diff options
Diffstat (limited to 'mesalib/src/mesa/drivers/dri/swrast/swrast.c')
| -rw-r--r-- | mesalib/src/mesa/drivers/dri/swrast/swrast.c | 1640 |
1 files changed, 820 insertions, 820 deletions
diff --git a/mesalib/src/mesa/drivers/dri/swrast/swrast.c b/mesalib/src/mesa/drivers/dri/swrast/swrast.c index 63b3fe94c..13a13eade 100644 --- a/mesalib/src/mesa/drivers/dri/swrast/swrast.c +++ b/mesalib/src/mesa/drivers/dri/swrast/swrast.c @@ -1,820 +1,820 @@ -/*
- * Copyright 2008, 2010 George Sapountzis <gsapountzis@gmail.com>
- *
- * 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
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL 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.
- */
-
-/*
- * DRI software rasterizer
- *
- * This is the mesa swrast module packaged into a DRI driver structure.
- *
- * The front-buffer is allocated by the loader. The loader provides read/write
- * callbacks for access to the front-buffer. The driver uses a scratch row for
- * front-buffer rendering to avoid repeated calls to the loader.
- *
- * The back-buffer is allocated by the driver and is private.
- */
-
-#ifdef _MSC_VER
-#define WIN32_LEAN_AND_MEAN 1
-#include <windows.h>
-#endif
-
-#include "main/context.h"
-#include "main/extensions.h"
-#include "main/formats.h"
-#include "main/framebuffer.h"
-#include "main/imports.h"
-#include "main/renderbuffer.h"
-#include "swrast/swrast.h"
-#include "swrast_setup/swrast_setup.h"
-#include "tnl/tnl.h"
-#include "tnl/t_context.h"
-#include "tnl/t_pipeline.h"
-#include "vbo/vbo.h"
-#include "drivers/common/driverfuncs.h"
-#include "drivers/common/meta.h"
-#include "utils.h"
-
-#include "main/teximage.h"
-#include "main/texformat.h"
-#include "main/texstate.h"
-
-#include "swrast_priv.h"
-
-
-/**
- * Screen and config-related functions
- */
-
-static void swrastSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
- GLint texture_format, __DRIdrawable *dPriv)
-{
- struct dri_context *dri_ctx;
- int x, y, w, h;
- __DRIscreen *sPriv = dPriv->driScreenPriv;
- struct gl_texture_unit *texUnit;
- struct gl_texture_object *texObj;
- struct gl_texture_image *texImage;
- uint32_t internalFormat;
- gl_format texFormat;
-
- dri_ctx = pDRICtx->driverPrivate;
-
- internalFormat = (texture_format == __DRI_TEXTURE_FORMAT_RGB ? 3 : 4);
-
- texUnit = _mesa_get_current_tex_unit(&dri_ctx->Base);
- texObj = _mesa_select_tex_object(&dri_ctx->Base, texUnit, target);
- texImage = _mesa_get_tex_image(&dri_ctx->Base, texObj, target, 0);
-
- _mesa_lock_texture(&dri_ctx->Base, texObj);
-
- sPriv->swrast_loader->getDrawableInfo(dPriv, &x, &y, &w, &h, dPriv->loaderPrivate);
-
- if (texture_format == __DRI_TEXTURE_FORMAT_RGB)
- texFormat = MESA_FORMAT_XRGB8888;
- else
- texFormat = MESA_FORMAT_ARGB8888;
-
- _mesa_init_teximage_fields(&dri_ctx->Base, target, texImage,
- w, h, 1, 0, internalFormat, texFormat);
-
- sPriv->swrast_loader->getImage(dPriv, x, y, w, h, (char *)texImage->Data,
- dPriv->loaderPrivate);
-
- _mesa_unlock_texture(&dri_ctx->Base, texObj);
-}
-
-static void swrastSetTexBuffer(__DRIcontext *pDRICtx, GLint target,
- __DRIdrawable *dPriv)
-{
- swrastSetTexBuffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
-}
-
-static const __DRItexBufferExtension swrastTexBufferExtension = {
- { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
- swrastSetTexBuffer,
- swrastSetTexBuffer2,
-};
-
-static const __DRIextension *dri_screen_extensions[] = {
- &swrastTexBufferExtension.base,
- NULL
-};
-
-static __DRIconfig **
-swrastFillInModes(__DRIscreen *psp,
- unsigned pixel_bits, unsigned depth_bits,
- unsigned stencil_bits, GLboolean have_back_buffer)
-{
- __DRIconfig **configs;
- unsigned depth_buffer_factor;
- unsigned back_buffer_factor;
- GLenum fb_format;
- GLenum fb_type;
-
- /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
- * support pageflipping at all.
- */
- static const GLenum back_buffer_modes[] = {
- GLX_NONE, GLX_SWAP_UNDEFINED_OML
- };
-
- uint8_t depth_bits_array[4];
- uint8_t stencil_bits_array[4];
- uint8_t msaa_samples_array[1];
-
- (void) psp;
- (void) have_back_buffer;
-
- depth_bits_array[0] = 0;
- depth_bits_array[1] = 0;
- depth_bits_array[2] = depth_bits;
- depth_bits_array[3] = depth_bits;
-
- /* Just like with the accumulation buffer, always provide some modes
- * with a stencil buffer.
- */
- stencil_bits_array[0] = 0;
- stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
- stencil_bits_array[2] = 0;
- stencil_bits_array[3] = (stencil_bits == 0) ? 8 : stencil_bits;
-
- msaa_samples_array[0] = 0;
-
- depth_buffer_factor = 4;
- back_buffer_factor = 2;
-
- switch (pixel_bits) {
- case 8:
- fb_format = GL_RGB;
- fb_type = GL_UNSIGNED_BYTE_2_3_3_REV;
- break;
- case 16:
- fb_format = GL_RGB;
- fb_type = GL_UNSIGNED_SHORT_5_6_5;
- break;
- case 24:
- fb_format = GL_BGR;
- fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
- break;
- case 32:
- fb_format = GL_BGRA;
- fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
- break;
- default:
- fprintf(stderr, "[%s:%u] bad depth %d\n", __FUNCTION__, __LINE__,
- pixel_bits);
- return NULL;
- }
-
- configs = driCreateConfigs(fb_format, fb_type,
- depth_bits_array, stencil_bits_array,
- depth_buffer_factor, back_buffer_modes,
- back_buffer_factor, msaa_samples_array, 1,
- GL_TRUE);
- if (configs == NULL) {
- fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __FUNCTION__,
- __LINE__);
- return NULL;
- }
-
- return configs;
-}
-
-static const __DRIconfig **
-dri_init_screen(__DRIscreen * psp)
-{
- __DRIconfig **configs8, **configs16, **configs24, **configs32;
-
- TRACE;
-
- psp->extensions = dri_screen_extensions;
-
- configs8 = swrastFillInModes(psp, 8, 8, 0, 1);
- configs16 = swrastFillInModes(psp, 16, 16, 0, 1);
- configs24 = swrastFillInModes(psp, 24, 24, 8, 1);
- configs32 = swrastFillInModes(psp, 32, 24, 8, 1);
-
- configs16 = driConcatConfigs(configs8, configs16);
- configs24 = driConcatConfigs(configs16, configs24);
- configs32 = driConcatConfigs(configs24, configs32);
-
- return (const __DRIconfig **)configs32;
-}
-
-static void
-dri_destroy_screen(__DRIscreen * sPriv)
-{
- TRACE;
- (void) sPriv;
-}
-
-
-/**
- * Framebuffer and renderbuffer-related functions.
- */
-
-static GLuint
-choose_pixel_format(const struct gl_config *v)
-{
- int depth = v->rgbBits;
-
- if (depth == 32
- && v->redMask == 0xff0000
- && v->greenMask == 0x00ff00
- && v->blueMask == 0x0000ff)
- return PF_A8R8G8B8;
- else if (depth == 24
- && v->redMask == 0xff0000
- && v->greenMask == 0x00ff00
- && v->blueMask == 0x0000ff)
- return PF_X8R8G8B8;
- else if (depth == 16
- && v->redMask == 0xf800
- && v->greenMask == 0x07e0
- && v->blueMask == 0x001f)
- return PF_R5G6B5;
- else if (depth == 8
- && v->redMask == 0x07
- && v->greenMask == 0x38
- && v->blueMask == 0xc0)
- return PF_R3G3B2;
-
- _mesa_problem( NULL, "unexpected format in %s", __FUNCTION__ );
- return 0;
-}
-
-static void
-swrast_delete_renderbuffer(struct gl_renderbuffer *rb)
-{
- TRACE;
-
- free(rb->Data);
- free(rb);
-}
-
-/* see bytes_per_line in libGL */
-static INLINE int
-bytes_per_line(unsigned pitch_bits, unsigned mul)
-{
- unsigned mask = mul - 1;
-
- return ((pitch_bits + mask) & ~mask) / 8;
-}
-
-static GLboolean
-swrast_alloc_front_storage(struct gl_context *ctx, struct gl_renderbuffer *rb,
- GLenum internalFormat, GLuint width, GLuint height)
-{
- struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
-
- TRACE;
-
- (void) ctx;
- (void) internalFormat;
-
- rb->Data = NULL;
- rb->Width = width;
- rb->Height = height;
-
- xrb->pitch = bytes_per_line(width * xrb->bpp, 32);
-
- return GL_TRUE;
-}
-
-static GLboolean
-swrast_alloc_back_storage(struct gl_context *ctx, struct gl_renderbuffer *rb,
- GLenum internalFormat, GLuint width, GLuint height)
-{
- struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
-
- TRACE;
-
- free(rb->Data);
-
- swrast_alloc_front_storage(ctx, rb, internalFormat, width, height);
-
- rb->Data = malloc(height * xrb->pitch);
-
- return GL_TRUE;
-}
-
-static struct swrast_renderbuffer *
-swrast_new_renderbuffer(const struct gl_config *visual, GLboolean front)
-{
- struct swrast_renderbuffer *xrb = calloc(1, sizeof *xrb);
- GLuint pixel_format;
-
- TRACE;
-
- if (!xrb)
- return NULL;
-
- _mesa_init_renderbuffer(&xrb->Base, 0);
-
- pixel_format = choose_pixel_format(visual);
-
- xrb->Base.Delete = swrast_delete_renderbuffer;
- if (front) {
- xrb->Base.AllocStorage = swrast_alloc_front_storage;
- swrast_set_span_funcs_front(xrb, pixel_format);
- }
- else {
- xrb->Base.AllocStorage = swrast_alloc_back_storage;
- swrast_set_span_funcs_back(xrb, pixel_format);
- }
-
- switch (pixel_format) {
- case PF_A8R8G8B8:
- xrb->Base.Format = MESA_FORMAT_ARGB8888;
- xrb->Base.InternalFormat = GL_RGBA;
- xrb->Base._BaseFormat = GL_RGBA;
- xrb->Base.DataType = GL_UNSIGNED_BYTE;
- xrb->bpp = 32;
- break;
- case PF_X8R8G8B8:
- xrb->Base.Format = MESA_FORMAT_ARGB8888; /* XXX */
- xrb->Base.InternalFormat = GL_RGB;
- xrb->Base._BaseFormat = GL_RGB;
- xrb->Base.DataType = GL_UNSIGNED_BYTE;
- xrb->bpp = 32;
- break;
- case PF_R5G6B5:
- xrb->Base.Format = MESA_FORMAT_RGB565;
- xrb->Base.InternalFormat = GL_RGB;
- xrb->Base._BaseFormat = GL_RGB;
- xrb->Base.DataType = GL_UNSIGNED_BYTE;
- xrb->bpp = 16;
- break;
- case PF_R3G3B2:
- xrb->Base.Format = MESA_FORMAT_RGB332;
- xrb->Base.InternalFormat = GL_RGB;
- xrb->Base._BaseFormat = GL_RGB;
- xrb->Base.DataType = GL_UNSIGNED_BYTE;
- xrb->bpp = 8;
- break;
- default:
- return NULL;
- }
-
- return xrb;
-}
-
-static GLboolean
-dri_create_buffer(__DRIscreen * sPriv,
- __DRIdrawable * dPriv,
- const struct gl_config * visual, GLboolean isPixmap)
-{
- struct dri_drawable *drawable = NULL;
- struct gl_framebuffer *fb;
- struct swrast_renderbuffer *frontrb, *backrb;
-
- TRACE;
-
- (void) sPriv;
- (void) isPixmap;
-
- drawable = CALLOC_STRUCT(dri_drawable);
- if (drawable == NULL)
- goto drawable_fail;
-
- dPriv->driverPrivate = drawable;
- drawable->dPriv = dPriv;
-
- drawable->row = malloc(MAX_WIDTH * 4);
- if (drawable->row == NULL)
- goto drawable_fail;
-
- fb = &drawable->Base;
-
- /* basic framebuffer setup */
- _mesa_initialize_window_framebuffer(fb, visual);
-
- /* add front renderbuffer */
- frontrb = swrast_new_renderbuffer(visual, GL_TRUE);
- _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontrb->Base);
-
- /* add back renderbuffer */
- if (visual->doubleBufferMode) {
- backrb = swrast_new_renderbuffer(visual, GL_FALSE);
- _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backrb->Base);
- }
-
- /* add software renderbuffers */
- _mesa_add_soft_renderbuffers(fb,
- GL_FALSE, /* color */
- visual->haveDepthBuffer,
- visual->haveStencilBuffer,
- visual->haveAccumBuffer,
- GL_FALSE, /* alpha */
- GL_FALSE /* aux bufs */);
-
- return GL_TRUE;
-
-drawable_fail:
-
- if (drawable)
- free(drawable->row);
-
- FREE(drawable);
-
- return GL_FALSE;
-}
-
-static void
-dri_destroy_buffer(__DRIdrawable * dPriv)
-{
- TRACE;
-
- if (dPriv) {
- struct dri_drawable *drawable = dri_drawable(dPriv);
- struct gl_framebuffer *fb;
-
- free(drawable->row);
-
- fb = &drawable->Base;
-
- fb->DeletePending = GL_TRUE;
- _mesa_reference_framebuffer(&fb, NULL);
- }
-}
-
-static void
-dri_swap_buffers(__DRIdrawable * dPriv)
-{
- __DRIscreen *sPriv = dPriv->driScreenPriv;
-
- GET_CURRENT_CONTEXT(ctx);
-
- struct dri_drawable *drawable = dri_drawable(dPriv);
- struct gl_framebuffer *fb;
- struct swrast_renderbuffer *frontrb, *backrb;
-
- TRACE;
-
- fb = &drawable->Base;
-
- frontrb =
- swrast_renderbuffer(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer);
- backrb =
- swrast_renderbuffer(fb->Attachment[BUFFER_BACK_LEFT].Renderbuffer);
-
- /* check for signle-buffered */
- if (backrb == NULL)
- return;
-
- /* check if swapping currently bound buffer */
- if (ctx && ctx->DrawBuffer == fb) {
- /* flush pending rendering */
- _mesa_notifySwapBuffers(ctx);
- }
-
- sPriv->swrast_loader->putImage(dPriv, __DRI_SWRAST_IMAGE_OP_SWAP,
- 0, 0,
- frontrb->Base.Width,
- frontrb->Base.Height,
- backrb->Base.Data,
- dPriv->loaderPrivate);
-}
-
-
-/**
- * General device driver functions.
- */
-
-static void
-get_window_size( struct gl_framebuffer *fb, GLsizei *w, GLsizei *h )
-{
- __DRIdrawable *dPriv = swrast_drawable(fb)->dPriv;
- __DRIscreen *sPriv = dPriv->driScreenPriv;
- int x, y;
-
- sPriv->swrast_loader->getDrawableInfo(dPriv,
- &x, &y, w, h,
- dPriv->loaderPrivate);
-}
-
-static void
-swrast_check_and_update_window_size( struct gl_context *ctx, struct gl_framebuffer *fb )
-{
- GLsizei width, height;
-
- get_window_size(fb, &width, &height);
- if (fb->Width != width || fb->Height != height) {
- _mesa_resize_framebuffer(ctx, fb, width, height);
- }
-}
-
-static const GLubyte *
-get_string(struct gl_context *ctx, GLenum pname)
-{
- (void) ctx;
- switch (pname) {
- case GL_VENDOR:
- return (const GLubyte *) "Mesa Project";
- case GL_RENDERER:
- return (const GLubyte *) "Software Rasterizer";
- default:
- return NULL;
- }
-}
-
-static void
-update_state( struct gl_context *ctx, GLuint new_state )
-{
- /* not much to do here - pass it on */
- _swrast_InvalidateState( ctx, new_state );
- _swsetup_InvalidateState( ctx, new_state );
- _vbo_InvalidateState( ctx, new_state );
- _tnl_InvalidateState( ctx, new_state );
-}
-
-static void
-viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
-{
- struct gl_framebuffer *draw = ctx->WinSysDrawBuffer;
- struct gl_framebuffer *read = ctx->WinSysReadBuffer;
-
- (void) x;
- (void) y;
- (void) w;
- (void) h;
- swrast_check_and_update_window_size(ctx, draw);
- swrast_check_and_update_window_size(ctx, read);
-}
-
-static gl_format swrastChooseTextureFormat(struct gl_context * ctx,
- GLint internalFormat,
- GLenum format,
- GLenum type)
-{
- if (internalFormat == GL_RGB)
- return MESA_FORMAT_XRGB8888;
- return _mesa_choose_tex_format(ctx, internalFormat, format, type);
-}
-
-static void
-swrast_init_driver_functions(struct dd_function_table *driver)
-{
- driver->GetString = get_string;
- driver->UpdateState = update_state;
- driver->GetBufferSize = NULL;
- driver->Viewport = viewport;
- driver->ChooseTextureFormat = swrastChooseTextureFormat;
-}
-
-static const char *es2_extensions[] = {
- /* Used by mesa internally (cf all_mesa_extensions in ../common/utils.c) */
- "GL_ARB_draw_buffers",
- "GL_ARB_multisample",
- "GL_ARB_texture_compression",
- "GL_ARB_transpose_matrix",
- "GL_ARB_vertex_buffer_object",
- "GL_ARB_window_pos",
- "GL_EXT_blend_func_separate",
- "GL_EXT_compiled_vertex_array",
- "GL_EXT_framebuffer_blit",
- "GL_EXT_multi_draw_arrays",
- "GL_EXT_polygon_offset",
- "GL_EXT_texture_object",
- "GL_EXT_vertex_array",
- "GL_IBM_multimode_draw_arrays",
- "GL_MESA_window_pos",
- "GL_NV_vertex_program",
-
- /* Required by GLES2 */
- "GL_ARB_fragment_program",
- "GL_ARB_fragment_shader",
- "GL_ARB_multitexture",
- "GL_ARB_shader_objects",
- "GL_ARB_texture_cube_map",
- "GL_ARB_texture_mirrored_repeat",
- "GL_ARB_texture_non_power_of_two",
- "GL_ARB_vertex_shader",
- "GL_EXT_blend_color",
- "GL_EXT_blend_equation_separate",
- "GL_EXT_blend_minmax",
- "GL_EXT_blend_subtract",
- "GL_EXT_stencil_wrap",
-
- /* Optional GLES2 */
- "GL_ARB_framebuffer_object",
- "GL_EXT_texture_filter_anisotropic",
- "GL_ARB_depth_texture",
- "GL_EXT_packed_depth_stencil",
- "GL_EXT_framebuffer_object",
- NULL,
-};
-
-static void
-InitExtensionsES2(struct gl_context *ctx)
-{
- int i;
-
- for (i = 0; es2_extensions[i]; i++)
- _mesa_enable_extension(ctx, es2_extensions[i]);
-}
-
-/**
- * Context-related functions.
- */
-
-static GLboolean
-dri_create_context(gl_api api,
- const struct gl_config * visual,
- __DRIcontext * cPriv, void *sharedContextPrivate)
-{
- struct dri_context *ctx = NULL;
- struct dri_context *share = (struct dri_context *)sharedContextPrivate;
- struct gl_context *mesaCtx = NULL;
- struct gl_context *sharedCtx = NULL;
- struct dd_function_table functions;
-
- TRACE;
-
- ctx = CALLOC_STRUCT(dri_context);
- if (ctx == NULL)
- goto context_fail;
-
- cPriv->driverPrivate = ctx;
- ctx->cPriv = cPriv;
-
- /* build table of device driver functions */
- _mesa_init_driver_functions(&functions);
- swrast_init_driver_functions(&functions);
-
- if (share) {
- sharedCtx = &share->Base;
- }
-
- mesaCtx = &ctx->Base;
-
- /* basic context setup */
- if (!_mesa_initialize_context(mesaCtx, api, visual, sharedCtx, &functions, (void *) cPriv)) {
- goto context_fail;
- }
-
- /* do bounds checking to prevent segfaults and server crashes! */
- mesaCtx->Const.CheckArrayBounds = GL_TRUE;
-
- /* create module contexts */
- _swrast_CreateContext( mesaCtx );
- _vbo_CreateContext( mesaCtx );
- _tnl_CreateContext( mesaCtx );
- _swsetup_CreateContext( mesaCtx );
- _swsetup_Wakeup( mesaCtx );
-
- /* use default TCL pipeline */
- {
- TNLcontext *tnl = TNL_CONTEXT(mesaCtx);
- tnl->Driver.RunPipeline = _tnl_run_pipeline;
- }
-
- _mesa_meta_init(mesaCtx);
- _mesa_enable_sw_extensions(mesaCtx);
-
- switch (api) {
- case API_OPENGL:
- _mesa_enable_1_3_extensions(mesaCtx);
- _mesa_enable_1_4_extensions(mesaCtx);
- _mesa_enable_1_5_extensions(mesaCtx);
- _mesa_enable_2_0_extensions(mesaCtx);
- _mesa_enable_2_1_extensions(mesaCtx);
- break;
- case API_OPENGLES:
- _mesa_enable_1_3_extensions(mesaCtx);
- _mesa_enable_1_4_extensions(mesaCtx);
- _mesa_enable_1_5_extensions(mesaCtx);
-
- break;
- case API_OPENGLES2:
- InitExtensionsES2( mesaCtx);
- break;
- }
-
- return GL_TRUE;
-
-context_fail:
-
- FREE(ctx);
-
- return GL_FALSE;
-}
-
-static void
-dri_destroy_context(__DRIcontext * cPriv)
-{
- TRACE;
-
- if (cPriv) {
- struct dri_context *ctx = dri_context(cPriv);
- struct gl_context *mesaCtx;
-
- mesaCtx = &ctx->Base;
-
- _mesa_meta_free(mesaCtx);
- _swsetup_DestroyContext( mesaCtx );
- _swrast_DestroyContext( mesaCtx );
- _tnl_DestroyContext( mesaCtx );
- _vbo_DestroyContext( mesaCtx );
- _mesa_destroy_context( mesaCtx );
- }
-}
-
-static GLboolean
-dri_make_current(__DRIcontext * cPriv,
- __DRIdrawable * driDrawPriv,
- __DRIdrawable * driReadPriv)
-{
- struct gl_context *mesaCtx;
- struct gl_framebuffer *mesaDraw;
- struct gl_framebuffer *mesaRead;
- TRACE;
-
- if (cPriv) {
- struct dri_context *ctx = dri_context(cPriv);
- struct dri_drawable *draw;
- struct dri_drawable *read;
-
- if (!driDrawPriv || !driReadPriv)
- return GL_FALSE;
-
- draw = dri_drawable(driDrawPriv);
- read = dri_drawable(driReadPriv);
- mesaCtx = &ctx->Base;
- mesaDraw = &draw->Base;
- mesaRead = &read->Base;
-
- /* check for same context and buffer */
- if (mesaCtx == _mesa_get_current_context()
- && mesaCtx->DrawBuffer == mesaDraw
- && mesaCtx->ReadBuffer == mesaRead) {
- return GL_TRUE;
- }
-
- _glapi_check_multithread();
-
- swrast_check_and_update_window_size(mesaCtx, mesaDraw);
- if (mesaRead != mesaDraw)
- swrast_check_and_update_window_size(mesaCtx, mesaRead);
-
- _mesa_make_current( mesaCtx,
- mesaDraw,
- mesaRead );
- }
- else {
- /* unbind */
- _mesa_make_current( NULL, NULL, NULL );
- }
-
- return GL_TRUE;
-}
-
-static GLboolean
-dri_unbind_context(__DRIcontext * cPriv)
-{
- TRACE;
- (void) cPriv;
-
- /* Unset current context and dispath table */
- _mesa_make_current(NULL, NULL, NULL);
-
- return GL_TRUE;
-}
-
-
-const struct __DriverAPIRec driDriverAPI = {
- /*.InitScreen = */dri_init_screen,
- /*.DestroyScreen = */dri_destroy_screen,
- /*.CreateContext = */dri_create_context,
- /*.DestroyContext = */dri_destroy_context,
- /*.CreateBuffer = */dri_create_buffer,
- /*.DestroyBuffer = */dri_destroy_buffer,
- /*.SwapBuffers = */dri_swap_buffers,
- /*.MakeCurrent = */dri_make_current,
- /*.UnbindContext = */dri_unbind_context,
-};
-
-/* This is the table of extensions that the loader will dlsym() for. */
-PUBLIC const __DRIextension *__driDriverExtensions[] = {
- &driCoreExtension.base,
- &driSWRastExtension.base,
- NULL
-};
+/* + * Copyright 2008, 2010 George Sapountzis <gsapountzis@gmail.com> + * + * 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 + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL 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. + */ + +/* + * DRI software rasterizer + * + * This is the mesa swrast module packaged into a DRI driver structure. + * + * The front-buffer is allocated by the loader. The loader provides read/write + * callbacks for access to the front-buffer. The driver uses a scratch row for + * front-buffer rendering to avoid repeated calls to the loader. + * + * The back-buffer is allocated by the driver and is private. + */ + +#ifdef _MSC_VER +#define WIN32_LEAN_AND_MEAN 1 +#include <windows.h> +#endif + +#include "main/context.h" +#include "main/extensions.h" +#include "main/formats.h" +#include "main/framebuffer.h" +#include "main/imports.h" +#include "main/renderbuffer.h" +#include "swrast/swrast.h" +#include "swrast_setup/swrast_setup.h" +#include "tnl/tnl.h" +#include "tnl/t_context.h" +#include "tnl/t_pipeline.h" +#include "vbo/vbo.h" +#include "drivers/common/driverfuncs.h" +#include "drivers/common/meta.h" +#include "utils.h" + +#include "main/teximage.h" +#include "main/texformat.h" +#include "main/texstate.h" + +#include "swrast_priv.h" + + +/** + * Screen and config-related functions + */ + +static void swrastSetTexBuffer2(__DRIcontext *pDRICtx, GLint target, + GLint texture_format, __DRIdrawable *dPriv) +{ + struct dri_context *dri_ctx; + int x, y, w, h; + __DRIscreen *sPriv = dPriv->driScreenPriv; + struct gl_texture_unit *texUnit; + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + uint32_t internalFormat; + gl_format texFormat; + + dri_ctx = pDRICtx->driverPrivate; + + internalFormat = (texture_format == __DRI_TEXTURE_FORMAT_RGB ? 3 : 4); + + texUnit = _mesa_get_current_tex_unit(&dri_ctx->Base); + texObj = _mesa_select_tex_object(&dri_ctx->Base, texUnit, target); + texImage = _mesa_get_tex_image(&dri_ctx->Base, texObj, target, 0); + + _mesa_lock_texture(&dri_ctx->Base, texObj); + + sPriv->swrast_loader->getDrawableInfo(dPriv, &x, &y, &w, &h, dPriv->loaderPrivate); + + if (texture_format == __DRI_TEXTURE_FORMAT_RGB) + texFormat = MESA_FORMAT_XRGB8888; + else + texFormat = MESA_FORMAT_ARGB8888; + + _mesa_init_teximage_fields(&dri_ctx->Base, target, texImage, + w, h, 1, 0, internalFormat, texFormat); + + sPriv->swrast_loader->getImage(dPriv, x, y, w, h, (char *)texImage->Data, + dPriv->loaderPrivate); + + _mesa_unlock_texture(&dri_ctx->Base, texObj); +} + +static void swrastSetTexBuffer(__DRIcontext *pDRICtx, GLint target, + __DRIdrawable *dPriv) +{ + swrastSetTexBuffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv); +} + +static const __DRItexBufferExtension swrastTexBufferExtension = { + { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION }, + swrastSetTexBuffer, + swrastSetTexBuffer2, +}; + +static const __DRIextension *dri_screen_extensions[] = { + &swrastTexBufferExtension.base, + NULL +}; + +static __DRIconfig ** +swrastFillInModes(__DRIscreen *psp, + unsigned pixel_bits, unsigned depth_bits, + unsigned stencil_bits, GLboolean have_back_buffer) +{ + __DRIconfig **configs; + unsigned depth_buffer_factor; + unsigned back_buffer_factor; + GLenum fb_format; + GLenum fb_type; + + /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't + * support pageflipping at all. + */ + static const GLenum back_buffer_modes[] = { + GLX_NONE, GLX_SWAP_UNDEFINED_OML + }; + + uint8_t depth_bits_array[4]; + uint8_t stencil_bits_array[4]; + uint8_t msaa_samples_array[1]; + + (void) psp; + (void) have_back_buffer; + + depth_bits_array[0] = 0; + depth_bits_array[1] = 0; + depth_bits_array[2] = depth_bits; + depth_bits_array[3] = depth_bits; + + /* Just like with the accumulation buffer, always provide some modes + * with a stencil buffer. + */ + stencil_bits_array[0] = 0; + stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits; + stencil_bits_array[2] = 0; + stencil_bits_array[3] = (stencil_bits == 0) ? 8 : stencil_bits; + + msaa_samples_array[0] = 0; + + depth_buffer_factor = 4; + back_buffer_factor = 2; + + switch (pixel_bits) { + case 8: + fb_format = GL_RGB; + fb_type = GL_UNSIGNED_BYTE_2_3_3_REV; + break; + case 16: + fb_format = GL_RGB; + fb_type = GL_UNSIGNED_SHORT_5_6_5; + break; + case 24: + fb_format = GL_BGR; + fb_type = GL_UNSIGNED_INT_8_8_8_8_REV; + break; + case 32: + fb_format = GL_BGRA; + fb_type = GL_UNSIGNED_INT_8_8_8_8_REV; + break; + default: + fprintf(stderr, "[%s:%u] bad depth %d\n", __FUNCTION__, __LINE__, + pixel_bits); + return NULL; + } + + configs = driCreateConfigs(fb_format, fb_type, + depth_bits_array, stencil_bits_array, + depth_buffer_factor, back_buffer_modes, + back_buffer_factor, msaa_samples_array, 1, + GL_TRUE); + if (configs == NULL) { + fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __FUNCTION__, + __LINE__); + return NULL; + } + + return configs; +} + +static const __DRIconfig ** +dri_init_screen(__DRIscreen * psp) +{ + __DRIconfig **configs8, **configs16, **configs24, **configs32; + + TRACE; + + psp->extensions = dri_screen_extensions; + + configs8 = swrastFillInModes(psp, 8, 8, 0, 1); + configs16 = swrastFillInModes(psp, 16, 16, 0, 1); + configs24 = swrastFillInModes(psp, 24, 24, 8, 1); + configs32 = swrastFillInModes(psp, 32, 24, 8, 1); + + configs16 = driConcatConfigs(configs8, configs16); + configs24 = driConcatConfigs(configs16, configs24); + configs32 = driConcatConfigs(configs24, configs32); + + return (const __DRIconfig **)configs32; +} + +static void +dri_destroy_screen(__DRIscreen * sPriv) +{ + TRACE; + (void) sPriv; +} + + +/** + * Framebuffer and renderbuffer-related functions. + */ + +static GLuint +choose_pixel_format(const struct gl_config *v) +{ + int depth = v->rgbBits; + + if (depth == 32 + && v->redMask == 0xff0000 + && v->greenMask == 0x00ff00 + && v->blueMask == 0x0000ff) + return PF_A8R8G8B8; + else if (depth == 24 + && v->redMask == 0xff0000 + && v->greenMask == 0x00ff00 + && v->blueMask == 0x0000ff) + return PF_X8R8G8B8; + else if (depth == 16 + && v->redMask == 0xf800 + && v->greenMask == 0x07e0 + && v->blueMask == 0x001f) + return PF_R5G6B5; + else if (depth == 8 + && v->redMask == 0x07 + && v->greenMask == 0x38 + && v->blueMask == 0xc0) + return PF_R3G3B2; + + _mesa_problem( NULL, "unexpected format in %s", __FUNCTION__ ); + return 0; +} + +static void +swrast_delete_renderbuffer(struct gl_renderbuffer *rb) +{ + TRACE; + + free(rb->Data); + free(rb); +} + +/* see bytes_per_line in libGL */ +static INLINE int +bytes_per_line(unsigned pitch_bits, unsigned mul) +{ + unsigned mask = mul - 1; + + return ((pitch_bits + mask) & ~mask) / 8; +} + +static GLboolean +swrast_alloc_front_storage(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLenum internalFormat, GLuint width, GLuint height) +{ + struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb); + + TRACE; + + (void) ctx; + (void) internalFormat; + + rb->Data = NULL; + rb->Width = width; + rb->Height = height; + + xrb->pitch = bytes_per_line(width * xrb->bpp, 32); + + return GL_TRUE; +} + +static GLboolean +swrast_alloc_back_storage(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLenum internalFormat, GLuint width, GLuint height) +{ + struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb); + + TRACE; + + free(rb->Data); + + swrast_alloc_front_storage(ctx, rb, internalFormat, width, height); + + rb->Data = malloc(height * xrb->pitch); + + return GL_TRUE; +} + +static struct swrast_renderbuffer * +swrast_new_renderbuffer(const struct gl_config *visual, GLboolean front) +{ + struct swrast_renderbuffer *xrb = calloc(1, sizeof *xrb); + GLuint pixel_format; + + TRACE; + + if (!xrb) + return NULL; + + _mesa_init_renderbuffer(&xrb->Base, 0); + + pixel_format = choose_pixel_format(visual); + + xrb->Base.Delete = swrast_delete_renderbuffer; + if (front) { + xrb->Base.AllocStorage = swrast_alloc_front_storage; + swrast_set_span_funcs_front(xrb, pixel_format); + } + else { + xrb->Base.AllocStorage = swrast_alloc_back_storage; + swrast_set_span_funcs_back(xrb, pixel_format); + } + + switch (pixel_format) { + case PF_A8R8G8B8: + xrb->Base.Format = MESA_FORMAT_ARGB8888; + xrb->Base.InternalFormat = GL_RGBA; + xrb->Base._BaseFormat = GL_RGBA; + xrb->Base.DataType = GL_UNSIGNED_BYTE; + xrb->bpp = 32; + break; + case PF_X8R8G8B8: + xrb->Base.Format = MESA_FORMAT_ARGB8888; /* XXX */ + xrb->Base.InternalFormat = GL_RGB; + xrb->Base._BaseFormat = GL_RGB; + xrb->Base.DataType = GL_UNSIGNED_BYTE; + xrb->bpp = 32; + break; + case PF_R5G6B5: + xrb->Base.Format = MESA_FORMAT_RGB565; + xrb->Base.InternalFormat = GL_RGB; + xrb->Base._BaseFormat = GL_RGB; + xrb->Base.DataType = GL_UNSIGNED_BYTE; + xrb->bpp = 16; + break; + case PF_R3G3B2: + xrb->Base.Format = MESA_FORMAT_RGB332; + xrb->Base.InternalFormat = GL_RGB; + xrb->Base._BaseFormat = GL_RGB; + xrb->Base.DataType = GL_UNSIGNED_BYTE; + xrb->bpp = 8; + break; + default: + return NULL; + } + + return xrb; +} + +static GLboolean +dri_create_buffer(__DRIscreen * sPriv, + __DRIdrawable * dPriv, + const struct gl_config * visual, GLboolean isPixmap) +{ + struct dri_drawable *drawable = NULL; + struct gl_framebuffer *fb; + struct swrast_renderbuffer *frontrb, *backrb; + + TRACE; + + (void) sPriv; + (void) isPixmap; + + drawable = CALLOC_STRUCT(dri_drawable); + if (drawable == NULL) + goto drawable_fail; + + dPriv->driverPrivate = drawable; + drawable->dPriv = dPriv; + + drawable->row = malloc(MAX_WIDTH * 4); + if (drawable->row == NULL) + goto drawable_fail; + + fb = &drawable->Base; + + /* basic framebuffer setup */ + _mesa_initialize_window_framebuffer(fb, visual); + + /* add front renderbuffer */ + frontrb = swrast_new_renderbuffer(visual, GL_TRUE); + _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontrb->Base); + + /* add back renderbuffer */ + if (visual->doubleBufferMode) { + backrb = swrast_new_renderbuffer(visual, GL_FALSE); + _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backrb->Base); + } + + /* add software renderbuffers */ + _mesa_add_soft_renderbuffers(fb, + GL_FALSE, /* color */ + visual->haveDepthBuffer, + visual->haveStencilBuffer, + visual->haveAccumBuffer, + GL_FALSE, /* alpha */ + GL_FALSE /* aux bufs */); + + return GL_TRUE; + +drawable_fail: + + if (drawable) + free(drawable->row); + + FREE(drawable); + + return GL_FALSE; +} + +static void +dri_destroy_buffer(__DRIdrawable * dPriv) +{ + TRACE; + + if (dPriv) { + struct dri_drawable *drawable = dri_drawable(dPriv); + struct gl_framebuffer *fb; + + free(drawable->row); + + fb = &drawable->Base; + + fb->DeletePending = GL_TRUE; + _mesa_reference_framebuffer(&fb, NULL); + } +} + +static void +dri_swap_buffers(__DRIdrawable * dPriv) +{ + __DRIscreen *sPriv = dPriv->driScreenPriv; + + GET_CURRENT_CONTEXT(ctx); + + struct dri_drawable *drawable = dri_drawable(dPriv); + struct gl_framebuffer *fb; + struct swrast_renderbuffer *frontrb, *backrb; + + TRACE; + + fb = &drawable->Base; + + frontrb = + swrast_renderbuffer(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer); + backrb = + swrast_renderbuffer(fb->Attachment[BUFFER_BACK_LEFT].Renderbuffer); + + /* check for signle-buffered */ + if (backrb == NULL) + return; + + /* check if swapping currently bound buffer */ + if (ctx && ctx->DrawBuffer == fb) { + /* flush pending rendering */ + _mesa_notifySwapBuffers(ctx); + } + + sPriv->swrast_loader->putImage(dPriv, __DRI_SWRAST_IMAGE_OP_SWAP, + 0, 0, + frontrb->Base.Width, + frontrb->Base.Height, + backrb->Base.Data, + dPriv->loaderPrivate); +} + + +/** + * General device driver functions. + */ + +static void +get_window_size( struct gl_framebuffer *fb, GLsizei *w, GLsizei *h ) +{ + __DRIdrawable *dPriv = swrast_drawable(fb)->dPriv; + __DRIscreen *sPriv = dPriv->driScreenPriv; + int x, y; + + sPriv->swrast_loader->getDrawableInfo(dPriv, + &x, &y, w, h, + dPriv->loaderPrivate); +} + +static void +swrast_check_and_update_window_size( struct gl_context *ctx, struct gl_framebuffer *fb ) +{ + GLsizei width, height; + + get_window_size(fb, &width, &height); + if (fb->Width != width || fb->Height != height) { + _mesa_resize_framebuffer(ctx, fb, width, height); + } +} + +static const GLubyte * +get_string(struct gl_context *ctx, GLenum pname) +{ + (void) ctx; + switch (pname) { + case GL_VENDOR: + return (const GLubyte *) "Mesa Project"; + case GL_RENDERER: + return (const GLubyte *) "Software Rasterizer"; + default: + return NULL; + } +} + +static void +update_state( struct gl_context *ctx, GLuint new_state ) +{ + /* not much to do here - pass it on */ + _swrast_InvalidateState( ctx, new_state ); + _swsetup_InvalidateState( ctx, new_state ); + _vbo_InvalidateState( ctx, new_state ); + _tnl_InvalidateState( ctx, new_state ); +} + +static void +viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h) +{ + struct gl_framebuffer *draw = ctx->WinSysDrawBuffer; + struct gl_framebuffer *read = ctx->WinSysReadBuffer; + + (void) x; + (void) y; + (void) w; + (void) h; + swrast_check_and_update_window_size(ctx, draw); + swrast_check_and_update_window_size(ctx, read); +} + +static gl_format swrastChooseTextureFormat(struct gl_context * ctx, + GLint internalFormat, + GLenum format, + GLenum type) +{ + if (internalFormat == GL_RGB) + return MESA_FORMAT_XRGB8888; + return _mesa_choose_tex_format(ctx, internalFormat, format, type); +} + +static void +swrast_init_driver_functions(struct dd_function_table *driver) +{ + driver->GetString = get_string; + driver->UpdateState = update_state; + driver->GetBufferSize = NULL; + driver->Viewport = viewport; + driver->ChooseTextureFormat = swrastChooseTextureFormat; +} + +static const char *es2_extensions[] = { + /* Used by mesa internally (cf all_mesa_extensions in ../common/utils.c) */ + "GL_ARB_draw_buffers", + "GL_ARB_multisample", + "GL_ARB_texture_compression", + "GL_ARB_transpose_matrix", + "GL_ARB_vertex_buffer_object", + "GL_ARB_window_pos", + "GL_EXT_blend_func_separate", + "GL_EXT_compiled_vertex_array", + "GL_EXT_framebuffer_blit", + "GL_EXT_multi_draw_arrays", + "GL_EXT_polygon_offset", + "GL_EXT_texture_object", + "GL_EXT_vertex_array", + "GL_IBM_multimode_draw_arrays", + "GL_MESA_window_pos", + "GL_NV_vertex_program", + + /* Required by GLES2 */ + "GL_ARB_fragment_program", + "GL_ARB_fragment_shader", + "GL_ARB_multitexture", + "GL_ARB_shader_objects", + "GL_ARB_texture_cube_map", + "GL_ARB_texture_mirrored_repeat", + "GL_ARB_texture_non_power_of_two", + "GL_ARB_vertex_shader", + "GL_EXT_blend_color", + "GL_EXT_blend_equation_separate", + "GL_EXT_blend_minmax", + "GL_EXT_blend_subtract", + "GL_EXT_stencil_wrap", + + /* Optional GLES2 */ + "GL_ARB_framebuffer_object", + "GL_EXT_texture_filter_anisotropic", + "GL_ARB_depth_texture", + "GL_EXT_packed_depth_stencil", + "GL_EXT_framebuffer_object", + NULL, +}; + +static void +InitExtensionsES2(struct gl_context *ctx) +{ + int i; + + for (i = 0; es2_extensions[i]; i++) + _mesa_enable_extension(ctx, es2_extensions[i]); +} + +/** + * Context-related functions. + */ + +static GLboolean +dri_create_context(gl_api api, + const struct gl_config * visual, + __DRIcontext * cPriv, void *sharedContextPrivate) +{ + struct dri_context *ctx = NULL; + struct dri_context *share = (struct dri_context *)sharedContextPrivate; + struct gl_context *mesaCtx = NULL; + struct gl_context *sharedCtx = NULL; + struct dd_function_table functions; + + TRACE; + + ctx = CALLOC_STRUCT(dri_context); + if (ctx == NULL) + goto context_fail; + + cPriv->driverPrivate = ctx; + ctx->cPriv = cPriv; + + /* build table of device driver functions */ + _mesa_init_driver_functions(&functions); + swrast_init_driver_functions(&functions); + + if (share) { + sharedCtx = &share->Base; + } + + mesaCtx = &ctx->Base; + + /* basic context setup */ + if (!_mesa_initialize_context(mesaCtx, api, visual, sharedCtx, &functions, (void *) cPriv)) { + goto context_fail; + } + + /* do bounds checking to prevent segfaults and server crashes! */ + mesaCtx->Const.CheckArrayBounds = GL_TRUE; + + /* create module contexts */ + _swrast_CreateContext( mesaCtx ); + _vbo_CreateContext( mesaCtx ); + _tnl_CreateContext( mesaCtx ); + _swsetup_CreateContext( mesaCtx ); + _swsetup_Wakeup( mesaCtx ); + + /* use default TCL pipeline */ + { + TNLcontext *tnl = TNL_CONTEXT(mesaCtx); + tnl->Driver.RunPipeline = _tnl_run_pipeline; + } + + _mesa_meta_init(mesaCtx); + _mesa_enable_sw_extensions(mesaCtx); + + switch (api) { + case API_OPENGL: + _mesa_enable_1_3_extensions(mesaCtx); + _mesa_enable_1_4_extensions(mesaCtx); + _mesa_enable_1_5_extensions(mesaCtx); + _mesa_enable_2_0_extensions(mesaCtx); + _mesa_enable_2_1_extensions(mesaCtx); + break; + case API_OPENGLES: + _mesa_enable_1_3_extensions(mesaCtx); + _mesa_enable_1_4_extensions(mesaCtx); + _mesa_enable_1_5_extensions(mesaCtx); + + break; + case API_OPENGLES2: + InitExtensionsES2( mesaCtx); + break; + } + + return GL_TRUE; + +context_fail: + + FREE(ctx); + + return GL_FALSE; +} + +static void +dri_destroy_context(__DRIcontext * cPriv) +{ + TRACE; + + if (cPriv) { + struct dri_context *ctx = dri_context(cPriv); + struct gl_context *mesaCtx; + + mesaCtx = &ctx->Base; + + _mesa_meta_free(mesaCtx); + _swsetup_DestroyContext( mesaCtx ); + _swrast_DestroyContext( mesaCtx ); + _tnl_DestroyContext( mesaCtx ); + _vbo_DestroyContext( mesaCtx ); + _mesa_destroy_context( mesaCtx ); + } +} + +static GLboolean +dri_make_current(__DRIcontext * cPriv, + __DRIdrawable * driDrawPriv, + __DRIdrawable * driReadPriv) +{ + struct gl_context *mesaCtx; + struct gl_framebuffer *mesaDraw; + struct gl_framebuffer *mesaRead; + TRACE; + + if (cPriv) { + struct dri_context *ctx = dri_context(cPriv); + struct dri_drawable *draw; + struct dri_drawable *read; + + if (!driDrawPriv || !driReadPriv) + return GL_FALSE; + + draw = dri_drawable(driDrawPriv); + read = dri_drawable(driReadPriv); + mesaCtx = &ctx->Base; + mesaDraw = &draw->Base; + mesaRead = &read->Base; + + /* check for same context and buffer */ + if (mesaCtx == _mesa_get_current_context() + && mesaCtx->DrawBuffer == mesaDraw + && mesaCtx->ReadBuffer == mesaRead) { + return GL_TRUE; + } + + _glapi_check_multithread(); + + swrast_check_and_update_window_size(mesaCtx, mesaDraw); + if (mesaRead != mesaDraw) + swrast_check_and_update_window_size(mesaCtx, mesaRead); + + _mesa_make_current( mesaCtx, + mesaDraw, + mesaRead ); + } + else { + /* unbind */ + _mesa_make_current( NULL, NULL, NULL ); + } + + return GL_TRUE; +} + +static GLboolean +dri_unbind_context(__DRIcontext * cPriv) +{ + TRACE; + (void) cPriv; + + /* Unset current context and dispath table */ + _mesa_make_current(NULL, NULL, NULL); + + return GL_TRUE; +} + + +const struct __DriverAPIRec driDriverAPI = { + /*.InitScreen = */dri_init_screen, + /*.DestroyScreen = */dri_destroy_screen, + /*.CreateContext = */dri_create_context, + /*.DestroyContext = */dri_destroy_context, + /*.CreateBuffer = */dri_create_buffer, + /*.DestroyBuffer = */dri_destroy_buffer, + /*.SwapBuffers = */dri_swap_buffers, + /*.MakeCurrent = */dri_make_current, + /*.UnbindContext = */dri_unbind_context, +}; + +/* This is the table of extensions that the loader will dlsym() for. */ +PUBLIC const __DRIextension *__driDriverExtensions[] = { + &driCoreExtension.base, + &driSWRastExtension.base, + NULL +}; |