.
        */
-      if (!ctx->Extensions.EXT_transform_feedback)
-         ctx->Const.DisableVaryingPacking = GL_TRUE;
+      if (!extensions->EXT_transform_feedback)
+         consts->DisableVaryingPacking = GL_TRUE;
+   }
+
+   if (api == API_OPENGL_CORE) {
+      consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
+      if (consts->MaxViewports >= 16) {
+         consts->ViewportBounds.Min = -16384.0;
+         consts->ViewportBounds.Max = 16384.0;
+         extensions->ARB_viewport_array = GL_TRUE;
+         extensions->ARB_fragment_layer_viewport = GL_TRUE;
+         if (extensions->AMD_vertex_shader_layer)
+            extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
+      }
+   }
+   if (consts->MaxProgramTextureGatherComponents > 0)
+      extensions->ARB_texture_gather = GL_TRUE;
+
+   /* GL_ARB_ES3_compatibility.
+    *
+    * Assume that ES3 is supported if GLSL 3.30 is supported.
+    * (OpenGL 3.3 is a requirement for that extension.)
+    */
+   if (consts->GLSLVersion >= 330 &&
+       /* Requirements for ETC2 emulation. */
+       screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
+                                   PIPE_TEXTURE_2D, 0,
+                                   PIPE_BIND_SAMPLER_VIEW) &&
+       screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
+                                   PIPE_TEXTURE_2D, 0,
+                                   PIPE_BIND_SAMPLER_VIEW) &&
+       screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
+                                   PIPE_TEXTURE_2D, 0,
+                                   PIPE_BIND_SAMPLER_VIEW) &&
+       screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
+                                   PIPE_TEXTURE_2D, 0,
+                                   PIPE_BIND_SAMPLER_VIEW) &&
+       screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
+                                   PIPE_TEXTURE_2D, 0,
+                                   PIPE_BIND_SAMPLER_VIEW) &&
+       screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
+                                   PIPE_TEXTURE_2D, 0,
+                                   PIPE_BIND_SAMPLER_VIEW)) {
+      extensions->ARB_ES3_compatibility = GL_TRUE;
+   }
+
+   if (screen->get_video_param &&
+       screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
+                               PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
+                               PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
+      extensions->NV_vdpau_interop = GL_TRUE;
    }
 }