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// Copyright (C) 2003-2009 Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#include "Common.h"
#include "GLUtil.h"
#include "Renderer.h"
#include "main.h"
#include "Statistics.h"
#include "RasterFont.h"
#define VSYNC_ENABLED 0
static GLuint s_RenderTarget = 0;
RasterFont* s_pfont = NULL;
void Renderer::Init(SVideoInitialize *_pVideoInitialize)
{
if (!OpenGL_Create(g_VideoInitialize, 640, 480)) // 640x480 will be the default if all else fails
{
g_VideoInitialize.pLog("Renderer::Create failed\n", TRUE);
return;
}
_pVideoInitialize->pPeekMessages = g_VideoInitialize.pPeekMessages;
_pVideoInitialize->pUpdateFPSDisplay = g_VideoInitialize.pUpdateFPSDisplay;
_pVideoInitialize->pWindowHandle = g_VideoInitialize.pWindowHandle;
#if defined(HAVE_X11) && HAVE_X11
_pVideoInitialize->pXWindow = g_VideoInitialize.pXWindow;
#endif
}
void Renderer::Shutdown()
{
glDeleteTextures(1, &s_RenderTarget);
delete s_pfont;
s_pfont = 0;
}
void Renderer::Prepare()
{
OpenGL_MakeCurrent();
// Init extension support.
if (glewInit() != GLEW_OK) {
ERROR_LOG(VIDEO, "glewInit() failed!Does your video card support OpenGL 2.x?");
return;
}
// Handle VSync on/off
#ifdef _WIN32
if (WGLEW_EXT_swap_control)
wglSwapIntervalEXT(VSYNC_ENABLED);
else
ERROR_LOG(VIDEO, "no support for SwapInterval (framerate clamped to monitor refresh rate)Does your video card support OpenGL 2.x?");
#elif defined(HAVE_X11) && HAVE_X11
if (glXSwapIntervalSGI)
glXSwapIntervalSGI(VSYNC_ENABLED);
else
ERROR_LOG(VIDEO, "no support for SwapInterval (framerate clamped to monitor refresh rate)");
#endif
glStencilFunc(GL_ALWAYS, 0, 0);
// used by hw rasterizer if it enables blending and depth test
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDepthFunc(GL_LEQUAL);
glShadeModel(GL_SMOOTH);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glClearDepth(1.0f);
glEnable(GL_SCISSOR_TEST);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4); // 4-byte pixel alignment
glDisable(GL_LIGHTING);
glDisable(GL_BLEND);
glDisable(GL_STENCIL_TEST);
//glDisable(GL_SCISSOR_TEST);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
s_pfont = new RasterFont();
// legacy multitexturing: select texture channel only.
glActiveTexture(GL_TEXTURE0);
glClientActiveTexture(GL_TEXTURE0);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glGenTextures(1, &s_RenderTarget);
glEnable(GL_TEXTURE_RECTANGLE_ARB);
}
void Renderer::RenderText(const char* pstr, int left, int top, u32 color)
{
int nBackbufferWidth = (int)OpenGL_GetBackbufferWidth();
int nBackbufferHeight = (int)OpenGL_GetBackbufferHeight();
glColor4f(((color>>16) & 0xff)/255.0f, ((color>> 8) & 0xff)/255.0f,
((color>> 0) & 0xff)/255.0f, ((color>>24) & 0xFF)/255.0f);
s_pfont->printMultilineText(pstr,
left * 2.0f / (float)nBackbufferWidth - 1,
1 - top * 2.0f / (float)nBackbufferHeight,
0, nBackbufferWidth, nBackbufferHeight);
}
void Renderer::DrawDebugText()
{
char debugtext_buffer[8192];
char *p = debugtext_buffer;
p[0] = 0;
if (g_Config.bShowStats)
{
p+=sprintf(p,"Objects: %i\n",stats.thisFrame.numDrawnObjects);
p+=sprintf(p,"Primatives: %i\n",stats.thisFrame.numPrimatives);
p+=sprintf(p,"Vertices Loaded: %i\n",stats.thisFrame.numVerticesLoaded);
p+=sprintf(p,"Triangles Input: %i\n",stats.thisFrame.numTrianglesIn);
p+=sprintf(p,"Triangles Rejected: %i\n",stats.thisFrame.numTrianglesRejected);
p+=sprintf(p,"Triangles Culled: %i\n",stats.thisFrame.numTrianglesCulled);
p+=sprintf(p,"Triangles Clipped: %i\n",stats.thisFrame.numTrianglesClipped);
p+=sprintf(p,"Triangles Drawn: %i\n",stats.thisFrame.numTrianglesDrawn);
p+=sprintf(p,"Rasterized Pix: %i\n",stats.thisFrame.rasterizedPixels);
p+=sprintf(p,"TEV Pix In: %i\n",stats.thisFrame.tevPixelsIn);
p+=sprintf(p,"TEV Pix Out: %i\n",stats.thisFrame.tevPixelsOut);
}
// Render a shadow, and then the text.
Renderer::RenderText(debugtext_buffer, 21, 21, 0xDD000000);
Renderer::RenderText(debugtext_buffer, 20, 20, 0xFFFFFF00);
}
void Renderer::DrawTexture(u8 *texture, int width, int height)
{
OpenGL_Update(); // just updates the render window position and the backbuffer size
GLsizei glWidth = (GLsizei)OpenGL_GetBackbufferWidth();
GLsizei glHeight = (GLsizei)OpenGL_GetBackbufferHeight();
// Update GLViewPort
glViewport(0, 0, glWidth, glHeight);
glScissor(0, 0, glWidth, glHeight);
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, s_RenderTarget);
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8, (GLsizei)width, (GLsizei)height, 0, GL_RGBA, GL_UNSIGNED_BYTE, texture);
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
GL_REPORT_ERRORD();
GLfloat u_max = (GLfloat)width;
GLfloat v_max = (GLfloat)glHeight;
glBegin(GL_QUADS);
glTexCoord2f(0, v_max); glVertex2f(-1, -1);
glTexCoord2f(0, 0); glVertex2f(-1, 1);
glTexCoord2f(u_max, 0); glVertex2f( 1, 1);
glTexCoord2f(u_max, v_max); glVertex2f( 1, -1);
glEnd();
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
}
void Renderer::SwapBuffer()
{
DrawDebugText();
glFlush();
OpenGL_SwapBuffers();
GL_REPORT_ERRORD();
stats.ResetFrame();
// Clear framebuffer
glClearColor(0, 0, 0, 0);
glClearDepth(1.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
GL_REPORT_ERRORD();
}
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