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Unified Diff: webkit/gpu/webgraphicscontext3d_in_process_impl.cc

Issue 16046003: Move webkit/gpu into webkit/common/gpu (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: fix includes in content/common/gpu/client/gl_helper_* Created 7 years, 7 months ago
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Index: webkit/gpu/webgraphicscontext3d_in_process_impl.cc
diff --git a/webkit/gpu/webgraphicscontext3d_in_process_impl.cc b/webkit/gpu/webgraphicscontext3d_in_process_impl.cc
deleted file mode 100644
index b5ef5ca7e407483ddf61bf6a3852f99ec0a45c3d..0000000000000000000000000000000000000000
--- a/webkit/gpu/webgraphicscontext3d_in_process_impl.cc
+++ /dev/null
@@ -1,1813 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "webkit/gpu/webgraphicscontext3d_in_process_impl.h"
-
-#include <string.h>
-
-#include <algorithm>
-#include <string>
-#include <vector>
-
-#include "base/lazy_instance.h"
-#include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/strings/string_split.h"
-#include "base/synchronization/lock.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebString.h"
-#include "ui/gl/gl_bindings.h"
-#include "ui/gl/gl_bindings_skia_in_process.h"
-#include "ui/gl/gl_context.h"
-#include "ui/gl/gl_implementation.h"
-#include "ui/gl/gl_surface.h"
-
-namespace webkit {
-namespace gpu {
-
-enum {
- MAX_VERTEX_UNIFORM_VECTORS = 0x8DFB,
- MAX_VARYING_VECTORS = 0x8DFC,
- MAX_FRAGMENT_UNIFORM_VECTORS = 0x8DFD
-};
-
-struct WebGraphicsContext3DInProcessImpl::ShaderSourceEntry {
- explicit ShaderSourceEntry(WGC3Denum shader_type)
- : type(shader_type),
- is_valid(false) {
- }
-
- WGC3Denum type;
- scoped_ptr<char[]> source;
- scoped_ptr<char[]> log;
- scoped_ptr<char[]> translated_source;
- bool is_valid;
-};
-
-WebGraphicsContext3DInProcessImpl::WebGraphicsContext3DInProcessImpl(
- gfx::GLSurface* surface,
- gfx::GLContext* context,
- bool render_directly_to_web_view)
- : initialized_(false),
- render_directly_to_web_view_(render_directly_to_web_view),
- is_gles2_(false),
- have_ext_framebuffer_object_(false),
- have_ext_framebuffer_multisample_(false),
- have_angle_framebuffer_multisample_(false),
- have_ext_oes_standard_derivatives_(false),
- have_ext_oes_egl_image_external_(false),
- texture_(0),
- fbo_(0),
- depth_stencil_buffer_(0),
- cached_width_(0),
- cached_height_(0),
- multisample_fbo_(0),
- multisample_depth_stencil_buffer_(0),
- multisample_color_buffer_(0),
- bound_fbo_(0),
- bound_texture_(0),
- scanline_(0),
- gl_context_(context),
- gl_surface_(surface),
- fragment_compiler_(0),
- vertex_compiler_(0) {
-}
-
-// All instances in a process that share resources are in the same share group.
-static base::LazyInstance<
- std::set<WebGraphicsContext3DInProcessImpl*> >
- g_all_shared_contexts = LAZY_INSTANCE_INITIALIZER;
-static base::LazyInstance<base::Lock>::Leaky
- g_all_shared_contexts_lock = LAZY_INSTANCE_INITIALIZER;
-
-WebGraphicsContext3DInProcessImpl::~WebGraphicsContext3DInProcessImpl() {
- base::AutoLock a(g_all_shared_contexts_lock.Get());
- g_all_shared_contexts.Pointer()->erase(this);
-
- if (!initialized_)
- return;
-
- makeContextCurrent();
-
- if (attributes_.antialias) {
- glDeleteRenderbuffersEXT(1, &multisample_color_buffer_);
- if (attributes_.depth || attributes_.stencil)
- glDeleteRenderbuffersEXT(1, &multisample_depth_stencil_buffer_);
- glDeleteFramebuffersEXT(1, &multisample_fbo_);
- } else {
- if (attributes_.depth || attributes_.stencil)
- glDeleteRenderbuffersEXT(1, &depth_stencil_buffer_);
- }
- glDeleteTextures(1, &texture_);
- if (scanline_)
- delete[] scanline_;
- glDeleteFramebuffersEXT(1, &fbo_);
-
- gl_context_->ReleaseCurrent(gl_surface_.get());
- gl_context_->Destroy();
- gl_surface_->Destroy();
-
- for (ShaderSourceMap::iterator ii = shader_source_map_.begin();
- ii != shader_source_map_.end(); ++ii) {
- if (ii->second)
- delete ii->second;
- }
- AngleDestroyCompilers();
-}
-
-WebGraphicsContext3DInProcessImpl*
-WebGraphicsContext3DInProcessImpl::CreateForWindow(
- WebGraphicsContext3D::Attributes attributes,
- gfx::AcceleratedWidget window,
- gfx::GLShareGroup* share_group) {
- if (!gfx::GLSurface::InitializeOneOff())
- return NULL;
-
- scoped_refptr<gfx::GLSurface> gl_surface =
- gfx::GLSurface::CreateViewGLSurface(false, window);
- if (!gl_surface)
- return NULL;
-
- gfx::GpuPreference gpu_preference = gfx::PreferDiscreteGpu;
-
- scoped_refptr<gfx::GLContext> gl_context = gfx::GLContext::CreateGLContext(
- share_group,
- gl_surface.get(),
- gpu_preference);
- if (!gl_context)
- return NULL;
- scoped_ptr<WebGraphicsContext3DInProcessImpl> context(
- new WebGraphicsContext3DInProcessImpl(
- gl_surface.get(), gl_context.get(), true));
- if (!context->Initialize(attributes))
- return NULL;
- return context.release();
-}
-
-bool WebGraphicsContext3DInProcessImpl::Initialize(
- WebGraphicsContext3D::Attributes attributes) {
- is_gles2_ = gfx::GetGLImplementation() == gfx::kGLImplementationEGLGLES2;
-
-
- attributes_ = attributes;
-
- // FIXME: for the moment we disable multisampling for the compositor.
- // It actually works in this implementation, but there are a few
- // considerations. First, we likely want to reduce the fuzziness in
- // these tests as much as possible because we want to run pixel tests.
- // Second, Mesa's multisampling doesn't seem to antialias straight
- // edges in some CSS 3D samples. Third, we don't have multisampling
- // support for the compositor in the normal case at the time of this
- // writing.
- if (render_directly_to_web_view_)
- attributes_.antialias = false;
-
- if (!gl_context_->MakeCurrent(gl_surface_)) {
- gl_context_ = NULL;
- return false;
- }
-
- const char* extensions =
- reinterpret_cast<const char*>(glGetString(GL_EXTENSIONS));
- DCHECK(extensions);
- have_ext_framebuffer_object_ =
- strstr(extensions, "GL_EXT_framebuffer_object") != NULL;
- have_ext_framebuffer_multisample_ =
- strstr(extensions, "GL_EXT_framebuffer_multisample") != NULL;
-#if !defined(OS_ANDROID)
- // Some Android Qualcomm drivers falsely report this ANGLE extension string.
- // See http://crbug.com/165736
- have_angle_framebuffer_multisample_ =
- strstr(extensions, "GL_ANGLE_framebuffer_multisample") != NULL;
-#endif
- have_ext_oes_standard_derivatives_ =
- strstr(extensions, "GL_OES_standard_derivatives") != NULL;
- have_ext_oes_egl_image_external_ =
- strstr(extensions, "GL_OES_EGL_image_external") != NULL;
-
- ValidateAttributes();
-
- if (!is_gles2_) {
- glEnable(GL_VERTEX_PROGRAM_POINT_SIZE);
- glEnable(GL_POINT_SPRITE);
- }
-
- if (!AngleCreateCompilers()) {
- AngleDestroyCompilers();
- return false;
- }
-
- initialized_ = true;
- gl_context_->ReleaseCurrent(gl_surface_.get());
-
- if (attributes_.shareResources)
- g_all_shared_contexts.Pointer()->insert(this);
-
- return true;
-}
-
-void WebGraphicsContext3DInProcessImpl::ValidateAttributes() {
- const char* extensions =
- reinterpret_cast<const char*>(glGetString(GL_EXTENSIONS));
-
- if (attributes_.stencil) {
- if (strstr(extensions, "GL_OES_packed_depth_stencil") ||
- strstr(extensions, "GL_EXT_packed_depth_stencil")) {
- if (!attributes_.depth) {
- attributes_.depth = true;
- }
- } else {
- attributes_.stencil = false;
- }
- }
- if (attributes_.antialias) {
- bool isValidVendor = true;
-#if defined(OS_MACOSX)
- // Currently in Mac we only turn on antialias if vendor is NVIDIA.
- const char* vendor = reinterpret_cast<const char*>(glGetString(GL_VENDOR));
- if (!strstr(vendor, "NVIDIA"))
- isValidVendor = false;
-#endif
- if (!(isValidVendor &&
- (have_ext_framebuffer_multisample_ ||
- (have_angle_framebuffer_multisample_ &&
- strstr(extensions, "GL_OES_rgb8_rgba8")))))
- attributes_.antialias = false;
-
- // Don't antialias when using Mesa to ensure more reliable testing and
- // because it doesn't appear to multisample straight lines correctly.
- const char* renderer =
- reinterpret_cast<const char*>(glGetString(GL_RENDERER));
- if (!strncmp(renderer, "Mesa", 4)) {
- attributes_.antialias = false;
- }
- }
-}
-
-void WebGraphicsContext3DInProcessImpl::ResolveMultisampledFramebuffer(
- WGC3Dint x, WGC3Dint y, WGC3Dsizei width, WGC3Dsizei height) {
- if (attributes_.antialias) {
- glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, multisample_fbo_);
- glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, fbo_);
- if (have_ext_framebuffer_multisample_) {
- glBlitFramebufferEXT(x, y,
- x + width, y + height,
- x, y,
- x + width, y + height,
- GL_COLOR_BUFFER_BIT, GL_NEAREST);
- } else {
- DCHECK(have_angle_framebuffer_multisample_);
- glBlitFramebufferANGLE(x, y,
- x + width, y + height,
- x, y,
- x + width, y + height,
- GL_COLOR_BUFFER_BIT, GL_NEAREST);
- }
- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, bound_fbo_);
- }
-}
-
-bool WebGraphicsContext3DInProcessImpl::makeContextCurrent() {
- return gl_context_->MakeCurrent(gl_surface_.get());
-}
-
-int WebGraphicsContext3DInProcessImpl::width() {
- return cached_width_;
-}
-
-int WebGraphicsContext3DInProcessImpl::height() {
- return cached_height_;
-}
-
-bool WebGraphicsContext3DInProcessImpl::isGLES2Compliant() {
- return is_gles2_;
-}
-
-bool WebGraphicsContext3DInProcessImpl::setParentContext(
- WebGraphicsContext3D* parent_context) {
- return false;
-}
-
-WebGLId WebGraphicsContext3DInProcessImpl::getPlatformTextureId() {
- return texture_;
-}
-
-void WebGraphicsContext3DInProcessImpl::prepareTexture() {
- if (!gl_surface_->IsOffscreen()) {
- gl_surface_->SwapBuffers();
- } else if (!render_directly_to_web_view_) {
- // We need to prepare our rendering results for the compositor.
- makeContextCurrent();
- ResolveMultisampledFramebuffer(0, 0, cached_width_, cached_height_);
- }
-}
-
-void WebGraphicsContext3DInProcessImpl::postSubBufferCHROMIUM(
- int x, int y, int width, int height) {
- DCHECK(gl_surface_->HasExtension("GL_CHROMIUM_post_sub_buffer"));
- gl_surface_->PostSubBuffer(x, y, width, height);
-}
-
-namespace {
-
-int CreateTextureObject(GLenum target) {
- GLuint texture = 0;
- glGenTextures(1, &texture);
- glBindTexture(target, texture);
- glTexParameterf(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameterf(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- return texture;
-}
-
-} // anonymous namespace
-
-void WebGraphicsContext3DInProcessImpl::reshape(int width, int height) {
- cached_width_ = width;
- cached_height_ = height;
- makeContextCurrent();
-
- bool must_restore_fbo = false;
- if (gl_surface_->IsOffscreen())
- must_restore_fbo = AllocateOffscreenFrameBuffer(width, height);
-
- gl_surface_->Resize(gfx::Size(width, height));
- ClearRenderTarget();
-
- if (must_restore_fbo)
- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, bound_fbo_);
-
- if (scanline_) {
- delete[] scanline_;
- scanline_ = 0;
- }
- scanline_ = new unsigned char[width * 4];
-}
-
-void WebGraphicsContext3DInProcessImpl::reshapeWithScaleFactor(
- int width, int height, float scaleFactor) {
- reshape(width, height);
-}
-
-bool WebGraphicsContext3DInProcessImpl::AllocateOffscreenFrameBuffer(
- int width, int height) {
- GLenum target = GL_TEXTURE_2D;
-
- if (!texture_) {
- // Generate the texture object
- texture_ = CreateTextureObject(target);
- // Generate the framebuffer object
- glGenFramebuffersEXT(1, &fbo_);
- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_);
- bound_fbo_ = fbo_;
- if (attributes_.depth || attributes_.stencil)
- glGenRenderbuffersEXT(1, &depth_stencil_buffer_);
- // Generate the multisample framebuffer object
- if (attributes_.antialias) {
- glGenFramebuffersEXT(1, &multisample_fbo_);
- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, multisample_fbo_);
- bound_fbo_ = multisample_fbo_;
- glGenRenderbuffersEXT(1, &multisample_color_buffer_);
- if (attributes_.depth || attributes_.stencil)
- glGenRenderbuffersEXT(1, &multisample_depth_stencil_buffer_);
- }
- }
-
- GLint internal_multisampled_color_format = 0;
- GLint internal_color_format = 0;
- GLint color_format = 0;
- GLint internal_depth_stencil_format = 0;
- if (attributes_.alpha) {
- // GL_RGBA8_OES == GL_RGBA8
- internal_multisampled_color_format = GL_RGBA8;
- internal_color_format = is_gles2_ ? GL_RGBA : GL_RGBA8;
- color_format = GL_RGBA;
- } else {
- // GL_RGB8_OES == GL_RGB8
- internal_multisampled_color_format = GL_RGB8;
- internal_color_format = is_gles2_ ? GL_RGB : GL_RGB8;
- color_format = GL_RGB;
- }
- if (attributes_.stencil || attributes_.depth) {
- // We don't allow the logic where stencil is required and depth is not.
- // See GraphicsContext3DInternal constructor.
- if (attributes_.stencil && attributes_.depth) {
- internal_depth_stencil_format = GL_DEPTH24_STENCIL8_EXT;
- } else {
- if (is_gles2_)
- internal_depth_stencil_format = GL_DEPTH_COMPONENT16;
- else
- internal_depth_stencil_format = GL_DEPTH_COMPONENT;
- }
- }
-
- bool must_restore_fbo = false;
-
- // Resize multisampling FBO
- if (attributes_.antialias) {
- GLint max_sample_count;
- glGetIntegerv(GL_MAX_SAMPLES_EXT, &max_sample_count);
- GLint sample_count = std::min(8, max_sample_count);
- if (bound_fbo_ != multisample_fbo_) {
- must_restore_fbo = true;
- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, multisample_fbo_);
- }
- glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, multisample_color_buffer_);
- if (have_ext_framebuffer_multisample_) {
- glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT,
- sample_count,
- internal_multisampled_color_format,
- width,
- height);
- } else {
- DCHECK(have_angle_framebuffer_multisample_);
- glRenderbufferStorageMultisampleANGLE(GL_RENDERBUFFER_EXT,
- sample_count,
- internal_multisampled_color_format,
- width,
- height);
- }
- glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
- GL_COLOR_ATTACHMENT0_EXT,
- GL_RENDERBUFFER_EXT,
- multisample_color_buffer_);
- if (attributes_.stencil || attributes_.depth) {
- glBindRenderbufferEXT(GL_RENDERBUFFER_EXT,
- multisample_depth_stencil_buffer_);
- if (have_ext_framebuffer_multisample_) {
- glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT,
- sample_count,
- internal_depth_stencil_format,
- width,
- height);
- } else {
- DCHECK(have_angle_framebuffer_multisample_);
- glRenderbufferStorageMultisampleANGLE(GL_RENDERBUFFER_EXT,
- sample_count,
- internal_depth_stencil_format,
- width,
- height);
- }
- if (attributes_.stencil)
- glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
- GL_STENCIL_ATTACHMENT_EXT,
- GL_RENDERBUFFER_EXT,
- multisample_depth_stencil_buffer_);
- if (attributes_.depth)
- glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
- GL_DEPTH_ATTACHMENT_EXT,
- GL_RENDERBUFFER_EXT,
- multisample_depth_stencil_buffer_);
- }
- glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
- GLenum status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
- if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
- LOG(ERROR) << "Multisampling framebuffer was incomplete";
-
- // FIXME: cleanup.
- NOTIMPLEMENTED();
- }
- }
-
- // Resize regular FBO
- if (bound_fbo_ != fbo_) {
- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_);
- must_restore_fbo = true;
- }
- glBindTexture(target, texture_);
- glTexImage2D(target, 0, internal_color_format,
- width, height,
- 0, color_format, GL_UNSIGNED_BYTE, 0);
- glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
- GL_COLOR_ATTACHMENT0_EXT,
- target,
- texture_,
- 0);
- glBindTexture(target, 0);
- if (!attributes_.antialias && (attributes_.stencil || attributes_.depth)) {
- glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, depth_stencil_buffer_);
- glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT,
- internal_depth_stencil_format,
- width, height);
- if (attributes_.stencil)
- glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
- GL_STENCIL_ATTACHMENT_EXT,
- GL_RENDERBUFFER_EXT,
- depth_stencil_buffer_);
- if (attributes_.depth)
- glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
- GL_DEPTH_ATTACHMENT_EXT,
- GL_RENDERBUFFER_EXT,
- depth_stencil_buffer_);
- glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
- }
- GLenum status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
- if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
- LOG(ERROR) << "Framebuffer was incomplete";
-
- // FIXME: cleanup.
- NOTIMPLEMENTED();
- }
-
- if (attributes_.antialias) {
- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, multisample_fbo_);
- if (bound_fbo_ == multisample_fbo_)
- must_restore_fbo = false;
- }
- return must_restore_fbo;
-}
-
-void WebGraphicsContext3DInProcessImpl::ClearRenderTarget() {
- // Initialize renderbuffers to 0.
- GLfloat clearColor[] = {0, 0, 0, 0}, clearDepth = 0;
- GLint clearStencil = 0;
- GLboolean colorMask[] = {GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE};
- GLboolean depthMask = GL_TRUE;
- GLuint stencilMask = 0xffffffff;
- GLboolean isScissorEnabled = GL_FALSE;
- GLboolean isDitherEnabled = GL_FALSE;
- GLbitfield clearMask = GL_COLOR_BUFFER_BIT;
- glGetFloatv(GL_COLOR_CLEAR_VALUE, clearColor);
- glClearColor(0, 0, 0, 0);
- glGetBooleanv(GL_COLOR_WRITEMASK, colorMask);
- glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
- if (attributes_.depth) {
- glGetFloatv(GL_DEPTH_CLEAR_VALUE, &clearDepth);
- glClearDepth(1);
- glGetBooleanv(GL_DEPTH_WRITEMASK, &depthMask);
- glDepthMask(GL_TRUE);
- clearMask |= GL_DEPTH_BUFFER_BIT;
- }
- if (attributes_.stencil) {
- glGetIntegerv(GL_STENCIL_CLEAR_VALUE, &clearStencil);
- glClearStencil(0);
- glGetIntegerv(GL_STENCIL_WRITEMASK,
- reinterpret_cast<GLint*>(&stencilMask));
- glStencilMaskSeparate(GL_FRONT, 0xffffffff);
- clearMask |= GL_STENCIL_BUFFER_BIT;
- }
- isScissorEnabled = glIsEnabled(GL_SCISSOR_TEST);
- glDisable(GL_SCISSOR_TEST);
- isDitherEnabled = glIsEnabled(GL_DITHER);
- glDisable(GL_DITHER);
-
- glClear(clearMask);
-
- glClearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3]);
- glColorMask(colorMask[0], colorMask[1], colorMask[2], colorMask[3]);
- if (attributes_.depth) {
- glClearDepth(clearDepth);
- glDepthMask(depthMask);
- }
- if (attributes_.stencil) {
- glClearStencil(clearStencil);
- glStencilMaskSeparate(GL_FRONT, stencilMask);
- }
- if (isScissorEnabled)
- glEnable(GL_SCISSOR_TEST);
- else
- glDisable(GL_SCISSOR_TEST);
- if (isDitherEnabled)
- glEnable(GL_DITHER);
- else
- glDisable(GL_DITHER);
-}
-
-void WebGraphicsContext3DInProcessImpl::FlipVertically(
- unsigned char* framebuffer, unsigned int width, unsigned int height) {
- unsigned char* scanline = scanline_;
- if (!scanline)
- return;
- unsigned int row_bytes = width * 4;
- unsigned int count = height / 2;
- for (unsigned int i = 0; i < count; i++) {
- unsigned char* row_a = framebuffer + i * row_bytes;
- unsigned char* row_b = framebuffer + (height - i - 1) * row_bytes;
- // FIXME: this is where the multiplication of the alpha
- // channel into the color buffer will need to occur if the
- // user specifies the "premultiplyAlpha" flag in the context
- // creation attributes.
- memcpy(scanline, row_b, row_bytes);
- memcpy(row_b, row_a, row_bytes);
- memcpy(row_a, scanline, row_bytes);
- }
-}
-
-bool WebGraphicsContext3DInProcessImpl::readBackFramebuffer(
- unsigned char* pixels, size_t bufferSize, WebGLId framebuffer,
- int width, int height) {
- if (bufferSize != static_cast<size_t>(4 * width * height))
- return false;
-
- makeContextCurrent();
-
- // Earlier versions of this code used the GPU to flip the
- // framebuffer vertically before reading it back for compositing
- // via software. This code was quite complicated, used a lot of
- // GPU memory, and didn't provide an obvious speedup. Since this
- // vertical flip is only a temporary solution anyway until Chrome
- // is fully GPU composited, it wasn't worth the complexity.
-
- // In this implementation fbo_, not 0, is the drawing buffer, so
- // special-case that.
- if (framebuffer == 0)
- framebuffer = fbo_;
-
- if (framebuffer == fbo_)
- ResolveMultisampledFramebuffer(0, 0, width, height);
- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, framebuffer);
-
- GLint pack_alignment = 4;
- bool must_restore_pack_alignment = false;
- glGetIntegerv(GL_PACK_ALIGNMENT, &pack_alignment);
- if (pack_alignment > 4) {
- glPixelStorei(GL_PACK_ALIGNMENT, 4);
- must_restore_pack_alignment = true;
- }
-
- if (is_gles2_) {
- // FIXME: consider testing for presence of GL_OES_read_format
- // and GL_EXT_read_format_bgra, and using GL_BGRA_EXT here
- // directly.
- glReadPixels(0, 0, width, height,
- GL_RGBA, GL_UNSIGNED_BYTE, pixels);
- for (size_t i = 0; i < bufferSize; i += 4) {
- std::swap(pixels[i], pixels[i + 2]);
- }
- } else {
- glReadPixels(0, 0, width, height,
- GL_BGRA, GL_UNSIGNED_BYTE, pixels);
- }
-
- if (must_restore_pack_alignment)
- glPixelStorei(GL_PACK_ALIGNMENT, pack_alignment);
-
- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, bound_fbo_);
-
- if (pixels)
- FlipVertically(pixels, width, height);
-
- return true;
-}
-
-bool WebGraphicsContext3DInProcessImpl::readBackFramebuffer(
- unsigned char* pixels, size_t bufferSize) {
- return readBackFramebuffer(pixels, bufferSize, fbo_, width(), height());
-}
-
-void WebGraphicsContext3DInProcessImpl::synthesizeGLError(WGC3Denum error) {
- if (synthetic_errors_set_.find(error) == synthetic_errors_set_.end()) {
- synthetic_errors_set_.insert(error);
- synthetic_errors_list_.push_back(error);
- }
-}
-
-void* WebGraphicsContext3DInProcessImpl::mapBufferSubDataCHROMIUM(
- WGC3Denum target, WGC3Dintptr offset,
- WGC3Dsizeiptr size, WGC3Denum access) {
- return 0;
-}
-
-void WebGraphicsContext3DInProcessImpl::unmapBufferSubDataCHROMIUM(
- const void* mem) {
-}
-
-void* WebGraphicsContext3DInProcessImpl::mapTexSubImage2DCHROMIUM(
- WGC3Denum target, WGC3Dint level, WGC3Dint xoffset, WGC3Dint yoffset,
- WGC3Dsizei width, WGC3Dsizei height, WGC3Denum format, WGC3Denum type,
- WGC3Denum access) {
- return 0;
-}
-
-void WebGraphicsContext3DInProcessImpl::unmapTexSubImage2DCHROMIUM(
- const void* mem) {
-}
-
-void WebGraphicsContext3DInProcessImpl::setVisibilityCHROMIUM(bool visible) {
-}
-
-void WebGraphicsContext3DInProcessImpl::
- setMemoryAllocationChangedCallbackCHROMIUM(
- WebGraphicsMemoryAllocationChangedCallbackCHROMIUM* callback) {
-}
-
-void WebGraphicsContext3DInProcessImpl::discardFramebufferEXT(
- WGC3Denum target, WGC3Dsizei numAttachments, const WGC3Denum* attachments) {
-}
-
-void WebGraphicsContext3DInProcessImpl::discardBackbufferCHROMIUM() {
-}
-
-void WebGraphicsContext3DInProcessImpl::ensureBackbufferCHROMIUM() {
-}
-
-void WebGraphicsContext3DInProcessImpl::copyTextureToParentTextureCHROMIUM(
- WebGLId id, WebGLId id2) {
- NOTIMPLEMENTED();
-}
-
-void WebGraphicsContext3DInProcessImpl::bindUniformLocationCHROMIUM(
- WebGLId program, WGC3Dint location, const WGC3Dchar* uniform) {
- NOTIMPLEMENTED();
-}
-
-void WebGraphicsContext3DInProcessImpl::genMailboxCHROMIUM(
- WGC3Dbyte* mailbox) {
- NOTIMPLEMENTED();
-}
-
-void WebGraphicsContext3DInProcessImpl::produceTextureCHROMIUM(
- WGC3Denum target, const WGC3Dbyte* mailbox) {
- NOTIMPLEMENTED();
-}
-
-void WebGraphicsContext3DInProcessImpl::consumeTextureCHROMIUM(
- WGC3Denum target, const WGC3Dbyte* mailbox) {
- NOTIMPLEMENTED();
-}
-
-WebString WebGraphicsContext3DInProcessImpl::
- getRequestableExtensionsCHROMIUM() {
- return WebString();
-}
-
-void WebGraphicsContext3DInProcessImpl::requestExtensionCHROMIUM(const char*) {
-}
-
-void WebGraphicsContext3DInProcessImpl::blitFramebufferCHROMIUM(
- WGC3Dint srcX0, WGC3Dint srcY0, WGC3Dint srcX1, WGC3Dint srcY1,
- WGC3Dint dstX0, WGC3Dint dstY0, WGC3Dint dstX1, WGC3Dint dstY1,
- WGC3Dbitfield mask, WGC3Denum filter) {
-}
-
-void WebGraphicsContext3DInProcessImpl::renderbufferStorageMultisampleCHROMIUM(
- WGC3Denum target, WGC3Dsizei samples, WGC3Denum internalformat,
- WGC3Dsizei width, WGC3Dsizei height) {
-}
-
-// Helper macros to reduce the amount of code.
-
-#define DELEGATE_TO_GL(name, glname) \
-void WebGraphicsContext3DInProcessImpl::name() { \
- makeContextCurrent(); \
- gl##glname(); \
-}
-
-#define DELEGATE_TO_GL_1(name, glname, t1) \
-void WebGraphicsContext3DInProcessImpl::name(t1 a1) { \
- makeContextCurrent(); \
- gl##glname(a1); \
-}
-
-#define DELEGATE_TO_GL_1R(name, glname, t1, rt) \
-rt WebGraphicsContext3DInProcessImpl::name(t1 a1) { \
- makeContextCurrent(); \
- return gl##glname(a1); \
-}
-
-#define DELEGATE_TO_GL_1RB(name, glname, t1, rt) \
-rt WebGraphicsContext3DInProcessImpl::name(t1 a1) { \
- makeContextCurrent(); \
- return gl##glname(a1) ? true : false; \
-}
-
-#define DELEGATE_TO_GL_2(name, glname, t1, t2) \
-void WebGraphicsContext3DInProcessImpl::name(t1 a1, t2 a2) { \
- makeContextCurrent(); \
- gl##glname(a1, a2); \
-}
-
-#define DELEGATE_TO_GL_2R(name, glname, t1, t2, rt) \
-rt WebGraphicsContext3DInProcessImpl::name(t1 a1, t2 a2) { \
- makeContextCurrent(); \
- return gl##glname(a1, a2); \
-}
-
-#define DELEGATE_TO_GL_3(name, glname, t1, t2, t3) \
-void WebGraphicsContext3DInProcessImpl::name(t1 a1, t2 a2, t3 a3) { \
- makeContextCurrent(); \
- gl##glname(a1, a2, a3); \
-}
-
-#define DELEGATE_TO_GL_4(name, glname, t1, t2, t3, t4) \
-void WebGraphicsContext3DInProcessImpl::name(t1 a1, t2 a2, t3 a3, t4 a4) { \
- makeContextCurrent(); \
- gl##glname(a1, a2, a3, a4); \
-}
-
-#define DELEGATE_TO_GL_5(name, glname, t1, t2, t3, t4, t5) \
-void WebGraphicsContext3DInProcessImpl::name(t1 a1, t2 a2, t3 a3, t4 a4, \
- t5 a5) { \
- makeContextCurrent(); \
- gl##glname(a1, a2, a3, a4, a5); \
-}
-
-#define DELEGATE_TO_GL_6(name, glname, t1, t2, t3, t4, t5, t6) \
-void WebGraphicsContext3DInProcessImpl::name(t1 a1, t2 a2, t3 a3, t4 a4, \
- t5 a5, t6 a6) { \
- makeContextCurrent(); \
- gl##glname(a1, a2, a3, a4, a5, a6); \
-}
-
-#define DELEGATE_TO_GL_7(name, glname, t1, t2, t3, t4, t5, t6, t7) \
-void WebGraphicsContext3DInProcessImpl::name(t1 a1, t2 a2, t3 a3, t4 a4, \
- t5 a5, t6 a6, t7 a7) { \
- makeContextCurrent(); \
- gl##glname(a1, a2, a3, a4, a5, a6, a7); \
-}
-
-#define DELEGATE_TO_GL_8(name, glname, t1, t2, t3, t4, t5, t6, t7, t8) \
-void WebGraphicsContext3DInProcessImpl::name(t1 a1, t2 a2, t3 a3, t4 a4, \
- t5 a5, t6 a6, t7 a7, t8 a8) { \
- makeContextCurrent(); \
- gl##glname(a1, a2, a3, a4, a5, a6, a7, a8); \
-}
-
-#define DELEGATE_TO_GL_9(name, glname, t1, t2, t3, t4, t5, t6, t7, t8, t9) \
-void WebGraphicsContext3DInProcessImpl::name(t1 a1, t2 a2, t3 a3, t4 a4, \
- t5 a5, t6 a6, t7 a7, t8 a8, \
- t9 a9) { \
- makeContextCurrent(); \
- gl##glname(a1, a2, a3, a4, a5, a6, a7, a8, a9); \
-}
-
-void WebGraphicsContext3DInProcessImpl::activeTexture(WGC3Denum texture) {
- // FIXME: query number of textures available.
- if (texture < GL_TEXTURE0 || texture > GL_TEXTURE0+32)
- // FIXME: raise exception.
- return;
-
- makeContextCurrent();
- glActiveTexture(texture);
-}
-
-DELEGATE_TO_GL_2(attachShader, AttachShader, WebGLId, WebGLId)
-
-DELEGATE_TO_GL_3(bindAttribLocation, BindAttribLocation,
- WebGLId, WGC3Duint, const WGC3Dchar*)
-
-DELEGATE_TO_GL_2(bindBuffer, BindBuffer, WGC3Denum, WebGLId);
-
-void WebGraphicsContext3DInProcessImpl::bindFramebuffer(
- WGC3Denum target, WebGLId framebuffer) {
- makeContextCurrent();
- if (!framebuffer)
- framebuffer = (attributes_.antialias ? multisample_fbo_ : fbo_);
- if (framebuffer != bound_fbo_) {
- glBindFramebufferEXT(target, framebuffer);
- bound_fbo_ = framebuffer;
- }
-}
-
-DELEGATE_TO_GL_2(bindRenderbuffer, BindRenderbufferEXT, WGC3Denum, WebGLId)
-
-void WebGraphicsContext3DInProcessImpl::bindTexture(
- WGC3Denum target, WebGLId texture) {
- makeContextCurrent();
- glBindTexture(target, texture);
- bound_texture_ = texture;
-}
-
-DELEGATE_TO_GL_4(blendColor, BlendColor,
- WGC3Dfloat, WGC3Dfloat, WGC3Dfloat, WGC3Dfloat)
-
-DELEGATE_TO_GL_1(blendEquation, BlendEquation, WGC3Denum)
-
-DELEGATE_TO_GL_2(blendEquationSeparate, BlendEquationSeparate,
- WGC3Denum, WGC3Denum)
-
-DELEGATE_TO_GL_2(blendFunc, BlendFunc, WGC3Denum, WGC3Denum)
-
-DELEGATE_TO_GL_4(blendFuncSeparate, BlendFuncSeparate,
- WGC3Denum, WGC3Denum, WGC3Denum, WGC3Denum)
-
-DELEGATE_TO_GL_4(bufferData, BufferData,
- WGC3Denum, WGC3Dsizeiptr, const void*, WGC3Denum)
-
-DELEGATE_TO_GL_4(bufferSubData, BufferSubData,
- WGC3Denum, WGC3Dintptr, WGC3Dsizeiptr, const void*)
-
-DELEGATE_TO_GL_1R(checkFramebufferStatus, CheckFramebufferStatusEXT,
- WGC3Denum, WGC3Denum)
-
-DELEGATE_TO_GL_1(clear, Clear, WGC3Dbitfield)
-
-DELEGATE_TO_GL_4(clearColor, ClearColor,
- WGC3Dclampf, WGC3Dclampf, WGC3Dclampf, WGC3Dclampf)
-
-DELEGATE_TO_GL_1(clearDepth, ClearDepth, WGC3Dclampf)
-
-DELEGATE_TO_GL_1(clearStencil, ClearStencil, WGC3Dint)
-
-DELEGATE_TO_GL_4(colorMask, ColorMask,
- WGC3Dboolean, WGC3Dboolean, WGC3Dboolean, WGC3Dboolean)
-
-void WebGraphicsContext3DInProcessImpl::compileShader(WebGLId shader) {
- makeContextCurrent();
-
- ShaderSourceMap::iterator result = shader_source_map_.find(shader);
- if (result == shader_source_map_.end()) {
- // Passing down to gl driver to generate the correct error; or the case
- // where the shader deletion is delayed when it's attached to a program.
- glCompileShader(shader);
- return;
- }
- ShaderSourceEntry* entry = result->second;
- DCHECK(entry);
-
- if (!AngleValidateShaderSource(entry)) {
- // Shader didn't validate; don't move forward with compiling
- // translated source.
- return;
- }
-
- const char* translated_source = entry->translated_source.get();
- int shader_length = translated_source ? strlen(translated_source) : 0;
- glShaderSource(
- shader, 1, const_cast<const char**>(&translated_source), &shader_length);
- glCompileShader(shader);
-
-#ifndef NDEBUG
- int compileStatus;
- glGetShaderiv(shader, GL_COMPILE_STATUS, &compileStatus);
- // DCHECK that ANGLE generated GLSL will be accepted by OpenGL
- DCHECK(compileStatus == GL_TRUE);
-#endif
-}
-
-DELEGATE_TO_GL_8(compressedTexImage2D, CompressedTexImage2D,
- WGC3Denum, WGC3Dint, WGC3Denum, WGC3Dint, WGC3Dint,
- WGC3Dsizei, WGC3Dsizei, const void*)
-
-DELEGATE_TO_GL_9(compressedTexSubImage2D, CompressedTexSubImage2D,
- WGC3Denum, WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dint,
- WGC3Denum, WGC3Dsizei, const void*)
-
-void WebGraphicsContext3DInProcessImpl::copyTexImage2D(
- WGC3Denum target, WGC3Dint level, WGC3Denum internalformat, WGC3Dint x,
- WGC3Dint y, WGC3Dsizei width, WGC3Dsizei height, WGC3Dint border) {
- makeContextCurrent();
-
- bool needsResolve = (attributes_.antialias && bound_fbo_ == multisample_fbo_);
- if (needsResolve) {
- ResolveMultisampledFramebuffer(x, y, width, height);
- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_);
- }
-
- glCopyTexImage2D(target, level, internalformat, x, y, width, height, border);
-
- if (needsResolve)
- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, bound_fbo_);
-}
-
-void WebGraphicsContext3DInProcessImpl::copyTexSubImage2D(
- WGC3Denum target, WGC3Dint level, WGC3Dint xoffset, WGC3Dint yoffset,
- WGC3Dint x, WGC3Dint y, WGC3Dsizei width, WGC3Dsizei height) {
- makeContextCurrent();
-
- bool needsResolve = (attributes_.antialias && bound_fbo_ == multisample_fbo_);
- if (needsResolve) {
- ResolveMultisampledFramebuffer(x, y, width, height);
- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_);
- }
-
- glCopyTexSubImage2D(target, level, xoffset, yoffset, x, y, width, height);
-
- if (needsResolve)
- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, bound_fbo_);
-}
-
-DELEGATE_TO_GL_1(cullFace, CullFace, WGC3Denum)
-
-DELEGATE_TO_GL_1(depthFunc, DepthFunc, WGC3Denum)
-
-DELEGATE_TO_GL_1(depthMask, DepthMask, WGC3Dboolean)
-
-DELEGATE_TO_GL_2(depthRange, DepthRange, WGC3Dclampf, WGC3Dclampf)
-
-DELEGATE_TO_GL_2(detachShader, DetachShader, WebGLId, WebGLId)
-
-DELEGATE_TO_GL_1(disable, Disable, WGC3Denum)
-
-DELEGATE_TO_GL_1(disableVertexAttribArray, DisableVertexAttribArray, WGC3Duint)
-
-DELEGATE_TO_GL_3(drawArrays, DrawArrays, WGC3Denum, WGC3Dint, WGC3Dsizei)
-
-void WebGraphicsContext3DInProcessImpl::drawElements(
- WGC3Denum mode, WGC3Dsizei count, WGC3Denum type, WGC3Dintptr offset) {
- makeContextCurrent();
- glDrawElements(mode, count, type,
- reinterpret_cast<void*>(static_cast<intptr_t>(offset)));
-}
-
-DELEGATE_TO_GL_1(enable, Enable, WGC3Denum)
-
-DELEGATE_TO_GL_1(enableVertexAttribArray, EnableVertexAttribArray, WGC3Duint)
-
-DELEGATE_TO_GL(finish, Finish)
-
-DELEGATE_TO_GL(flush, Flush)
-
-DELEGATE_TO_GL_4(framebufferRenderbuffer, FramebufferRenderbufferEXT,
- WGC3Denum, WGC3Denum, WGC3Denum, WebGLId)
-
-DELEGATE_TO_GL_5(framebufferTexture2D, FramebufferTexture2DEXT,
- WGC3Denum, WGC3Denum, WGC3Denum, WebGLId, WGC3Dint)
-
-DELEGATE_TO_GL_1(frontFace, FrontFace, WGC3Denum)
-
-void WebGraphicsContext3DInProcessImpl::generateMipmap(WGC3Denum target) {
- makeContextCurrent();
- if (is_gles2_ || have_ext_framebuffer_object_)
- glGenerateMipmapEXT(target);
- // FIXME: provide alternative code path? This will be unpleasant
- // to implement if glGenerateMipmapEXT is not available -- it will
- // require a texture readback and re-upload.
-}
-
-bool WebGraphicsContext3DInProcessImpl::getActiveAttrib(
- WebGLId program, WGC3Duint index, ActiveInfo& info) {
- makeContextCurrent();
- if (!program) {
- synthesizeGLError(GL_INVALID_VALUE);
- return false;
- }
- GLint max_name_length = -1;
- glGetProgramiv(program, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, &max_name_length);
- if (max_name_length < 0)
- return false;
- scoped_ptr<GLchar[]> name(new GLchar[max_name_length]);
- GLsizei length = 0;
- GLint size = -1;
- GLenum type = 0;
- glGetActiveAttrib(program, index, max_name_length,
- &length, &size, &type, name.get());
- if (size < 0) {
- return false;
- }
- info.name = WebString::fromUTF8(name.get(), length);
- info.type = type;
- info.size = size;
- return true;
-}
-
-bool WebGraphicsContext3DInProcessImpl::getActiveUniform(
- WebGLId program, WGC3Duint index, ActiveInfo& info) {
- makeContextCurrent();
- GLint max_name_length = -1;
- glGetProgramiv(program, GL_ACTIVE_UNIFORM_MAX_LENGTH, &max_name_length);
- if (max_name_length < 0)
- return false;
- scoped_ptr<GLchar[]> name(new GLchar[max_name_length]);
- GLsizei length = 0;
- GLint size = -1;
- GLenum type = 0;
- glGetActiveUniform(program, index, max_name_length,
- &length, &size, &type, name.get());
- if (size < 0) {
- return false;
- }
- info.name = WebString::fromUTF8(name.get(), length);
- info.type = type;
- info.size = size;
- return true;
-}
-
-DELEGATE_TO_GL_4(getAttachedShaders, GetAttachedShaders,
- WebGLId, WGC3Dsizei, WGC3Dsizei*, WebGLId*)
-
-DELEGATE_TO_GL_2R(getAttribLocation, GetAttribLocation,
- WebGLId, const WGC3Dchar*, WGC3Dint)
-
-DELEGATE_TO_GL_2(getBooleanv, GetBooleanv,
- WGC3Denum, WGC3Dboolean*)
-
-DELEGATE_TO_GL_3(getBufferParameteriv, GetBufferParameteriv,
- WGC3Denum, WGC3Denum, WGC3Dint*)
-
-WebGraphicsContext3D::Attributes WebGraphicsContext3DInProcessImpl::
- getContextAttributes() {
- return attributes_;
-}
-
-WGC3Denum WebGraphicsContext3DInProcessImpl::getError() {
- DCHECK(synthetic_errors_list_.size() == synthetic_errors_set_.size());
- if (!synthetic_errors_set_.empty()) {
- WGC3Denum error = synthetic_errors_list_.front();
- synthetic_errors_list_.pop_front();
- synthetic_errors_set_.erase(error);
- return error;
- }
-
- makeContextCurrent();
- return glGetError();
-}
-
-bool WebGraphicsContext3DInProcessImpl::isContextLost() {
- return false;
-}
-
-DELEGATE_TO_GL_2(getFloatv, GetFloatv, WGC3Denum, WGC3Dfloat*)
-
-void WebGraphicsContext3DInProcessImpl::getFramebufferAttachmentParameteriv(
- WGC3Denum target, WGC3Denum attachment,
- WGC3Denum pname, WGC3Dint* value) {
- makeContextCurrent();
- if (attachment == GL_DEPTH_STENCIL_ATTACHMENT)
- attachment = GL_DEPTH_ATTACHMENT; // Or GL_STENCIL_ATTACHMENT;
- // either works.
- glGetFramebufferAttachmentParameterivEXT(target, attachment, pname, value);
-}
-
-void WebGraphicsContext3DInProcessImpl::getIntegerv(
- WGC3Denum pname, WGC3Dint* value) {
- makeContextCurrent();
- if (is_gles2_) {
- glGetIntegerv(pname, value);
- return;
- }
- // Need to emulate MAX_FRAGMENT/VERTEX_UNIFORM_VECTORS and
- // MAX_VARYING_VECTORS because desktop GL's corresponding queries
- // return the number of components whereas GLES2 return the number
- // of vectors (each vector has 4 components). Therefore, the value
- // returned by desktop GL needs to be divided by 4.
- switch (pname) {
- case MAX_FRAGMENT_UNIFORM_VECTORS:
- glGetIntegerv(GL_MAX_FRAGMENT_UNIFORM_COMPONENTS, value);
- *value /= 4;
- break;
- case MAX_VERTEX_UNIFORM_VECTORS:
- glGetIntegerv(GL_MAX_VERTEX_UNIFORM_COMPONENTS, value);
- *value /= 4;
- break;
- case MAX_VARYING_VECTORS:
- glGetIntegerv(GL_MAX_VARYING_FLOATS, value);
- *value /= 4;
- break;
- default:
- glGetIntegerv(pname, value);
- }
-}
-
-DELEGATE_TO_GL_3(getProgramiv, GetProgramiv, WebGLId, WGC3Denum, WGC3Dint*)
-
-WebString WebGraphicsContext3DInProcessImpl::getProgramInfoLog(
- WebGLId program) {
- makeContextCurrent();
- GLint log_length;
- glGetProgramiv(program, GL_INFO_LOG_LENGTH, &log_length);
- if (!log_length)
- return WebString();
- scoped_ptr<GLchar[]> log(new GLchar[log_length]);
- GLsizei returned_log_length;
- glGetProgramInfoLog(program, log_length, &returned_log_length, log.get());
- DCHECK(log_length == returned_log_length + 1);
- WebString res = WebString::fromUTF8(log.get(), returned_log_length);
- return res;
-}
-
-DELEGATE_TO_GL_3(getRenderbufferParameteriv, GetRenderbufferParameterivEXT,
- WGC3Denum, WGC3Denum, WGC3Dint*)
-
-void WebGraphicsContext3DInProcessImpl::getShaderiv(
- WebGLId shader, WGC3Denum pname, WGC3Dint* value) {
- makeContextCurrent();
-
- ShaderSourceMap::iterator result = shader_source_map_.find(shader);
- if (result != shader_source_map_.end()) {
- ShaderSourceEntry* entry = result->second;
- DCHECK(entry);
- switch (pname) {
- case GL_COMPILE_STATUS:
- if (!entry->is_valid) {
- *value = 0;
- return;
- }
- break;
- case GL_INFO_LOG_LENGTH:
- if (!entry->is_valid) {
- *value = entry->log.get() ? strlen(entry->log.get()) : 0;
- if (*value)
- (*value)++;
- return;
- }
- break;
- case GL_SHADER_SOURCE_LENGTH:
- *value = entry->source.get() ? strlen(entry->source.get()) : 0;
- if (*value)
- (*value)++;
- return;
- }
- }
-
- glGetShaderiv(shader, pname, value);
-}
-
-void WebGraphicsContext3DInProcessImpl::getShaderPrecisionFormat(
- WGC3Denum shadertype, WGC3Denum precisiontype,
- WGC3Dint* range, WGC3Dint* precision) {
- switch (precisiontype) {
- case GL_LOW_INT:
- case GL_MEDIUM_INT:
- case GL_HIGH_INT:
- // These values are for a 32-bit twos-complement integer format.
- range[0] = 31;
- range[1] = 30;
- *precision = 0;
- break;
- case GL_LOW_FLOAT:
- case GL_MEDIUM_FLOAT:
- case GL_HIGH_FLOAT:
- // These values are for an IEEE single-precision floating-point format.
- range[0] = 127;
- range[1] = 127;
- *precision = 23;
- break;
- default:
- NOTREACHED();
- break;
- }
-
- if (gfx::GetGLImplementation() == gfx::kGLImplementationEGLGLES2 &&
- gfx::g_driver_gl.fn.glGetShaderPrecisionFormatFn) {
- // This function is sometimes defined even though it's really just
- // a stub, so we need to set range and precision as if it weren't
- // defined before calling it.
- // On Mac OS with some GPUs, calling this generates a
- // GL_INVALID_OPERATION error. Avoid calling it on non-GLES2
- // platforms.
- glGetShaderPrecisionFormat(shadertype, precisiontype,
- range, precision);
- }
-}
-
-WebString WebGraphicsContext3DInProcessImpl::getShaderInfoLog(WebGLId shader) {
- makeContextCurrent();
-
- ShaderSourceMap::iterator result = shader_source_map_.find(shader);
- if (result != shader_source_map_.end()) {
- ShaderSourceEntry* entry = result->second;
- DCHECK(entry);
- if (!entry->is_valid) {
- if (!entry->log)
- return WebString();
- WebString res = WebString::fromUTF8(
- entry->log.get(), strlen(entry->log.get()));
- return res;
- }
- }
-
- GLint log_length = 0;
- glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &log_length);
- if (log_length <= 1)
- return WebString();
- scoped_ptr<GLchar[]> log(new GLchar[log_length]);
- GLsizei returned_log_length;
- glGetShaderInfoLog(shader, log_length, &returned_log_length, log.get());
- DCHECK(log_length == returned_log_length + 1);
- WebString res = WebString::fromUTF8(log.get(), returned_log_length);
- return res;
-}
-
-WebString WebGraphicsContext3DInProcessImpl::getShaderSource(WebGLId shader) {
- makeContextCurrent();
-
- ShaderSourceMap::iterator result = shader_source_map_.find(shader);
- if (result != shader_source_map_.end()) {
- ShaderSourceEntry* entry = result->second;
- DCHECK(entry);
- if (!entry->source)
- return WebString();
- WebString res = WebString::fromUTF8(
- entry->source.get(), strlen(entry->source.get()));
- return res;
- }
-
- GLint log_length = 0;
- glGetShaderiv(shader, GL_SHADER_SOURCE_LENGTH, &log_length);
- if (log_length <= 1)
- return WebString();
- scoped_ptr<GLchar[]> log(new GLchar[log_length]);
- GLsizei returned_log_length;
- glGetShaderSource(shader, log_length, &returned_log_length, log.get());
- DCHECK(log_length == returned_log_length + 1);
- WebString res = WebString::fromUTF8(log.get(), returned_log_length);
- return res;
-}
-
-WebString WebGraphicsContext3DInProcessImpl::getString(WGC3Denum name) {
- makeContextCurrent();
- std::string result;
- if (name == GL_EXTENSIONS) {
- result = gl_context_->GetExtensions();
- if (!is_gles2_) {
- std::vector<std::string> split;
- base::SplitString(result, ' ', &split);
- if (std::find(split.begin(), split.end(), "GL_EXT_bgra") != split.end()) {
- // If we support GL_EXT_bgra, pretend we support a couple of GLES2
- // extension that are a subset of it.
- result += " GL_EXT_texture_format_BGRA8888 GL_EXT_read_format_bgra";
- }
- }
- std::string surface_extensions = gl_surface_->GetExtensions();
- if (!surface_extensions.empty())
- result += " " + surface_extensions;
- } else {
- result = reinterpret_cast<const char*>(glGetString(name));
- }
- return WebString::fromUTF8(result.c_str());
-}
-
-DELEGATE_TO_GL_3(getTexParameterfv, GetTexParameterfv,
- WGC3Denum, WGC3Denum, WGC3Dfloat*)
-
-DELEGATE_TO_GL_3(getTexParameteriv, GetTexParameteriv,
- WGC3Denum, WGC3Denum, WGC3Dint*)
-
-DELEGATE_TO_GL_3(getUniformfv, GetUniformfv, WebGLId, WGC3Dint, WGC3Dfloat*)
-
-DELEGATE_TO_GL_3(getUniformiv, GetUniformiv, WebGLId, WGC3Dint, WGC3Dint*)
-
-DELEGATE_TO_GL_2R(getUniformLocation, GetUniformLocation,
- WebGLId, const WGC3Dchar*, WGC3Dint)
-
-DELEGATE_TO_GL_3(getVertexAttribfv, GetVertexAttribfv,
- WGC3Duint, WGC3Denum, WGC3Dfloat*)
-
-DELEGATE_TO_GL_3(getVertexAttribiv, GetVertexAttribiv,
- WGC3Duint, WGC3Denum, WGC3Dint*)
-
-WGC3Dsizeiptr WebGraphicsContext3DInProcessImpl::getVertexAttribOffset(
- WGC3Duint index, WGC3Denum pname) {
- makeContextCurrent();
- void* pointer;
- glGetVertexAttribPointerv(index, pname, &pointer);
- return static_cast<WGC3Dsizeiptr>(reinterpret_cast<intptr_t>(pointer));
-}
-
-DELEGATE_TO_GL_2(hint, Hint, WGC3Denum, WGC3Denum)
-
-DELEGATE_TO_GL_1RB(isBuffer, IsBuffer, WebGLId, WGC3Dboolean)
-
-DELEGATE_TO_GL_1RB(isEnabled, IsEnabled, WGC3Denum, WGC3Dboolean)
-
-DELEGATE_TO_GL_1RB(isFramebuffer, IsFramebufferEXT, WebGLId, WGC3Dboolean)
-
-DELEGATE_TO_GL_1RB(isProgram, IsProgram, WebGLId, WGC3Dboolean)
-
-DELEGATE_TO_GL_1RB(isRenderbuffer, IsRenderbufferEXT, WebGLId, WGC3Dboolean)
-
-DELEGATE_TO_GL_1RB(isShader, IsShader, WebGLId, WGC3Dboolean)
-
-DELEGATE_TO_GL_1RB(isTexture, IsTexture, WebGLId, WGC3Dboolean)
-
-DELEGATE_TO_GL_1(lineWidth, LineWidth, WGC3Dfloat)
-
-DELEGATE_TO_GL_1(linkProgram, LinkProgram, WebGLId)
-
-DELEGATE_TO_GL_2(pixelStorei, PixelStorei, WGC3Denum, WGC3Dint)
-
-DELEGATE_TO_GL_2(polygonOffset, PolygonOffset, WGC3Dfloat, WGC3Dfloat)
-
-void WebGraphicsContext3DInProcessImpl::readPixels(
- WGC3Dint x, WGC3Dint y, WGC3Dsizei width, WGC3Dsizei height,
- WGC3Denum format, WGC3Denum type, void* pixels) {
- makeContextCurrent();
- // FIXME: remove the two glFlush calls when the driver bug is fixed, i.e.,
- // all previous rendering calls should be done before reading pixels.
- glFlush();
- bool needs_resolve =
- (attributes_.antialias && bound_fbo_ == multisample_fbo_);
- if (needs_resolve) {
- ResolveMultisampledFramebuffer(x, y, width, height);
- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_);
- glFlush();
- }
-
- glReadPixels(x, y, width, height, format, type, pixels);
-
- if (needs_resolve)
- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, bound_fbo_);
-}
-
-void WebGraphicsContext3DInProcessImpl::releaseShaderCompiler() {
-}
-
-void WebGraphicsContext3DInProcessImpl::renderbufferStorage(
- WGC3Denum target,
- WGC3Denum internalformat,
- WGC3Dsizei width,
- WGC3Dsizei height) {
- makeContextCurrent();
- if (!is_gles2_) {
- switch (internalformat) {
- case GL_DEPTH_STENCIL:
- internalformat = GL_DEPTH24_STENCIL8_EXT;
- break;
- case GL_DEPTH_COMPONENT16:
- internalformat = GL_DEPTH_COMPONENT;
- break;
- case GL_RGBA4:
- case GL_RGB5_A1:
- internalformat = GL_RGBA;
- break;
- case 0x8D62: // GL_RGB565
- internalformat = GL_RGB;
- break;
- }
- }
- glRenderbufferStorageEXT(target, internalformat, width, height);
-}
-
-DELEGATE_TO_GL_2(sampleCoverage, SampleCoverage, WGC3Dclampf, WGC3Dboolean)
-
-DELEGATE_TO_GL_4(scissor, Scissor, WGC3Dint, WGC3Dint, WGC3Dsizei, WGC3Dsizei)
-
-void WebGraphicsContext3DInProcessImpl::texImage2D(
- WGC3Denum target, WGC3Dint level, WGC3Denum internalFormat,
- WGC3Dsizei width, WGC3Dsizei height, WGC3Dint border,
- WGC3Denum format, WGC3Denum type, const void* pixels) {
- makeContextCurrent();
- if (gfx::GetGLImplementation() != gfx::kGLImplementationEGLGLES2) {
- if (format == GL_BGRA_EXT && internalFormat == GL_BGRA_EXT) {
- internalFormat = GL_RGBA;
- } else if (type == GL_FLOAT) {
- if (format == GL_RGBA) {
- internalFormat = GL_RGBA32F_ARB;
- } else if (format == GL_RGB) {
- internalFormat = GL_RGB32F_ARB;
- }
- }
- }
- glTexImage2D(target, level, internalFormat,
- width, height, border, format, type, pixels);
-}
-
-void WebGraphicsContext3DInProcessImpl::shaderSource(
- WebGLId shader, const WGC3Dchar* source) {
- makeContextCurrent();
- GLint length = source ? strlen(source) : 0;
- ShaderSourceMap::iterator result = shader_source_map_.find(shader);
- if (result != shader_source_map_.end()) {
- ShaderSourceEntry* entry = result->second;
- DCHECK(entry);
- entry->source.reset(new char[length + 1]);
- if (source)
- memcpy(entry->source.get(), source, (length + 1) * sizeof(char));
- else
- entry->source[0] = '\0';
- } else {
- glShaderSource(shader, 1, &source, &length);
- }
-}
-
-DELEGATE_TO_GL_3(stencilFunc, StencilFunc, WGC3Denum, WGC3Dint, WGC3Duint)
-
-DELEGATE_TO_GL_4(stencilFuncSeparate, StencilFuncSeparate,
- WGC3Denum, WGC3Denum, WGC3Dint, WGC3Duint)
-
-DELEGATE_TO_GL_1(stencilMask, StencilMask, WGC3Duint)
-
-DELEGATE_TO_GL_2(stencilMaskSeparate, StencilMaskSeparate,
- WGC3Denum, WGC3Duint)
-
-DELEGATE_TO_GL_3(stencilOp, StencilOp,
- WGC3Denum, WGC3Denum, WGC3Denum)
-
-DELEGATE_TO_GL_4(stencilOpSeparate, StencilOpSeparate,
- WGC3Denum, WGC3Denum, WGC3Denum, WGC3Denum)
-
-DELEGATE_TO_GL_3(texParameterf, TexParameterf, WGC3Denum, WGC3Denum, WGC3Dfloat)
-
-DELEGATE_TO_GL_3(texParameteri, TexParameteri, WGC3Denum, WGC3Denum, WGC3Dint)
-
-DELEGATE_TO_GL_9(texSubImage2D, TexSubImage2D,
- WGC3Denum, WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dsizei,
- WGC3Dsizei, WGC3Denum, WGC3Denum, const void*)
-
-DELEGATE_TO_GL_2(uniform1f, Uniform1f, WGC3Dint, WGC3Dfloat)
-
-DELEGATE_TO_GL_3(uniform1fv, Uniform1fv,
- WGC3Dint, WGC3Dsizei, const WGC3Dfloat*)
-
-DELEGATE_TO_GL_2(uniform1i, Uniform1i, WGC3Dint, WGC3Dint)
-
-DELEGATE_TO_GL_3(uniform1iv, Uniform1iv, WGC3Dint, WGC3Dsizei, const WGC3Dint*)
-
-DELEGATE_TO_GL_3(uniform2f, Uniform2f, WGC3Dint, WGC3Dfloat, WGC3Dfloat)
-
-DELEGATE_TO_GL_3(uniform2fv, Uniform2fv,
- WGC3Dint, WGC3Dsizei, const WGC3Dfloat*)
-
-DELEGATE_TO_GL_3(uniform2i, Uniform2i, WGC3Dint, WGC3Dint, WGC3Dint)
-
-DELEGATE_TO_GL_3(uniform2iv, Uniform2iv, WGC3Dint, WGC3Dsizei, const WGC3Dint*)
-
-DELEGATE_TO_GL_4(uniform3f, Uniform3f,
- WGC3Dint, WGC3Dfloat, WGC3Dfloat, WGC3Dfloat)
-
-DELEGATE_TO_GL_3(uniform3fv, Uniform3fv,
- WGC3Dint, WGC3Dsizei, const WGC3Dfloat*)
-
-DELEGATE_TO_GL_4(uniform3i, Uniform3i, WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dint)
-
-DELEGATE_TO_GL_3(uniform3iv, Uniform3iv, WGC3Dint, WGC3Dsizei, const WGC3Dint*)
-
-DELEGATE_TO_GL_5(uniform4f, Uniform4f, WGC3Dint,
- WGC3Dfloat, WGC3Dfloat, WGC3Dfloat, WGC3Dfloat)
-
-DELEGATE_TO_GL_3(uniform4fv, Uniform4fv,
- WGC3Dint, WGC3Dsizei, const WGC3Dfloat*)
-
-DELEGATE_TO_GL_5(uniform4i, Uniform4i, WGC3Dint,
- WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dint)
-
-DELEGATE_TO_GL_3(uniform4iv, Uniform4iv, WGC3Dint, WGC3Dsizei, const WGC3Dint*)
-
-DELEGATE_TO_GL_4(uniformMatrix2fv, UniformMatrix2fv,
- WGC3Dint, WGC3Dsizei, WGC3Dboolean, const WGC3Dfloat*)
-
-DELEGATE_TO_GL_4(uniformMatrix3fv, UniformMatrix3fv,
- WGC3Dint, WGC3Dsizei, WGC3Dboolean, const WGC3Dfloat*)
-
-DELEGATE_TO_GL_4(uniformMatrix4fv, UniformMatrix4fv,
- WGC3Dint, WGC3Dsizei, WGC3Dboolean, const WGC3Dfloat*)
-
-DELEGATE_TO_GL_1(useProgram, UseProgram, WebGLId)
-
-DELEGATE_TO_GL_1(validateProgram, ValidateProgram, WebGLId)
-
-DELEGATE_TO_GL_2(vertexAttrib1f, VertexAttrib1f, WGC3Duint, WGC3Dfloat)
-
-DELEGATE_TO_GL_2(vertexAttrib1fv, VertexAttrib1fv, WGC3Duint, const WGC3Dfloat*)
-
-DELEGATE_TO_GL_3(vertexAttrib2f, VertexAttrib2f,
- WGC3Duint, WGC3Dfloat, WGC3Dfloat)
-
-DELEGATE_TO_GL_2(vertexAttrib2fv, VertexAttrib2fv, WGC3Duint, const WGC3Dfloat*)
-
-DELEGATE_TO_GL_4(vertexAttrib3f, VertexAttrib3f,
- WGC3Duint, WGC3Dfloat, WGC3Dfloat, WGC3Dfloat)
-
-DELEGATE_TO_GL_2(vertexAttrib3fv, VertexAttrib3fv, WGC3Duint, const WGC3Dfloat*)
-
-DELEGATE_TO_GL_5(vertexAttrib4f, VertexAttrib4f,
- WGC3Duint, WGC3Dfloat, WGC3Dfloat, WGC3Dfloat, WGC3Dfloat)
-
-DELEGATE_TO_GL_2(vertexAttrib4fv, VertexAttrib4fv, WGC3Duint, const WGC3Dfloat*)
-
-void WebGraphicsContext3DInProcessImpl::vertexAttribPointer(
- WGC3Duint index, WGC3Dint size, WGC3Denum type, WGC3Dboolean normalized,
- WGC3Dsizei stride, WGC3Dintptr offset) {
- makeContextCurrent();
- glVertexAttribPointer(index, size, type, normalized, stride,
- reinterpret_cast<void*>(static_cast<intptr_t>(offset)));
-}
-
-DELEGATE_TO_GL_4(viewport, Viewport, WGC3Dint, WGC3Dint, WGC3Dsizei, WGC3Dsizei)
-
-WebGLId WebGraphicsContext3DInProcessImpl::createBuffer() {
- makeContextCurrent();
- GLuint o = 0;
- glGenBuffersARB(1, &o);
- return o;
-}
-
-WebGLId WebGraphicsContext3DInProcessImpl::createFramebuffer() {
- makeContextCurrent();
- GLuint o = 0;
- glGenFramebuffersEXT(1, &o);
- return o;
-}
-
-WebGLId WebGraphicsContext3DInProcessImpl::createProgram() {
- makeContextCurrent();
- return glCreateProgram();
-}
-
-WebGLId WebGraphicsContext3DInProcessImpl::createRenderbuffer() {
- makeContextCurrent();
- GLuint o = 0;
- glGenRenderbuffersEXT(1, &o);
- return o;
-}
-
-WebGLId WebGraphicsContext3DInProcessImpl::createShader(
- WGC3Denum shaderType) {
- makeContextCurrent();
- DCHECK(shaderType == GL_VERTEX_SHADER || shaderType == GL_FRAGMENT_SHADER);
- GLuint shader = glCreateShader(shaderType);
- if (shader) {
- ShaderSourceMap::iterator result = shader_source_map_.find(shader);
- if (result != shader_source_map_.end()) {
- delete result->second;
- shader_source_map_.erase(result);
- }
- shader_source_map_.insert(
- ShaderSourceMap::value_type(shader, new ShaderSourceEntry(shaderType)));
- }
-
- return shader;
-}
-
-WebGLId WebGraphicsContext3DInProcessImpl::createTexture() {
- makeContextCurrent();
- GLuint o = 0;
- glGenTextures(1, &o);
- return o;
-}
-
-void WebGraphicsContext3DInProcessImpl::deleteBuffer(WebGLId buffer) {
- makeContextCurrent();
- glDeleteBuffersARB(1, &buffer);
-}
-
-void WebGraphicsContext3DInProcessImpl::deleteFramebuffer(
- WebGLId framebuffer) {
- makeContextCurrent();
- glDeleteFramebuffersEXT(1, &framebuffer);
-}
-
-void WebGraphicsContext3DInProcessImpl::deleteProgram(WebGLId program) {
- makeContextCurrent();
- glDeleteProgram(program);
-}
-
-void WebGraphicsContext3DInProcessImpl::deleteRenderbuffer(
- WebGLId renderbuffer) {
- makeContextCurrent();
- glDeleteRenderbuffersEXT(1, &renderbuffer);
-}
-
-void WebGraphicsContext3DInProcessImpl::deleteShader(WebGLId shader) {
- makeContextCurrent();
-
- ShaderSourceMap::iterator result = shader_source_map_.find(shader);
- if (result != shader_source_map_.end()) {
- delete result->second;
- shader_source_map_.erase(result);
- }
- glDeleteShader(shader);
-}
-
-void WebGraphicsContext3DInProcessImpl::deleteTexture(WebGLId texture) {
- makeContextCurrent();
- glDeleteTextures(1, &texture);
-}
-
-WGC3Denum WebGraphicsContext3DInProcessImpl::getGraphicsResetStatusARB() {
- // TODO(kbr): this implementation doesn't support lost contexts yet.
- return GL_NO_ERROR;
-}
-
-void WebGraphicsContext3DInProcessImpl::texImageIOSurface2DCHROMIUM(
- WGC3Denum target, WGC3Dint width, WGC3Dint height,
- WGC3Duint ioSurfaceId, WGC3Duint plane) {
-}
-
-DELEGATE_TO_GL_5(texStorage2DEXT, TexStorage2DEXT,
- WGC3Denum, WGC3Dint, WGC3Duint, WGC3Dint, WGC3Dint)
-
-WebGLId WebGraphicsContext3DInProcessImpl::createQueryEXT() {
- makeContextCurrent();
- GLuint o = 0;
- glGenQueriesARB(1, &o);
- return o;
-}
-
-void WebGraphicsContext3DInProcessImpl::deleteQueryEXT(WebGLId query) {
- makeContextCurrent();
- glDeleteQueriesARB(1, &query);
-}
-
-DELEGATE_TO_GL_1R(isQueryEXT, IsQueryARB, WebGLId, WGC3Dboolean)
-DELEGATE_TO_GL_2(beginQueryEXT, BeginQueryARB, WGC3Denum, WebGLId)
-DELEGATE_TO_GL_1(endQueryEXT, EndQueryARB, WGC3Denum)
-DELEGATE_TO_GL_3(getQueryivEXT, GetQueryivARB, WGC3Denum, WGC3Denum, WGC3Dint*)
-DELEGATE_TO_GL_3(getQueryObjectuivEXT, GetQueryObjectuivARB,
- WebGLId, WGC3Denum, WGC3Duint*)
-
-void WebGraphicsContext3DInProcessImpl::copyTextureCHROMIUM(
- WGC3Denum, WGC3Duint, WGC3Duint, WGC3Dint, WGC3Denum, WGC3Denum) {
- NOTIMPLEMENTED();
-}
-
-void WebGraphicsContext3DInProcessImpl::bindTexImage2DCHROMIUM(
- WGC3Denum target, WGC3Dint imageId) {
- NOTIMPLEMENTED();
-}
-
-void WebGraphicsContext3DInProcessImpl::releaseTexImage2DCHROMIUM(
- WGC3Denum target, WGC3Dint imageId) {
- NOTIMPLEMENTED();
-}
-
-void* WebGraphicsContext3DInProcessImpl::mapBufferCHROMIUM(
- WGC3Denum target, WGC3Denum access) {
- return 0;
-}
-
-WGC3Dboolean WebGraphicsContext3DInProcessImpl::unmapBufferCHROMIUM(
- WGC3Denum target) {
- return false;
-}
-
-void WebGraphicsContext3DInProcessImpl::drawBuffersEXT(
- WGC3Dsizei n, const WGC3Denum* bufs) {
- NOTIMPLEMENTED();
-}
-
-GrGLInterface* WebGraphicsContext3DInProcessImpl::onCreateGrGLInterface() {
- return gfx::CreateInProcessSkiaGLBinding();
-}
-
-bool WebGraphicsContext3DInProcessImpl::AngleCreateCompilers() {
- if (!ShInitialize())
- return false;
-
- ShBuiltInResources resources;
- ShInitBuiltInResources(&resources);
- getIntegerv(GL_MAX_VERTEX_ATTRIBS, &resources.MaxVertexAttribs);
- getIntegerv(MAX_VERTEX_UNIFORM_VECTORS, &resources.MaxVertexUniformVectors);
- getIntegerv(MAX_VARYING_VECTORS, &resources.MaxVaryingVectors);
- getIntegerv(GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS,
- &resources.MaxVertexTextureImageUnits);
- getIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS,
- &resources.MaxCombinedTextureImageUnits);
- getIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &resources.MaxTextureImageUnits);
- getIntegerv(MAX_FRAGMENT_UNIFORM_VECTORS,
- &resources.MaxFragmentUniformVectors);
- // Always set to 1 for OpenGL ES.
- resources.MaxDrawBuffers = 1;
-
- resources.OES_standard_derivatives = have_ext_oes_standard_derivatives_;
- resources.OES_EGL_image_external = have_ext_oes_egl_image_external_;
-
- fragment_compiler_ = ShConstructCompiler(
- SH_FRAGMENT_SHADER, SH_WEBGL_SPEC,
- is_gles2_ ? SH_ESSL_OUTPUT : SH_GLSL_OUTPUT, &resources);
- vertex_compiler_ = ShConstructCompiler(
- SH_VERTEX_SHADER, SH_WEBGL_SPEC,
- is_gles2_ ? SH_ESSL_OUTPUT : SH_GLSL_OUTPUT, &resources);
- return (fragment_compiler_ && vertex_compiler_);
-}
-
-void WebGraphicsContext3DInProcessImpl::AngleDestroyCompilers() {
- if (fragment_compiler_) {
- ShDestruct(fragment_compiler_);
- fragment_compiler_ = 0;
- }
- if (vertex_compiler_) {
- ShDestruct(vertex_compiler_);
- vertex_compiler_ = 0;
- }
-}
-
-bool WebGraphicsContext3DInProcessImpl::AngleValidateShaderSource(
- ShaderSourceEntry* entry) {
- entry->is_valid = false;
- entry->translated_source.reset();
- entry->log.reset();
-
- ShHandle compiler = 0;
- switch (entry->type) {
- case GL_FRAGMENT_SHADER:
- compiler = fragment_compiler_;
- break;
- case GL_VERTEX_SHADER:
- compiler = vertex_compiler_;
- break;
- }
- if (!compiler)
- return false;
-
- char* source = entry->source.get();
- if (!ShCompile(compiler, &source, 1, SH_OBJECT_CODE)) {
-#if !defined(ANGLE_SH_VERSION) || ANGLE_SH_VERSION < 108
- int logSize = 0;
-#else
- size_t logSize = 0;
-#endif
- ShGetInfo(compiler, SH_INFO_LOG_LENGTH, &logSize);
- if (logSize > 1) {
- entry->log.reset(new char[logSize]);
- ShGetInfoLog(compiler, entry->log.get());
- }
- return false;
- }
-
-#if !defined(ANGLE_SH_VERSION) || ANGLE_SH_VERSION < 108
- int length = 0;
-#else
- size_t length = 0;
-#endif
- ShGetInfo(compiler, SH_OBJECT_CODE_LENGTH, &length);
- if (length > 1) {
- entry->translated_source.reset(new char[length]);
- ShGetObjectCode(compiler, entry->translated_source.get());
- }
- entry->is_valid = true;
- return true;
-}
-
-} // namespace gpu
-} // namespace webkit
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