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95 lines
3.1 KiB
C++
95 lines
3.1 KiB
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "mojo/gpu/texture_uploader.h"
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#ifndef GL_GLEXT_PROTOTYPES
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#define GL_GLEXT_PROTOTYPES
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#endif
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#include <GLES2/gl2.h>
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#include <GLES2/gl2extmojo.h>
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#include "mojo/services/geometry/public/cpp/geometry_util.h"
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#include "mojo/services/surfaces/public/cpp/surfaces_utils.h"
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namespace mojo {
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mojo::FramePtr TextureUploader::GetUploadFrame(
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base::WeakPtr<mojo::GLContext> context,
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uint32_t resource_id,
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const scoped_ptr<mojo::GLTexture>& texture) {
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if (!context) {
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return mojo::FramePtr();
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}
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mojo::Size size = texture->size();
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mojo::FramePtr frame = mojo::Frame::New();
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frame->resources.resize(0u);
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mojo::Rect bounds;
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bounds.width = size.width;
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bounds.height = size.height;
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mojo::PassPtr pass = mojo::CreateDefaultPass(1, bounds);
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pass->quads.resize(0u);
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pass->shared_quad_states.push_back(mojo::CreateDefaultSQS(size));
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context->MakeCurrent();
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glBindTexture(GL_TEXTURE_2D, texture->texture_id());
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GLbyte mailbox[GL_MAILBOX_SIZE_CHROMIUM];
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glGenMailboxCHROMIUM(mailbox);
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glProduceTextureCHROMIUM(GL_TEXTURE_2D, mailbox);
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GLuint sync_point = glInsertSyncPointCHROMIUM();
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mojo::TransferableResourcePtr resource = mojo::TransferableResource::New();
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resource->id = resource_id;
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resource->format = mojo::RESOURCE_FORMAT_RGBA_8888;
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resource->filter = GL_LINEAR;
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resource->size = size.Clone();
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mojo::MailboxHolderPtr mailbox_holder = mojo::MailboxHolder::New();
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mailbox_holder->mailbox = mojo::Mailbox::New();
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for (int i = 0; i < GL_MAILBOX_SIZE_CHROMIUM; ++i)
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mailbox_holder->mailbox->name.push_back(mailbox[i]);
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mailbox_holder->texture_target = GL_TEXTURE_2D;
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mailbox_holder->sync_point = sync_point;
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resource->mailbox_holder = mailbox_holder.Pass();
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resource->is_repeated = false;
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resource->is_software = false;
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mojo::QuadPtr quad = mojo::Quad::New();
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quad->material = mojo::MATERIAL_TEXTURE_CONTENT;
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mojo::RectPtr rect = mojo::Rect::New();
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rect->width = size.width;
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rect->height = size.height;
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quad->rect = rect.Clone();
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quad->opaque_rect = rect.Clone();
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quad->visible_rect = rect.Clone();
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quad->needs_blending = true;
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quad->shared_quad_state_index = 0u;
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mojo::TextureQuadStatePtr texture_state = mojo::TextureQuadState::New();
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texture_state->resource_id = resource->id;
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texture_state->premultiplied_alpha = true;
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texture_state->uv_top_left = mojo::PointF::New();
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texture_state->uv_bottom_right = mojo::PointF::New();
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texture_state->uv_bottom_right->x = 1.f;
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texture_state->uv_bottom_right->y = 1.f;
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texture_state->background_color = mojo::Color::New();
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texture_state->background_color->rgba = 0;
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for (int i = 0; i < 4; ++i)
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texture_state->vertex_opacity.push_back(1.f);
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texture_state->flipped = false;
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frame->resources.push_back(resource.Pass());
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quad->texture_quad_state = texture_state.Pass();
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pass->quads.push_back(quad.Pass());
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frame->passes.push_back(pass.Pass());
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return frame.Pass();
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}
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} // namespace mojo
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