dri: add a way to request that modes have matching color/zs depths

Some GPUs, notably nv3x/nv4x can't render to mismatched color/zs
framebuffer depths. Fallbacks can be done by the driver, with shadow
surfaces, but no reason to encourage applications to select non-matching
glx visuals.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

diff --git a/src/gallium/state_trackers/dri/dri_screen.c b/src/gallium/state_trackers/dri/dri_screen.c
index b16585a..5f4fb8a 100644 (file)
--- a/src/gallium/state_trackers/dri/dri_screen.c
+++ b/src/gallium/state_trackers/dri/dri_screen.c
@@ -214,7 +214,7 @@ dri_fill_in_modes(struct dri_screen *screen)
                                         depth_buffer_factor, back_buffer_modes,
                                         ARRAY_SIZE(back_buffer_modes),
                                         msaa_modes, 1,
-                                        GL_TRUE);
+                                        GL_TRUE, GL_FALSE);
          configs = driConcatConfigs(configs, new_configs);
 
          /* Multi-sample configs without an accumulation buffer. */
@@ -224,7 +224,7 @@ dri_fill_in_modes(struct dri_screen *screen)
                                            depth_buffer_factor, back_buffer_modes,
                                            ARRAY_SIZE(back_buffer_modes),
                                            msaa_modes+1, num_msaa_modes-1,
-                                           GL_FALSE);
+                                           GL_FALSE, GL_FALSE);
             configs = driConcatConfigs(configs, new_configs);
          }
       }

diff --git a/src/mesa/drivers/dri/common/utils.c b/src/mesa/drivers/dri/common/utils.c
index 4b2e89c..c37d446 100644 (file)
--- a/src/mesa/drivers/dri/common/utils.c
+++ b/src/mesa/drivers/dri/common/utils.c
@@ -143,8 +143,10 @@ driGetRendererString( char * buffer, const char * hardware_name,
  * \param msaa_samples  Array of msaa sample count. 0 represents a visual
  *                      without a multisample buffer.
  * \param num_msaa_modes Number of entries in \c msaa_samples.
- * \param visType       GLX visual type.  Usually either \c GLX_TRUE_COLOR or
- *                      \c GLX_DIRECT_COLOR.
+ * \param enable_accum  Add an accum buffer to the configs
+ * \param color_depth_match Whether the color depth must match the zs depth
+ *                          This forces 32-bit color to have 24-bit depth, and
+ *                          16-bit color to have 16-bit depth.
  * 
  * \returns
  * Pointer to any array of pointers to the \c __DRIconfig structures created
@@ -158,7 +160,7 @@ driCreateConfigs(mesa_format format,
                 unsigned num_depth_stencil_bits,
                 const GLenum * db_modes, unsigned num_db_modes,
                 const uint8_t * msaa_samples, unsigned num_msaa_modes,
-                GLboolean enable_accum)
+                GLboolean enable_accum, GLboolean color_depth_match)
 {
    static const uint32_t masks_table[][4] = {
       /* MESA_FORMAT_B5G6R5_UNORM */
@@ -236,6 +238,19 @@ driCreateConfigs(mesa_format format,
        for ( i = 0 ; i < num_db_modes ; i++ ) {
            for ( h = 0 ; h < num_msaa_modes; h++ ) {
                for ( j = 0 ; j < num_accum_bits ; j++ ) {
+                   if (color_depth_match &&
+                       (depth_bits[k] || stencil_bits[k])) {
+                       /* Depth can really only be 0, 16, 24, or 32. A 32-bit
+                        * color format still matches 24-bit depth, as there
+                        * is an implicit 8-bit stencil. So really we just
+                        * need to make sure that color/depth are both 16 or
+                        * both non-16.
+                        */
+                       if ((depth_bits[k] + stencil_bits[k] == 16) !=
+                           (red_bits + green_bits + blue_bits + alpha_bits == 16))
+                           continue;
+                   }
+
                    *c = malloc (sizeof **c);
                    modes = &(*c)->modes;
                    c++;

diff --git a/src/mesa/drivers/dri/common/utils.h b/src/mesa/drivers/dri/common/utils.h
index f6b8d7c..7be0465 100644 (file)
--- a/src/mesa/drivers/dri/common/utils.h
+++ b/src/mesa/drivers/dri/common/utils.h
@@ -45,7 +45,7 @@ driCreateConfigs(mesa_format format,
                 unsigned num_depth_stencil_bits,
                 const GLenum * db_modes, unsigned num_db_modes,
                 const uint8_t * msaa_samples, unsigned num_msaa_modes,
-                GLboolean enable_accum);
+                GLboolean enable_accum, GLboolean color_depth_match);
 
 __DRIconfig **driConcatConfigs(__DRIconfig **a,
                               __DRIconfig **b);

diff --git a/src/mesa/drivers/dri/i915/intel_screen.c b/src/mesa/drivers/dri/i915/intel_screen.c
index 77af328..77f03fa 100644 (file)
--- a/src/mesa/drivers/dri/i915/intel_screen.c
+++ b/src/mesa/drivers/dri/i915/intel_screen.c
@@ -1081,7 +1081,7 @@ intel_screen_make_configs(__DRIscreen *dri_screen)
                                      num_depth_stencil_bits,
                                      back_buffer_modes, 2,
                                      singlesample_samples, 1,
-                                     false);
+                                     false, false);
       configs = driConcatConfigs(configs, new_configs);
    }
 
@@ -1103,7 +1103,7 @@ intel_screen_make_configs(__DRIscreen *dri_screen)
                                      depth_bits, stencil_bits, 1,
                                      back_buffer_modes, 1,
                                      singlesample_samples, 1,
-                                     true);
+                                     true, false);
       configs = driConcatConfigs(configs, new_configs);
    }
 

diff --git a/src/mesa/drivers/dri/i965/intel_screen.c b/src/mesa/drivers/dri/i965/intel_screen.c
index ae51c40..9df888d 100644 (file)
--- a/src/mesa/drivers/dri/i965/intel_screen.c
+++ b/src/mesa/drivers/dri/i965/intel_screen.c
@@ -1328,7 +1328,7 @@ intel_screen_make_configs(__DRIscreen *dri_screen)
                                      num_depth_stencil_bits,
                                      back_buffer_modes, 2,
                                      singlesample_samples, 1,
-                                     false);
+                                     false, false);
       configs = driConcatConfigs(configs, new_configs);
    }
 
@@ -1350,7 +1350,7 @@ intel_screen_make_configs(__DRIscreen *dri_screen)
                                      depth_bits, stencil_bits, 1,
                                      back_buffer_modes, 1,
                                      singlesample_samples, 1,
-                                     true);
+                                     true, false);
       configs = driConcatConfigs(configs, new_configs);
    }
 
@@ -1398,7 +1398,7 @@ intel_screen_make_configs(__DRIscreen *dri_screen)
                                      back_buffer_modes, 1,
                                      multisample_samples,
                                      num_msaa_modes,
-                                     false);
+                                     false, false);
       configs = driConcatConfigs(configs, new_configs);
    }
 

diff --git a/src/mesa/drivers/dri/nouveau/nouveau_screen.c b/src/mesa/drivers/dri/nouveau/nouveau_screen.c
index 6f61f66..0545e68 100644 (file)
--- a/src/mesa/drivers/dri/nouveau/nouveau_screen.c
+++ b/src/mesa/drivers/dri/nouveau/nouveau_screen.c
@@ -78,7 +78,7 @@ nouveau_get_configs(void)
                                          ARRAY_SIZE(back_buffer_modes),
                                          msaa_samples,
                                          ARRAY_SIZE(msaa_samples),
-                                         GL_TRUE);
+                                         GL_TRUE, GL_FALSE);
                assert(config);
 
                configs = driConcatConfigs(configs, config);

diff --git a/src/mesa/drivers/dri/radeon/radeon_screen.c b/src/mesa/drivers/dri/radeon/radeon_screen.c
index 98b4741..9a07535 100644 (file)
--- a/src/mesa/drivers/dri/radeon/radeon_screen.c
+++ b/src/mesa/drivers/dri/radeon/radeon_screen.c
@@ -813,7 +813,7 @@ __DRIconfig **radeonInitScreen2(__DRIscreen *psp)
                                     ARRAY_SIZE(back_buffer_modes),
                                     msaa_samples_array,
                                     ARRAY_SIZE(msaa_samples_array),
-                                    GL_TRUE);
+                                    GL_TRUE, GL_FALSE);
       configs = driConcatConfigs(configs, new_configs);
    }
 

diff --git a/src/mesa/drivers/dri/swrast/swrast.c b/src/mesa/drivers/dri/swrast/swrast.c
index 2d4bb70..6d3b00b 100644 (file)
--- a/src/mesa/drivers/dri/swrast/swrast.c
+++ b/src/mesa/drivers/dri/swrast/swrast.c
@@ -273,7 +273,7 @@ swrastFillInModes(__DRIscreen *psp,
                               depth_bits_array, stencil_bits_array,
                               depth_buffer_factor, back_buffer_modes,
                               back_buffer_factor, msaa_samples_array, 1,
-                              GL_TRUE);
+                              GL_TRUE, GL_FALSE);
     if (configs == NULL) {
        fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
                __LINE__);