/* * (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 */ #include #include #include #include "main/macros.h" #include "main/mtypes.h" #include "main/cpuinfo.h" #include "main/extensions.h" #include "utils.h" 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 " * * 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 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, GLuint agp_mode ) { unsigned offset; char *cpu; offset = sprintf( buffer, "Mesa DRI %s", hardware_name ); /* 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; } /** * 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 format Mesa gl_format enum describing the pixel format * \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 * Pointer to any array of pointers to the \c __DRIconfig structures created * for the specified formats. If there is an error, \c NULL is returned. * Currently the only cause of failure is a bad parameter (i.e., unsupported * \c format). */ __DRIconfig ** driCreateConfigs(gl_format format, 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 uint32_t masks_table[][4] = { /* MESA_FORMAT_RGB565 */ { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* MESA_FORMAT_XRGB8888 */ { 0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000 }, /* MESA_FORMAT_ARGB8888 */ { 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000 }, }; const uint32_t * masks; __DRIconfig **configs, **c; struct gl_config *modes; unsigned i, j, k, h; unsigned num_modes; unsigned num_accum_bits = (enable_accum) ? 2 : 1; int red_bits; int green_bits; int blue_bits; int alpha_bits; bool is_srgb; switch (format) { case MESA_FORMAT_RGB565: masks = masks_table[0]; break; case MESA_FORMAT_XRGB8888: masks = masks_table[1]; break; case MESA_FORMAT_ARGB8888: case MESA_FORMAT_SARGB8: masks = masks_table[2]; break; default: fprintf(stderr, "[%s:%u] Unknown framebuffer type %s (%d).\n", __FUNCTION__, __LINE__, _mesa_get_format_name(format), format); return NULL; } red_bits = _mesa_get_format_bits(format, GL_RED_BITS); green_bits = _mesa_get_format_bits(format, GL_GREEN_BITS); blue_bits = _mesa_get_format_bits(format, GL_BLUE_BITS); alpha_bits = _mesa_get_format_bits(format, GL_ALPHA_BITS); is_srgb = _mesa_get_format_color_encoding(format) == GL_SRGB; 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 = red_bits; modes->greenBits = green_bits; modes->blueBits = blue_bits; modes->alphaBits = alpha_bits; 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; modes->sRGBCapable = is_srgb; } } } } *c = NULL; return configs; } __DRIconfig **driConcatConfigs(__DRIconfig **a, __DRIconfig **b) { __DRIconfig **all; int i, j, index; if (a == NULL || a[0] == NULL) return b; else if (b == NULL || b[0] == NULL) return a; 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), __ATTRIB(__DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE, sRGBCapable), /* 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) }; /** * 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; }