[PATCH] [xorg-dev][xserver] Full support of sRGB capable fbconfigs.

Tomasz Lis listom at gmail.com
Thu Nov 22 07:08:14 PST 2012


From: Tomasz Lis <tomasz.lis at intel.com>

Changes to correctly initialize the sRGB capability attribute and transfer it between XServer and the client.
Modifications include extension string, transferring visual config attribs and fbconfig attribs.
Also, attribute is initialized in the modules which do not really use it (xquartz and xwin).

Signed-off-by: Tomasz Lis <tomasz.lis at intel.com>
---
 glx/extension_string.c        |    1 +
 glx/extension_string.h        |    1 +
 glx/glxcmds.c                 |    7 +++++--
 glx/glxdri2.c                 |    7 +++++++
 glx/glxdricommon.c            |    4 +++-
 glx/glxscreens.c              |    2 ++
 glx/glxscreens.h              |    3 +++
 hw/xquartz/GL/visualConfigs.c |    3 +++
 hw/xwin/glx/indirect.c        |    2 ++
 9 files changed, 27 insertions(+), 3 deletions(-)

diff --git a/glx/extension_string.c b/glx/extension_string.c
index 544ca1f..47a9746 100644
--- a/glx/extension_string.c
+++ b/glx/extension_string.c
@@ -74,6 +74,7 @@ static const struct extension_info known_glx_extensions[] = {
     { GLX(ARB_multisample),             VER(1,4), Y, },
 
     { GLX(EXT_create_context_es2_profile), VER(0,0), N, },
+    { GLX(EXT_framebuffer_sRGB),        VER(1,1), N, },
     { GLX(EXT_import_context),          VER(0,0), Y, },
     { GLX(EXT_texture_from_pixmap),     VER(0,0), Y, },
     { GLX(EXT_visual_info),             VER(0,0), Y, },
diff --git a/glx/extension_string.h b/glx/extension_string.h
index 7a4a8b1..a91385f 100644
--- a/glx/extension_string.h
+++ b/glx/extension_string.h
@@ -41,6 +41,7 @@ enum {
     ARB_create_context_robustness_bit,
     ARB_multisample_bit,
     EXT_create_context_es2_profile_bit,
+    EXT_framebuffer_sRGB_bit,
     EXT_import_context_bit,
     EXT_texture_from_pixmap_bit,
     EXT_visual_info_bit,
diff --git a/glx/glxcmds.c b/glx/glxcmds.c
index c1f4e22..720a1a8 100644
--- a/glx/glxcmds.c
+++ b/glx/glxcmds.c
@@ -913,7 +913,7 @@ __glXDisp_CopyContext(__GLXclientState * cl, GLbyte * pc)
 
 enum {
     GLX_VIS_CONFIG_UNPAIRED = 18,
-    GLX_VIS_CONFIG_PAIRED = 20
+    GLX_VIS_CONFIG_PAIRED = 22
 };
 
 enum {
@@ -1005,6 +1005,8 @@ __glXDisp_GetVisualConfigs(__GLXclientState * cl, GLbyte * pc)
         buf[p++] = modes->samples;
         buf[p++] = GLX_SAMPLE_BUFFERS_SGIS;
         buf[p++] = modes->sampleBuffers;
+        buf[p++] = GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT;
+        buf[p++] = modes->sRGBCapable;
         buf[p++] = 0;           /* copy over visualSelectGroup (GLX_VISUAL_SELECT_GROUP_SGIX)? */
         buf[p++] = 0;
 
@@ -1017,7 +1019,7 @@ __glXDisp_GetVisualConfigs(__GLXclientState * cl, GLbyte * pc)
     return Success;
 }
 
-#define __GLX_TOTAL_FBCONFIG_ATTRIBS (36)
+#define __GLX_TOTAL_FBCONFIG_ATTRIBS (37)
 #define __GLX_FBCONFIG_ATTRIBS_LENGTH (__GLX_TOTAL_FBCONFIG_ATTRIBS * 2)
 /**
  * Send the set of GLXFBConfigs to the client.  There is not currently
@@ -1109,6 +1111,7 @@ DoGetFBConfigs(__GLXclientState * cl, unsigned screen)
         WRITE_PAIR(GLX_BIND_TO_MIPMAP_TEXTURE_EXT, modes->bindToMipmapTexture);
         WRITE_PAIR(GLX_BIND_TO_TEXTURE_TARGETS_EXT,
                    modes->bindToTextureTargets);
+        WRITE_PAIR(GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT, modes->sRGBCapable);
 
         if (client->swapped) {
             __GLX_SWAP_INT_ARRAY(buf, __GLX_FBCONFIG_ATTRIBS_LENGTH);
diff --git a/glx/glxdri2.c b/glx/glxdri2.c
index bce1bfa..ef7afb4 100644
--- a/glx/glxdri2.c
+++ b/glx/glxdri2.c
@@ -882,6 +882,13 @@ initializeExtensions(__GLXDRIscreen * screen)
                    "AIGLX: enabled GLX_SGI_swap_control and GLX_MESA_swap_control\n");
     }
 
+    /* enable EXT_framebuffer_sRGB extension (even if there are no sRGB capable fbconfigs) */
+    {
+        __glXEnableExtension(screen->glx_enable_bits,
+                 "GLX_EXT_framebuffer_sRGB");
+        LogMessage(X_INFO, "AIGLX: enabled GLX_EXT_framebuffer_sRGB\n");
+    }
+
     for (i = 0; extensions[i]; i++) {
 #ifdef __DRI_READ_DRAWABLE
         if (strcmp(extensions[i]->name, __DRI_READ_DRAWABLE) == 0) {
diff --git a/glx/glxdricommon.c b/glx/glxdricommon.c
index c90f380..b027f24 100644
--- a/glx/glxdricommon.c
+++ b/glx/glxdricommon.c
@@ -105,7 +105,9 @@ __ATTRIB(__DRI_ATTRIB_BUFFER_SIZE, rgbBits),
         __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGB, bindToTextureRgb),
         __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGBA, bindToTextureRgba),
         __ATTRIB(__DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE, bindToMipmapTexture),
-        __ATTRIB(__DRI_ATTRIB_YINVERTED, yInverted),};
+        __ATTRIB(__DRI_ATTRIB_YINVERTED, yInverted),
+        __ATTRIB(__DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE, sRGBCapable),
+        };
 
 static void
 setScalar(__GLXconfig * config, unsigned int attrib, unsigned int value)
diff --git a/glx/glxscreens.c b/glx/glxscreens.c
index 61d590c..e87256d 100644
--- a/glx/glxscreens.c
+++ b/glx/glxscreens.c
@@ -164,7 +164,9 @@ static char GLXServerVendorName[] = "SGI";
 unsigned glxMajorVersion = SERVER_GLX_MAJOR_VERSION;
 unsigned glxMinorVersion = SERVER_GLX_MINOR_VERSION;
 static char GLXServerExtensions[] =
+    "GLX_ARB_framebuffer_sRGB "
     "GLX_ARB_multisample "
+    "GLX_EXT_framebuffer_sRGB "
     "GLX_EXT_visual_info "
     "GLX_EXT_visual_rating "
     "GLX_EXT_import_context "
diff --git a/glx/glxscreens.h b/glx/glxscreens.h
index b29df58..0a7b604 100644
--- a/glx/glxscreens.h
+++ b/glx/glxscreens.h
@@ -102,6 +102,9 @@ struct __GLXconfig {
     GLint bindToMipmapTexture;
     GLint bindToTextureTargets;
     GLint yInverted;
+
+    /* ARB_framebuffer_sRGB */
+    GLint sRGBCapable;
 };
 
 GLint glxConvertToXVisualType(int visualType);
diff --git a/hw/xquartz/GL/visualConfigs.c b/hw/xquartz/GL/visualConfigs.c
index e37eefb..18518af 100644
--- a/hw/xquartz/GL/visualConfigs.c
+++ b/hw/xquartz/GL/visualConfigs.c
@@ -326,6 +326,9 @@ __glXAquaCreateVisualConfigs(int *numConfigsPtr, int screenNumber)
                                         c->bindToTextureTargets = 0;
                                         c->yInverted = 0;
 
+                                        /* EXT_framebuffer_sRGB */
+                                        c->sRGBCapable = GL_DONT_CARE;
+
                                         c = c->next;
                                     }
                                 }
diff --git a/hw/xwin/glx/indirect.c b/hw/xwin/glx/indirect.c
index c0069a2..5b339af 100644
--- a/hw/xwin/glx/indirect.c
+++ b/hw/xwin/glx/indirect.c
@@ -2017,6 +2017,7 @@ glxWinCreateConfigs(HDC hdc, glxWinScreen * screen)
         c->base.bindToMipmapTexture = -1;
         c->base.bindToTextureTargets = -1;
         c->base.yInverted = -1;
+        c->base.sRGBCapable = -1;
 
         n++;
 
@@ -2411,6 +2412,7 @@ glxWinCreateConfigsExt(HDC hdc, glxWinScreen * screen)
             GLX_TEXTURE_1D_BIT_EXT | GLX_TEXTURE_2D_BIT_EXT |
             GLX_TEXTURE_RECTANGLE_BIT_EXT;
         c->base.yInverted = -1;
+        c->base.sRGBCapable = -1;
 
         n++;
 
-- 
1.7.9.5



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