| /* |
| * 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. |
| */ |
| |
| #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/s_renderbuffer.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" |
| #include "swrast/s_context.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; |
| struct swrast_texture_image *swImage; |
| 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); |
| swImage = swrast_texture_image(texImage); |
| |
| _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, texImage, |
| w, h, 1, 0, internalFormat, texFormat); |
| |
| sPriv->swrast_loader->getImage(dPriv, x, y, w, h, (char *)swImage->Buffer, |
| 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", __func__, __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", __func__, |
| __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_context *ctx, struct gl_renderbuffer *rb) |
| { |
| struct dri_swrast_renderbuffer *xrb = dri_swrast_renderbuffer(rb); |
| |
| TRACE; |
| |
| free(xrb->Base.Buffer); |
| _mesa_delete_renderbuffer(ctx, 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 dri_swrast_renderbuffer *xrb = dri_swrast_renderbuffer(rb); |
| |
| TRACE; |
| |
| (void) ctx; |
| (void) internalFormat; |
| |
| xrb->Base.Buffer = 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 dri_swrast_renderbuffer *xrb = dri_swrast_renderbuffer(rb); |
| |
| TRACE; |
| |
| free(xrb->Base.Buffer); |
| |
| swrast_alloc_front_storage(ctx, rb, internalFormat, width, height); |
| |
| xrb->Base.Buffer = malloc(height * xrb->pitch); |
| |
| return GL_TRUE; |
| } |
| |
| static struct dri_swrast_renderbuffer * |
| swrast_new_renderbuffer(const struct gl_config *visual, __DRIdrawable *dPriv, |
| GLboolean front) |
| { |
| struct dri_swrast_renderbuffer *xrb = calloc(1, sizeof *xrb); |
| struct gl_renderbuffer *rb; |
| GLuint pixel_format; |
| |
| TRACE; |
| |
| if (!xrb) |
| return NULL; |
| |
| rb = &xrb->Base.Base; |
| |
| _mesa_init_renderbuffer(rb, 0); |
| |
| pixel_format = choose_pixel_format(visual); |
| |
| xrb->dPriv = dPriv; |
| xrb->Base.Base.Delete = swrast_delete_renderbuffer; |
| if (front) { |
| rb->AllocStorage = swrast_alloc_front_storage; |
| } |
| else { |
| rb->AllocStorage = swrast_alloc_back_storage; |
| } |
| |
| switch (pixel_format) { |
| case PF_A8R8G8B8: |
| rb->Format = MESA_FORMAT_ARGB8888; |
| rb->InternalFormat = GL_RGBA; |
| rb->_BaseFormat = GL_RGBA; |
| xrb->bpp = 32; |
| break; |
| case PF_X8R8G8B8: |
| rb->Format = MESA_FORMAT_ARGB8888; /* XXX */ |
| rb->InternalFormat = GL_RGB; |
| rb->_BaseFormat = GL_RGB; |
| xrb->bpp = 32; |
| break; |
| case PF_R5G6B5: |
| rb->Format = MESA_FORMAT_RGB565; |
| rb->InternalFormat = GL_RGB; |
| rb->_BaseFormat = GL_RGB; |
| xrb->bpp = 16; |
| break; |
| case PF_R3G3B2: |
| rb->Format = MESA_FORMAT_RGB332; |
| rb->InternalFormat = GL_RGB; |
| rb->_BaseFormat = GL_RGB; |
| xrb->bpp = 8; |
| break; |
| default: |
| return NULL; |
| } |
| |
| return xrb; |
| } |
| |
| static void |
| swrast_map_renderbuffer(struct gl_context *ctx, |
| struct gl_renderbuffer *rb, |
| GLuint x, GLuint y, GLuint w, GLuint h, |
| GLbitfield mode, |
| GLubyte **out_map, |
| GLint *out_stride) |
| { |
| struct dri_swrast_renderbuffer *xrb = dri_swrast_renderbuffer(rb); |
| GLubyte *map = xrb->Base.Buffer; |
| int cpp = _mesa_get_format_bytes(rb->Format); |
| int stride = rb->Width * cpp; |
| |
| if (rb->AllocStorage == swrast_alloc_front_storage) { |
| __DRIdrawable *dPriv = xrb->dPriv; |
| __DRIscreen *sPriv = dPriv->driScreenPriv; |
| |
| xrb->map_mode = mode; |
| xrb->map_x = x; |
| xrb->map_y = y; |
| xrb->map_w = w; |
| xrb->map_h = h; |
| |
| stride = w * cpp; |
| xrb->Base.Buffer = malloc(h * stride); |
| |
| sPriv->swrast_loader->getImage(dPriv, x, y, w, h, |
| (char *) xrb->Base.Buffer, |
| dPriv->loaderPrivate); |
| |
| *out_map = xrb->Base.Buffer; |
| *out_stride = stride; |
| return; |
| } |
| |
| ASSERT(xrb->Base.Buffer); |
| |
| if (rb->AllocStorage == swrast_alloc_back_storage) { |
| map += (rb->Height - 1) * stride; |
| stride = -stride; |
| } |
| |
| map += (GLsizei)y * stride; |
| map += (GLsizei)x * cpp; |
| |
| *out_map = map; |
| *out_stride = stride; |
| } |
| |
| static void |
| swrast_unmap_renderbuffer(struct gl_context *ctx, |
| struct gl_renderbuffer *rb) |
| { |
| struct dri_swrast_renderbuffer *xrb = dri_swrast_renderbuffer(rb); |
| |
| if (rb->AllocStorage == swrast_alloc_front_storage) { |
| __DRIdrawable *dPriv = xrb->dPriv; |
| __DRIscreen *sPriv = dPriv->driScreenPriv; |
| |
| if (xrb->map_mode & GL_MAP_WRITE_BIT) { |
| sPriv->swrast_loader->putImage(dPriv, __DRI_SWRAST_IMAGE_OP_DRAW, |
| xrb->map_x, xrb->map_y, |
| xrb->map_w, xrb->map_h, |
| (char *) xrb->Base.Buffer, |
| dPriv->loaderPrivate); |
| } |
| |
| free(xrb->Base.Buffer); |
| xrb->Base.Buffer = NULL; |
| } |
| } |
| |
| 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 dri_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(SWRAST_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, dPriv, GL_TRUE); |
| _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontrb->Base.Base); |
| |
| /* add back renderbuffer */ |
| if (visual->doubleBufferMode) { |
| backrb = swrast_new_renderbuffer(visual, dPriv, GL_FALSE); |
| _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backrb->Base.Base); |
| } |
| |
| /* add software renderbuffers */ |
| _swrast_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 dri_swrast_renderbuffer *frontrb, *backrb; |
| |
| TRACE; |
| |
| fb = &drawable->Base; |
| |
| frontrb = |
| dri_swrast_renderbuffer(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer); |
| backrb = |
| dri_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.Base.Width, |
| frontrb->Base.Base.Height, |
| (char *) backrb->Base.Buffer, |
| 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, |
| GLenum target, |
| GLint internalFormat, |
| GLenum format, |
| GLenum type) |
| { |
| if (internalFormat == GL_RGB) |
| return MESA_FORMAT_XRGB8888; |
| return _mesa_choose_tex_format(ctx, target, 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; |
| driver->MapRenderbuffer = swrast_map_renderbuffer; |
| driver->UnmapRenderbuffer = swrast_unmap_renderbuffer; |
| } |
| |
| static const char *es2_extensions[] = { |
| /* Used by mesa internally (cf all_mesa_extensions in ../common/utils.c) */ |
| "GL_ARB_transpose_matrix", |
| "GL_ARB_window_pos", |
| "GL_EXT_blend_func_separate", |
| "GL_EXT_compiled_vertex_array", |
| "GL_EXT_framebuffer_blit", |
| "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_shader_objects", |
| "GL_ARB_texture_cube_map", |
| "GL_ARB_texture_non_power_of_two", |
| "GL_ARB_vertex_shader", |
| "GL_EXT_blend_color", |
| "GL_EXT_blend_equation_separate", |
| "GL_EXT_blend_minmax", |
| |
| /* 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, |
| unsigned major_version, |
| unsigned minor_version, |
| uint32_t flags, |
| unsigned *error, |
| 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; |
| |
| /* Flag filtering is handled in dri2CreateContextAttribs. |
| */ |
| (void) flags; |
| |
| switch (api) { |
| case API_OPENGL: |
| if (major_version > 2 |
| || (major_version == 2 && minor_version > 1)) { |
| *error = __DRI_CTX_ERROR_BAD_VERSION; |
| return GL_FALSE; |
| } |
| break; |
| case API_OPENGLES: |
| case API_OPENGLES2: |
| break; |
| case API_OPENGL_CORE: |
| *error = __DRI_CTX_ERROR_BAD_API; |
| return GL_FALSE; |
| } |
| |
| ctx = CALLOC_STRUCT(dri_context); |
| if (ctx == NULL) { |
| *error = __DRI_CTX_ERROR_NO_MEMORY; |
| 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)) { |
| *error = __DRI_CTX_ERROR_NO_MEMORY; |
| 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_CORE: |
| /* XXX fix me, fall-through for now */ |
| 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; |
| } |
| |
| *error = __DRI_CTX_ERROR_SUCCESS; |
| 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 |
| }; |