Rice GLES2 (from mupen64plus-ae) plugin. Compile but doesn't works well on the OpenPa...

[mupen64plus-pandora.git] / source / gles2rice / src / OGLTexture.cpp

diff --git a/source/gles2rice/src/OGLTexture.cpp b/source/gles2rice/src/OGLTexture.cpp
new file mode 100644 (file)
index 0000000..55d6d64
--- /dev/null
+++ b/source/gles2rice/src/OGLTexture.cpp
@@ -0,0 +1,150 @@
+/*
+Copyright (C) 2003 Rice1964
+
+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; either version 2
+of the License, or (at your option) any later version.
+
+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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+*/
+
+#include <stdlib.h>
+
+#include "Config.h"
+#include "Debugger.h"
+#include "OGLDebug.h"
+#include "OGLGraphicsContext.h"
+#include "OGLTexture.h"
+#include "TextureManager.h"
+
+COGLTexture::COGLTexture(uint32 dwWidth, uint32 dwHeight, TextureUsage usage) :
+    CTexture(dwWidth,dwHeight,usage),
+    m_glFmt(GL_RGBA)
+{
+    // FIXME: If usage is AS_RENDER_TARGET, we need to create pbuffer instead of regular texture
+
+    m_dwTextureFmt = TEXTURE_FMT_A8R8G8B8;  // Always use 32bit to load texture
+    glGenTextures( 1, &m_dwTextureName );
+    OPENGL_CHECK_ERRORS;
+
+    // Make the width and height be the power of 2
+    uint32 w;
+    for (w = 1; w < dwWidth; w <<= 1);
+    m_dwCreatedTextureWidth = w;
+    for (w = 1; w < dwHeight; w <<= 1);
+    m_dwCreatedTextureHeight = w;
+    
+    if (dwWidth*dwHeight > 256*256)
+        TRACE4("Large texture: (%d x %d), created as (%d x %d)", 
+            dwWidth, dwHeight,m_dwCreatedTextureWidth,m_dwCreatedTextureHeight);
+    
+    m_fYScale = (float)m_dwCreatedTextureHeight/(float)m_dwHeight;
+    m_fXScale = (float)m_dwCreatedTextureWidth/(float)m_dwWidth;
+
+    m_pTexture = malloc(m_dwCreatedTextureWidth * m_dwCreatedTextureHeight * GetPixelSize());
+
+    switch( options.textureQuality )
+    {
+    case TXT_QUALITY_DEFAULT:
+        if( options.colorQuality == TEXTURE_FMT_A4R4G4B4 ) 
+            m_glFmt = GL_RGBA4;
+        break;
+    case TXT_QUALITY_32BIT:
+        break;
+    case TXT_QUALITY_16BIT:
+            m_glFmt = GL_RGBA4;
+        break;
+    };
+    LOG_TEXTURE(TRACE2("New texture: (%d, %d)", dwWidth, dwHeight));
+}
+
+COGLTexture::~COGLTexture()
+{
+    // FIXME: If usage is AS_RENDER_TARGET, we need to destroy the pbuffer
+
+    glDeleteTextures(1, &m_dwTextureName );
+    OPENGL_CHECK_ERRORS;
+    free(m_pTexture);
+    m_pTexture = NULL;
+    m_dwWidth = 0;
+    m_dwHeight = 0;
+}
+
+bool COGLTexture::StartUpdate(DrawInfo *di)
+{
+    if (m_pTexture == NULL)
+        return false;
+
+    di->dwHeight = (uint16)m_dwHeight;
+    di->dwWidth = (uint16)m_dwWidth;
+    di->dwCreatedHeight = m_dwCreatedTextureHeight;
+    di->dwCreatedWidth = m_dwCreatedTextureWidth;
+    di->lpSurface = m_pTexture;
+    di->lPitch = GetPixelSize()*m_dwCreatedTextureWidth;
+
+    return true;
+}
+
+void COGLTexture::EndUpdate(DrawInfo *di)
+{
+    COGLGraphicsContext *pcontext = (COGLGraphicsContext *)(CGraphicsContext::g_pGraphicsContext); // we need this to check if the GL extension is avaible
+
+    glBindTexture(GL_TEXTURE_2D, m_dwTextureName);
+    OPENGL_CHECK_ERRORS;
+
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    OPENGL_CHECK_ERRORS;
+
+    // mipmap support
+    if(options.mipmapping)
+    {
+        int m_maximumAnistropy = pcontext->getMaxAnisotropicFiltering(); //if getMaxAnisotropicFiltering() return more than 0, so aniso is supported and maxAnisotropicFiltering is set
+
+        // Set Anisotropic filtering (mipmapping have to be activated, aniso filtering is not effective without)
+        if( m_maximumAnistropy )
+        {
+            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, m_maximumAnistropy);
+            OPENGL_CHECK_ERRORS;
+        }
+
+        // Set Mipmap
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
+        OPENGL_CHECK_ERRORS;
+
+#if SDL_VIDEO_OPENGL
+        // Tell to hardware to generate mipmap (himself) when glTexImage2D is called
+        glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
+#elif SDL_VIDEO_OPENGL_ES2
+        glGenerateMipmap(GL_TEXTURE_2D);
+#endif
+        OPENGL_CHECK_ERRORS;
+    }
+    else
+    {
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+        OPENGL_CHECK_ERRORS;
+    }
+
+    // Copy the image data from main memory to video card texture memory
+#if SDL_VIDEO_OPENGL
+    glTexImage2D(GL_TEXTURE_2D, 0, m_glFmt, m_dwCreatedTextureWidth, m_dwCreatedTextureHeight, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, m_pTexture);
+#elif SDL_VIDEO_OPENGL_ES2
+    //GL_BGRA_IMG works on adreno but not inside profiler.
+    glTexImage2D(GL_TEXTURE_2D, 0, m_glFmt, m_dwCreatedTextureWidth, m_dwCreatedTextureHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, m_pTexture);
+#endif
+    OPENGL_CHECK_ERRORS;
+}
+
+
+// Keep in mind that the real texture is not scaled to fix the created opengl texture yet.
+// when the image is need to be scaled, ScaleImageToSurface in CTexure will be called to 
+// scale the image automatically
+