commit 81e7bf8d6d338d944f3c5075b14c21580398aeb6
author Greg Daniel <egdaniel@google.com> Wed Jul 19 14:47:42 2017 -0400
committer Skia Commit-Bot <skia-commit-bot@chromium.org> Wed Jul 19 19:13:25 2017 +0000
tree 7c9814e6637dbcdf477f35084381b28f1f98e06a
parent fc3afa921bc42a357120e1e7856b3c256bfe1a6a

Update gpu caps for valid sample counts.

Instead of query and maxSampleCount and using that to cap, we now have
each config store its supported values and when requested returns either
the next highest or equal supported value, or if non the max config supported.

Bug: skia:
Change-Id: I8802d44c13b3b1703ee54a7e69b82102d4b8dc2d
Reviewed-on: https://skia-review.googlesource.com/24302
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>

src/gpu/vk/GrVkCaps.cpp

diff --git a/src/gpu/vk/GrVkCaps.cpp b/src/gpu/vk/GrVkCaps.cpp
index db92617..909b4fb 100644
--- a/src/gpu/vk/GrVkCaps.cpp
+++ b/src/gpu/vk/GrVkCaps.cpp
@@ -340,6 +340,47 @@
     }
 }
 
+void GrVkCaps::ConfigInfo::initSampleCounts(const GrVkInterface* interface,
+                                            VkPhysicalDevice physDev,
+                                            VkFormat format) {
+    VkImageUsageFlags usage = VK_IMAGE_USAGE_TRANSFER_SRC_BIT |
+                              VK_IMAGE_USAGE_TRANSFER_DST_BIT |
+                              VK_IMAGE_USAGE_SAMPLED_BIT |
+                              VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
+    VkImageCreateFlags createFlags = GrVkFormatIsSRGB(format, nullptr)
+        ? VK_IMAGE_CREATE_MUTABLE_FORMAT_BIT : 0;
+    VkImageFormatProperties properties;
+    GR_VK_CALL(interface, GetPhysicalDeviceImageFormatProperties(physDev,
+                                                                 format,
+                                                                 VK_IMAGE_TYPE_2D,
+                                                                 VK_IMAGE_TILING_OPTIMAL,
+                                                                 usage,
+                                                                 createFlags,
+                                                                 &properties));
+    VkSampleCountFlags flags = properties.sampleCounts;
+    if (flags & VK_SAMPLE_COUNT_1_BIT) {
+        fColorSampleCounts.push(0);
+    }
+    if (flags & VK_SAMPLE_COUNT_2_BIT) {
+        fColorSampleCounts.push(2);
+    }
+    if (flags & VK_SAMPLE_COUNT_4_BIT) {
+        fColorSampleCounts.push(4);
+    }
+    if (flags & VK_SAMPLE_COUNT_8_BIT) {
+        fColorSampleCounts.push(8);
+    }
+    if (flags & VK_SAMPLE_COUNT_16_BIT) {
+        fColorSampleCounts.push(16);
+    }
+    if (flags & VK_SAMPLE_COUNT_32_BIT) {
+        fColorSampleCounts.push(32);
+    }
+    if (flags & VK_SAMPLE_COUNT_64_BIT) {
+        fColorSampleCounts.push(64);
+    }
+}
+
 void GrVkCaps::ConfigInfo::init(const GrVkInterface* interface,
                                 VkPhysicalDevice physDev,
                                 VkFormat format) {
@@ -348,4 +389,22 @@
     GR_VK_CALL(interface, GetPhysicalDeviceFormatProperties(physDev, format, &props));
     InitConfigFlags(props.linearTilingFeatures, &fLinearFlags);
     InitConfigFlags(props.optimalTilingFeatures, &fOptimalFlags);
+    if (fOptimalFlags & kRenderable_Flag) {
+        this->initSampleCounts(interface, physDev, format);
+    }
 }
+
+int GrVkCaps::getSampleCount(int requestedCount, GrPixelConfig config) const {
+    int count = fConfigTable[config].fColorSampleCounts.count();
+    if (!count || !this->isConfigRenderable(config, true)) {
+        return 0;
+    }
+
+    for (int i = 0; i < count; ++i) {
+        if (fConfigTable[config].fColorSampleCounts[i] >= requestedCount) {
+            return fConfigTable[config].fColorSampleCounts[i];
+        }
+    }
+    return fConfigTable[config].fColorSampleCounts[count-1];
+}
+