[Mesa-dev] [PATCH 42/65] mesa/formatquery: Added SRGB_{READ, WRITE} <pname> queries

[Eduardo Lima Mitev]

From: Antia Puentes <apuentes at igalia.com>

>From the ARB_internalformat_query2 specification:

   "- SRGB_READ: The support for converting from sRGB colorspace on read
      operations (see section 3.9.18) from the resource is returned in
      <params>.
      Possible values returned are FULL_SUPPORT, CAVEAT_SUPPORT, or NONE.
      If the resource or operation is not supported, NONE is returned.

    - SRGB_WRITE: The support for converting to sRGB colorspace on write
      operations to the resource is returned in <params>.
      This indicates that writing to framebuffers with this internalformat
      will encode to sRGB color spaces when FRAMEBUFFER_SRGB is enabled (see
      section 4.1.8).
      Possible values returned are FULL_SUPPORT, CAVEAT_SUPPORT, or NONE.
      If the resource or operation is not supported, NONE is returned."
---
 src/mesa/main/formatquery.c | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/mesa/main/formatquery.c b/src/mesa/main/formatquery.c
index ff10523..467b436 100644
--- a/src/mesa/main/formatquery.c
+++ b/src/mesa/main/formatquery.c
@@ -593,6 +593,8 @@ _mesa_query_internal_format_default(struct gl_context *ctx, GLenum target,
 
    case GL_MANUAL_GENERATE_MIPMAP:
    case GL_AUTO_GENERATE_MIPMAP:
+   case GL_SRGB_READ:
+   case GL_SRGB_WRITE:
       params[0] = GL_FULL_SUPPORT;
       break;
 
@@ -1088,11 +1090,23 @@ _mesa_GetInternalformativ(GLenum target, GLenum internalformat, GLenum pname,
       break;
 
    case GL_SRGB_READ:
-      /* @TODO */
+      if (!_mesa_has_EXT_texture_sRGB(ctx) ||
+          !_mesa_is_srgb_format(internalformat)) {
+         goto end;
+      }
+
+      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
+                                      buffer);
       break;
 
    case GL_SRGB_WRITE:
-      /* @TODO */
+      if (!_mesa_has_EXT_framebuffer_sRGB(ctx) ||
+          !_mesa_is_color_format(internalformat)) {
+         goto end;
+      }
+
+      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
+                                      buffer);
       break;
 
    case GL_SRGB_DECODE_ARB:
-- 
2.5.3