/* * (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 #include #include "main/macros.h" #include "main/mtypes.h" #include "main/cpuinfo.h" #include "main/extensions.h" #include "utils.h" #include "dri_util.h" /* WARNING: HACK: Local defines to avoid pulling glx.h. * * Any parts of this file that use the following defines are either partial or * entirely broken wrt EGL. * * For example any getConfigAttrib() or indexConfigAttrib() query from EGL for * SLOW or NON_CONFORMANT_CONFIG will not work as expected since the EGL tokens * are different from the GLX ones. */ #define GLX_NONE 0x8000 #define GLX_SLOW_CONFIG 0x8001 #define GLX_NON_CONFORMANT_CONFIG 0x800D #define GLX_DONT_CARE 0xFFFFFFFF /** * 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 mesa_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 __DRI_ATTRIB_SWAP_NONE, then it * represents a single-buffered mode. Other valid * values are \c __DRI_ATTRIB_SWAP_EXCHANGE, * \c __DRI_ATTRIB_SWAP_COPY, and \c __DRI_ATTRIB_SWAP_UNDEFINED. * They represent the respective GLX values as in * the GLX_OML_swap_method extension spec. * \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 enable_accum Add an accum buffer to the configs * \param color_depth_match Whether the color depth must match the zs depth * This forces 32-bit color to have 24-bit depth, and * 16-bit color to have 16-bit depth. * * \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(mesa_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, GLboolean color_depth_match) { static const struct { uint32_t masks[4]; int shifts[4]; } format_table[] = { /* MESA_FORMAT_B5G6R5_UNORM */ {{ 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, { 11, 5, 0, -1 }}, /* MESA_FORMAT_B8G8R8X8_UNORM */ {{ 0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000 }, { 16, 8, 0, -1 }}, /* MESA_FORMAT_B8G8R8A8_UNORM */ {{ 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000 }, { 16, 8, 0, 24 }}, /* MESA_FORMAT_B10G10R10X2_UNORM */ {{ 0x3FF00000, 0x000FFC00, 0x000003FF, 0x00000000 }, { 20, 10, 0, -1 }}, /* MESA_FORMAT_B10G10R10A2_UNORM */ {{ 0x3FF00000, 0x000FFC00, 0x000003FF, 0xC0000000 }, { 20, 10, 0, 30 }}, /* MESA_FORMAT_R8G8B8A8_UNORM */ {{ 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 }, { 0, 8, 16, 24 }}, /* MESA_FORMAT_R8G8B8X8_UNORM */ {{ 0x000000FF, 0x0000FF00, 0x00FF0000, 0x00000000 }, { 0, 8, 16, -1 }}, /* MESA_FORMAT_R10G10B10X2_UNORM */ {{ 0x000003FF, 0x000FFC00, 0x3FF00000, 0x00000000 }, { 0, 10, 20, -1 }}, /* MESA_FORMAT_R10G10B10A2_UNORM */ {{ 0x000003FF, 0x000FFC00, 0x3FF00000, 0xC0000000 }, { 0, 10, 20, 30 }}, /* MESA_FORMAT_RGBX_FLOAT16 */ {{ 0, 0, 0, 0}, { 0, 16, 32, -1 }}, /* MESA_FORMAT_RGBA_FLOAT16 */ {{ 0, 0, 0, 0}, { 0, 16, 32, 48 }}, }; const uint32_t * masks; const int * shifts; __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; bool is_float; switch (format) { case MESA_FORMAT_B5G6R5_UNORM: masks = format_table[0].masks; shifts = format_table[0].shifts; break; case MESA_FORMAT_B8G8R8X8_UNORM: case MESA_FORMAT_B8G8R8X8_SRGB: masks = format_table[1].masks; shifts = format_table[1].shifts; break; case MESA_FORMAT_B8G8R8A8_UNORM: case MESA_FORMAT_B8G8R8A8_SRGB: masks = format_table[2].masks; shifts = format_table[2].shifts; break; case MESA_FORMAT_R8G8B8A8_UNORM: case MESA_FORMAT_R8G8B8A8_SRGB: masks = format_table[5].masks; shifts = format_table[5].shifts; break; case MESA_FORMAT_R8G8B8X8_UNORM: case MESA_FORMAT_R8G8B8X8_SRGB: masks = format_table[6].masks; shifts = format_table[6].shifts; break; case MESA_FORMAT_B10G10R10X2_UNORM: masks = format_table[3].masks; shifts = format_table[3].shifts; break; case MESA_FORMAT_B10G10R10A2_UNORM: masks = format_table[4].masks; shifts = format_table[4].shifts; break; case MESA_FORMAT_RGBX_FLOAT16: masks = format_table[9].masks; shifts = format_table[9].shifts; break; case MESA_FORMAT_RGBA_FLOAT16: masks = format_table[10].masks; shifts = format_table[10].shifts; break; case MESA_FORMAT_R10G10B10X2_UNORM: masks = format_table[7].masks; shifts = format_table[7].shifts; break; case MESA_FORMAT_R10G10B10A2_UNORM: masks = format_table[8].masks; shifts = format_table[8].shifts; break; default: fprintf(stderr, "[%s:%u] Unknown framebuffer type %s (%d).\n", __func__, __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_is_format_srgb(format); is_float = _mesa_get_format_datatype(format) == GL_FLOAT; num_modes = num_depth_stencil_bits * num_db_modes * num_accum_bits * num_msaa_modes; configs = calloc(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++ ) { if (color_depth_match && (depth_bits[k] || stencil_bits[k])) { /* Depth can really only be 0, 16, 24, or 32. A 32-bit * color format still matches 24-bit depth, as there * is an implicit 8-bit stencil. So really we just * need to make sure that color/depth are both 16 or * both non-16. */ if ((depth_bits[k] + stencil_bits[k] == 16) != (red_bits + green_bits + blue_bits + alpha_bits == 16)) continue; } *c = malloc (sizeof **c); modes = &(*c)->modes; c++; memset(modes, 0, sizeof *modes); modes->floatMode = is_float; 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->redShift = shifts[0]; modes->greenShift = shifts[1]; modes->blueShift = shifts[2]; modes->alphaShift = shifts[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 = 16 * j; modes->stencilBits = stencil_bits[k]; modes->depthBits = depth_bits[k]; if (db_modes[i] == __DRI_ATTRIB_SWAP_NONE) { modes->doubleBufferMode = GL_FALSE; modes->swapMethod = __DRI_ATTRIB_SWAP_UNDEFINED; } else { modes->doubleBufferMode = GL_TRUE; modes->swapMethod = db_modes[i]; } modes->samples = msaa_samples[h]; 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) case attrib: *value = config->modes.field; break /** * 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 (index + 1) { __ATTRIB(__DRI_ATTRIB_BUFFER_SIZE, rgbBits); __ATTRIB(__DRI_ATTRIB_RED_SIZE, redBits); __ATTRIB(__DRI_ATTRIB_GREEN_SIZE, greenBits); __ATTRIB(__DRI_ATTRIB_BLUE_SIZE, blueBits); case __DRI_ATTRIB_LEVEL: case __DRI_ATTRIB_LUMINANCE_SIZE: case __DRI_ATTRIB_AUX_BUFFERS: *value = 0; break; __ATTRIB(__DRI_ATTRIB_ALPHA_SIZE, alphaBits); case __DRI_ATTRIB_ALPHA_MASK_SIZE: /* I have no idea what this value was ever meant to mean, it's * never been set to anything, just say 0. */ *value = 0; break; __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); case __DRI_ATTRIB_SAMPLE_BUFFERS: *value = !!config->modes.samples; break; __ATTRIB(__DRI_ATTRIB_SAMPLES, samples); case __DRI_ATTRIB_RENDER_TYPE: /* no support for color index mode */ *value = __DRI_ATTRIB_RGBA_BIT; if (config->modes.floatMode) *value |= __DRI_ATTRIB_FLOAT_BIT; break; case __DRI_ATTRIB_CONFIG_CAVEAT: if (config->modes.accumRedBits != 0) *value = __DRI_ATTRIB_SLOW_BIT; else *value = 0; break; case __DRI_ATTRIB_CONFORMANT: *value = GL_TRUE; break; __ATTRIB(__DRI_ATTRIB_DOUBLE_BUFFER, doubleBufferMode); __ATTRIB(__DRI_ATTRIB_STEREO, stereoMode); case __DRI_ATTRIB_TRANSPARENT_TYPE: case __DRI_ATTRIB_TRANSPARENT_INDEX_VALUE: /* horrible bc hack */ *value = GLX_NONE; break; case __DRI_ATTRIB_TRANSPARENT_RED_VALUE: case __DRI_ATTRIB_TRANSPARENT_GREEN_VALUE: case __DRI_ATTRIB_TRANSPARENT_BLUE_VALUE: case __DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE: *value = GLX_DONT_CARE; break; case __DRI_ATTRIB_FLOAT_MODE: *value = config->modes.floatMode; break; __ATTRIB(__DRI_ATTRIB_RED_MASK, redMask); __ATTRIB(__DRI_ATTRIB_GREEN_MASK, greenMask); __ATTRIB(__DRI_ATTRIB_BLUE_MASK, blueMask); __ATTRIB(__DRI_ATTRIB_ALPHA_MASK, alphaMask); case __DRI_ATTRIB_MAX_PBUFFER_WIDTH: case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT: case __DRI_ATTRIB_MAX_PBUFFER_PIXELS: case __DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH: case __DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT: case __DRI_ATTRIB_VISUAL_SELECT_GROUP: *value = 0; break; __ATTRIB(__DRI_ATTRIB_SWAP_METHOD, swapMethod); case __DRI_ATTRIB_MAX_SWAP_INTERVAL: *value = INT_MAX; break; case __DRI_ATTRIB_MIN_SWAP_INTERVAL: *value = 0; break; case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB: case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA: case __DRI_ATTRIB_YINVERTED: *value = GL_TRUE; break; case __DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE: *value = GL_FALSE; break; case __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS: *value = __DRI_ATTRIB_TEXTURE_1D_BIT | __DRI_ATTRIB_TEXTURE_2D_BIT | __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT; break; __ATTRIB(__DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE, sRGBCapable); case __DRI_ATTRIB_MUTABLE_RENDER_BUFFER: *value = GL_FALSE; break; __ATTRIB(__DRI_ATTRIB_RED_SHIFT, redShift); __ATTRIB(__DRI_ATTRIB_GREEN_SHIFT, greenShift); __ATTRIB(__DRI_ATTRIB_BLUE_SHIFT, blueShift); __ATTRIB(__DRI_ATTRIB_ALPHA_SHIFT, alphaShift); default: /* XXX log an error or smth */ return GL_FALSE; } 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) { return driGetConfigAttribIndex(config, attrib - 1, value); } /** * 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 (driGetConfigAttribIndex(config, index, value)) { *attrib = index + 1; return GL_TRUE; } return GL_FALSE; } /** * Implement queries for values that are common across all Mesa drivers * * Currently only the following queries are supported by this function: * * - \c __DRI2_RENDERER_VERSION * - \c __DRI2_RENDERER_PREFERRED_PROFILE * - \c __DRI2_RENDERER_OPENGL_CORE_PROFILE_VERSION * - \c __DRI2_RENDERER_OPENGL_COMPATIBLITY_PROFILE_VERSION * - \c __DRI2_RENDERER_ES_PROFILE_VERSION * - \c __DRI2_RENDERER_ES2_PROFILE_VERSION * * \returns * Zero if a recognized value of \c param is supplied, -1 otherwise. */ int driQueryRendererIntegerCommon(__DRIscreen *psp, int param, unsigned int *value) { switch (param) { case __DRI2_RENDERER_VERSION: { static const char *const ver = PACKAGE_VERSION; char *endptr; int v[3]; v[0] = strtol(ver, &endptr, 10); assert(endptr[0] == '.'); if (endptr[0] != '.') return -1; v[1] = strtol(endptr + 1, &endptr, 10); assert(endptr[0] == '.'); if (endptr[0] != '.') return -1; v[2] = strtol(endptr + 1, &endptr, 10); value[0] = v[0]; value[1] = v[1]; value[2] = v[2]; return 0; } case __DRI2_RENDERER_PREFERRED_PROFILE: value[0] = (psp->max_gl_core_version != 0) ? (1U << __DRI_API_OPENGL_CORE) : (1U << __DRI_API_OPENGL); return 0; case __DRI2_RENDERER_OPENGL_CORE_PROFILE_VERSION: value[0] = psp->max_gl_core_version / 10; value[1] = psp->max_gl_core_version % 10; return 0; case __DRI2_RENDERER_OPENGL_COMPATIBILITY_PROFILE_VERSION: value[0] = psp->max_gl_compat_version / 10; value[1] = psp->max_gl_compat_version % 10; return 0; case __DRI2_RENDERER_OPENGL_ES_PROFILE_VERSION: value[0] = psp->max_gl_es1_version / 10; value[1] = psp->max_gl_es1_version % 10; return 0; case __DRI2_RENDERER_OPENGL_ES2_PROFILE_VERSION: value[0] = psp->max_gl_es2_version / 10; value[1] = psp->max_gl_es2_version % 10; return 0; default: break; } return -1; }