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| /* |
| * (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 <stdbool.h> |
| #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 <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 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_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; |
| |
| 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; |
| } |