Split GrCaps impl out into its own cpp

src/gpu/GrCaps.cpp

Index: src/gpu/GrCaps.cpp
diff --git a/src/gpu/GrCaps.cpp b/src/gpu/GrCaps.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..eb2cf7dcbd45a270524e875b80f0c0f40aa04e0c
--- /dev/null
+++ b/src/gpu/GrCaps.cpp
@@ -0,0 +1,213 @@
+
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "GrCaps.h"
+#include "GrContextOptions.h"
+
+GrShaderCaps::GrShaderCaps() {
+    fShaderDerivativeSupport = false;
+    fGeometryShaderSupport = false;
+    fPathRenderingSupport = false;
+    fDstReadInShaderSupport = false;
+    fDualSourceBlendingSupport = false;
+    fMixedSamplesSupport = false;
+    fShaderPrecisionVaries = false;
+}
+
+static const char* shader_type_to_string(GrShaderType type) {
+    switch (type) {
+    case kVertex_GrShaderType:
+        return "vertex";
+    case kGeometry_GrShaderType:
+        return "geometry";
+    case kFragment_GrShaderType:
+        return "fragment";
+    }
+    return "";
+}
+
+static const char* precision_to_string(GrSLPrecision p) {
+    switch (p) {
+    case kLow_GrSLPrecision:
+        return "low";
+    case kMedium_GrSLPrecision:
+        return "medium";
+    case kHigh_GrSLPrecision:
+        return "high";
+    }
+    return "";
+}
+
+SkString GrShaderCaps::dump() const {
+    SkString r;
+    static const char* gNY[] = { "NO", "YES" };
+    r.appendf("Shader Derivative Support          : %s\n", gNY[fShaderDerivativeSupport]);
+    r.appendf("Geometry Shader Support            : %s\n", gNY[fGeometryShaderSupport]);
+    r.appendf("Path Rendering Support             : %s\n", gNY[fPathRenderingSupport]);
+    r.appendf("Dst Read In Shader Support         : %s\n", gNY[fDstReadInShaderSupport]);
+    r.appendf("Dual Source Blending Support       : %s\n", gNY[fDualSourceBlendingSupport]);
+    r.appendf("Mixed Samples Support              : %s\n", gNY[fMixedSamplesSupport]);
+
+    r.appendf("Shader Float Precisions (varies: %s):\n", gNY[fShaderPrecisionVaries]);
+
+    for (int s = 0; s < kGrShaderTypeCount; ++s) {
+        GrShaderType shaderType = static_cast<GrShaderType>(s);
+        r.appendf("\t%s:\n", shader_type_to_string(shaderType));
+        for (int p = 0; p < kGrSLPrecisionCount; ++p) {
+            if (fFloatPrecisions[s][p].supported()) {
+                GrSLPrecision precision = static_cast<GrSLPrecision>(p);
+                r.appendf("\t\t%s: log_low: %d log_high: %d bits: %d\n",
+                    precision_to_string(precision),
+                    fFloatPrecisions[s][p].fLogRangeLow,
+                    fFloatPrecisions[s][p].fLogRangeHigh,
+                    fFloatPrecisions[s][p].fBits);
+            }
+        }
+    }
+
+    return r;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+GrCaps::GrCaps(const GrContextOptions& options) {
+    fMipMapSupport = false;
+    fNPOTTextureTileSupport = false;
+    fTwoSidedStencilSupport = false;
+    fStencilWrapOpsSupport = false;
+    fDiscardRenderTargetSupport = false;
+    fReuseScratchTextures = true;
+    fGpuTracingSupport = false;
+    fCompressedTexSubImageSupport = false;
+    fOversizedStencilSupport = false;
+    fTextureBarrierSupport = false;
+
+    fUseDrawInsteadOfClear = false;
+
+    fBlendEquationSupport = kBasic_BlendEquationSupport;
+    fMapBufferFlags = kNone_MapFlags;
+
+    fMaxRenderTargetSize = 0;
+    fMaxTextureSize = 0;
+    fMaxSampleCount = 0;
+
+    memset(fConfigRenderSupport, 0, sizeof(fConfigRenderSupport));
+    memset(fConfigTextureSupport, 0, sizeof(fConfigTextureSupport));
+
+    fSupressPrints = options.fSuppressPrints;
+    fDrawPathMasksToCompressedTextureSupport = options.fDrawPathToCompressedTexture;
+}
+
+static SkString map_flags_to_string(uint32_t flags) {
+    SkString str;
+    if (GrCaps::kNone_MapFlags == flags) {
+        str = "none";
+    } else {
+        SkASSERT(GrCaps::kCanMap_MapFlag & flags);
+        SkDEBUGCODE(flags &= ~GrCaps::kCanMap_MapFlag);
+        str = "can_map";
+
+        if (GrCaps::kSubset_MapFlag & flags) {
+            str.append(" partial");
+        } else {
+            str.append(" full");
+        }
+        SkDEBUGCODE(flags &= ~GrCaps::kSubset_MapFlag);
+    }
+    SkASSERT(0 == flags); // Make sure we handled all the flags.
+    return str;
+}
+
+SkString GrCaps::dump() const {
+    SkString r;
+    static const char* gNY[] = {"NO", "YES"};
+    r.appendf("MIP Map Support                    : %s\n", gNY[fMipMapSupport]);
+    r.appendf("NPOT Texture Tile Support          : %s\n", gNY[fNPOTTextureTileSupport]);
+    r.appendf("Two Sided Stencil Support          : %s\n", gNY[fTwoSidedStencilSupport]);
+    r.appendf("Stencil Wrap Ops  Support          : %s\n", gNY[fStencilWrapOpsSupport]);
+    r.appendf("Discard Render Target Support      : %s\n", gNY[fDiscardRenderTargetSupport]);
+    r.appendf("Reuse Scratch Textures             : %s\n", gNY[fReuseScratchTextures]);
+    r.appendf("Gpu Tracing Support                : %s\n", gNY[fGpuTracingSupport]);
+    r.appendf("Compressed Update Support          : %s\n", gNY[fCompressedTexSubImageSupport]);
+    r.appendf("Oversized Stencil Support          : %s\n", gNY[fOversizedStencilSupport]);
+    r.appendf("Texture Barrier Support            : %s\n", gNY[fTextureBarrierSupport]);
+    r.appendf("Draw Instead of Clear [workaround] : %s\n", gNY[fUseDrawInsteadOfClear]);
+
+    r.appendf("Max Texture Size                   : %d\n", fMaxTextureSize);
+    r.appendf("Max Render Target Size             : %d\n", fMaxRenderTargetSize);
+    r.appendf("Max Sample Count                   : %d\n", fMaxSampleCount);
+
+    static const char* kBlendEquationSupportNames[] = {
+        "Basic",
+        "Advanced",
+        "Advanced Coherent",
+    };
+    GR_STATIC_ASSERT(0 == kBasic_BlendEquationSupport);
+    GR_STATIC_ASSERT(1 == kAdvanced_BlendEquationSupport);
+    GR_STATIC_ASSERT(2 == kAdvancedCoherent_BlendEquationSupport);
+    GR_STATIC_ASSERT(SK_ARRAY_COUNT(kBlendEquationSupportNames) == kLast_BlendEquationSupport + 1);
+
+    r.appendf("Blend Equation Support             : %s\n",
+              kBlendEquationSupportNames[fBlendEquationSupport]);
+    r.appendf("Map Buffer Support                 : %s\n",
+              map_flags_to_string(fMapBufferFlags).c_str());
+
+    static const char* kConfigNames[] = {
+        "Unknown",  // kUnknown_GrPixelConfig
+        "Alpha8",   // kAlpha_8_GrPixelConfig,
+        "Index8",   // kIndex_8_GrPixelConfig,
+        "RGB565",   // kRGB_565_GrPixelConfig,
+        "RGBA444",  // kRGBA_4444_GrPixelConfig,
+        "RGBA8888", // kRGBA_8888_GrPixelConfig,
+        "BGRA8888", // kBGRA_8888_GrPixelConfig,
+        "SRGBA8888",// kSRGBA_8888_GrPixelConfig,
+        "ETC1",     // kETC1_GrPixelConfig,
+        "LATC",     // kLATC_GrPixelConfig,
+        "R11EAC",   // kR11_EAC_GrPixelConfig,
+        "ASTC12x12",// kASTC_12x12_GrPixelConfig,
+        "RGBAFloat",// kRGBA_float_GrPixelConfig
+        "AlphaHalf",// kAlpha_half_GrPixelConfig
+        "RGBAHalf", // kRGBA_half_GrPixelConfig
+    };
+    GR_STATIC_ASSERT(0  == kUnknown_GrPixelConfig);
+    GR_STATIC_ASSERT(1  == kAlpha_8_GrPixelConfig);
+    GR_STATIC_ASSERT(2  == kIndex_8_GrPixelConfig);
+    GR_STATIC_ASSERT(3  == kRGB_565_GrPixelConfig);
+    GR_STATIC_ASSERT(4  == kRGBA_4444_GrPixelConfig);
+    GR_STATIC_ASSERT(5  == kRGBA_8888_GrPixelConfig);
+    GR_STATIC_ASSERT(6  == kBGRA_8888_GrPixelConfig);
+    GR_STATIC_ASSERT(7  == kSRGBA_8888_GrPixelConfig);
+    GR_STATIC_ASSERT(8  == kETC1_GrPixelConfig);
+    GR_STATIC_ASSERT(9  == kLATC_GrPixelConfig);
+    GR_STATIC_ASSERT(10  == kR11_EAC_GrPixelConfig);
+    GR_STATIC_ASSERT(11 == kASTC_12x12_GrPixelConfig);
+    GR_STATIC_ASSERT(12 == kRGBA_float_GrPixelConfig);
+    GR_STATIC_ASSERT(13 == kAlpha_half_GrPixelConfig);
+    GR_STATIC_ASSERT(14 == kRGBA_half_GrPixelConfig);
+    GR_STATIC_ASSERT(SK_ARRAY_COUNT(kConfigNames) == kGrPixelConfigCnt);
+
+    SkASSERT(!fConfigRenderSupport[kUnknown_GrPixelConfig][0]);
+    SkASSERT(!fConfigRenderSupport[kUnknown_GrPixelConfig][1]);
+
+    for (size_t i = 1; i < SK_ARRAY_COUNT(kConfigNames); ++i)  {
+        r.appendf("%s is renderable: %s, with MSAA: %s\n",
+                  kConfigNames[i],
+                  gNY[fConfigRenderSupport[i][0]],
+                  gNY[fConfigRenderSupport[i][1]]);
+    }
+
+    SkASSERT(!fConfigTextureSupport[kUnknown_GrPixelConfig]);
+
+    for (size_t i = 1; i < SK_ARRAY_COUNT(kConfigNames); ++i)  {
+        r.appendf("%s is uploadable to a texture: %s\n",
+                  kConfigNames[i],
+                  gNY[fConfigTextureSupport[i]]);
+    }
+
+    return r;
+}