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RPRendererDMA.cpp
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RPRendererDMA.cpp
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/*
* Copyright (C) 2017-2018 Team Kodi
* This file is part of Kodi - https://kodi.tv
*
* SPDX-License-Identifier: GPL-2.0-or-later
* See LICENSES/README.md for more information.
*/
#include "RPRendererDMA.h"
#include "cores/RetroPlayer/buffers/RenderBufferDMA.h"
#include "cores/RetroPlayer/buffers/RenderBufferPoolDMA.h"
#include "cores/RetroPlayer/rendering/RenderContext.h"
#include "cores/RetroPlayer/rendering/RenderVideoSettings.h"
#include "utils/BufferObjectFactory.h"
#include "utils/GLUtils.h"
#include <cassert>
#include <cstddef>
using namespace KODI;
using namespace RETRO;
std::string CRendererFactoryDMA::RenderSystemName() const
{
return "DMA";
}
CRPBaseRenderer* CRendererFactoryDMA::CreateRenderer(const CRenderSettings& settings,
CRenderContext& context,
std::shared_ptr<IRenderBufferPool> bufferPool)
{
return new CRPRendererDMA(settings, context, std::move(bufferPool));
}
RenderBufferPoolVector CRendererFactoryDMA::CreateBufferPools(CRenderContext& context)
{
if (!CBufferObjectFactory::CreateBufferObject())
return {};
return {std::make_shared<CRenderBufferPoolDMA>(context)};
}
CRPRendererDMA::CRPRendererDMA(const CRenderSettings& renderSettings,
CRenderContext& context,
std::shared_ptr<IRenderBufferPool> bufferPool)
: CRPRendererOpenGLES(renderSettings, context, std::move(bufferPool))
{
}
void CRPRendererDMA::Render(uint8_t alpha)
{
auto renderBuffer = static_cast<CRenderBufferDMA*>(m_renderBuffer);
assert(renderBuffer != nullptr);
CRect rect = m_sourceRect;
rect.x1 /= renderBuffer->GetWidth();
rect.x2 /= renderBuffer->GetWidth();
rect.y1 /= renderBuffer->GetHeight();
rect.y2 /= renderBuffer->GetHeight();
const uint32_t color = (alpha << 24) | 0xFFFFFF;
glBindTexture(m_textureTarget, renderBuffer->TextureID());
GLint filter = GL_NEAREST;
if (GetRenderSettings().VideoSettings().GetScalingMethod() == SCALINGMETHOD::LINEAR)
filter = GL_LINEAR;
glTexParameteri(m_textureTarget, GL_TEXTURE_MAG_FILTER, filter);
glTexParameteri(m_textureTarget, GL_TEXTURE_MIN_FILTER, filter);
glTexParameteri(m_textureTarget, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(m_textureTarget, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
m_context.EnableGUIShader(GL_SHADER_METHOD::TEXTURE_NOALPHA);
GLubyte colour[4];
GLubyte idx[4] = {0, 1, 3, 2}; // Determines order of triangle strip
struct PackedVertex
{
float x, y, z;
float u1, v1;
} vertex[4];
GLint vertLoc = m_context.GUIShaderGetPos();
GLint loc = m_context.GUIShaderGetCoord0();
GLint uniColLoc = m_context.GUIShaderGetUniCol();
// Setup color values
colour[0] = static_cast<GLubyte>(GET_R(color));
colour[1] = static_cast<GLubyte>(GET_G(color));
colour[2] = static_cast<GLubyte>(GET_B(color));
colour[3] = static_cast<GLubyte>(GET_A(color));
for (unsigned int i = 0; i < 4; i++)
{
// Setup vertex position values
vertex[i].x = m_rotatedDestCoords[i].x;
vertex[i].y = m_rotatedDestCoords[i].y;
vertex[i].z = 0.0f;
}
// Setup texture coordinates
vertex[0].u1 = vertex[3].u1 = rect.x1;
vertex[0].v1 = vertex[1].v1 = rect.y1;
vertex[1].u1 = vertex[2].u1 = rect.x2;
vertex[2].v1 = vertex[3].v1 = rect.y2;
glBindBuffer(GL_ARRAY_BUFFER, m_mainVertexVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(PackedVertex)*4, &vertex[0], GL_STATIC_DRAW);
glVertexAttribPointer(vertLoc, 3, GL_FLOAT, 0, sizeof(PackedVertex), reinterpret_cast<const GLuint*>(offsetof(PackedVertex, x)));
glVertexAttribPointer(loc, 2, GL_FLOAT, 0, sizeof(PackedVertex), reinterpret_cast<const GLuint*>(offsetof(PackedVertex, u1)));
glEnableVertexAttribArray(vertLoc);
glEnableVertexAttribArray(loc);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_mainIndexVBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(GLubyte)*4, idx, GL_STATIC_DRAW);
glUniform4f(uniColLoc,(colour[0] / 255.0f), (colour[1] / 255.0f), (colour[2] / 255.0f), (colour[3] / 255.0f));
glDrawElements(GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_BYTE, 0);
glDisableVertexAttribArray(vertLoc);
glDisableVertexAttribArray(loc);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
m_context.DisableGUIShader();
}