mirror of
https://gitea.wildfiregames.com/0ad/0ad
synced 2026-06-16 05:13:58 -07:00
f715b73f4f
Commented By: Stan Differential Revision: https://code.wildfiregames.com/D4421 This was SVN commit r26185.
123 lines
3.6 KiB
C++
123 lines
3.6 KiB
C++
/* Copyright (C) 2022 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "precompiled.h"
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#include "DeviceCommandContext.h"
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#include "renderer/backend/gl/Texture.h"
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namespace Renderer
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{
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namespace Backend
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{
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namespace GL
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{
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// static
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std::unique_ptr<CDeviceCommandContext> CDeviceCommandContext::Create()
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{
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std::unique_ptr<CDeviceCommandContext> deviceCommandContext(new CDeviceCommandContext());
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return deviceCommandContext;
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}
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CDeviceCommandContext::CDeviceCommandContext() = default;
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CDeviceCommandContext::~CDeviceCommandContext() = default;
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void CDeviceCommandContext::UploadTexture(
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CTexture* texture, const Format format,
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const void* data, const size_t dataSize,
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const uint32_t level, const uint32_t layer)
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{
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UploadTextureRegion(texture, format, data, dataSize,
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0, 0, texture->GetWidth(), texture->GetHeight(), level, layer);
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}
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void CDeviceCommandContext::UploadTextureRegion(
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CTexture* texture, const Format format,
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const void* data, const size_t dataSize,
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const uint32_t xOffset, const uint32_t yOffset,
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const uint32_t width, const uint32_t height,
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const uint32_t level, const uint32_t layer)
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{
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if (texture->GetType() == CTexture::Type::TEXTURE_2D)
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{
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ENSURE(level == 0 && layer == 0);
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if (texture->GetFormat() == Format::R8G8B8A8 || texture->GetFormat() == Format::A8)
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{
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ENSURE(width > 0 && height > 0);
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ENSURE(texture->GetFormat() == format);
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const size_t bpp = format == Format::R8G8B8A8 ? 4 : 1;
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ENSURE(dataSize == width * height * bpp);
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ENSURE(xOffset + width <= texture->GetWidth());
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ENSURE(yOffset + height <= texture->GetHeight());
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glBindTexture(GL_TEXTURE_2D, texture->GetHandle());
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glTexSubImage2D(GL_TEXTURE_2D, level,
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xOffset, yOffset, width, height,
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format == Format::R8G8B8A8 ? GL_RGBA : GL_ALPHA, GL_UNSIGNED_BYTE, data);
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glBindTexture(GL_TEXTURE_2D, 0);
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ogl_WarnIfError();
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}
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else
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debug_warn("Unsupported format");
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}
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else if (texture->GetType() == CTexture::Type::TEXTURE_CUBE)
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{
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if (texture->GetFormat() == Format::R8G8B8A8)
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{
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ENSURE(texture->GetFormat() == format);
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ENSURE(level == 0 && 0 <= layer && layer < 6);
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ENSURE(xOffset == 0 && yOffset == 0 && texture->GetWidth() == width && texture->GetHeight() == height);
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const size_t bpp = 4;
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ENSURE(dataSize == width * height * bpp);
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// The order of layers should be the following:
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// front, back, top, bottom, right, left
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static const GLenum targets[6] =
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{
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GL_TEXTURE_CUBE_MAP_POSITIVE_X,
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GL_TEXTURE_CUBE_MAP_NEGATIVE_X,
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GL_TEXTURE_CUBE_MAP_POSITIVE_Y,
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GL_TEXTURE_CUBE_MAP_NEGATIVE_Y,
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GL_TEXTURE_CUBE_MAP_POSITIVE_Z,
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GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
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};
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glBindTexture(GL_TEXTURE_CUBE_MAP, texture->GetHandle());
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glTexImage2D(targets[layer], level, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
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glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
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ogl_WarnIfError();
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}
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else
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debug_warn("Unsupported format");
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}
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else
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debug_warn("Unsupported type");
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}
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} // namespace GL
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} // namespace Backend
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} // namespace Renderer
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