Move shader compiling to ProgramBuilder and various ShaderBuilder cleanups.

src/gpu/gl/GrGLCaps.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrGLCaps.h"
 
 #include "GrGLContext.h"
 #include "glsl/GrGLSLCaps.h"
 #include "SkTSearch.h"
 #include "SkTSort.h"
 
 GrGLCaps::GrGLCaps(const GrContextOptions& contextOptions,
                    const GrGLContextInfo& ctxInfo,
                    const GrGLInterface* glInterface) : INHERITED(contextOptions) {
     fVerifiedColorConfigs.reset();
     fStencilFormats.reset();
     fMSFBOType = kNone_MSFBOType;
     fInvalidateFBType = kNone_InvalidateFBType;
     fLATCAlias = kLATC_LATCAlias;
     fMapBufferType = kNone_MapBufferType;
     fMaxFragmentUniformVectors = 0;
     fMaxVertexAttributes = 0;
     fMaxFragmentTextureUnits = 0;
     fRGBA8RenderbufferSupport = false;
     fBGRAIsInternalFormat = false;
-    fTextureSwizzleSupport = false;
     fUnpackRowLengthSupport = false;
     fUnpackFlipYSupport = false;
     fPackRowLengthSupport = false;
     fPackFlipYSupport = false;
     fTextureUsageSupport = false;
     fTexStorageSupport = false;
-    fTextureRedSupport = false;
     fImagingSupport = false;
     fTwoFormatLimit = false;
     fFragCoordsConventionSupport = false;
     fVertexArrayObjectSupport = false;
     fInstancedDrawingSupport = false;
     fDirectStateAccessSupport = false;
     fDebugSupport = false;
     fES2CompatibilitySupport = false;
     fMultisampleDisableSupport = false;
     fUseNonVBOVertexAndIndexDynamicData = false;
@@ skipping 39 matching lines @@
 
     if (kGL_GrGLStandard == standard) {
         fRGBA8RenderbufferSupport = true;
     } else {
         fRGBA8RenderbufferSupport = version >= GR_GL_VER(3,0) ||
                                     ctxInfo.hasExtension("GL_OES_rgb8_rgba8") ||
                                     ctxInfo.hasExtension("GL_ARM_rgba8");
     }
 
     if (kGL_GrGLStandard == standard) {
-        fTextureSwizzleSupport = version >= GR_GL_VER(3,3) ||
-                                 ctxInfo.hasExtension("GL_ARB_texture_swizzle");
-    } else {
-        fTextureSwizzleSupport = version >= GR_GL_VER(3,0);
-    }
-
-    if (kGL_GrGLStandard == standard) {
         fUnpackRowLengthSupport = true;
         fUnpackFlipYSupport = false;
         fPackRowLengthSupport = true;
         fPackFlipYSupport = false;
     } else {
         fUnpackRowLengthSupport = version >= GR_GL_VER(3,0) ||
                                   ctxInfo.hasExtension("GL_EXT_unpack_subimage");
         fUnpackFlipYSupport = ctxInfo.hasExtension("GL_CHROMIUM_flipy");
         fPackRowLengthSupport = version >= GR_GL_VER(3,0) ||
                                 ctxInfo.hasExtension("GL_NV_pack_subimage");
@@ skipping 17 matching lines @@
     }
 
     if (kGL_GrGLStandard == standard) {
         fTextureBarrierSupport = version >= GR_GL_VER(4,5) ||
                                  ctxInfo.hasExtension("GL_ARB_texture_barrier") ||
                                  ctxInfo.hasExtension("GL_NV_texture_barrier");
     } else {
         fTextureBarrierSupport = ctxInfo.hasExtension("GL_NV_texture_barrier");
     }
 
-    // ARB_texture_rg is part of OpenGL 3.0, but mesa doesn't support GL_RED 
-    // and GL_RG on FBO textures.
-    if (kMesa_GrGLDriver != ctxInfo.driver()) {
-        if (kGL_GrGLStandard == standard) {
-            fTextureRedSupport = version >= GR_GL_VER(3,0) ||
-                                 ctxInfo.hasExtension("GL_ARB_texture_rg");
-        } else {
-            fTextureRedSupport =  version >= GR_GL_VER(3,0) ||
-                                  ctxInfo.hasExtension("GL_EXT_texture_rg");
-        }
-    }
     fImagingSupport = kGL_GrGLStandard == standard &&
                       ctxInfo.hasExtension("GL_ARB_imaging");
 
     // ES 2 only guarantees RGBA/uchar + one other format/type combo for
     // ReadPixels. The other format has to checked at run-time since it
     // can change based on which render target is bound
     fTwoFormatLimit = kGLES_GrGLStandard == standard;
 
     // We only enable srgb support if both textures and FBOs support srgb.
     bool srgbSupport = false;
@@ skipping 320 matching lines @@
                 (ctxInfo.hasExtension("GL_ARB_draw_instanced") &&
                  ctxInfo.hasExtension("GL_ARB_instanced_arrays"));
     } else {
         fSupportsInstancedDraws =
                 version >= GR_GL_VER(3, 0) ||
                 (ctxInfo.hasExtension("GL_EXT_draw_instanced") &&
                  ctxInfo.hasExtension("GL_EXT_instanced_arrays"));
     }
 
     this->initConfigTexturableTable(ctxInfo, gli, srgbSupport);
+    // initGLSL must be called before this, so that we know if we have GL_RED/R8 support or not
     this->initConfigRenderableTable(ctxInfo, srgbSupport);
     this->initShaderPrecisionTable(ctxInfo, gli, glslCaps);
 
     this->applyOptionsOverrides(contextOptions);
     glslCaps->applyOptionsOverrides(contextOptions);
 }
 
 const char* get_glsl_version_decl_string(GrGLStandard standard, GrGLSLGeneration generation,
                                          bool isCoreProfile) {
     switch (generation) {
@@ skipping 82 matching lines @@
     // undefined results". This appears to be an issue with the 'any' call since even the simple
     // "result=black; if (any()) result=white;" code fails to compile. This issue comes into play
     // from our GrTextureDomain processor.
     glslCaps->fCanUseAnyFunctionInShader = kImagination_GrGLVendor != ctxInfo.vendor();
 
     glslCaps->fForceHighPrecisionNDSTransform = kARM_GrGLVendor == ctxInfo.vendor() ||
                                                 kPowerVR54x_GrGLRenderer == ctxInfo.renderer();
 
     glslCaps->fVersionDeclString = get_glsl_version_decl_string(standard, glslCaps->fGLSLGeneration,
                                                                 fIsCoreProfile);
+
+    if (kGLES_GrGLStandard == standard && k110_GrGLSLGeneration == glslCaps->fGLSLGeneration) {
+        glslCaps->fShaderDerivativeExtensionString = "GL_OES_standard_derivatives";
+    }
+
+    if (kGL_GrGLStandard == standard) {
+        glslCaps->fTextureSwizzleSupport = version >= GR_GL_VER(3,3) ||
+                                           ctxInfo.hasExtension("GL_ARB_texture_swizzle");
+    } else {
+        glslCaps->fTextureSwizzleSupport = version >= GR_GL_VER(3,0);
+    }
+
+    // ARB_texture_rg is part of OpenGL 3.0, but mesa doesn't support GL_RED 
+    // and GL_RG on FBO textures.
+    if (kMesa_GrGLDriver != ctxInfo.driver()) {
+        if (kGL_GrGLStandard == standard) {
+            glslCaps->fTextureRedSupport = version >= GR_GL_VER(3,0) ||
+                                           ctxInfo.hasExtension("GL_ARB_texture_rg");
+        } else {
+            glslCaps->fTextureRedSupport =  version >= GR_GL_VER(3,0) ||
+                                            ctxInfo.hasExtension("GL_EXT_texture_rg");
+        }
+    }
 }
 
 bool GrGLCaps::hasPathRenderingSupport(const GrGLContextInfo& ctxInfo, const GrGLInterface* gli) {
     bool hasChromiumPathRendering = ctxInfo.hasExtension("GL_CHROMIUM_path_rendering");
 
     if (!(ctxInfo.hasExtension("GL_NV_path_rendering") || hasChromiumPathRendering)) {
         return false;
     }
 
     if (kGL_GrGLStandard == ctxInfo.standard()) {
@@ skipping 45 matching lines @@
     //  color renderable: RGBA4, RGB5_A1, RGB565
     //  GL_EXT_texture_rg adds support for R8 as a color render target
     //  GL_OES_rgb8_rgba8 and/or GL_ARM_rgba8 adds support for RGBA8
     //  GL_EXT_texture_format_BGRA8888 and/or GL_APPLE_texture_format_BGRA8888 added BGRA support
 
     // ES 3.0
     // Same as ES 2.0 except R8 and RGBA8 are supported without extensions (the functions called
     // below already account for this).
 
     GrGLStandard standard = ctxInfo.standard();
+    GrGLSLCaps* glslCaps = static_cast<GrGLSLCaps*>(fShaderCaps.get());
 
     enum {
         kNo_MSAA = 0,
         kYes_MSAA = 1,
     };
 
     if (kGL_GrGLStandard == standard) {
         // Post 3.0 we will get R8
         // Prior to 3.0 we will get ALPHA8 (with GL_ARB_framebuffer_object)
         if (ctxInfo.version() >= GR_GL_VER(3,0) ||
             ctxInfo.hasExtension("GL_ARB_framebuffer_object")) {
             fConfigRenderSupport[kAlpha_8_GrPixelConfig][kNo_MSAA] = true;
             fConfigRenderSupport[kAlpha_8_GrPixelConfig][kYes_MSAA] = true;
         }
     } else {
         // On ES we can only hope for R8
-        fConfigRenderSupport[kAlpha_8_GrPixelConfig][kNo_MSAA] = fTextureRedSupport;
-        fConfigRenderSupport[kAlpha_8_GrPixelConfig][kYes_MSAA] = fTextureRedSupport;
+        fConfigRenderSupport[kAlpha_8_GrPixelConfig][kNo_MSAA] = glslCaps->fTextureRedSupport;
+        fConfigRenderSupport[kAlpha_8_GrPixelConfig][kYes_MSAA] = glslCaps->fTextureRedSupport;
     }
 
     if (kGL_GrGLStandard != standard) {
         // only available in ES
         fConfigRenderSupport[kRGB_565_GrPixelConfig][kNo_MSAA] = true;
         fConfigRenderSupport[kRGB_565_GrPixelConfig][kYes_MSAA] = true;
     }
 
     // we no longer support 444 as a render target
     fConfigRenderSupport[kRGBA_4444_GrPixelConfig][kNo_MSAA]  = false;
@@ skipping 44 matching lines @@
 
     if (this->isConfigTexturable(kAlpha_half_GrPixelConfig)) {
         if (kGL_GrGLStandard == standard) {
             fConfigRenderSupport[kAlpha_half_GrPixelConfig][kNo_MSAA] = true;
             fConfigRenderSupport[kAlpha_half_GrPixelConfig][kYes_MSAA] = true;
         } else if (ctxInfo.version() >= GR_GL_VER(3,0)) {
             fConfigRenderSupport[kAlpha_half_GrPixelConfig][kNo_MSAA] = true;
             // for now we don't support floating point MSAA on ES
             fConfigRenderSupport[kAlpha_half_GrPixelConfig][kYes_MSAA] = false;
         } else {
-            if (ctxInfo.hasExtension("GL_EXT_color_buffer_half_float") && fTextureRedSupport) {
+            if (ctxInfo.hasExtension("GL_EXT_color_buffer_half_float") &&
+                glslCaps->fTextureRedSupport) {
                 fConfigRenderSupport[kAlpha_half_GrPixelConfig][kNo_MSAA] = true;
             } else {
                 fConfigRenderSupport[kAlpha_half_GrPixelConfig][kNo_MSAA] = false;
             }
             // for now we don't support floating point MSAA on ES
             fConfigRenderSupport[kAlpha_half_GrPixelConfig][kYes_MSAA] = false;
         }
     }
     
     if (this->isConfigTexturable(kRGBA_half_GrPixelConfig)) {
@@ skipping 406 matching lines @@
 
     r.appendf("Core Profile: %s\n", (fIsCoreProfile ? "YES" : "NO"));
     r.appendf("MSAA Type: %s\n", kMSFBOExtStr[fMSFBOType]);
     r.appendf("Invalidate FB Type: %s\n", kInvalidateFBTypeStr[fInvalidateFBType]);
     r.appendf("Map Buffer Type: %s\n", kMapBufferTypeStr[fMapBufferType]);
     r.appendf("Max FS Uniform Vectors: %d\n", fMaxFragmentUniformVectors);
     r.appendf("Max FS Texture Units: %d\n", fMaxFragmentTextureUnits);
     r.appendf("Max Vertex Attributes: %d\n", fMaxVertexAttributes);
     r.appendf("Support RGBA8 Render Buffer: %s\n", (fRGBA8RenderbufferSupport ? "YES": "NO"));
     r.appendf("BGRA is an internal format: %s\n", (fBGRAIsInternalFormat ? "YES": "NO"));
-    r.appendf("Support texture swizzle: %s\n", (fTextureSwizzleSupport ? "YES": "NO"));
     r.appendf("Unpack Row length support: %s\n", (fUnpackRowLengthSupport ? "YES": "NO"));
     r.appendf("Unpack Flip Y support: %s\n", (fUnpackFlipYSupport ? "YES": "NO"));
     r.appendf("Pack Row length support: %s\n", (fPackRowLengthSupport ? "YES": "NO"));
     r.appendf("Pack Flip Y support: %s\n", (fPackFlipYSupport ? "YES": "NO"));
 
     r.appendf("Texture Usage support: %s\n", (fTextureUsageSupport ? "YES": "NO"));
     r.appendf("Texture Storage support: %s\n", (fTexStorageSupport ? "YES": "NO"));
-    r.appendf("GL_R support: %s\n", (fTextureRedSupport ? "YES": "NO"));
     r.appendf("GL_ARB_imaging support: %s\n", (fImagingSupport ? "YES": "NO"));
     r.appendf("Two Format Limit: %s\n", (fTwoFormatLimit ? "YES": "NO"));
     r.appendf("Fragment coord conventions support: %s\n",
              (fFragCoordsConventionSupport ? "YES": "NO"));
     r.appendf("Vertex array object support: %s\n", (fVertexArrayObjectSupport ? "YES": "NO"));
     r.appendf("Instanced drawing support: %s\n", (fInstancedDrawingSupport ? "YES": "NO"));
     r.appendf("Direct state access support: %s\n", (fDirectStateAccessSupport ? "YES": "NO"));
     r.appendf("Debug support: %s\n", (fDebugSupport ? "YES": "NO"));
     r.appendf("Multisample disable support: %s\n", (fMultisampleDisableSupport ? "YES" : "NO"));
     r.appendf("Use non-VBO for dynamic data: %s\n",
@@ skipping 85 matching lines @@
         for (int p = 0; p < kGrSLPrecisionCount; ++p) {
             glslCaps->fFloatPrecisions[kGeometry_GrShaderType][p] = 
                                                glslCaps->fFloatPrecisions[kVertex_GrShaderType][p];
         }
     }
 }