mirror of
https://github.com/libretro/snes9x.git
synced 2024-12-04 07:11:02 +00:00
638 lines
17 KiB
C++
638 lines
17 KiB
C++
#include "COpenGL.h"
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#include "win32_display.h"
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#include "../snes9x.h"
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#include "../gfx.h"
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#include "../display.h"
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#include "wsnes9x.h"
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#include <msxml2.h>
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#include "../filter/hq2x.h"
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#include "../filter/2xsai.h"
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COpenGL::COpenGL(void)
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{
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hDC = NULL;
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hRC = NULL;
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hWnd = NULL;
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drawTexture = 0;
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initDone = false;
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quadTextureSize = 0;
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filterScale = 0;
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afterRenderWidth = 0;
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afterRenderHeight = 0;
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fullscreen = false;
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shaderFunctionsLoaded = false;
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shaderCompiled = false;
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pboFunctionsLoaded = false;
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shaderProgram = 0;
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vertexShader = 0;
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fragmentShader = 0;
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}
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COpenGL::~COpenGL(void)
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{
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DeInitialize();
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}
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bool COpenGL::Initialize(HWND hWnd)
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{
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int pfdIndex;
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RECT windowRect;
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this->hWnd = hWnd;
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this->hDC = GetDC(hWnd);
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PIXELFORMATDESCRIPTOR pfd=
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{
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sizeof(PIXELFORMATDESCRIPTOR), // Size Of This Pixel Format Descriptor
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1, // Version Number
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PFD_DRAW_TO_WINDOW | // Format Must Support Window
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PFD_SUPPORT_OPENGL | // Format Must Support OpenGL
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PFD_DOUBLEBUFFER, // Must Support Double Buffering
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PFD_TYPE_RGBA, // Request An RGBA Format
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16, // Select Our Color Depth
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0, 0, 0, 0, 0, 0, // Color Bits Ignored
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0, // No Alpha Buffer
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0, // Shift Bit Ignored
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0, // No Accumulation Buffer
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0, 0, 0, 0, // Accumulation Bits Ignored
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16, // 16Bit Z-Buffer (Depth Buffer)
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0, // No Stencil Buffer
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0, // No Auxiliary Buffer
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PFD_MAIN_PLANE, // Main Drawing Layer
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0, // Reserved
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0, 0, 0 // Layer Masks Ignored
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};
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PIXELFORMATDESCRIPTOR pfdSel;
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if(!(pfdIndex=ChoosePixelFormat(hDC,&pfd))) {
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DeInitialize();
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return false;
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}
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if(!SetPixelFormat(hDC,pfdIndex,&pfd)) {
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DeInitialize();
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return false;
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}
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if(!(hRC=wglCreateContext(hDC))) {
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DeInitialize();
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return false;
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}
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if(!wglMakeCurrent(hDC,hRC)) {
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DeInitialize();
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return false;
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}
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LoadPBOFunctions();
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wglSwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC)wglGetProcAddress( "wglSwapIntervalEXT" );
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glEnableClientState(GL_VERTEX_ARRAY);
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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glEnable(GL_BLEND);
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glEnable(GL_TEXTURE_2D);
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glMatrixMode (GL_PROJECTION);
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glLoadIdentity ();
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glOrtho (0.0, 1.0, 0.0, 1.0, -1, 1);
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glVertexPointer(2, GL_FLOAT, 0, vertices);
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glTexCoordPointer(2, GL_FLOAT, 0, texcoords);
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GetClientRect(hWnd,&windowRect);
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ChangeRenderSize(windowRect.right,windowRect.bottom);
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glClearColor(0.0f, 0.0f, 0.0f, 0.5f);
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glClear(GL_COLOR_BUFFER_BIT);
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SwapBuffers(hDC);
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initDone = true;
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return true;
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}
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void COpenGL::DeInitialize()
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{
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initDone = false;
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if(shaderCompiled)
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SetShaders(NULL);
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DestroyDrawSurface();
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wglMakeCurrent(NULL,NULL);
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if(hRC) {
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wglDeleteContext(hRC);
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hRC = NULL;
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}
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if(hDC) {
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ReleaseDC(hWnd,hDC);
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hDC = NULL;
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}
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hWnd = NULL;
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initDone = false;
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quadTextureSize = 0;
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filterScale = 0;
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afterRenderWidth = 0;
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afterRenderHeight = 0;
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shaderFunctionsLoaded = false;
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shaderCompiled = false;
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}
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void COpenGL::CreateDrawSurface()
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{
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unsigned int neededSize;
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HRESULT hr;
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//we need at least 512 pixels (SNES_WIDTH * 2) so we can start with that value
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quadTextureSize = 512;
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neededSize = SNES_WIDTH * filterScale;
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while(quadTextureSize < neededSize)
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quadTextureSize *=2;
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if(!drawTexture) {
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glGenTextures(1,&drawTexture);
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glBindTexture(GL_TEXTURE_2D,drawTexture);
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glTexImage2D(GL_TEXTURE_2D,0,GL_RGB,quadTextureSize,quadTextureSize,0,GL_RGB,GL_UNSIGNED_SHORT_5_6_5,NULL);
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if(pboFunctionsLoaded) {
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glGenBuffers(1,&drawBuffer);
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glBindBuffer(GL_PIXEL_UNPACK_BUFFER,drawBuffer);
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glBufferData(GL_PIXEL_UNPACK_BUFFER,quadTextureSize*quadTextureSize*2,NULL,GL_STREAM_DRAW);
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} else {
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noPboBuffer = new BYTE[quadTextureSize*quadTextureSize*2];
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}
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
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}
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ApplyDisplayChanges();
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}
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void COpenGL::DestroyDrawSurface()
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{
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if(drawTexture) {
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glDeleteTextures(1,&drawTexture);
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drawTexture = NULL;
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}
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if(drawBuffer) {
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glDeleteBuffers(1,&drawBuffer);
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drawBuffer = NULL;
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}
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if(noPboBuffer) {
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delete [] noPboBuffer;
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noPboBuffer = NULL;
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}
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}
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bool COpenGL::ChangeDrawSurfaceSize(unsigned int scale)
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{
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filterScale = scale;
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DestroyDrawSurface();
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CreateDrawSurface();
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SetupVertices();
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return true;
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}
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void COpenGL::SetupVertices()
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{
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vertices[0] = 0.0f;
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vertices[1] = 0.0f;
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vertices[2] = 1.0f;
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vertices[3] = 0.0f;
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vertices[4] = 1.0f;
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vertices[5] = 1.0f;
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vertices[6] = 0.0f;
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vertices[7] = 1.0f;
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float tX = (float)afterRenderWidth / (float)quadTextureSize;
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float tY = (float)afterRenderHeight / (float)quadTextureSize;
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texcoords[0] = 0.0f;
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texcoords[1] = tY;
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texcoords[2] = tX;
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texcoords[3] = tY;
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texcoords[4] = tX;
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texcoords[5] = 0.0f;
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texcoords[6] = 0.0f;
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texcoords[7] = 0.0f;
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}
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void COpenGL::Render(SSurface Src)
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{
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SSurface Dst;
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RECT dstRect;
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unsigned int newFilterScale;
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GLenum error;
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if(!initDone) return;
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//create a new draw surface if the filter scale changes
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//at least factor 2 so we can display unscaled hi-res images
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newFilterScale = max(2,max(GetFilterScale(GUI.ScaleHiRes),GetFilterScale(GUI.Scale)));
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if(newFilterScale!=filterScale) {
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ChangeDrawSurfaceSize(newFilterScale);
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}
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if(pboFunctionsLoaded) {
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Dst.Surface = (unsigned char *)glMapBuffer(GL_PIXEL_UNPACK_BUFFER,GL_WRITE_ONLY);
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} else {
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Dst.Surface = noPboBuffer;
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}
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Dst.Height = quadTextureSize;
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Dst.Width = quadTextureSize;
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Dst.Pitch = quadTextureSize * 2;
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RenderMethod (Src, Dst, &dstRect);
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if(!Settings.AutoDisplayMessages) {
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WinSetCustomDisplaySurface((void *)Dst.Surface, Dst.Pitch/2, dstRect.right-dstRect.left, dstRect.bottom-dstRect.top, GetFilterScale(CurrentScale));
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S9xDisplayMessages ((uint16*)Dst.Surface, Dst.Pitch/2, dstRect.right-dstRect.left, dstRect.bottom-dstRect.top, GetFilterScale(CurrentScale));
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}
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if(pboFunctionsLoaded)
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glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER);
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if(afterRenderHeight != dstRect.bottom || afterRenderWidth != dstRect.right) {
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afterRenderHeight = dstRect.bottom;
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afterRenderWidth = dstRect.right;
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ApplyDisplayChanges();
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}
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if (shaderCompiled) {
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GLint location;
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float inputSize[2] = { (float)afterRenderWidth, (float)afterRenderHeight };
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location = glGetUniformLocation (shaderProgram, "rubyInputSize");
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glUniform2fv (location, 1, inputSize);
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RECT windowSize;
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GetClientRect(hWnd,&windowSize);
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float outputSize[2] = {(float)(GUI.Stretch?windowSize.right:afterRenderWidth),
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(float)(GUI.Stretch?windowSize.bottom:afterRenderHeight) };
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location = glGetUniformLocation (shaderProgram, "rubyOutputSize");
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glUniform2fv (location, 1, outputSize);
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float textureSize[2] = { (float)quadTextureSize, (float)quadTextureSize };
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location = glGetUniformLocation (shaderProgram, "rubyTextureSize");
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glUniform2fv (location, 1, textureSize);
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}
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glPixelStorei(GL_UNPACK_ROW_LENGTH, quadTextureSize);
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glTexSubImage2D (GL_TEXTURE_2D,0,0,0,dstRect.right-dstRect.left,dstRect.bottom-dstRect.top,GL_RGB,GL_UNSIGNED_SHORT_5_6_5,pboFunctionsLoaded?0:noPboBuffer);
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glClearColor(0.0f, 0.0f, 0.0f, 0.5f);
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glClear(GL_COLOR_BUFFER_BIT);
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glDrawArrays (GL_QUADS, 0, 4);
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glFlush();
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SwapBuffers(hDC);
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}
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bool COpenGL::ChangeRenderSize(unsigned int newWidth, unsigned int newHeight)
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{
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RECT displayRect=CalculateDisplayRect(afterRenderWidth,afterRenderHeight,newWidth,newHeight);
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glViewport(displayRect.left,newHeight-displayRect.bottom,displayRect.right-displayRect.left,displayRect.bottom-displayRect.top);
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SetupVertices();
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return true;
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}
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bool COpenGL::ApplyDisplayChanges(void)
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{
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if(GUI.BilinearFilter) {
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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} else {
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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}
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if(wglSwapIntervalEXT) {
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wglSwapIntervalEXT(GUI.Vsync?1:0);
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}
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if(GUI.shaderEnabled && GUI.GLSLshaderFileName)
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SetShaders(GUI.GLSLshaderFileName);
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else
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SetShaders(NULL);
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RECT windowSize;
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GetClientRect(hWnd,&windowSize);
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ChangeRenderSize(windowSize.right,windowSize.bottom);
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SetupVertices();
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return true;
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}
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bool COpenGL::SetFullscreen(bool fullscreen)
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{
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if(!initDone)
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return false;
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if(this->fullscreen==fullscreen)
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return true;
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this->fullscreen = fullscreen;
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if(fullscreen) {
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DEVMODE dmScreenSettings={0};
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dmScreenSettings.dmSize=sizeof(dmScreenSettings);
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dmScreenSettings.dmPelsWidth = GUI.FullscreenMode.width;
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dmScreenSettings.dmPelsHeight = GUI.FullscreenMode.height;
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dmScreenSettings.dmBitsPerPel = GUI.FullscreenMode.depth;
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dmScreenSettings.dmDisplayFrequency = GUI.FullscreenMode.rate;
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dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT|DM_DISPLAYFREQUENCY;
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if(ChangeDisplaySettings(&dmScreenSettings,CDS_FULLSCREEN)!=DISP_CHANGE_SUCCESSFUL) {
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this->fullscreen = false;
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return false;
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}
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ChangeRenderSize(GUI.FullscreenMode.width,GUI.FullscreenMode.height);
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} else {
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ChangeDisplaySettings(NULL,0);
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}
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return true;
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}
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void COpenGL::SetSnes9xColorFormat()
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{
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GUI.ScreenDepth = 16;
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GUI.BlueShift = 0;
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GUI.GreenShift = 6;
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GUI.RedShift = 11;
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S9xSetRenderPixelFormat (RGB565);
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S9xBlit2xSaIFilterInit();
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S9xBlitHQ2xFilterInit();
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GUI.NeedDepthConvert = FALSE;
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GUI.DepthConverted = TRUE;
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return;
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}
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void COpenGL::EnumModes(std::vector<dMode> *modeVector)
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{
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DISPLAY_DEVICE dd;
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dd.cb = sizeof(dd);
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DWORD dev = 0;
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int iMode = 0;
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dMode mode;
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while (EnumDisplayDevices(0, dev, &dd, 0))
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{
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if (!(dd.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER) && (dd.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE))
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{
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DEVMODE dm;
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ZeroMemory(&dm, sizeof(dm));
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dm.dmSize = sizeof(dm);
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iMode = 0;
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while(EnumDisplaySettings(dd.DeviceName,iMode,&dm)) {
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if(dm.dmBitsPerPel>=16) {
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mode.width = dm.dmPelsWidth;
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mode.height = dm.dmPelsHeight;
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mode.rate = dm.dmDisplayFrequency;
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mode.depth = dm.dmBitsPerPel;
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modeVector->push_back(mode);
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}
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iMode++;
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}
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}
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dev++;
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}
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}
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bool COpenGL::LoadPBOFunctions()
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{
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if(pboFunctionsLoaded)
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return true;
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const char *extensions = (const char *) glGetString(GL_EXTENSIONS);
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if(extensions && strstr(extensions, "pixel_buffer_object")) {
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glGenBuffers = (PFNGLGENBUFFERSPROC)wglGetProcAddress("glGenBuffers");
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glBindBuffer = (PFNGLBINDBUFFERPROC)wglGetProcAddress("glBindBuffer");
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glBufferData = (PFNGLBUFFERDATAPROC)wglGetProcAddress("glBufferData");
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glDeleteBuffers = (PFNGLDELETEBUFFERSPROC)wglGetProcAddress("glDeleteBuffers");
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glMapBuffer = (PFNGLMAPBUFFERPROC)wglGetProcAddress("glMapBuffer");
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glUnmapBuffer = (PFNGLUNMAPBUFFERPROC)wglGetProcAddress("glUnmapBuffer");
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if(glGenBuffers && glBindBuffer && glBufferData && glDeleteBuffers && glMapBuffer) {
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pboFunctionsLoaded = true;
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}
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}
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return pboFunctionsLoaded;
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}
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bool COpenGL::LoadShaderFunctions()
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{
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if(shaderFunctionsLoaded)
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return true;
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const char *extensions = (const char *) glGetString(GL_EXTENSIONS);
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if(extensions && strstr(extensions, "fragment_program")) {
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glCreateProgram = (PFNGLCREATEPROGRAMPROC) wglGetProcAddress ("glCreateProgram");
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glCreateShader = (PFNGLCREATESHADERPROC) wglGetProcAddress ("glCreateShader");
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glCompileShader = (PFNGLCOMPILESHADERPROC) wglGetProcAddress ("glCompileShader");
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glDeleteShader = (PFNGLDELETESHADERPROC) wglGetProcAddress ("glDeleteShader");
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glDeleteProgram = (PFNGLDELETEPROGRAMPROC) wglGetProcAddress ("glDeleteProgram");
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glAttachShader = (PFNGLATTACHSHADERPROC) wglGetProcAddress ("glAttachShader");
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glDetachShader = (PFNGLDETACHSHADERPROC) wglGetProcAddress ("glDetachShader");
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glLinkProgram = (PFNGLLINKPROGRAMPROC) wglGetProcAddress ("glLinkProgram");
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glUseProgram = (PFNGLUSEPROGRAMPROC) wglGetProcAddress ("glUseProgram");
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glShaderSource = (PFNGLSHADERSOURCEPROC) wglGetProcAddress ("glShaderSource");
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glGetUniformLocation = (PFNGLGETUNIFORMLOCATIONPROC) wglGetProcAddress ("glGetUniformLocation");
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glUniform2fv = (PFNGLUNIFORM2FVPROC) wglGetProcAddress ("glUniform2fv");
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if(glCreateProgram &&
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glCreateShader &&
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glCompileShader &&
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glDeleteShader &&
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glDeleteProgram &&
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glAttachShader &&
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glDetachShader &&
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glLinkProgram &&
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glUseProgram &&
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glShaderSource &&
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glGetUniformLocation &&
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glUniform2fv) {
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shaderFunctionsLoaded = true;
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}
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}
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return shaderFunctionsLoaded;
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}
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char *ReadFileContents(const TCHAR *filename)
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{
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HANDLE hFile;
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DWORD size;
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DWORD bytesRead;
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char *contents;
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hFile = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL,
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OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN , 0);
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if(hFile == INVALID_HANDLE_VALUE){
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return NULL;
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}
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size = GetFileSize(hFile,NULL);
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contents = new char[size+1];
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if(!ReadFile(hFile,contents,size,&bytesRead,NULL)) {
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CloseHandle(hFile);
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delete[] contents;
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return NULL;
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}
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CloseHandle(hFile);
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contents[size] = '\0';
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return contents;
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}
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bool COpenGL::SetShaders(const TCHAR *glslFileName)
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{
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char *fragment=NULL, *vertex=NULL;
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IXMLDOMDocument * pXMLDoc = NULL;
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IXMLDOMElement * pXDE = NULL;
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IXMLDOMNode * pXDN = NULL;
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HRESULT hr;
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BSTR queryString, nodeContent;
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TCHAR errorMsg[MAX_PATH + 50];
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shaderCompiled = false;
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if(fragmentShader) {
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glDetachShader(shaderProgram,fragmentShader);
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glDeleteShader(fragmentShader);
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fragmentShader = 0;
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}
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if(vertexShader) {
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glDetachShader(shaderProgram,vertexShader);
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glDeleteShader(vertexShader);
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vertexShader = 0;
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}
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if(shaderProgram) {
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glUseProgram(0);
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glDeleteProgram(shaderProgram);
|
|
shaderProgram = 0;
|
|
}
|
|
|
|
if(glslFileName==NULL || *glslFileName==TEXT('\0'))
|
|
return true;
|
|
|
|
if(!LoadShaderFunctions()) {
|
|
MessageBox(NULL, TEXT("Unable to load OpenGL shader functions"), TEXT("Shader Loading Error"),
|
|
MB_OK|MB_ICONEXCLAMATION);
|
|
return false;
|
|
}
|
|
|
|
hr = CoCreateInstance(CLSID_DOMDocument,NULL,CLSCTX_INPROC_SERVER,IID_PPV_ARGS(&pXMLDoc));
|
|
|
|
if(FAILED(hr)) {
|
|
MessageBox(NULL, TEXT("Error creating XML Parser"), TEXT("Shader Loading Error"),
|
|
MB_OK|MB_ICONEXCLAMATION);
|
|
return false;
|
|
}
|
|
|
|
VARIANT fileName;
|
|
VARIANT_BOOL ret;
|
|
fileName.vt = VT_BSTR;
|
|
#ifdef UNICODE
|
|
fileName.bstrVal = SysAllocString(glslFileName);
|
|
#else
|
|
wchar_t tempfilename[MAX_PATH];
|
|
MultiByteToWideChar(CP_UTF8,0,glslFileName,-1,tempfilename,MAX_PATH);
|
|
fileName.bstrVal = SysAllocString(tempfilename);
|
|
#endif
|
|
hr = pXMLDoc->load(fileName,&ret);
|
|
SysFreeString(fileName.bstrVal);
|
|
|
|
if(FAILED(hr) || hr==S_FALSE) {
|
|
_stprintf(errorMsg,TEXT("Error loading GLSL shader file:\n%s"),glslFileName);
|
|
MessageBox(NULL, errorMsg, TEXT("Shader Loading Error"), MB_OK|MB_ICONEXCLAMATION);
|
|
pXMLDoc->Release();
|
|
return false;
|
|
}
|
|
|
|
VARIANT attributeValue;
|
|
BSTR attributeName;
|
|
|
|
hr = pXMLDoc->get_documentElement(&pXDE);
|
|
if(FAILED(hr) || hr==S_FALSE) {
|
|
_stprintf(errorMsg,TEXT("Error loading root element from file:\n%s"),glslFileName);
|
|
MessageBox(NULL, errorMsg, TEXT("Shader Loading Error"), MB_OK|MB_ICONEXCLAMATION);
|
|
pXMLDoc->Release();
|
|
return false;
|
|
}
|
|
|
|
attributeName=SysAllocString(L"language");
|
|
pXDE->getAttribute(attributeName,&attributeValue);
|
|
SysFreeString(attributeName);
|
|
pXDE->Release();
|
|
|
|
if(attributeValue.vt!=VT_BSTR || lstrcmpiW(attributeValue.bstrVal,L"glsl")) {
|
|
_stprintf(errorMsg,TEXT("Shader language is <%s>, expected <GLSL> in file:\n%s"),attributeValue.bstrVal,glslFileName);
|
|
MessageBox(NULL, errorMsg, TEXT("Shader Loading Error"), MB_OK|MB_ICONEXCLAMATION);
|
|
if(attributeValue.vt==VT_BSTR) SysFreeString(attributeValue.bstrVal);
|
|
pXMLDoc->Release();
|
|
return false;
|
|
}
|
|
if(attributeValue.vt==VT_BSTR) SysFreeString(attributeValue.bstrVal);
|
|
|
|
queryString=SysAllocString(L"/shader/fragment");
|
|
hr = pXMLDoc->selectSingleNode(queryString,&pXDN);
|
|
SysFreeString(queryString);
|
|
|
|
if(hr == S_OK) {
|
|
hr = pXDN->get_text(&nodeContent);
|
|
if(hr == S_OK) {
|
|
int requiredChars = WideCharToMultiByte(CP_ACP,0,nodeContent,-1,fragment,0,NULL,NULL);
|
|
fragment = new char[requiredChars];
|
|
WideCharToMultiByte(CP_UTF8,0,nodeContent,-1,fragment,requiredChars,NULL,NULL);
|
|
}
|
|
SysFreeString(nodeContent);
|
|
pXDN->Release();
|
|
pXDN = NULL;
|
|
}
|
|
|
|
queryString=SysAllocString(L"/shader/vertex");
|
|
hr = pXMLDoc->selectSingleNode(queryString,&pXDN);
|
|
SysFreeString(queryString);
|
|
|
|
if(hr == S_OK) {
|
|
hr = pXDN->get_text(&nodeContent);
|
|
if(hr == S_OK) {
|
|
int requiredChars = WideCharToMultiByte(CP_ACP,0,nodeContent,-1,vertex,0,NULL,NULL);
|
|
vertex = new char[requiredChars];
|
|
WideCharToMultiByte(CP_UTF8,0,nodeContent,-1,vertex,requiredChars,NULL,NULL);
|
|
}
|
|
SysFreeString(nodeContent);
|
|
pXDN->Release();
|
|
pXDN = NULL;
|
|
}
|
|
|
|
pXMLDoc->Release();
|
|
|
|
if(!fragment && !vertex) {
|
|
_stprintf(errorMsg,TEXT("No vertex or fragment program in file:\n%s"),glslFileName);
|
|
MessageBox(NULL, errorMsg, TEXT("Shader Loading Error"), MB_OK|MB_ICONEXCLAMATION);
|
|
return false;
|
|
}
|
|
|
|
shaderProgram = glCreateProgram ();
|
|
if(vertex) {
|
|
vertexShader = glCreateShader (GL_VERTEX_SHADER);
|
|
glShaderSource(vertexShader, 1, (const GLchar **)&vertex, NULL);
|
|
glCompileShader(vertexShader);
|
|
glAttachShader(shaderProgram, vertexShader);
|
|
delete[] vertex;
|
|
}
|
|
if(fragment) {
|
|
fragmentShader = glCreateShader (GL_FRAGMENT_SHADER);
|
|
glShaderSource(fragmentShader, 1, (const GLchar **)&fragment, NULL);
|
|
glCompileShader(fragmentShader);
|
|
glAttachShader(shaderProgram, fragmentShader);
|
|
delete[] fragment;
|
|
}
|
|
|
|
glLinkProgram(shaderProgram);
|
|
glUseProgram(shaderProgram);
|
|
|
|
shaderCompiled = true;
|
|
|
|
return true;
|
|
}
|