diff options
Diffstat (limited to 'sys/glsink/regcomb_yuvrgb.c')
| -rw-r--r-- | sys/glsink/regcomb_yuvrgb.c | 349 |
1 files changed, 0 insertions, 349 deletions
diff --git a/sys/glsink/regcomb_yuvrgb.c b/sys/glsink/regcomb_yuvrgb.c deleted file mode 100644 index 0c953c6f..00000000 --- a/sys/glsink/regcomb_yuvrgb.c +++ /dev/null @@ -1,349 +0,0 @@ -// these includes don't do a lot in Linux, they are more needed in Win32 (for the OpenGL function call pointers) -// but they are used at least for checking if the necessary extensions are present -#include "ARB_multitexture.h" -#include "NV_register_combiners.h" -#include "EXT_paletted_texture.h" - -/*********************************************************************************************** - INTERESTING PART: * - handles initialization of the Nvidia register combiners for YUV->RGB conversion. - This code was created by Jens Schneider <schneider@glhint.de> - ***********************************************************************************************/ - -GLuint Yhandle; -GLuint Uhandle; -GLuint Vhandle; -unsigned char *YPlane; -unsigned char *UPlane; -unsigned char *VPlane; - -// YUV 4:2:2 example -unsigned int Ywidth=512, Yheight=512; -unsigned int UVwidth=256, UVheight=512; - -int tex_xsize, tex_ysize; - -void GenerateRGBTables(unsigned char *Ytable, // Y-palette - unsigned char *Utable, // U-palette - unsigned char *Vtable, // V-palette - float *bias, // bias (fourth vector to be added) - float *Uscale, // scaling color for U - float *Vscale) // scaling color for V -{ - int i; - const float mat[9]= { // the modified YUV->RGB matrix - +1.130469478f,-0.058755723f,+1.596026304f, - +1.130469478f,-0.450515935f,-0.812967512f, - +1.130469478f,+1.958477882f, 0.0f - }; - #define COMPRESS(a)(0.5f*(a)+128.0f) // counter-piece to EXPAND_NORMAL - #define fCOMPRESS(a) (0.5f*(a)+0.5f); - #define XCLAMP(a) ((a)<0.0f ? 0.0f : ((a)>255.0f ? 255.0f : (a))) // should not be necessary, but what do you know. - bias[0]=fCOMPRESS(-0.842580964f); - bias[1]=fCOMPRESS(+0.563287723f); - bias[2]=fCOMPRESS(-1.0f); - bias[3]=0.0f; - Uscale[0]=8.0f/255.0f; - Uscale[1]=60.0f/255.0f; - Uscale[2]=250.0f/255.0f; - Uscale[3]=0.0f; - Vscale[0]=204.0f/255.0f; - Vscale[1]=105.0f/255.0f; - Vscale[2]=0.5f; - Vscale[3]=0.0f; - for (i=0; i<256; i++) { - // Y-table holds unsigned values - Ytable[3*i ]=(unsigned char)XCLAMP(mat[0]*(float)i); // R - Ytable[3*i+1]=(unsigned char)XCLAMP(mat[3]*(float)i); // G - Ytable[3*i+2]=(unsigned char)XCLAMP(mat[6]*(float)i); // B - // U-table holds signed values - Utable[3*i ]=(unsigned char)XCLAMP(COMPRESS(255.0f/ 16.0f*mat[1]*(float)i)); // R - Utable[3*i+1]=(unsigned char)XCLAMP(COMPRESS(255.0f/120.0f*mat[4]*(float)i)); // G - Utable[3*i+2]=(unsigned char)XCLAMP(COMPRESS(255.0f/500.0f*mat[7]*(float)i)); // B - // V-table holds signed values - Vtable[3*i ]=(unsigned char)XCLAMP(COMPRESS(255.0f/408.0f*mat[2]*(float)i)); // R - Vtable[3*i+1]=(unsigned char)XCLAMP(COMPRESS(255.0f/210.0f*mat[5]*(float)i)); // G - Vtable[3*i+2]=(unsigned char)(128.0f-14.0f); // G constant - } - #undef fCOMPRESS - #undef COMPRESS - #undef XCLAMP -} - - -// Sets the constants. Call once prior to rendering. -void SetConsts(float *bias, float *Uscale, float *Vscale) { - glEnable(GL_REGISTER_COMBINERS_NV); - glColor3fv(bias); - //printf("%f %f %f\n",bias[0],bias[1],bias[2]); - glCombinerParameterfvNV(GL_CONSTANT_COLOR0_NV,Uscale); - glCombinerParameterfvNV(GL_CONSTANT_COLOR1_NV,Vscale); -} - -/* - * SOFTWARE PATH - */ - -inline void map_EXPAND_NORMAL(float *v) { - v[0]=2.0f*v[0]-1.0f; - v[1]=2.0f*v[1]-1.0f; - v[2]=2.0f*v[2]-1.0f; -} - -inline void map_UNSIGNED_INVERT(float *v) { - v[0]=1.0f-v[0]; - v[1]=1.0f-v[1]; - v[2]=1.0f-v[2]; -} - -inline void map_UNSIGNED_IDENTITY(float *v) { - v[0]=(v[0]<0.0f ? 0.0f : v[0]); - v[1]=(v[1]<0.0f ? 0.0f : v[1]); - v[2]=(v[2]<0.0f ? 0.0f : v[2]); -} - -inline void map_SIGNED_IDENTITY(float *v) { -} - -inline void omap_SCALE_BY_TWO(float *v) { - v[0]*=2.0f; - v[1]*=2.0f; - v[2]*=2.0f; -} - -inline void omap_SCALE_BY_ONE_HALF(float *v) { - v[0]*=0.5f; - v[1]*=0.5f; - v[2]*=0.5f; -} - -inline void omap_RANGE(float *v) { - v[0]=(v[0]<-1.0f ? -1.0f : (v[0]>1.0f ? 1.0f : v[0])); - v[1]=(v[1]<-1.0f ? -1.0f : (v[1]>1.0f ? 1.0f : v[1])); - v[2]=(v[2]<-1.0f ? -1.0f : (v[2]>1.0f ? 1.0f : v[2])); -} - - -inline void omap_CLAMP_01(float *v) { - v[0]=(v[0]<0.0f ? 0.0f : (v[0]>1.0f ? 1.0f : v[0])); - v[1]=(v[1]<0.0f ? 0.0f : (v[1]>1.0f ? 1.0f : v[1])); - v[2]=(v[2]<0.0f ? 0.0f : (v[2]>1.0f ? 1.0f : v[2])); -} - -void PerformSWCombiner(unsigned char *Result, - unsigned char *tex0, - unsigned char *tex1, - unsigned char *tex2, - float *COLOR0, - float *CONST0, - float *CONST1 - ) -{ - float SPARE0[3]; - float SPARE1[3]; - float A[3],B[3],C[3],D[3]; - float TEX0[3],TEX1[3],TEX2[3]; - float ZERO[3]={0.0f,0.0f,0.0f}; - - TEX0[0]=(float)tex0[0]/255.0f; - TEX0[1]=(float)tex0[1]/255.0f; - TEX0[2]=(float)tex0[2]/255.0f; - - TEX1[0]=(float)tex1[0]/255.0f; - TEX1[1]=(float)tex1[1]/255.0f; - TEX1[2]=(float)tex1[2]/255.0f; - - TEX2[0]=(float)tex2[0]/255.0f; - TEX2[1]=(float)tex2[1]/255.0f; - TEX2[2]=(float)tex2[2]/255.0f; - - // Combiner Stage 0: - memcpy(A,TEX0,3*sizeof(float)); map_UNSIGNED_IDENTITY(A); - memcpy(B,ZERO,3*sizeof(float)); map_UNSIGNED_INVERT(B); - memcpy(C,COLOR0,3*sizeof(float)); map_EXPAND_NORMAL(C); - memcpy(D,ZERO,3*sizeof(float)); map_UNSIGNED_INVERT(D); - SPARE0[0]=A[0]*B[0]+C[0]*D[0]; - SPARE0[1]=A[1]*B[1]+C[1]*D[1]; - SPARE0[2]=A[2]*B[2]+C[2]*D[2]; - omap_SCALE_BY_ONE_HALF(SPARE0); - omap_RANGE(SPARE0); - - // Combiner Stage 1: - memcpy(A,TEX1,3*sizeof(float)); map_EXPAND_NORMAL(A); - memcpy(B,CONST0,3*sizeof(float)); map_UNSIGNED_IDENTITY(B); - memcpy(C,TEX2,3*sizeof(float)); map_EXPAND_NORMAL(C); - memcpy(D,CONST1,3*sizeof(float)); map_UNSIGNED_IDENTITY(D); - SPARE1[0]=A[0]*B[0]+C[0]*D[0]; - SPARE1[1]=A[1]*B[1]+C[1]*D[1]; - SPARE1[2]=A[2]*B[2]+C[2]*D[2]; - omap_RANGE(SPARE1); - - // Combiner Stage 2: - memcpy(A,SPARE0,3*sizeof(float)); map_SIGNED_IDENTITY(A); - memcpy(B,ZERO,3*sizeof(float)); map_UNSIGNED_INVERT(B); - memcpy(C,SPARE1,3*sizeof(float)); map_SIGNED_IDENTITY(C); - memcpy(D,ZERO,3*sizeof(float)); map_UNSIGNED_INVERT(D); - SPARE0[0]=A[0]*B[0]+C[0]*D[0]; - SPARE0[1]=A[1]*B[1]+C[1]*D[1]; - SPARE0[2]=A[2]*B[2]+C[2]*D[2]; - omap_SCALE_BY_TWO(SPARE0); - omap_RANGE(SPARE0); - - // Final Combiner Stage: - memcpy(A,ZERO,3*sizeof(float)); map_UNSIGNED_INVERT(A); - memcpy(B,SPARE0,3*sizeof(float)); map_UNSIGNED_IDENTITY(B); - memcpy(C,ZERO,3*sizeof(float)); map_UNSIGNED_IDENTITY(C); - memcpy(D,ZERO,3*sizeof(float)); map_UNSIGNED_IDENTITY(D); - SPARE0[0]=A[0]*B[0]+(1.0f-A[0])*C[0]+D[0]; - SPARE0[1]=A[1]*B[1]+(1.0f-A[1])*C[1]+D[1]; - SPARE0[2]=A[2]*B[2]+(1.0f-A[2])*C[2]+D[2]; - omap_CLAMP_01(SPARE0); - Result[0]=(unsigned char)(SPARE0[0]*255.0f); - Result[1]=(unsigned char)(SPARE0[1]*255.0f); - Result[2]=(unsigned char)(SPARE0[2]*255.0f); -} - -// Sets up the register combiners. Call once prior to rendering -void SetupCombiners(void) -{ - glCombinerParameteriNV(GL_NUM_GENERAL_COMBINERS_NV,3); - // Combiner Stage 0: th. OK - glCombinerInputNV (GL_COMBINER0_NV,GL_RGB,GL_VARIABLE_A_NV,GL_TEXTURE0_ARB, GL_UNSIGNED_IDENTITY_NV,GL_RGB); - glCombinerInputNV (GL_COMBINER0_NV,GL_RGB,GL_VARIABLE_B_NV,GL_ZERO, GL_UNSIGNED_INVERT_NV, GL_RGB); - glCombinerInputNV (GL_COMBINER0_NV,GL_RGB,GL_VARIABLE_C_NV,GL_PRIMARY_COLOR_NV,GL_EXPAND_NORMAL_NV, GL_RGB); - glCombinerInputNV (GL_COMBINER0_NV,GL_RGB,GL_VARIABLE_D_NV,GL_ZERO, GL_UNSIGNED_INVERT_NV, GL_RGB); - glCombinerOutputNV(GL_COMBINER0_NV,GL_RGB,GL_DISCARD_NV,GL_DISCARD_NV,GL_SPARE0_NV,GL_SCALE_BY_ONE_HALF_NV,GL_NONE,GL_FALSE,GL_FALSE,GL_FALSE); - // Combiner Stage 1: th. OK - glCombinerInputNV (GL_COMBINER1_NV,GL_RGB,GL_VARIABLE_A_NV,GL_TEXTURE1_ARB, GL_EXPAND_NORMAL_NV, GL_RGB); - glCombinerInputNV (GL_COMBINER1_NV,GL_RGB,GL_VARIABLE_B_NV,GL_CONSTANT_COLOR0_NV,GL_UNSIGNED_IDENTITY_NV,GL_RGB); - glCombinerInputNV (GL_COMBINER1_NV,GL_RGB,GL_VARIABLE_C_NV,GL_TEXTURE2_ARB, GL_EXPAND_NORMAL_NV, GL_RGB); - glCombinerInputNV (GL_COMBINER1_NV,GL_RGB,GL_VARIABLE_D_NV,GL_CONSTANT_COLOR1_NV,GL_UNSIGNED_IDENTITY_NV,GL_RGB); - glCombinerOutputNV(GL_COMBINER1_NV,GL_RGB,GL_DISCARD_NV,GL_DISCARD_NV,GL_SPARE1_NV,GL_NONE,GL_NONE,GL_FALSE,GL_FALSE,GL_FALSE); - // Combiner Stage 2: th. OK - glCombinerInputNV (GL_COMBINER2_NV,GL_RGB,GL_VARIABLE_A_NV,GL_SPARE0_NV, GL_SIGNED_IDENTITY_NV, GL_RGB); - glCombinerInputNV (GL_COMBINER2_NV,GL_RGB,GL_VARIABLE_B_NV,GL_ZERO, GL_UNSIGNED_INVERT_NV, GL_RGB); - glCombinerInputNV (GL_COMBINER2_NV,GL_RGB,GL_VARIABLE_C_NV,GL_SPARE1_NV, GL_SIGNED_IDENTITY_NV, GL_RGB); - glCombinerInputNV (GL_COMBINER2_NV,GL_RGB,GL_VARIABLE_D_NV,GL_ZERO, GL_UNSIGNED_INVERT_NV, GL_RGB); - glCombinerOutputNV(GL_COMBINER2_NV,GL_RGB,GL_DISCARD_NV,GL_DISCARD_NV,GL_SPARE0_NV,GL_SCALE_BY_TWO_NV,GL_NONE,GL_FALSE,GL_FALSE,GL_FALSE); - // Final Sage: th. OK - glFinalCombinerInputNV(GL_VARIABLE_A_NV,GL_ZERO, GL_UNSIGNED_INVERT_NV, GL_RGB); - glFinalCombinerInputNV(GL_VARIABLE_B_NV,GL_SPARE0_NV,GL_UNSIGNED_IDENTITY_NV,GL_RGB); - glFinalCombinerInputNV(GL_VARIABLE_C_NV,GL_ZERO, GL_UNSIGNED_IDENTITY_NV,GL_RGB); - glFinalCombinerInputNV(GL_VARIABLE_D_NV,GL_ZERO, GL_UNSIGNED_IDENTITY_NV,GL_RGB); - glFinalCombinerInputNV(GL_VARIABLE_G_NV,GL_ZERO, GL_UNSIGNED_INVERT_NV, GL_ALPHA); -} - - -unsigned int PowerOfTwo(unsigned int i) { - unsigned int bitsum=0; - unsigned int shifts=0; - unsigned int j=(unsigned int)i; - // Check wether i is a power of two - may contain at most one set bit - do { - bitsum+=j&1; - j=j>>1; - ++shifts; - } while (j>0); - if (bitsum==1) return i; - else return (1<<shifts); -} - - -// Initializes textures. Call once prior to rendering -void InitYUVPlanes(GLuint *Yhandle, GLuint *Uhandle, GLuint *Vhandle, - unsigned int Ywidth, unsigned int Yheight, - unsigned int UVwidth, unsigned int UVheight, - GLenum filter, // filter should be either GL_NEAREST or GL_LINEAR. Test this! - unsigned char* Ypal, unsigned char *Upal, unsigned char *Vpal) -{ - glGenTextures(1,Yhandle); - glGenTextures(1,Uhandle); - glGenTextures(1,Vhandle); - glBindTexture(GL_TEXTURE_2D,(*Yhandle)); -#ifdef _WIN32 - glColorTableEXT(GL_TEXTURE_2D,GL_RGB8,256,GL_RGB,GL_UNSIGNED_BYTE,Ypal); -#else // Hopefully Linux - glColorTable(GL_TEXTURE_2D,GL_RGB8,256,GL_RGB,GL_UNSIGNED_BYTE,Ypal); -#endif - glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,filter); - glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,filter); - glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_CLAMP); - glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_CLAMP); - tex_xsize = PowerOfTwo(Ywidth); - tex_ysize = PowerOfTwo(Yheight); - glTexImage2D(GL_TEXTURE_2D,0,GL_COLOR_INDEX8_EXT,PowerOfTwo(Ywidth),PowerOfTwo(Yheight),0,GL_COLOR_INDEX,GL_UNSIGNED_BYTE,NULL); - - glBindTexture(GL_TEXTURE_2D,(*Uhandle)); -#ifdef _WIN32 - glColorTableEXT(GL_TEXTURE_2D,GL_RGB8,256,GL_RGB,GL_UNSIGNED_BYTE,Upal); -#else // Hopefully Linux - glColorTable(GL_TEXTURE_2D,GL_RGB8,256,GL_RGB,GL_UNSIGNED_BYTE,Upal); -#endif - glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,filter); - glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,filter); - glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_CLAMP); - glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_CLAMP); - glTexImage2D(GL_TEXTURE_2D,0,GL_COLOR_INDEX8_EXT,PowerOfTwo(UVwidth),PowerOfTwo(UVheight),0,GL_COLOR_INDEX,GL_UNSIGNED_BYTE,NULL); - - glBindTexture(GL_TEXTURE_2D,(*Vhandle)); -#ifdef _WIN32 - glColorTableEXT(GL_TEXTURE_2D,GL_RGB8,256,GL_RGB,GL_UNSIGNED_BYTE,Vpal); -#else // Hopefully Linux - glColorTable(GL_TEXTURE_2D,GL_RGB8,256,GL_RGB,GL_UNSIGNED_BYTE,Vpal); -#endif - glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,filter); - glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,filter); - glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_CLAMP); - glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_CLAMP); - glTexImage2D(GL_TEXTURE_2D,0,GL_COLOR_INDEX8_EXT,PowerOfTwo(UVwidth),PowerOfTwo(UVheight),0,GL_COLOR_INDEX,GL_UNSIGNED_BYTE,NULL); -} - -void LoadYUVPlanes(GLuint Yhandle, GLuint Uhandle, GLuint Vhandle, - unsigned int Ywidth, unsigned int Yheight, - unsigned int UVwidth, unsigned int UVheight, - unsigned char *Ydata, - unsigned char *Udata, - unsigned char *Vdata) -{ - glActiveTextureARB(GL_TEXTURE0_ARB); - glBindTexture(GL_TEXTURE_2D,Yhandle); - glTexSubImage2D(GL_TEXTURE_2D,0,0,0,Ywidth,Yheight,GL_COLOR_INDEX,GL_UNSIGNED_BYTE,Ydata); - glEnable(GL_TEXTURE_2D); - - glActiveTextureARB(GL_TEXTURE1_ARB); - glBindTexture(GL_TEXTURE_2D,Uhandle); - glTexSubImage2D(GL_TEXTURE_2D,0,0,0,UVwidth,UVheight,GL_COLOR_INDEX,GL_UNSIGNED_BYTE,Udata); - glEnable(GL_TEXTURE_2D); - - glActiveTextureARB(GL_TEXTURE2_ARB); - glBindTexture(GL_TEXTURE_2D,Vhandle); - glTexSubImage2D(GL_TEXTURE_2D,0,0,0,UVwidth,UVheight,GL_COLOR_INDEX,GL_UNSIGNED_BYTE,Vdata); - glEnable(GL_TEXTURE_2D); -} - - -void Initialize_Backend(unsigned int Ywidth, unsigned int Yheight, unsigned int UVwidth, unsigned int UVheight, GLenum filter) -{ - printf("Reinitializing register combiner backend with res %d x %d!\n", Ywidth, Yheight); - if (!GL_ARB_multitexture_Init()) exit(0); - if (!GL_EXT_paletted_texture_Init()) exit(0); - if (!GL_NV_register_combiners_Init()) exit(0); - unsigned char Ypal[768]; - unsigned char Upal[768]; - unsigned char Vpal[768]; - float bias[4]; - float Uscale[4]; - float Vscale[4]; - GenerateRGBTables(Ypal,Upal,Vpal,bias,Uscale,Vscale); - InitYUVPlanes(&Yhandle,&Uhandle,&Vhandle,Ywidth,Yheight,UVwidth,UVheight,filter,Ypal,Upal,Vpal); - SetupCombiners(); - SetConsts(bias,Uscale,Vscale); -} - - -void initialize(GLenum filter) { - glShadeModel(GL_SMOOTH); - glHint(GL_PERSPECTIVE_CORRECTION_HINT,GL_NICEST); - glClearColor(0.0f,0.0f,0.2f,1.0f); - Initialize_Backend(Ywidth,Yheight,UVwidth,UVheight,filter); -} |