st/mesa: don't expose ARB_color_buffer_float without driver support in GL core

[android-x86/external-mesa.git] / src / mesa / state_tracker / st_extensions.c

diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index 18d8981..2d8b9ef 100644 (file)
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -421,6 +421,10 @@ 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 */
@@ -444,9 +448,6 @@ 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,
@@ -516,6 +517,7 @@ void st_init_extensions(struct st_context *st)
    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_internalformat_query = 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;
@@ -533,7 +535,6 @@ void st_init_extensions(struct st_context *st)
    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;
@@ -594,9 +595,11 @@ void st_init_extensions(struct st_context *st)
       ctx->Const.NativeIntegers = GL_TRUE;
       ctx->Const.MaxClipPlanes = 8;
 
-      /* Extensions that only depend on GLSL 1.3. */
+      /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
       ctx->Extensions.ARB_conservative_depth = GL_TRUE;
       ctx->Extensions.ARB_shader_bit_encoding = GL_TRUE;
+      ctx->Extensions.ARB_shading_language_packing = GL_TRUE;
+      ctx->Extensions.OES_depth_texture_cube_map = GL_TRUE;
    } else {
       /* Optional integer support for GLSL 1.2. */
       if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
@@ -626,6 +629,7 @@ void st_init_extensions(struct st_context *st)
       ctx->Const.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;
 
@@ -636,6 +640,16 @@ void st_init_extensions(struct st_context *st)
       if (!screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMPED)) {
          st->clamp_frag_color_in_shader = TRUE;
       }
+
+      /* For drivers which cannot do color clamping, it's better to just
+       * disable ARB_color_buffer_float in the core profile, because
+       * the clamping is deprecated there anyway. */
+      if (ctx->API == API_OPENGL_CORE &&
+          (st->clamp_frag_color_in_shader || st->clamp_vert_color_in_shader)) {
+         st->clamp_vert_color_in_shader = GL_FALSE;
+         st->clamp_frag_color_in_shader = GL_FALSE;
+         ctx->Extensions.ARB_color_buffer_float = GL_FALSE;
+      }
    }
 
    if (screen->fence_finish) {
@@ -651,6 +665,13 @@ void st_init_extensions(struct st_context *st)
          break;
       }
    }
+   if (ctx->Const.MaxSamples == 1) {
+      /* one sample doesn't really make sense */
+      ctx->Const.MaxSamples = 0;
+   }
+   else if (ctx->Const.MaxSamples >= 2) {
+      ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE;
+   }
 
    if (ctx->Const.MaxDualSourceDrawBuffers > 0)
       ctx->Extensions.ARB_blend_func_extended = GL_TRUE;
@@ -677,6 +698,13 @@ void st_init_extensions(struct st_context *st)
    }
    if (screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OBJECTS)) {
       ctx->Extensions.ARB_texture_buffer_object = GL_TRUE;
+
+      ctx->Const.TextureBufferOffsetAlignment =
+         screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
+
+      if (ctx->Const.TextureBufferOffsetAlignment)
+         ctx->Extensions.ARB_texture_buffer_range = GL_TRUE;
+
       init_format_extensions(st, tbo_rgb32, Elements(tbo_rgb32),
                              PIPE_BUFFER, PIPE_BIND_SAMPLER_VIEW);
    }