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// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "Device.hpp"
#include "common/Image.hpp"
#include "Texture.h"
#include "Renderer/Renderer.hpp"
#include "Renderer/Clipper.hpp"
#include "Shader/PixelShader.hpp"
#include "Shader/VertexShader.hpp"
#include "Main/Config.hpp"
#include "Main/FrameBuffer.hpp"
#include "Common/Math.hpp"
#include "Common/Configurator.hpp"
#include "Common/Memory.hpp"
#include "Common/Timer.hpp"
#include "../common/debug.h"
namespace es2
{
using namespace sw;
Device::Device(Context *context) : Renderer(context, OpenGL, true), context(context)
{
for(int i = 0; i < RENDERTARGETS; i++)
{
renderTarget[i] = nullptr;
}
depthBuffer = nullptr;
stencilBuffer = nullptr;
setDepthBufferEnable(true);
setFillMode(FILL_SOLID);
setShadingMode(SHADING_GOURAUD);
setDepthWriteEnable(true);
setAlphaTestEnable(false);
setSourceBlendFactor(BLEND_ONE);
setDestBlendFactor(BLEND_ZERO);
setCullMode(CULL_COUNTERCLOCKWISE);
setDepthCompare(DEPTH_LESSEQUAL);
setAlphaReference(127.5f);
setAlphaCompare(ALPHA_ALWAYS);
setAlphaBlendEnable(false);
setFogEnable(false);
setSpecularEnable(false);
setFogColor(0);
setPixelFogMode(FOG_NONE);
setFogStart(0.0f);
setFogEnd(1.0f);
setFogDensity(1.0f);
setRangeFogEnable(false);
setStencilEnable(false);
setStencilFailOperation(OPERATION_KEEP);
setStencilZFailOperation(OPERATION_KEEP);
setStencilPassOperation(OPERATION_KEEP);
setStencilCompare(STENCIL_ALWAYS);
setStencilReference(0);
setStencilMask(0xFFFFFFFF);
setStencilWriteMask(0xFFFFFFFF);
setVertexFogMode(FOG_NONE);
setClipFlags(0);
setPointSize(1.0f);
setPointSizeMin(0.125f);
setPointSizeMax(8192.0f);
setBlendOperation(BLENDOP_ADD);
scissorEnable = false;
setSlopeDepthBias(0.0f);
setTwoSidedStencil(false);
setStencilFailOperationCCW(OPERATION_KEEP);
setStencilZFailOperationCCW(OPERATION_KEEP);
setStencilPassOperationCCW(OPERATION_KEEP);
setStencilCompareCCW(STENCIL_ALWAYS);
setBlendConstant(0xFFFFFFFF);
setWriteSRGB(false);
setDepthBias(0.0f);
setSeparateAlphaBlendEnable(false);
setSourceBlendFactorAlpha(BLEND_ONE);
setDestBlendFactorAlpha(BLEND_ZERO);
setBlendOperationAlpha(BLENDOP_ADD);
setPointSpriteEnable(true);
setColorLogicOpEnabled(false);
setLogicalOperation(LOGICALOP_COPY);
for(int i = 0; i < 16; i++)
{
setAddressingModeU(sw::SAMPLER_PIXEL, i, ADDRESSING_WRAP);
setAddressingModeV(sw::SAMPLER_PIXEL, i, ADDRESSING_WRAP);
setAddressingModeW(sw::SAMPLER_PIXEL, i, ADDRESSING_WRAP);
setBorderColor(sw::SAMPLER_PIXEL, i, 0x00000000);
setTextureFilter(sw::SAMPLER_PIXEL, i, FILTER_POINT);
setMipmapFilter(sw::SAMPLER_PIXEL, i, MIPMAP_NONE);
setMipmapLOD(sw::SAMPLER_PIXEL, i, 0.0f);
}
for(int i = 0; i < 4; i++)
{
setAddressingModeU(sw::SAMPLER_VERTEX, i, ADDRESSING_WRAP);
setAddressingModeV(sw::SAMPLER_VERTEX, i, ADDRESSING_WRAP);
setAddressingModeW(sw::SAMPLER_VERTEX, i, ADDRESSING_WRAP);
setBorderColor(sw::SAMPLER_VERTEX, i, 0x00000000);
setTextureFilter(sw::SAMPLER_VERTEX, i, FILTER_POINT);
setMipmapFilter(sw::SAMPLER_VERTEX, i, MIPMAP_NONE);
setMipmapLOD(sw::SAMPLER_VERTEX, i, 0.0f);
}
for(int i = 0; i < 6; i++)
{
float plane[4] = {0, 0, 0, 0};
setClipPlane(i, plane);
}
pixelShader = nullptr;
vertexShader = nullptr;
pixelShaderDirty = true;
pixelShaderConstantsFDirty = 0;
vertexShaderDirty = true;
vertexShaderConstantsFDirty = 0;
for(int i = 0; i < FRAGMENT_UNIFORM_VECTORS; i++)
{
float zero[4] = {0, 0, 0, 0};
setPixelShaderConstantF(i, zero, 1);
}
for(int i = 0; i < VERTEX_UNIFORM_VECTORS; i++)
{
float zero[4] = {0, 0, 0, 0};
setVertexShaderConstantF(i, zero, 1);
}
}
Device::~Device()
{
for(int i = 0; i < RENDERTARGETS; i++)
{
if(renderTarget[i])
{
renderTarget[i]->release();
renderTarget[i] = nullptr;
}
}
if(depthBuffer)
{
depthBuffer->release();
depthBuffer = nullptr;
}
if(stencilBuffer)
{
stencilBuffer->release();
stencilBuffer = nullptr;
}
delete context;
}
// This object has to be mem aligned
void* Device::operator new(size_t size)
{
ASSERT(size == sizeof(Device)); // This operator can't be called from a derived class
return sw::allocate(sizeof(Device), 16);
}
void Device::operator delete(void * mem)
{
sw::deallocate(mem);
}
void Device::clearColor(float red, float green, float blue, float alpha, unsigned int rgbaMask)
{
if(!rgbaMask)
{
return;
}
float rgba[4];
rgba[0] = red;
rgba[1] = green;
rgba[2] = blue;
rgba[3] = alpha;
for(int i = 0; i < RENDERTARGETS; ++i)
{
if(renderTarget[i])
{
sw::SliceRect clearRect = renderTarget[i]->getRect();
if(scissorEnable)
{
clearRect.clip(scissorRect.x0, scissorRect.y0, scissorRect.x1, scissorRect.y1);
}
int depth = sw::max(renderTarget[i]->getDepth(), 1);
for(clearRect.slice = 0; clearRect.slice < depth; clearRect.slice++)
{
clear(rgba, FORMAT_A32B32G32R32F, renderTarget[i], clearRect, rgbaMask);
}
}
}
}
void Device::clearDepth(float z)
{
if(!depthBuffer)
{
return;
}
z = clamp01(z);
sw::SliceRect clearRect = depthBuffer->getRect();
if(scissorEnable)
{
clearRect.clip(scissorRect.x0, scissorRect.y0, scissorRect.x1, scissorRect.y1);
}
depthBuffer->clearDepth(z, clearRect.x0, clearRect.y0, clearRect.width(), clearRect.height());
}
void Device::clearStencil(unsigned int stencil, unsigned int mask)
{
if(!stencilBuffer)
{
return;
}
sw::SliceRect clearRect = stencilBuffer->getRect();
if(scissorEnable)
{
clearRect.clip(scissorRect.x0, scissorRect.y0, scissorRect.x1, scissorRect.y1);
}
stencilBuffer->clearStencil(stencil, mask, clearRect.x0, clearRect.y0, clearRect.width(), clearRect.height());
}
egl::Image *Device::createDepthStencilSurface(unsigned int width, unsigned int height, sw::Format format, int multiSampleDepth, bool discard)
{
if(height > OUTLINE_RESOLUTION)
{
ERR("Invalid parameters: %dx%d", width, height);
return nullptr;
}
bool lockable = true;
switch(format)
{
// case FORMAT_D15S1:
case FORMAT_D24S8:
case FORMAT_D24X8:
// case FORMAT_D24X4S4:
case FORMAT_D24FS8:
case FORMAT_D32:
case FORMAT_D16:
case FORMAT_D32F:
case FORMAT_D32F_COMPLEMENTARY:
lockable = false;
break;
// case FORMAT_S8_LOCKABLE:
// case FORMAT_D16_LOCKABLE:
case FORMAT_D32F_LOCKABLE:
// case FORMAT_D32_LOCKABLE:
case FORMAT_DF24S8:
case FORMAT_DF16S8:
case FORMAT_D32FS8_TEXTURE:
case FORMAT_D32FS8_SHADOW:
lockable = true;
break;
default:
UNREACHABLE(format);
}
egl::Image *surface = egl::Image::create(width, height, format, multiSampleDepth, lockable);
if(!surface)
{
ERR("Out of memory");
return nullptr;
}
return surface;
}
egl::Image *Device::createRenderTarget(unsigned int width, unsigned int height, sw::Format format, int multiSampleDepth, bool lockable)
{
if(height > OUTLINE_RESOLUTION)
{
ERR("Invalid parameters: %dx%d", width, height);
return nullptr;
}
egl::Image *surface = egl::Image::create(width, height, format, multiSampleDepth, lockable);
if(!surface)
{
ERR("Out of memory");
return nullptr;
}
return surface;
}
void Device::drawIndexedPrimitive(sw::DrawType type, unsigned int indexOffset, unsigned int primitiveCount)
{
if(!bindResources() || !primitiveCount)
{
return;
}
draw(type, indexOffset, primitiveCount);
}
void Device::drawPrimitive(sw::DrawType type, unsigned int primitiveCount)
{
if(!bindResources() || !primitiveCount)
{
return;
}
setIndexBuffer(nullptr);
draw(type, 0, primitiveCount);
}
void Device::setPixelShader(PixelShader *pixelShader)
{
this->pixelShader = pixelShader;
pixelShaderDirty = true;
}
void Device::setPixelShaderConstantF(unsigned int startRegister, const float *constantData, unsigned int count)
{
for(unsigned int i = 0; i < count && startRegister + i < FRAGMENT_UNIFORM_VECTORS; i++)
{
pixelShaderConstantF[startRegister + i][0] = constantData[i * 4 + 0];
pixelShaderConstantF[startRegister + i][1] = constantData[i * 4 + 1];
pixelShaderConstantF[startRegister + i][2] = constantData[i * 4 + 2];
pixelShaderConstantF[startRegister + i][3] = constantData[i * 4 + 3];
}
pixelShaderConstantsFDirty = max(startRegister + count, pixelShaderConstantsFDirty);
pixelShaderDirty = true; // Reload DEF constants
}
void Device::setScissorEnable(bool enable)
{
scissorEnable = enable;
}
void Device::setRenderTarget(int index, egl::Image *renderTarget)
{
if(renderTarget)
{
renderTarget->addRef();
}
if(this->renderTarget[index])
{
this->renderTarget[index]->release();
}
this->renderTarget[index] = renderTarget;
Renderer::setRenderTarget(index, renderTarget);
}
void Device::setDepthBuffer(egl::Image *depthBuffer)
{
if(this->depthBuffer == depthBuffer)
{
return;
}
if(depthBuffer)
{
depthBuffer->addRef();
}
if(this->depthBuffer)
{
this->depthBuffer->release();
}
this->depthBuffer = depthBuffer;
Renderer::setDepthBuffer(depthBuffer);
}
void Device::setStencilBuffer(egl::Image *stencilBuffer)
{
if(this->stencilBuffer == stencilBuffer)
{
return;
}
if(stencilBuffer)
{
stencilBuffer->addRef();
}
if(this->stencilBuffer)
{
this->stencilBuffer->release();
}
this->stencilBuffer = stencilBuffer;
Renderer::setStencilBuffer(stencilBuffer);
}
void Device::setScissorRect(const sw::Rect &rect)
{
scissorRect = rect;
}
void Device::setVertexShader(VertexShader *vertexShader)
{
this->vertexShader = vertexShader;
vertexShaderDirty = true;
}
void Device::setVertexShaderConstantF(unsigned int startRegister, const float *constantData, unsigned int count)
{
for(unsigned int i = 0; i < count && startRegister + i < VERTEX_UNIFORM_VECTORS; i++)
{
vertexShaderConstantF[startRegister + i][0] = constantData[i * 4 + 0];
vertexShaderConstantF[startRegister + i][1] = constantData[i * 4 + 1];
vertexShaderConstantF[startRegister + i][2] = constantData[i * 4 + 2];
vertexShaderConstantF[startRegister + i][3] = constantData[i * 4 + 3];
}
vertexShaderConstantsFDirty = max(startRegister + count, vertexShaderConstantsFDirty);
vertexShaderDirty = true; // Reload DEF constants
}
void Device::setViewport(const Viewport &viewport)
{
this->viewport = viewport;
}
void Device::copyBuffer(sw::byte *sourceBuffer, sw::byte *destBuffer, unsigned int width, unsigned int height, unsigned int sourcePitch, unsigned int destPitch, unsigned int bytes, bool flipX, bool flipY)
{
if(flipX)
{
if(flipY)
{
sourceBuffer += (height - 1) * sourcePitch;
for(unsigned int y = 0; y < height; ++y, sourceBuffer -= sourcePitch, destBuffer += destPitch)
{
sw::byte *srcX = sourceBuffer + (width - 1) * bytes;
sw::byte *dstX = destBuffer;
for(unsigned int x = 0; x < width; ++x, dstX += bytes, srcX -= bytes)
{
memcpy(dstX, srcX, bytes);
}
}
}
else
{
for(unsigned int y = 0; y < height; ++y, sourceBuffer += sourcePitch, destBuffer += destPitch)
{
sw::byte *srcX = sourceBuffer + (width - 1) * bytes;
sw::byte *dstX = destBuffer;
for(unsigned int x = 0; x < width; ++x, dstX += bytes, srcX -= bytes)
{
memcpy(dstX, srcX, bytes);
}
}
}
}
else
{
unsigned int widthB = width * bytes;
if(flipY)
{
sourceBuffer += (height - 1) * sourcePitch;
for(unsigned int y = 0; y < height; ++y, sourceBuffer -= sourcePitch, destBuffer += destPitch)
{
memcpy(destBuffer, sourceBuffer, widthB);
}
}
else
{
for(unsigned int y = 0; y < height; ++y, sourceBuffer += sourcePitch, destBuffer += destPitch)
{
memcpy(destBuffer, sourceBuffer, widthB);
}
}
}
}
bool Device::stretchRect(sw::Surface *source, const sw::SliceRect *sourceRect, sw::Surface *dest, const sw::SliceRect *destRect, unsigned char flags)
{
if(!source || !dest)
{
ERR("Invalid parameters");
return false;
}
int sWidth = source->getWidth();
int sHeight = source->getHeight();
int dWidth = dest->getWidth();
int dHeight = dest->getHeight();
bool flipX = false;
bool flipY = false;
if(sourceRect && destRect)
{
flipX = (sourceRect->x0 < sourceRect->x1) ^ (destRect->x0 < destRect->x1);
flipY = (sourceRect->y0 < sourceRect->y1) ^ (destRect->y0 < destRect->y1);
}
else if(sourceRect)
{
flipX = (sourceRect->x0 > sourceRect->x1);
flipY = (sourceRect->y0 > sourceRect->y1);
}
else if(destRect)
{
flipX = (destRect->x0 > destRect->x1);
flipY = (destRect->y0 > destRect->y1);
}
SliceRect sRect;
SliceRect dRect;
if(sourceRect)
{
sRect = *sourceRect;
if(sRect.x0 > sRect.x1)
{
swap(sRect.x0, sRect.x1);
}
if(sRect.y0 > sRect.y1)
{
swap(sRect.y0, sRect.y1);
}
}
else
{
sRect.y0 = 0;
sRect.x0 = 0;
sRect.y1 = sHeight;
sRect.x1 = sWidth;
}
if(destRect)
{
dRect = *destRect;
if(dRect.x0 > dRect.x1)
{
swap(dRect.x0, dRect.x1);
}
if(dRect.y0 > dRect.y1)
{
swap(dRect.y0, dRect.y1);
}
}
else
{
dRect.y0 = 0;
dRect.x0 = 0;
dRect.y1 = dHeight;
dRect.x1 = dWidth;
}
if(!validRectangle(&sRect, source) || !validRectangle(&dRect, dest))
{
ERR("Invalid parameters");
return false;
}
bool scaling = (sRect.x1 - sRect.x0 != dRect.x1 - dRect.x0) || (sRect.y1 - sRect.y0 != dRect.y1 - dRect.y0);
bool equalFormats = source->getInternalFormat() == dest->getInternalFormat();
bool hasQuadLayout = Surface::hasQuadLayout(source->getInternalFormat()) || Surface::hasQuadLayout(dest->getInternalFormat());
bool fullCopy = (sRect.x0 == 0) && (sRect.y0 == 0) && (dRect.x0 == 0) && (dRect.y0 == 0) &&
(sRect.x1 == sWidth) && (sRect.y1 == sHeight) && (dRect.x1 == dWidth) && (dRect.y0 == dHeight);
bool isDepth = (flags & Device::DEPTH_BUFFER) && egl::Image::isDepth(source->getInternalFormat());
bool isStencil = (flags & Device::STENCIL_BUFFER) && (egl::Image::isDepth(source->getInternalFormat()) || egl::Image::isStencil(source->getInternalFormat()));
bool isColor = (flags & Device::COLOR_BUFFER) == Device::COLOR_BUFFER;
bool alpha0xFF = false;
if((source->getInternalFormat() == FORMAT_A8R8G8B8 && dest->getInternalFormat() == FORMAT_X8R8G8B8) ||
(source->getInternalFormat() == FORMAT_X8R8G8B8 && dest->getInternalFormat() == FORMAT_A8R8G8B8))
{
equalFormats = true;
alpha0xFF = true;
}
if((isDepth || isStencil) && !scaling && equalFormats && (!hasQuadLayout || fullCopy))
{
if(source->hasDepth() && isDepth)
{
sw::byte *sourceBuffer = (sw::byte*)source->lockInternal(sRect.x0, sRect.y0, 0, LOCK_READONLY, PUBLIC);
sw::byte *destBuffer = (sw::byte*)dest->lockInternal(dRect.x0, dRect.y0, 0, LOCK_DISCARD, PUBLIC);
copyBuffer(sourceBuffer, destBuffer, dRect.width(), dRect.height(), source->getInternalPitchB(), dest->getInternalPitchB(), egl::Image::bytes(source->getInternalFormat()), flipX, flipY);
source->unlockInternal();
dest->unlockInternal();
}
if(source->hasStencil() && isStencil)
{
sw::byte *sourceBuffer = (sw::byte*)source->lockStencil(sRect.x0, sRect.y0, 0, PUBLIC);
sw::byte *destBuffer = (sw::byte*)dest->lockStencil(dRect.x0, dRect.y0, 0, PUBLIC);
copyBuffer(sourceBuffer, destBuffer, source->getWidth(), source->getHeight(), source->getStencilPitchB(), dest->getStencilPitchB(), egl::Image::bytes(source->getStencilFormat()), flipX, flipY);
source->unlockStencil();
dest->unlockStencil();
}
}
else if((flags & Device::COLOR_BUFFER) && !scaling && equalFormats && (!hasQuadLayout || fullCopy))
{
unsigned char *sourceBytes = (unsigned char*)source->lockInternal(sRect.x0, sRect.y0, sourceRect->slice, LOCK_READONLY, PUBLIC);
unsigned char *destBytes = (unsigned char*)dest->lockInternal(dRect.x0, dRect.y0, destRect->slice, LOCK_READWRITE, PUBLIC);
unsigned int sourcePitch = source->getInternalPitchB();
unsigned int destPitch = dest->getInternalPitchB();
unsigned int width = dRect.x1 - dRect.x0;
unsigned int height = dRect.y1 - dRect.y0;
copyBuffer(sourceBytes, destBytes, width, height, sourcePitch, destPitch, egl::Image::bytes(source->getInternalFormat()), flipX, flipY);
if(alpha0xFF)
{
for(unsigned int y = 0; y < height; ++y, destBytes += destPitch)
{
for(unsigned int x = 0; x < width; ++x)
{
destBytes[4 * x + 3] = 0xFF;
}
}
}
source->unlockInternal();
dest->unlockInternal();
}
else if(isColor || isDepth || isStencil)
{
if(flipX)
{
swap(dRect.x0, dRect.x1);
}
if(flipY)
{
swap(dRect.y0, dRect.y1);
}
blit(source, sRect, dest, dRect, scaling && (flags & Device::USE_FILTER), isStencil);
}
else
{
UNREACHABLE(false);
}
return true;
}
bool Device::stretchCube(sw::Surface *source, sw::Surface *dest)
{
if(!source || !dest || egl::Image::isDepth(source->getInternalFormat()) || egl::Image::isStencil(source->getInternalFormat()))
{
ERR("Invalid parameters");
return false;
}
int sWidth = source->getWidth();
int sHeight = source->getHeight();
int sDepth = source->getDepth();
int dWidth = dest->getWidth();
int dHeight = dest->getHeight();
int dDepth = dest->getDepth();
bool scaling = (sWidth != dWidth) || (sHeight != dHeight) || (sDepth != dDepth);
bool equalFormats = source->getInternalFormat() == dest->getInternalFormat();
bool alpha0xFF = false;
if((source->getInternalFormat() == FORMAT_A8R8G8B8 && dest->getInternalFormat() == FORMAT_X8R8G8B8) ||
(source->getInternalFormat() == FORMAT_X8R8G8B8 && dest->getInternalFormat() == FORMAT_A8R8G8B8))
{
equalFormats = true;
alpha0xFF = true;
}
if(!scaling && equalFormats)
{
unsigned int sourcePitch = source->getInternalPitchB();
unsigned int destPitch = dest->getInternalPitchB();
unsigned int bytes = dWidth * egl::Image::bytes(source->getInternalFormat());
for(int z = 0; z < dDepth; ++z)
{
unsigned char *sourceBytes = (unsigned char*)source->lockInternal(0, 0, z, LOCK_READONLY, PUBLIC);
unsigned char *destBytes = (unsigned char*)dest->lockInternal(0, 0, z, LOCK_READWRITE, PUBLIC);
for(int y = 0; y < dHeight; ++y)
{
memcpy(destBytes, sourceBytes, bytes);
if(alpha0xFF)
{
for(int x = 0; x < dWidth; ++x)
{
destBytes[4 * x + 3] = 0xFF;
}
}
sourceBytes += sourcePitch;
destBytes += destPitch;
}
}
source->unlockInternal();
dest->unlockInternal();
}
else
{
blit3D(source, dest);
}
return true;
}
bool Device::bindResources()
{
if(!bindViewport())
{
return false; // Zero-area target region
}
bindShaderConstants();
return true;
}
void Device::bindShaderConstants()
{
if(pixelShaderDirty)
{
if(pixelShader)
{
if(pixelShaderConstantsFDirty)
{
Renderer::setPixelShaderConstantF(0, pixelShaderConstantF[0], pixelShaderConstantsFDirty);
}
Renderer::setPixelShader(pixelShader); // Loads shader constants set with DEF
pixelShaderConstantsFDirty = pixelShader->dirtyConstantsF; // Shader DEF'ed constants are dirty
}
else
{
setPixelShader(0);
}
pixelShaderDirty = false;
}
if(vertexShaderDirty)
{
if(vertexShader)
{
if(vertexShaderConstantsFDirty)
{
Renderer::setVertexShaderConstantF(0, vertexShaderConstantF[0], vertexShaderConstantsFDirty);
}
Renderer::setVertexShader(vertexShader); // Loads shader constants set with DEF
vertexShaderConstantsFDirty = vertexShader->dirtyConstantsF; // Shader DEF'ed constants are dirty
}
else
{
setVertexShader(0);
}
vertexShaderDirty = false;
}
}
bool Device::bindViewport()
{
if(viewport.width <= 0 || viewport.height <= 0)
{
return false;
}
if(scissorEnable)
{
if(scissorRect.x0 >= scissorRect.x1 || scissorRect.y0 >= scissorRect.y1)
{
return false;
}
sw::Rect scissor;
scissor.x0 = scissorRect.x0;
scissor.x1 = scissorRect.x1;
scissor.y0 = scissorRect.y0;
scissor.y1 = scissorRect.y1;
setScissor(scissor);
}
else
{
sw::Rect scissor;
scissor.x0 = viewport.x0;
scissor.x1 = viewport.x0 + viewport.width;
scissor.y0 = viewport.y0;
scissor.y1 = viewport.y0 + viewport.height;
for(int i = 0; i < RENDERTARGETS; ++i)
{
if(renderTarget[i])
{
scissor.x0 = max(scissor.x0, 0);
scissor.x1 = min(scissor.x1, renderTarget[i]->getWidth());
scissor.y0 = max(scissor.y0, 0);
scissor.y1 = min(scissor.y1, renderTarget[i]->getHeight());
}
}
if(depthBuffer)
{
scissor.x0 = max(scissor.x0, 0);
scissor.x1 = min(scissor.x1, depthBuffer->getWidth());
scissor.y0 = max(scissor.y0, 0);
scissor.y1 = min(scissor.y1, depthBuffer->getHeight());
}
if(stencilBuffer)
{
scissor.x0 = max(scissor.x0, 0);
scissor.x1 = min(scissor.x1, stencilBuffer->getWidth());
scissor.y0 = max(scissor.y0, 0);
scissor.y1 = min(scissor.y1, stencilBuffer->getHeight());
}
setScissor(scissor);
}
sw::Viewport view;
view.x0 = (float)viewport.x0;
view.y0 = (float)viewport.y0;
view.width = (float)viewport.width;
view.height = (float)viewport.height;
view.minZ = viewport.minZ;
view.maxZ = viewport.maxZ;
Renderer::setViewport(view);
return true;
}
bool Device::validRectangle(const sw::Rect *rect, sw::Surface *surface)
{
if(!rect)
{
return true;
}
if(rect->x1 <= rect->x0 || rect->y1 <= rect->y0)
{
return false;
}
if(rect->x0 < 0 || rect->y0 < 0)
{
return false;
}
if(rect->x1 > (int)surface->getWidth() || rect->y1 > (int)surface->getHeight())
{
return false;
}
return true;
}
void Device::finish()
{
synchronize();
}
}