diff options
Diffstat (limited to 'mesalib/src/mesa/drivers/dri/common/utils.c')
| -rw-r--r-- | mesalib/src/mesa/drivers/dri/common/utils.c | 1619 |
1 files changed, 821 insertions, 798 deletions
diff --git a/mesalib/src/mesa/drivers/dri/common/utils.c b/mesalib/src/mesa/drivers/dri/common/utils.c index 0dd879abc..a2b0b4e94 100644 --- a/mesalib/src/mesa/drivers/dri/common/utils.c +++ b/mesalib/src/mesa/drivers/dri/common/utils.c @@ -1,798 +1,821 @@ -/* - * (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. - */ - -/** - * \file utils.c - * Utility functions for DRI drivers. - * - * \author Ian Romanick <idr@us.ibm.com> - */ - -#include <string.h> -#include <stdlib.h> -#include "main/mtypes.h" -#include "main/cpuinfo.h" -#include "main/extensions.h" -#include "utils.h" - - -/** - * Print message to \c stderr if the \c LIBGL_DEBUG environment variable - * is set. - * - * Is called from the drivers. - * - * \param f \c printf like format string. - */ -void -__driUtilMessage(const char *f, ...) -{ - va_list args; - - if (getenv("LIBGL_DEBUG")) { - fprintf(stderr, "libGL: "); - va_start(args, f); - vfprintf(stderr, f, args); - va_end(args); - fprintf(stderr, "\n"); - } -} - - -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; -} - - - -/** - * Create the \c GL_RENDERER string for DRI drivers. - * - * Almost all DRI drivers use a \c GL_RENDERER string of the form: - * - * "Mesa DRI <chip> <driver date> <AGP speed) <CPU information>" - * - * Using the supplied chip name, driver data, and AGP speed, this function - * creates the string. - * - * \param buffer Buffer to hold the \c GL_RENDERER string. - * \param hardware_name Name of the hardware. - * \param driver_date Driver date. - * \param agp_mode AGP mode (speed). - * - * \returns - * The length of the string stored in \c buffer. This does \b not include - * the terminating \c NUL character. - */ -unsigned -driGetRendererString( char * buffer, const char * hardware_name, - const char * driver_date, GLuint agp_mode ) -{ - unsigned offset; - char *cpu; - - 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. - */ - cpu = _mesa_get_cpu_string(); - if (cpu) { - offset += sprintf(buffer + offset, " %s", cpu); - free(cpu); - } - - return offset; -} - - - - -#define need_GL_ARB_draw_buffers -#define need_GL_ARB_multisample -#define need_GL_ARB_texture_compression -#define need_GL_ARB_transpose_matrix -#define need_GL_ARB_vertex_buffer_object -#define need_GL_ARB_window_pos -#define need_GL_EXT_compiled_vertex_array -#define need_GL_EXT_multi_draw_arrays -#define need_GL_EXT_polygon_offset -#define need_GL_EXT_texture_object -#define need_GL_EXT_vertex_array -#define need_GL_IBM_multimode_draw_arrays -#define need_GL_MESA_window_pos - -/* These are needed in *all* drivers because Mesa internally implements - * certain functionality in terms of functions provided by these extensions. - * For example, glBlendFunc is implemented by calling glBlendFuncSeparateEXT. - */ -#define need_GL_EXT_blend_func_separate -#define need_GL_NV_vertex_program - -#include "main/remap_helper.h" - -static const struct dri_extension all_mesa_extensions[] = { - { "GL_ARB_draw_buffers", GL_ARB_draw_buffers_functions }, - { "GL_ARB_multisample", GL_ARB_multisample_functions }, - { "GL_ARB_texture_compression", GL_ARB_texture_compression_functions }, - { "GL_ARB_transpose_matrix", GL_ARB_transpose_matrix_functions }, - { "GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions}, - { "GL_ARB_window_pos", GL_ARB_window_pos_functions }, - { "GL_EXT_blend_func_separate", GL_EXT_blend_func_separate_functions }, - { "GL_EXT_compiled_vertex_array", GL_EXT_compiled_vertex_array_functions }, - { "GL_EXT_multi_draw_arrays", GL_EXT_multi_draw_arrays_functions }, - { "GL_EXT_polygon_offset", GL_EXT_polygon_offset_functions }, - { "GL_EXT_texture_object", GL_EXT_texture_object_functions }, - { "GL_EXT_vertex_array", GL_EXT_vertex_array_functions }, - { "GL_IBM_multimode_draw_arrays", GL_IBM_multimode_draw_arrays_functions }, - { "GL_MESA_window_pos", GL_MESA_window_pos_functions }, - { "GL_NV_vertex_program", GL_NV_vertex_program_functions }, - { NULL, NULL } -}; - - -/** - * Enable and map extensions supported by the driver. - * - * When ctx is NULL, extensions are not enabled, but their functions - * are still mapped. When extensions_to_enable is NULL, all static - * functions known to mesa core are mapped. - * - * \bug - * ARB_imaging isn't handled properly. In Mesa, enabling ARB_imaging also - * enables all the sub-extensions that are folded into it. This means that - * we need to add entry-points (via \c driInitSingleExtension) for those - * new functions here. - */ -void driInitExtensions( GLcontext * ctx, - const struct dri_extension * extensions_to_enable, - GLboolean enable_imaging ) -{ - static int first_time = 1; - unsigned i; - - if ( first_time ) { - first_time = 0; - driInitExtensions( NULL, all_mesa_extensions, GL_FALSE ); - } - - if ( (ctx != NULL) && enable_imaging ) { - _mesa_enable_imaging_extensions( ctx ); - } - - /* The caller is too lazy to list any extension */ - if ( extensions_to_enable == NULL ) { - /* Map the static functions. Together with those mapped by remap - * table, this should cover everything mesa core knows. - */ - _mesa_map_static_functions(); - return; - } - - for ( i = 0 ; extensions_to_enable[i].name != NULL ; i++ ) { - driInitSingleExtension( ctx, & extensions_to_enable[i] ); - } -} - - - - -/** - * Enable and map functions for a single extension - * - * \param ctx Context where extension is to be enabled. - * \param ext Extension that is to be enabled. - * - * \sa driInitExtensions, _mesa_enable_extension, _mesa_map_function_array - */ -void driInitSingleExtension( GLcontext * ctx, - const struct dri_extension * ext ) -{ - if ( ext->functions != NULL ) { - _mesa_map_function_array(ext->functions); - } - - if ( ctx != NULL ) { - _mesa_enable_extension( ctx, ext->name ); - } -} - - -/** - * Utility function used by drivers to test the verions of other components. - * - * \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 minor and range of DDX major 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, driCheckDriDdxDrmVersions2 - * - * \todo - * Now that the old \c driCheckDriDdxDrmVersions function is gone, this - * function and \c driCheckDriDdxDrmVersions2 should be renamed. - */ -GLboolean -driCheckDriDdxDrmVersions3(const char * driver_name, - const __DRIversion * driActual, - const __DRIversion * driExpected, - const __DRIversion * ddxActual, - const __DRIutilversion2 * 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\n"; - static const char format2[] = "%s DRI driver expected %s version %d-%d.%d.x " - "but got version %d.%d.%d\n"; - - - /* Check the DRI version */ - if ( (driActual->major != driExpected->major) - || (driActual->minor < driExpected->minor) ) { - fprintf(stderr, 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_min) - || (ddxActual->major > ddxExpected->major_max) - || (ddxActual->minor < ddxExpected->minor) ) { - fprintf(stderr, format2, driver_name, "DDX", - ddxExpected->major_min, ddxExpected->major_max, 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) ) { - fprintf(stderr, format, driver_name, "DRM", - drmExpected->major, drmExpected->minor, - drmActual->major, drmActual->minor, drmActual->patch); - return GL_FALSE; - } - - return GL_TRUE; -} - -GLboolean -driCheckDriDdxDrmVersions2(const char * driver_name, - const __DRIversion * driActual, - const __DRIversion * driExpected, - const __DRIversion * ddxActual, - const __DRIversion * ddxExpected, - const __DRIversion * drmActual, - const __DRIversion * drmExpected) -{ - __DRIutilversion2 ddx_expected; - ddx_expected.major_min = ddxExpected->major; - ddx_expected.major_max = ddxExpected->major; - ddx_expected.minor = ddxExpected->minor; - ddx_expected.patch = ddxExpected->patch; - return driCheckDriDdxDrmVersions3(driver_name, driActual, - driExpected, ddxActual, & ddx_expected, - drmActual, drmExpected); -} - -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 msaa_samples Array of msaa sample count. 0 represents a visual - * without a multisample buffer. - * \param num_msaa_modes Number of entries in \c msaa_samples. - * \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. - */ -__DRIconfig ** -driCreateConfigs(GLenum fb_format, GLenum fb_type, - const uint8_t * depth_bits, const uint8_t * stencil_bits, - unsigned num_depth_stencil_bits, - const GLenum * db_modes, unsigned num_db_modes, - const uint8_t * msaa_samples, unsigned num_msaa_modes, - GLboolean enable_accum) -{ - static const uint8_t bits_table[4][4] = { - /* R G B A */ - { 3, 3, 2, 0 }, /* Any GL_UNSIGNED_BYTE_3_3_2 */ - { 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 */ - }; - - static const uint32_t masks_table_rgb[6][4] = { - { 0x000000E0, 0x0000001C, 0x00000003, 0x00000000 }, /* 3_3_2 */ - { 0x00000007, 0x00000038, 0x000000C0, 0x00000000 }, /* 2_3_3_REV */ - { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5 */ - { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5_REV */ - { 0xFF000000, 0x00FF0000, 0x0000FF00, 0x00000000 }, /* 8_8_8_8 */ - { 0x000000FF, 0x0000FF00, 0x00FF0000, 0x00000000 } /* 8_8_8_8_REV */ - }; - - static const uint32_t masks_table_rgba[6][4] = { - { 0x000000E0, 0x0000001C, 0x00000003, 0x00000000 }, /* 3_3_2 */ - { 0x00000007, 0x00000038, 0x000000C0, 0x00000000 }, /* 2_3_3_REV */ - { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5 */ - { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5_REV */ - { 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF }, /* 8_8_8_8 */ - { 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 }, /* 8_8_8_8_REV */ - }; - - static const uint32_t masks_table_bgr[6][4] = { - { 0x00000007, 0x00000038, 0x000000C0, 0x00000000 }, /* 3_3_2 */ - { 0x000000E0, 0x0000001C, 0x00000003, 0x00000000 }, /* 2_3_3_REV */ - { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5 */ - { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5_REV */ - { 0x0000FF00, 0x00FF0000, 0xFF000000, 0x00000000 }, /* 8_8_8_8 */ - { 0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000 }, /* 8_8_8_8_REV */ - }; - - static const uint32_t masks_table_bgra[6][4] = { - { 0x00000007, 0x00000038, 0x000000C0, 0x00000000 }, /* 3_3_2 */ - { 0x000000E0, 0x0000001C, 0x00000003, 0x00000000 }, /* 2_3_3_REV */ - { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5 */ - { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5_REV */ - { 0x0000FF00, 0x00FF0000, 0xFF000000, 0x000000FF }, /* 8_8_8_8 */ - { 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000 }, /* 8_8_8_8_REV */ - }; - - static const uint8_t bytes_per_pixel[6] = { - 1, /* 3_3_2 */ - 1, /* 2_3_3_REV */ - 2, /* 5_6_5 */ - 2, /* 5_6_5_REV */ - 4, /* 8_8_8_8 */ - 4 /* 8_8_8_8_REV */ - }; - - const uint8_t * bits; - const uint32_t * masks; - int index; - __DRIconfig **configs, **c; - __GLcontextModes *modes; - unsigned i, j, k, h; - unsigned num_modes; - unsigned num_accum_bits = (enable_accum) ? 2 : 1; - - switch ( fb_type ) { - case GL_UNSIGNED_BYTE_3_3_2: - index = 0; - break; - case GL_UNSIGNED_BYTE_2_3_3_REV: - index = 1; - break; - case GL_UNSIGNED_SHORT_5_6_5: - index = 2; - break; - case GL_UNSIGNED_SHORT_5_6_5_REV: - index = 3; - break; - case GL_UNSIGNED_INT_8_8_8_8: - index = 4; - break; - case GL_UNSIGNED_INT_8_8_8_8_REV: - index = 5; - break; - default: - fprintf( stderr, "[%s:%u] Unknown framebuffer type 0x%04x.\n", - __FUNCTION__, __LINE__, fb_type ); - return NULL; - } - - - /* 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: - masks = masks_table_rgb[ index ]; - break; - - case GL_RGBA: - masks = masks_table_rgba[ index ]; - break; - - case GL_BGR: - masks = masks_table_bgr[ index ]; - break; - - case GL_BGRA: - masks = masks_table_bgra[ index ]; - break; - - default: - fprintf( stderr, "[%s:%u] Unknown framebuffer format 0x%04x.\n", - __FUNCTION__, __LINE__, fb_format ); - return NULL; - } - - switch ( bytes_per_pixel[ index ] ) { - case 1: - bits = bits_table[0]; - break; - case 2: - bits = bits_table[1]; - break; - default: - bits = ((fb_format == GL_RGB) || (fb_format == GL_BGR)) - ? bits_table[2] - : bits_table[3]; - break; - } - - num_modes = num_depth_stencil_bits * num_db_modes * num_accum_bits * num_msaa_modes; - configs = calloc(1, (num_modes + 1) * sizeof *configs); - if (configs == NULL) - return NULL; - - c = configs; - for ( k = 0 ; k < num_depth_stencil_bits ; k++ ) { - for ( i = 0 ; i < num_db_modes ; i++ ) { - for ( h = 0 ; h < num_msaa_modes; h++ ) { - for ( j = 0 ; j < num_accum_bits ; j++ ) { - *c = malloc (sizeof **c); - modes = &(*c)->modes; - c++; - - memset(modes, 0, sizeof *modes); - 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->transparentPixel = GLX_NONE; - modes->transparentRed = GLX_DONT_CARE; - modes->transparentGreen = GLX_DONT_CARE; - modes->transparentBlue = GLX_DONT_CARE; - modes->transparentAlpha = GLX_DONT_CARE; - modes->transparentIndex = GLX_DONT_CARE; - modes->visualType = GLX_DONT_CARE; - 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->samples = msaa_samples[h]; - modes->sampleBuffers = modes->samples ? 1 : 0; - - - modes->haveAccumBuffer = ((modes->accumRedBits + - modes->accumGreenBits + - modes->accumBlueBits + - modes->accumAlphaBits) > 0); - modes->haveDepthBuffer = (modes->depthBits > 0); - modes->haveStencilBuffer = (modes->stencilBits > 0); - - modes->bindToTextureRgb = GL_TRUE; - modes->bindToTextureRgba = GL_TRUE; - modes->bindToMipmapTexture = GL_FALSE; - modes->bindToTextureTargets = - __DRI_ATTRIB_TEXTURE_1D_BIT | - __DRI_ATTRIB_TEXTURE_2D_BIT | - __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT; - } - } - } - } - *c = NULL; - - return configs; -} - -__DRIconfig **driConcatConfigs(__DRIconfig **a, - __DRIconfig **b) -{ - __DRIconfig **all; - int i, j, index; - - i = 0; - while (a[i] != NULL) - i++; - j = 0; - while (b[j] != NULL) - j++; - - all = malloc((i + j + 1) * sizeof *all); - index = 0; - for (i = 0; a[i] != NULL; i++) - all[index++] = a[i]; - for (j = 0; b[j] != NULL; j++) - all[index++] = b[j]; - all[index++] = NULL; - - free(a); - free(b); - - return all; -} - -#define __ATTRIB(attrib, field) \ - { attrib, offsetof(__GLcontextModes, field) } - -static const struct { unsigned int attrib, offset; } attribMap[] = { - __ATTRIB(__DRI_ATTRIB_BUFFER_SIZE, rgbBits), - __ATTRIB(__DRI_ATTRIB_LEVEL, level), - __ATTRIB(__DRI_ATTRIB_RED_SIZE, redBits), - __ATTRIB(__DRI_ATTRIB_GREEN_SIZE, greenBits), - __ATTRIB(__DRI_ATTRIB_BLUE_SIZE, blueBits), - __ATTRIB(__DRI_ATTRIB_ALPHA_SIZE, alphaBits), - __ATTRIB(__DRI_ATTRIB_DEPTH_SIZE, depthBits), - __ATTRIB(__DRI_ATTRIB_STENCIL_SIZE, stencilBits), - __ATTRIB(__DRI_ATTRIB_ACCUM_RED_SIZE, accumRedBits), - __ATTRIB(__DRI_ATTRIB_ACCUM_GREEN_SIZE, accumGreenBits), - __ATTRIB(__DRI_ATTRIB_ACCUM_BLUE_SIZE, accumBlueBits), - __ATTRIB(__DRI_ATTRIB_ACCUM_ALPHA_SIZE, accumAlphaBits), - __ATTRIB(__DRI_ATTRIB_SAMPLE_BUFFERS, sampleBuffers), - __ATTRIB(__DRI_ATTRIB_SAMPLES, samples), - __ATTRIB(__DRI_ATTRIB_DOUBLE_BUFFER, doubleBufferMode), - __ATTRIB(__DRI_ATTRIB_STEREO, stereoMode), - __ATTRIB(__DRI_ATTRIB_AUX_BUFFERS, numAuxBuffers), - __ATTRIB(__DRI_ATTRIB_TRANSPARENT_TYPE, transparentPixel), - __ATTRIB(__DRI_ATTRIB_TRANSPARENT_INDEX_VALUE, transparentPixel), - __ATTRIB(__DRI_ATTRIB_TRANSPARENT_RED_VALUE, transparentRed), - __ATTRIB(__DRI_ATTRIB_TRANSPARENT_GREEN_VALUE, transparentGreen), - __ATTRIB(__DRI_ATTRIB_TRANSPARENT_BLUE_VALUE, transparentBlue), - __ATTRIB(__DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE, transparentAlpha), - __ATTRIB(__DRI_ATTRIB_FLOAT_MODE, floatMode), - __ATTRIB(__DRI_ATTRIB_RED_MASK, redMask), - __ATTRIB(__DRI_ATTRIB_GREEN_MASK, greenMask), - __ATTRIB(__DRI_ATTRIB_BLUE_MASK, blueMask), - __ATTRIB(__DRI_ATTRIB_ALPHA_MASK, alphaMask), - __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_WIDTH, maxPbufferWidth), - __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_HEIGHT, maxPbufferHeight), - __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_PIXELS, maxPbufferPixels), - __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH, optimalPbufferWidth), - __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT, optimalPbufferHeight), - __ATTRIB(__DRI_ATTRIB_SWAP_METHOD, swapMethod), - __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGB, bindToTextureRgb), - __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGBA, bindToTextureRgba), - __ATTRIB(__DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE, bindToMipmapTexture), - __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS, bindToTextureTargets), - __ATTRIB(__DRI_ATTRIB_YINVERTED, yInverted), - - /* The struct field doesn't matter here, these are handled by the - * switch in driGetConfigAttribIndex. We need them in the array - * so the iterator includes them though.*/ - __ATTRIB(__DRI_ATTRIB_RENDER_TYPE, level), - __ATTRIB(__DRI_ATTRIB_CONFIG_CAVEAT, level), - __ATTRIB(__DRI_ATTRIB_SWAP_METHOD, level) -}; - -#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) - -static int -driGetConfigAttribIndex(const __DRIconfig *config, - unsigned int index, unsigned int *value) -{ - switch (attribMap[index].attrib) { - case __DRI_ATTRIB_RENDER_TYPE: - *value = __DRI_ATTRIB_RGBA_BIT; - break; - case __DRI_ATTRIB_CONFIG_CAVEAT: - if (config->modes.visualRating == GLX_NON_CONFORMANT_CONFIG) - *value = __DRI_ATTRIB_NON_CONFORMANT_CONFIG; - else if (config->modes.visualRating == GLX_SLOW_CONFIG) - *value = __DRI_ATTRIB_SLOW_BIT; - else - *value = 0; - break; - case __DRI_ATTRIB_SWAP_METHOD: - break; - - case __DRI_ATTRIB_FLOAT_MODE: - *value = config->modes.floatMode; - break; - - default: - *value = *(unsigned int *) - ((char *) &config->modes + attribMap[index].offset); - - break; - } - - return GL_TRUE; -} - -int -driGetConfigAttrib(const __DRIconfig *config, - unsigned int attrib, unsigned int *value) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(attribMap); i++) - if (attribMap[i].attrib == attrib) - return driGetConfigAttribIndex(config, i, value); - - return GL_FALSE; -} - -int -driIndexConfigAttrib(const __DRIconfig *config, int index, - unsigned int *attrib, unsigned int *value) -{ - if (index >= 0 && index < ARRAY_SIZE(attribMap)) { - *attrib = attribMap[index].attrib; - return driGetConfigAttribIndex(config, index, value); - } - - return GL_FALSE; -} +/*
+ * (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.
+ */
+
+/**
+ * \file utils.c
+ * Utility functions for DRI drivers.
+ *
+ * \author Ian Romanick <idr@us.ibm.com>
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include "main/mtypes.h"
+#include "main/cpuinfo.h"
+#include "main/extensions.h"
+#include "utils.h"
+
+
+/**
+ * Print message to \c stderr if the \c LIBGL_DEBUG environment variable
+ * is set.
+ *
+ * Is called from the drivers.
+ *
+ * \param f \c printf like format string.
+ */
+void
+__driUtilMessage(const char *f, ...)
+{
+ va_list args;
+
+ if (getenv("LIBGL_DEBUG")) {
+ fprintf(stderr, "libGL: ");
+ va_start(args, f);
+ vfprintf(stderr, f, args);
+ va_end(args);
+ fprintf(stderr, "\n");
+ }
+}
+
+
+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;
+}
+
+
+
+/**
+ * Create the \c GL_RENDERER string for DRI drivers.
+ *
+ * Almost all DRI drivers use a \c GL_RENDERER string of the form:
+ *
+ * "Mesa DRI <chip> <driver date> <AGP speed) <CPU information>"
+ *
+ * Using the supplied chip name, driver data, and AGP speed, this function
+ * creates the string.
+ *
+ * \param buffer Buffer to hold the \c GL_RENDERER string.
+ * \param hardware_name Name of the hardware.
+ * \param driver_date Driver date.
+ * \param agp_mode AGP mode (speed).
+ *
+ * \returns
+ * The length of the string stored in \c buffer. This does \b not include
+ * the terminating \c NUL character.
+ */
+unsigned
+driGetRendererString( char * buffer, const char * hardware_name,
+ const char * driver_date, GLuint agp_mode )
+{
+ unsigned offset;
+ char *cpu;
+
+ 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.
+ */
+ cpu = _mesa_get_cpu_string();
+ if (cpu) {
+ offset += sprintf(buffer + offset, " %s", cpu);
+ free(cpu);
+ }
+
+ return offset;
+}
+
+
+
+
+#define need_GL_ARB_copy_buffer
+#define need_GL_ARB_draw_buffers
+#define need_GL_ARB_multisample
+#define need_GL_ARB_texture_compression
+#define need_GL_ARB_transpose_matrix
+#define need_GL_ARB_vertex_buffer_object
+#define need_GL_ARB_window_pos
+#define need_GL_EXT_compiled_vertex_array
+#define need_GL_EXT_multi_draw_arrays
+#define need_GL_EXT_polygon_offset
+#define need_GL_EXT_texture_object
+#define need_GL_EXT_vertex_array
+#define need_GL_IBM_multimode_draw_arrays
+#define need_GL_MESA_window_pos
+
+/* These are needed in *all* drivers because Mesa internally implements
+ * certain functionality in terms of functions provided by these extensions.
+ * For example, glBlendFunc is implemented by calling glBlendFuncSeparateEXT.
+ */
+#define need_GL_EXT_blend_func_separate
+#define need_GL_NV_vertex_program
+
+#include "main/remap_helper.h"
+
+static const struct dri_extension all_mesa_extensions[] = {
+ { "GL_ARB_copy_buffer", GL_ARB_copy_buffer_functions },
+ { "GL_ARB_draw_buffers", GL_ARB_draw_buffers_functions },
+ { "GL_ARB_multisample", GL_ARB_multisample_functions },
+ { "GL_ARB_texture_compression", GL_ARB_texture_compression_functions },
+ { "GL_ARB_transpose_matrix", GL_ARB_transpose_matrix_functions },
+ { "GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions},
+ { "GL_ARB_window_pos", GL_ARB_window_pos_functions },
+ { "GL_EXT_blend_func_separate", GL_EXT_blend_func_separate_functions },
+ { "GL_EXT_compiled_vertex_array", GL_EXT_compiled_vertex_array_functions },
+ { "GL_EXT_multi_draw_arrays", GL_EXT_multi_draw_arrays_functions },
+ { "GL_EXT_polygon_offset", GL_EXT_polygon_offset_functions },
+ { "GL_EXT_texture_object", GL_EXT_texture_object_functions },
+ { "GL_EXT_vertex_array", GL_EXT_vertex_array_functions },
+ { "GL_IBM_multimode_draw_arrays", GL_IBM_multimode_draw_arrays_functions },
+ { "GL_MESA_window_pos", GL_MESA_window_pos_functions },
+ { "GL_NV_vertex_program", GL_NV_vertex_program_functions },
+ { NULL, NULL }
+};
+
+
+/**
+ * Enable and map extensions supported by the driver.
+ *
+ * When ctx is NULL, extensions are not enabled, but their functions
+ * are still mapped. When extensions_to_enable is NULL, all static
+ * functions known to mesa core are mapped.
+ *
+ * \bug
+ * ARB_imaging isn't handled properly. In Mesa, enabling ARB_imaging also
+ * enables all the sub-extensions that are folded into it. This means that
+ * we need to add entry-points (via \c driInitSingleExtension) for those
+ * new functions here.
+ */
+void driInitExtensions( struct gl_context * ctx,
+ const struct dri_extension * extensions_to_enable,
+ GLboolean enable_imaging )
+{
+ static int first_time = 1;
+ unsigned i;
+
+ if ( first_time ) {
+ first_time = 0;
+ driInitExtensions( NULL, all_mesa_extensions, GL_FALSE );
+ }
+
+ if ( (ctx != NULL) && enable_imaging ) {
+ _mesa_enable_imaging_extensions( ctx );
+ }
+
+ /* The caller is too lazy to list any extension */
+ if ( extensions_to_enable == NULL ) {
+ /* Map the static functions. Together with those mapped by remap
+ * table, this should cover everything mesa core knows.
+ */
+ _mesa_map_static_functions();
+ return;
+ }
+
+ for ( i = 0 ; extensions_to_enable[i].name != NULL ; i++ ) {
+ driInitSingleExtension( ctx, & extensions_to_enable[i] );
+ }
+}
+
+
+
+
+/**
+ * Enable and map functions for a single extension
+ *
+ * \param ctx Context where extension is to be enabled.
+ * \param ext Extension that is to be enabled.
+ *
+ * \sa driInitExtensions, _mesa_enable_extension, _mesa_map_function_array
+ */
+void driInitSingleExtension( struct gl_context * ctx,
+ const struct dri_extension * ext )
+{
+ if ( ext->functions != NULL ) {
+ _mesa_map_function_array(ext->functions);
+ }
+
+ if ( ctx != NULL ) {
+ _mesa_enable_extension( ctx, ext->name );
+ }
+}
+
+
+/**
+ * Utility function used by drivers to test the verions of other components.
+ *
+ * \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 minor and range of DDX major 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, driCheckDriDdxDrmVersions2
+ *
+ * \todo
+ * Now that the old \c driCheckDriDdxDrmVersions function is gone, this
+ * function and \c driCheckDriDdxDrmVersions2 should be renamed.
+ */
+GLboolean
+driCheckDriDdxDrmVersions3(const char * driver_name,
+ const __DRIversion * driActual,
+ const __DRIversion * driExpected,
+ const __DRIversion * ddxActual,
+ const __DRIutilversion2 * 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\n";
+ static const char format2[] = "%s DRI driver expected %s version %d-%d.%d.x "
+ "but got version %d.%d.%d\n";
+
+
+ /* Check the DRI version */
+ if ( (driActual->major != driExpected->major)
+ || (driActual->minor < driExpected->minor) ) {
+ fprintf(stderr, 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_min)
+ || (ddxActual->major > ddxExpected->major_max)
+ || (ddxActual->minor < ddxExpected->minor) ) {
+ fprintf(stderr, format2, driver_name, "DDX",
+ ddxExpected->major_min, ddxExpected->major_max, 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) ) {
+ fprintf(stderr, format, driver_name, "DRM",
+ drmExpected->major, drmExpected->minor,
+ drmActual->major, drmActual->minor, drmActual->patch);
+ return GL_FALSE;
+ }
+
+ return GL_TRUE;
+}
+
+GLboolean
+driCheckDriDdxDrmVersions2(const char * driver_name,
+ const __DRIversion * driActual,
+ const __DRIversion * driExpected,
+ const __DRIversion * ddxActual,
+ const __DRIversion * ddxExpected,
+ const __DRIversion * drmActual,
+ const __DRIversion * drmExpected)
+{
+ __DRIutilversion2 ddx_expected;
+ ddx_expected.major_min = ddxExpected->major;
+ ddx_expected.major_max = ddxExpected->major;
+ ddx_expected.minor = ddxExpected->minor;
+ ddx_expected.patch = ddxExpected->patch;
+ return driCheckDriDdxDrmVersions3(driver_name, driActual,
+ driExpected, ddxActual, & ddx_expected,
+ drmActual, drmExpected);
+}
+
+GLboolean driClipRectToFramebuffer( const struct gl_framebuffer *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 struct gl_config that a driver will expose.
+ *
+ * A set of \c struct gl_config 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 struct gl_config 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 struct gl_config 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 struct gl_config. 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 msaa_samples Array of msaa sample count. 0 represents a visual
+ * without a multisample buffer.
+ * \param num_msaa_modes Number of entries in \c msaa_samples.
+ * \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.
+ */
+__DRIconfig **
+driCreateConfigs(GLenum fb_format, GLenum fb_type,
+ const uint8_t * depth_bits, const uint8_t * stencil_bits,
+ unsigned num_depth_stencil_bits,
+ const GLenum * db_modes, unsigned num_db_modes,
+ const uint8_t * msaa_samples, unsigned num_msaa_modes,
+ GLboolean enable_accum)
+{
+ static const uint8_t bits_table[4][4] = {
+ /* R G B A */
+ { 3, 3, 2, 0 }, /* Any GL_UNSIGNED_BYTE_3_3_2 */
+ { 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 */
+ };
+
+ static const uint32_t masks_table_rgb[6][4] = {
+ { 0x000000E0, 0x0000001C, 0x00000003, 0x00000000 }, /* 3_3_2 */
+ { 0x00000007, 0x00000038, 0x000000C0, 0x00000000 }, /* 2_3_3_REV */
+ { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5 */
+ { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5_REV */
+ { 0xFF000000, 0x00FF0000, 0x0000FF00, 0x00000000 }, /* 8_8_8_8 */
+ { 0x000000FF, 0x0000FF00, 0x00FF0000, 0x00000000 } /* 8_8_8_8_REV */
+ };
+
+ static const uint32_t masks_table_rgba[6][4] = {
+ { 0x000000E0, 0x0000001C, 0x00000003, 0x00000000 }, /* 3_3_2 */
+ { 0x00000007, 0x00000038, 0x000000C0, 0x00000000 }, /* 2_3_3_REV */
+ { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5 */
+ { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5_REV */
+ { 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF }, /* 8_8_8_8 */
+ { 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 }, /* 8_8_8_8_REV */
+ };
+
+ static const uint32_t masks_table_bgr[6][4] = {
+ { 0x00000007, 0x00000038, 0x000000C0, 0x00000000 }, /* 3_3_2 */
+ { 0x000000E0, 0x0000001C, 0x00000003, 0x00000000 }, /* 2_3_3_REV */
+ { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5 */
+ { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5_REV */
+ { 0x0000FF00, 0x00FF0000, 0xFF000000, 0x00000000 }, /* 8_8_8_8 */
+ { 0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000 }, /* 8_8_8_8_REV */
+ };
+
+ static const uint32_t masks_table_bgra[6][4] = {
+ { 0x00000007, 0x00000038, 0x000000C0, 0x00000000 }, /* 3_3_2 */
+ { 0x000000E0, 0x0000001C, 0x00000003, 0x00000000 }, /* 2_3_3_REV */
+ { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5 */
+ { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5_REV */
+ { 0x0000FF00, 0x00FF0000, 0xFF000000, 0x000000FF }, /* 8_8_8_8 */
+ { 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000 }, /* 8_8_8_8_REV */
+ };
+
+ static const uint8_t bytes_per_pixel[6] = {
+ 1, /* 3_3_2 */
+ 1, /* 2_3_3_REV */
+ 2, /* 5_6_5 */
+ 2, /* 5_6_5_REV */
+ 4, /* 8_8_8_8 */
+ 4 /* 8_8_8_8_REV */
+ };
+
+ const uint8_t * bits;
+ const uint32_t * masks;
+ int index;
+ __DRIconfig **configs, **c;
+ struct gl_config *modes;
+ unsigned i, j, k, h;
+ unsigned num_modes;
+ unsigned num_accum_bits = (enable_accum) ? 2 : 1;
+
+ switch ( fb_type ) {
+ case GL_UNSIGNED_BYTE_3_3_2:
+ index = 0;
+ break;
+ case GL_UNSIGNED_BYTE_2_3_3_REV:
+ index = 1;
+ break;
+ case GL_UNSIGNED_SHORT_5_6_5:
+ index = 2;
+ break;
+ case GL_UNSIGNED_SHORT_5_6_5_REV:
+ index = 3;
+ break;
+ case GL_UNSIGNED_INT_8_8_8_8:
+ index = 4;
+ break;
+ case GL_UNSIGNED_INT_8_8_8_8_REV:
+ index = 5;
+ break;
+ default:
+ fprintf( stderr, "[%s:%u] Unknown framebuffer type 0x%04x.\n",
+ __FUNCTION__, __LINE__, fb_type );
+ return NULL;
+ }
+
+
+ /* 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:
+ masks = masks_table_rgb[ index ];
+ break;
+
+ case GL_RGBA:
+ masks = masks_table_rgba[ index ];
+ break;
+
+ case GL_BGR:
+ masks = masks_table_bgr[ index ];
+ break;
+
+ case GL_BGRA:
+ masks = masks_table_bgra[ index ];
+ break;
+
+ default:
+ fprintf( stderr, "[%s:%u] Unknown framebuffer format 0x%04x.\n",
+ __FUNCTION__, __LINE__, fb_format );
+ return NULL;
+ }
+
+ switch ( bytes_per_pixel[ index ] ) {
+ case 1:
+ bits = bits_table[0];
+ break;
+ case 2:
+ bits = bits_table[1];
+ break;
+ default:
+ bits = ((fb_format == GL_RGB) || (fb_format == GL_BGR))
+ ? bits_table[2]
+ : bits_table[3];
+ break;
+ }
+
+ num_modes = num_depth_stencil_bits * num_db_modes * num_accum_bits * num_msaa_modes;
+ configs = calloc(1, (num_modes + 1) * sizeof *configs);
+ if (configs == NULL)
+ return NULL;
+
+ c = configs;
+ for ( k = 0 ; k < num_depth_stencil_bits ; k++ ) {
+ for ( i = 0 ; i < num_db_modes ; i++ ) {
+ for ( h = 0 ; h < num_msaa_modes; h++ ) {
+ for ( j = 0 ; j < num_accum_bits ; j++ ) {
+ *c = malloc (sizeof **c);
+ modes = &(*c)->modes;
+ c++;
+
+ memset(modes, 0, sizeof *modes);
+ 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->transparentPixel = GLX_NONE;
+ modes->transparentRed = GLX_DONT_CARE;
+ modes->transparentGreen = GLX_DONT_CARE;
+ modes->transparentBlue = GLX_DONT_CARE;
+ modes->transparentAlpha = GLX_DONT_CARE;
+ modes->transparentIndex = GLX_DONT_CARE;
+ 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->samples = msaa_samples[h];
+ modes->sampleBuffers = modes->samples ? 1 : 0;
+
+
+ modes->haveAccumBuffer = ((modes->accumRedBits +
+ modes->accumGreenBits +
+ modes->accumBlueBits +
+ modes->accumAlphaBits) > 0);
+ modes->haveDepthBuffer = (modes->depthBits > 0);
+ modes->haveStencilBuffer = (modes->stencilBits > 0);
+
+ modes->bindToTextureRgb = GL_TRUE;
+ modes->bindToTextureRgba = GL_TRUE;
+ modes->bindToMipmapTexture = GL_FALSE;
+ modes->bindToTextureTargets =
+ __DRI_ATTRIB_TEXTURE_1D_BIT |
+ __DRI_ATTRIB_TEXTURE_2D_BIT |
+ __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT;
+ }
+ }
+ }
+ }
+ *c = NULL;
+
+ return configs;
+}
+
+__DRIconfig **driConcatConfigs(__DRIconfig **a,
+ __DRIconfig **b)
+{
+ __DRIconfig **all;
+ int i, j, index;
+
+ i = 0;
+ while (a[i] != NULL)
+ i++;
+ j = 0;
+ while (b[j] != NULL)
+ j++;
+
+ all = malloc((i + j + 1) * sizeof *all);
+ index = 0;
+ for (i = 0; a[i] != NULL; i++)
+ all[index++] = a[i];
+ for (j = 0; b[j] != NULL; j++)
+ all[index++] = b[j];
+ all[index++] = NULL;
+
+ free(a);
+ free(b);
+
+ return all;
+}
+
+#define __ATTRIB(attrib, field) \
+ { attrib, offsetof(struct gl_config, field) }
+
+static const struct { unsigned int attrib, offset; } attribMap[] = {
+ __ATTRIB(__DRI_ATTRIB_BUFFER_SIZE, rgbBits),
+ __ATTRIB(__DRI_ATTRIB_LEVEL, level),
+ __ATTRIB(__DRI_ATTRIB_RED_SIZE, redBits),
+ __ATTRIB(__DRI_ATTRIB_GREEN_SIZE, greenBits),
+ __ATTRIB(__DRI_ATTRIB_BLUE_SIZE, blueBits),
+ __ATTRIB(__DRI_ATTRIB_ALPHA_SIZE, alphaBits),
+ __ATTRIB(__DRI_ATTRIB_DEPTH_SIZE, depthBits),
+ __ATTRIB(__DRI_ATTRIB_STENCIL_SIZE, stencilBits),
+ __ATTRIB(__DRI_ATTRIB_ACCUM_RED_SIZE, accumRedBits),
+ __ATTRIB(__DRI_ATTRIB_ACCUM_GREEN_SIZE, accumGreenBits),
+ __ATTRIB(__DRI_ATTRIB_ACCUM_BLUE_SIZE, accumBlueBits),
+ __ATTRIB(__DRI_ATTRIB_ACCUM_ALPHA_SIZE, accumAlphaBits),
+ __ATTRIB(__DRI_ATTRIB_SAMPLE_BUFFERS, sampleBuffers),
+ __ATTRIB(__DRI_ATTRIB_SAMPLES, samples),
+ __ATTRIB(__DRI_ATTRIB_DOUBLE_BUFFER, doubleBufferMode),
+ __ATTRIB(__DRI_ATTRIB_STEREO, stereoMode),
+ __ATTRIB(__DRI_ATTRIB_AUX_BUFFERS, numAuxBuffers),
+ __ATTRIB(__DRI_ATTRIB_TRANSPARENT_TYPE, transparentPixel),
+ __ATTRIB(__DRI_ATTRIB_TRANSPARENT_INDEX_VALUE, transparentPixel),
+ __ATTRIB(__DRI_ATTRIB_TRANSPARENT_RED_VALUE, transparentRed),
+ __ATTRIB(__DRI_ATTRIB_TRANSPARENT_GREEN_VALUE, transparentGreen),
+ __ATTRIB(__DRI_ATTRIB_TRANSPARENT_BLUE_VALUE, transparentBlue),
+ __ATTRIB(__DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE, transparentAlpha),
+ __ATTRIB(__DRI_ATTRIB_FLOAT_MODE, floatMode),
+ __ATTRIB(__DRI_ATTRIB_RED_MASK, redMask),
+ __ATTRIB(__DRI_ATTRIB_GREEN_MASK, greenMask),
+ __ATTRIB(__DRI_ATTRIB_BLUE_MASK, blueMask),
+ __ATTRIB(__DRI_ATTRIB_ALPHA_MASK, alphaMask),
+ __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_WIDTH, maxPbufferWidth),
+ __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_HEIGHT, maxPbufferHeight),
+ __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_PIXELS, maxPbufferPixels),
+ __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH, optimalPbufferWidth),
+ __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT, optimalPbufferHeight),
+ __ATTRIB(__DRI_ATTRIB_SWAP_METHOD, swapMethod),
+ __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGB, bindToTextureRgb),
+ __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGBA, bindToTextureRgba),
+ __ATTRIB(__DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE, bindToMipmapTexture),
+ __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS, bindToTextureTargets),
+ __ATTRIB(__DRI_ATTRIB_YINVERTED, yInverted),
+
+ /* The struct field doesn't matter here, these are handled by the
+ * switch in driGetConfigAttribIndex. We need them in the array
+ * so the iterator includes them though.*/
+ __ATTRIB(__DRI_ATTRIB_RENDER_TYPE, level),
+ __ATTRIB(__DRI_ATTRIB_CONFIG_CAVEAT, level),
+ __ATTRIB(__DRI_ATTRIB_SWAP_METHOD, level)
+};
+
+#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
+
+
+/**
+ * Return the value of a configuration attribute. The attribute is
+ * indicated by the index.
+ */
+static int
+driGetConfigAttribIndex(const __DRIconfig *config,
+ unsigned int index, unsigned int *value)
+{
+ switch (attribMap[index].attrib) {
+ case __DRI_ATTRIB_RENDER_TYPE:
+ /* no support for color index mode */
+ *value = __DRI_ATTRIB_RGBA_BIT;
+ break;
+ case __DRI_ATTRIB_CONFIG_CAVEAT:
+ if (config->modes.visualRating == GLX_NON_CONFORMANT_CONFIG)
+ *value = __DRI_ATTRIB_NON_CONFORMANT_CONFIG;
+ else if (config->modes.visualRating == GLX_SLOW_CONFIG)
+ *value = __DRI_ATTRIB_SLOW_BIT;
+ else
+ *value = 0;
+ break;
+ case __DRI_ATTRIB_SWAP_METHOD:
+ /* XXX no return value??? */
+ break;
+
+ case __DRI_ATTRIB_FLOAT_MODE:
+ /* this field is not int-sized */
+ *value = config->modes.floatMode;
+ break;
+
+ default:
+ /* any other int-sized field */
+ *value = *(unsigned int *)
+ ((char *) &config->modes + attribMap[index].offset);
+
+ break;
+ }
+
+ return GL_TRUE;
+}
+
+
+/**
+ * Get the value of a configuration attribute.
+ * \param attrib the attribute (one of the _DRI_ATTRIB_x tokens)
+ * \param value returns the attribute's value
+ * \return 1 for success, 0 for failure
+ */
+int
+driGetConfigAttrib(const __DRIconfig *config,
+ unsigned int attrib, unsigned int *value)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(attribMap); i++)
+ if (attribMap[i].attrib == attrib)
+ return driGetConfigAttribIndex(config, i, value);
+
+ return GL_FALSE;
+}
+
+
+/**
+ * Get a configuration attribute name and value, given an index.
+ * \param index which field of the __DRIconfig to query
+ * \param attrib returns the attribute name (one of the _DRI_ATTRIB_x tokens)
+ * \param value returns the attribute's value
+ * \return 1 for success, 0 for failure
+ */
+int
+driIndexConfigAttrib(const __DRIconfig *config, int index,
+ unsigned int *attrib, unsigned int *value)
+{
+ if (index >= 0 && index < ARRAY_SIZE(attribMap)) {
+ *attrib = attribMap[index].attrib;
+ return driGetConfigAttribIndex(config, index, value);
+ }
+
+ return GL_FALSE;
+}
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