diff options
Diffstat (limited to 'src/mesa/drivers/dri/common/utils.c')
| -rw-r--r-- | src/mesa/drivers/dri/common/utils.c | 531 |
1 files changed, 531 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/common/utils.c b/src/mesa/drivers/dri/common/utils.c new file mode 100644 index 0000000..00686bc --- /dev/null +++ b/src/mesa/drivers/dri/common/utils.c @@ -0,0 +1,531 @@ +/* + * (C) Copyright IBM Corporation 2002, 2004 + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * on the rights to use, copy, modify, merge, publish, distribute, sub + * license, and/or sell copies of the Software, and to permit persons to whom + * the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: + * Ian Romanick <idr@us.ibm.com> + */ +/* $XFree86:$ */ + +#include <string.h> +#include <stdlib.h> +#include "mtypes.h" +#include "extensions.h" +#include "utils.h" + +#if !defined( DRI_NEW_INTERFACE_ONLY ) +#include "xf86dri.h" /* For XF86DRIQueryVersion prototype. */ +#endif + +#if defined(USE_X86_ASM) +#include "x86/common_x86_asm.h" +#endif + +unsigned +driParseDebugString( const char * debug, + const struct dri_debug_control * control ) +{ + unsigned flag; + + + flag = 0; + if ( debug != NULL ) { + while( control->string != NULL ) { + if ( !strcmp( debug, "all" ) || + strstr( debug, control->string ) != NULL ) { + flag |= control->flag; + } + + control++; + } + } + + return flag; +} + + + + +unsigned +driGetRendererString( char * buffer, const char * hardware_name, + const char * driver_date, GLuint agp_mode ) +{ +#ifdef USE_X86_ASM + char * x86_str = ""; + char * mmx_str = ""; + char * tdnow_str = ""; + char * sse_str = ""; +#endif + unsigned offset; + + + offset = sprintf( buffer, "Mesa DRI %s %s", hardware_name, driver_date ); + + /* Append any AGP-specific information. + */ + switch ( agp_mode ) { + case 1: + case 2: + case 4: + case 8: + offset += sprintf( & buffer[ offset ], " AGP %ux", agp_mode ); + break; + + default: + break; + } + + /* Append any CPU-specific information. + */ +#ifdef USE_X86_ASM + if ( _mesa_x86_cpu_features ) { + x86_str = " x86"; + } +# ifdef USE_MMX_ASM + if ( cpu_has_mmx ) { + mmx_str = (cpu_has_mmxext) ? "/MMX+" : "/MMX"; + } +# endif +# ifdef USE_3DNOW_ASM + if ( cpu_has_3dnow ) { + tdnow_str = (cpu_has_3dnowext) ? "/3DNow!+" : "/3DNow!"; + } +# endif +# ifdef USE_SSE_ASM + if ( cpu_has_xmm ) { + sse_str = (cpu_has_xmm2) ? "/SSE2" : "/SSE"; + } +# endif + + offset += sprintf( & buffer[ offset ], "%s%s%s%s", + x86_str, mmx_str, tdnow_str, sse_str ); + +#elif defined(USE_SPARC_ASM) + + offset += sprintf( & buffer[ offset ], " Sparc" ); + +#endif + + return offset; +} + + + + +void driInitExtensions( GLcontext * ctx, + const char * const extensions_to_enable[], + GLboolean enable_imaging ) +{ + unsigned i; + + if ( enable_imaging ) { + _mesa_enable_imaging_extensions( ctx ); + } + + for ( i = 0 ; extensions_to_enable[i] != NULL ; i++ ) { + _mesa_enable_extension( ctx, extensions_to_enable[i] ); + } +} + + + + +#ifndef DRI_NEW_INTERFACE_ONLY +/** + * Utility function used by drivers to test the verions of other components. + * + * \deprecated + * All drivers using the new interface should use \c driCheckDriDdxVersions2 + * instead. This function is implemented using a call that is not available + * to drivers using the new interface. Furthermore, the information gained + * by this call (the DRI and DDX version information) is already provided to + * the driver via the new interface. + */ +GLboolean +driCheckDriDdxDrmVersions(__DRIscreenPrivate *sPriv, + const char * driver_name, + int dri_major, int dri_minor, + int ddx_major, int ddx_minor, + int drm_major, int drm_minor) +{ + static const char format[] = "%s DRI driver expected %s version %d.%d.x " + "but got version %d.%d.%d"; + int major, minor, patch; + + /* Check the DRI version */ + if (XF86DRIQueryVersion(sPriv->display, &major, &minor, &patch)) { + if (major != dri_major || minor < dri_minor) { + __driUtilMessage(format, driver_name, "DRI", dri_major, dri_minor, + major, minor, patch); + return GL_FALSE; + } + } + + /* Check that the DDX driver version is compatible */ + if (sPriv->ddxMajor != ddx_major || sPriv->ddxMinor < ddx_minor) { + __driUtilMessage(format, driver_name, "DDX", ddx_major, ddx_minor, + sPriv->ddxMajor, sPriv->ddxMinor, sPriv->ddxPatch); + return GL_FALSE; + } + + /* Check that the DRM driver version is compatible */ + if (sPriv->drmMajor != drm_major || sPriv->drmMinor < drm_minor) { + __driUtilMessage(format, driver_name, "DRM", drm_major, drm_minor, + sPriv->drmMajor, sPriv->drmMinor, sPriv->drmPatch); + return GL_FALSE; + } + + return GL_TRUE; +} +#endif /* DRI_NEW_INTERFACE_ONLY */ + +/** + * Utility function used by drivers to test the verions of other components. + * + * If one of the version requirements is not met, a message is logged using + * \c __driUtilMessage. + * + * \param driver_name Name of the driver. Used in error messages. + * \param driActual Actual DRI version supplied __driCreateNewScreen. + * \param driExpected Minimum DRI version required by the driver. + * \param ddxActual Actual DDX version supplied __driCreateNewScreen. + * \param ddxExpected Minimum DDX version required by the driver. + * \param drmActual Actual DRM version supplied __driCreateNewScreen. + * \param drmExpected Minimum DRM version required by the driver. + * + * \returns \c GL_TRUE if all version requirements are met. Otherwise, + * \c GL_FALSE is returned. + * + * \sa __driCreateNewScreen, driCheckDriDdxDrmVersions, __driUtilMessage + */ +GLboolean +driCheckDriDdxDrmVersions2(const char * driver_name, + const __DRIversion * driActual, + const __DRIversion * driExpected, + const __DRIversion * ddxActual, + const __DRIversion * ddxExpected, + const __DRIversion * drmActual, + const __DRIversion * drmExpected) +{ + static const char format[] = "%s DRI driver expected %s version %d.%d.x " + "but got version %d.%d.%d"; + + + /* Check the DRI version */ + if ( (driActual->major != driExpected->major) + || (driActual->minor < driExpected->minor) ) { + __driUtilMessage(format, driver_name, "DRI", + driExpected->major, driExpected->minor, + driActual->major, driActual->minor, driActual->patch); + return GL_FALSE; + } + + /* Check that the DDX driver version is compatible */ + if ( (ddxActual->major != ddxExpected->major) + || (ddxActual->minor < ddxExpected->minor) ) { + __driUtilMessage(format, driver_name, "DDX", + ddxExpected->major, ddxExpected->minor, + ddxActual->major, ddxActual->minor, ddxActual->patch); + return GL_FALSE; + } + + /* Check that the DRM driver version is compatible */ + if ( (drmActual->major != drmExpected->major) + || (drmActual->minor < drmExpected->minor) ) { + __driUtilMessage(format, driver_name, "DRM", + drmExpected->major, drmExpected->minor, + drmActual->major, drmActual->minor, drmActual->patch); + return GL_FALSE; + } + + return GL_TRUE; +} + + +GLboolean driClipRectToFramebuffer( const GLframebuffer *buffer, + GLint *x, GLint *y, + GLsizei *width, GLsizei *height ) +{ + /* left clipping */ + if (*x < buffer->_Xmin) { + *width -= (buffer->_Xmin - *x); + *x = buffer->_Xmin; + } + + /* right clipping */ + if (*x + *width > buffer->_Xmax) + *width -= (*x + *width - buffer->_Xmax - 1); + + if (*width <= 0) + return GL_FALSE; + + /* bottom clipping */ + if (*y < buffer->_Ymin) { + *height -= (buffer->_Ymin - *y); + *y = buffer->_Ymin; + } + + /* top clipping */ + if (*y + *height > buffer->_Ymax) + *height -= (*y + *height - buffer->_Ymax - 1); + + if (*height <= 0) + return GL_FALSE; + + return GL_TRUE; +} + + + +/** + * Creates a set of \c __GLcontextModes that a driver will expose. + * + * A set of \c __GLcontextModes will be created based on the supplied + * parameters. The number of modes processed will be 2 * + * \c num_depth_stencil_bits * \c num_db_modes. + * + * For the most part, data is just copied from \c depth_bits, \c stencil_bits, + * \c db_modes, and \c visType into each \c __GLcontextModes element. + * However, the meanings of \c fb_format and \c fb_type require further + * explanation. The \c fb_format specifies which color components are in + * each pixel and what the default order is. For example, \c GL_RGB specifies + * that red, green, blue are available and red is in the "most significant" + * position and blue is in the "least significant". The \c fb_type specifies + * the bit sizes of each component and the actual ordering. For example, if + * \c GL_UNSIGNED_SHORT_5_6_5_REV is specified with \c GL_RGB, bits [15:11] + * are the blue value, bits [10:5] are the green value, and bits [4:0] are + * the red value. + * + * One sublte issue is the combination of \c GL_RGB or \c GL_BGR and either + * of the \c GL_UNSIGNED_INT_8_8_8_8 modes. The resulting mask values in the + * \c __GLcontextModes structure is \b identical to the \c GL_RGBA or + * \c GL_BGRA case, except the \c alphaMask is zero. This means that, as + * far as this routine is concerned, \c GL_RGB with \c GL_UNSIGNED_INT_8_8_8_8 + * still uses 32-bits. + * + * If in doubt, look at the tables used in the function. + * + * \param ptr_to_modes Pointer to a pointer to a linked list of + * \c __GLcontextModes. Upon completion, a pointer to + * the next element to be process will be stored here. + * If the function fails and returns \c GL_FALSE, this + * value will be unmodified, but some elements in the + * linked list may be modified. + * \param fb_format Format of the framebuffer. Currently only \c GL_RGB, + * \c GL_RGBA, \c GL_BGR, and \c GL_BGRA are supported. + * \param fb_type Type of the pixels in the framebuffer. Currently only + * \c GL_UNSIGNED_SHORT_5_6_5, + * \c GL_UNSIGNED_SHORT_5_6_5_REV, + * \c GL_UNSIGNED_INT_8_8_8_8, and + * \c GL_UNSIGNED_INT_8_8_8_8_REV are supported. + * \param depth_bits Array of depth buffer sizes to be exposed. + * \param stencil_bits Array of stencil buffer sizes to be exposed. + * \param num_depth_stencil_bits Number of entries in both \c depth_bits and + * \c stencil_bits. + * \param db_modes Array of buffer swap modes. If an element has a + * value of \c GLX_NONE, then it represents a + * single-buffered mode. Other valid values are + * \c GLX_SWAP_EXCHANGE_OML, \c GLX_SWAP_COPY_OML, and + * \c GLX_SWAP_UNDEFINED_OML. See the + * GLX_OML_swap_method extension spec for more details. + * \param num_db_modes Number of entries in \c db_modes. + * \param visType GLX visual type. Usually either \c GLX_TRUE_COLOR or + * \c GLX_DIRECT_COLOR. + * + * \returns + * \c GL_TRUE on success or \c GL_FALSE on failure. Currently the only + * cause of failure is a bad parameter (i.e., unsupported \c fb_format or + * \c fb_type). + * + * \todo + * There is currently no way to support packed RGB modes (i.e., modes with + * exactly 3 bytes per pixel) or floating-point modes. This could probably + * be done by creating some new, private enums with clever names likes + * \c GL_UNSIGNED_3BYTE_8_8_8, \c GL_4FLOAT_32_32_32_32, + * \c GL_4HALF_16_16_16_16, etc. We can cross that bridge when we come to it. + */ +GLboolean +driFillInModes( __GLcontextModes ** ptr_to_modes, + GLenum fb_format, GLenum fb_type, + const u_int8_t * depth_bits, const u_int8_t * stencil_bits, + unsigned num_depth_stencil_bits, + const GLenum * db_modes, unsigned num_db_modes, + int visType ) +{ + static const u_int8_t bits_table[3][4] = { + /* R G B A */ + { 5, 6, 5, 0 }, /* Any GL_UNSIGNED_SHORT_5_6_5 */ + { 8, 8, 8, 0 }, /* Any RGB with any GL_UNSIGNED_INT_8_8_8_8 */ + { 8, 8, 8, 8 } /* Any RGBA with any GL_UNSIGNED_INT_8_8_8_8 */ + }; + + /* The following arrays are all indexed by the fb_type masked with 0x07. + * Given the four supported fb_type values, this results in valid array + * indices of 3, 4, 5, and 7. + */ + static const u_int32_t masks_table_rgb[8][4] = { + { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, + { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, + { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, + { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5 */ + { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5_REV */ + { 0xFF000000, 0x00FF0000, 0x0000FF00, 0x00000000 }, /* 8_8_8_8 */ + { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, + { 0x000000FF, 0x0000FF00, 0x00FF0000, 0x00000000 } /* 8_8_8_8_REV */ + }; + + static const u_int32_t masks_table_rgba[8][4] = { + { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, + { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, + { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, + { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5 */ + { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5_REV */ + { 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF }, /* 8_8_8_8 */ + { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, + { 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 }, /* 8_8_8_8_REV */ + }; + + static const u_int32_t masks_table_bgr[8][4] = { + { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, + { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, + { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, + { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5 */ + { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5_REV */ + { 0x0000FF00, 0x00FF0000, 0xFF000000, 0x00000000 }, /* 8_8_8_8 */ + { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, + { 0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000 }, /* 8_8_8_8_REV */ + }; + + static const u_int32_t masks_table_bgra[8][4] = { + { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, + { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, + { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, + { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5 */ + { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5_REV */ + { 0x0000FF00, 0x00FF0000, 0xFF000000, 0x000000FF }, /* 8_8_8_8 */ + { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, + { 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000 }, /* 8_8_8_8_REV */ + }; + + static const u_int8_t bytes_per_pixel[8] = { + 0, 0, 0, 2, 2, 4, 0, 4 + }; + + const u_int8_t * bits; + const u_int32_t * masks; + const int index = fb_type & 0x07; + __GLcontextModes * modes = *ptr_to_modes; + unsigned i; + unsigned j; + unsigned k; + + + if ( bytes_per_pixel[ index ] == 0 ) { + fprintf( stderr, "[%s:%u] Framebuffer type 0x%04x has 0 bytes per pixel.\n", + __FUNCTION__, __LINE__, fb_type ); + return GL_FALSE; + } + + + /* Valid types are GL_UNSIGNED_SHORT_5_6_5 and GL_UNSIGNED_INT_8_8_8_8 and + * the _REV versions. + * + * Valid formats are GL_RGBA, GL_RGB, and GL_BGRA. + */ + + switch ( fb_format ) { + case GL_RGB: + bits = (bytes_per_pixel[ index ] == 2) + ? bits_table[0] : bits_table[1]; + masks = masks_table_rgb[ index ]; + break; + + case GL_RGBA: + bits = (bytes_per_pixel[ index ] == 2) + ? bits_table[0] : bits_table[2]; + masks = masks_table_rgba[ index ]; + break; + + case GL_BGR: + bits = (bytes_per_pixel[ index ] == 2) + ? bits_table[0] : bits_table[1]; + masks = masks_table_bgr[ index ]; + break; + + case GL_BGRA: + bits = (bytes_per_pixel[ index ] == 2) + ? bits_table[0] : bits_table[2]; + masks = masks_table_bgra[ index ]; + break; + + default: + fprintf( stderr, "[%s:%u] Framebuffer format 0x%04x is not GL_RGB, GL_RGBA, GL_BGR, or GL_BGRA.\n", + __FUNCTION__, __LINE__, fb_format ); + return GL_FALSE; + } + + + for ( k = 0 ; k < num_depth_stencil_bits ; k++ ) { + for ( i = 0 ; i < num_db_modes ; i++ ) { + for ( j = 0 ; j < 2 ; j++ ) { + + modes->redBits = bits[0]; + modes->greenBits = bits[1]; + modes->blueBits = bits[2]; + modes->alphaBits = bits[3]; + modes->redMask = masks[0]; + modes->greenMask = masks[1]; + modes->blueMask = masks[2]; + modes->alphaMask = masks[3]; + modes->rgbBits = modes->redBits + modes->greenBits + + modes->blueBits + modes->alphaBits; + + modes->accumRedBits = 16 * j; + modes->accumGreenBits = 16 * j; + modes->accumBlueBits = 16 * j; + modes->accumAlphaBits = (masks[3] != 0) ? 16 * j : 0; + modes->visualRating = (j == 0) ? GLX_NONE : GLX_SLOW_CONFIG; + + modes->stencilBits = stencil_bits[k]; + modes->depthBits = depth_bits[k]; + + modes->visualType = visType; + modes->renderType = GLX_RGBA_BIT; + modes->drawableType = GLX_WINDOW_BIT; + modes->rgbMode = GL_TRUE; + + if ( db_modes[i] == GLX_NONE ) { + modes->doubleBufferMode = GL_FALSE; + } + else { + modes->doubleBufferMode = GL_TRUE; + modes->swapMethod = db_modes[i]; + } + + modes = modes->next; + } + } + } + + *ptr_to_modes = modes; + return GL_TRUE; +} |