diff options
Diffstat (limited to 'src/mesa/drivers/dri/swrast/swrast.c')
| -rw-r--r-- | src/mesa/drivers/dri/swrast/swrast.c | 730 |
1 files changed, 730 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/swrast/swrast.c b/src/mesa/drivers/dri/swrast/swrast.c new file mode 100644 index 0000000000..304d07729e --- /dev/null +++ b/src/mesa/drivers/dri/swrast/swrast.c @@ -0,0 +1,730 @@ +/* + * Copyright (C) 2008 George Sapountzis <gsap7@yahoo.gr> + * + * 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 "context.h" +#include "extensions.h" +#include "framebuffer.h" +#include "imports.h" +#include "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 "utils.h" + +#include "swrast_priv.h" + + +#define need_GL_VERSION_1_3 +#define need_GL_VERSION_1_4 +#define need_GL_VERSION_1_5 +#define need_GL_VERSION_2_0 +#define need_GL_VERSION_2_1 + +/* sw extensions for imaging */ +#define need_GL_EXT_blend_color +#define need_GL_EXT_blend_minmax +#define need_GL_EXT_convolution +#define need_GL_EXT_histogram +#define need_GL_SGI_color_table + +/* sw extensions not associated with some GL version */ +#define need_GL_ARB_shader_objects +#define need_GL_ARB_vertex_program +#define need_GL_APPLE_vertex_array_object +#define need_GL_ATI_fragment_shader +#define need_GL_EXT_depth_bounds_test +#define need_GL_EXT_framebuffer_object +#define need_GL_EXT_framebuffer_blit +#define need_GL_EXT_gpu_program_parameters +#define need_GL_EXT_paletted_texture +#define need_GL_IBM_multimode_draw_arrays +#define need_GL_MESA_resize_buffers +#define need_GL_NV_vertex_program +#define need_GL_NV_fragment_program + +#include "extension_helper.h" + +const struct dri_extension card_extensions[] = +{ + { "GL_VERSION_1_3", GL_VERSION_1_3_functions }, + { "GL_VERSION_1_4", GL_VERSION_1_4_functions }, + { "GL_VERSION_1_5", GL_VERSION_1_5_functions }, + { "GL_VERSION_2_0", GL_VERSION_2_0_functions }, + { "GL_VERSION_2_1", GL_VERSION_2_1_functions }, + + { "GL_EXT_blend_color", GL_EXT_blend_color_functions }, + { "GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions }, + { "GL_EXT_convolution", GL_EXT_convolution_functions }, + { "GL_EXT_histogram", GL_EXT_histogram_functions }, + { "GL_SGI_color_table", GL_SGI_color_table_functions }, + + { "GL_ARB_shader_objects", GL_ARB_shader_objects_functions }, + { "GL_ARB_vertex_program", GL_ARB_vertex_program_functions }, + { "GL_APPLE_vertex_array_object", GL_APPLE_vertex_array_object_functions }, + { "GL_ATI_fragment_shader", GL_ATI_fragment_shader_functions }, + { "GL_EXT_depth_bounds_test", GL_EXT_depth_bounds_test_functions }, + { "GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions }, + { "GL_EXT_framebuffer_blit", GL_EXT_framebuffer_blit_functions }, + { "GL_EXT_gpu_program_parameters", GL_EXT_gpu_program_parameters_functions }, + { "GL_EXT_paletted_texture", GL_EXT_paletted_texture_functions }, + { "GL_IBM_multimode_draw_arrays", GL_IBM_multimode_draw_arrays_functions }, + { "GL_MESA_resize_buffers", GL_MESA_resize_buffers_functions }, + { "GL_NV_vertex_program", GL_NV_vertex_program_functions }, + { "GL_NV_fragment_program", GL_NV_fragment_program_functions }, + { NULL, NULL } +}; + + +/** + * Screen and config-related functions + */ + +static void +setupLoaderExtensions(__DRIscreen *psp, + const __DRIextension **extensions) +{ + int i; + + for (i = 0; extensions[i]; i++) { + if (strcmp(extensions[i]->name, __DRI_SWRAST_LOADER) == 0) + psp->swrast_loader = (__DRIswrastLoaderExtension *) extensions[i]; + } +} + +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 + }; + + u_int8_t depth_bits_array[4]; + u_int8_t stencil_bits_array[4]; + + 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; + + depth_buffer_factor = 4; + back_buffer_factor = 2; + + if (pixel_bits == 8) { + fb_format = GL_RGB; + fb_type = GL_UNSIGNED_BYTE_2_3_3_REV; + } + else if (pixel_bits == 16) { + fb_format = GL_RGB; + fb_type = GL_UNSIGNED_SHORT_5_6_5; + } + else { + fb_format = GL_BGRA; + fb_type = GL_UNSIGNED_INT_8_8_8_8_REV; + } + + configs = driCreateConfigs(fb_format, fb_type, + depth_bits_array, stencil_bits_array, + depth_buffer_factor, back_buffer_modes, + back_buffer_factor); + if (configs == NULL) { + fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__, + __LINE__); + return NULL; + } + + return configs; +} + +static __DRIscreen * +driCreateNewScreen(int scrn, const __DRIextension **extensions, + const __DRIconfig ***driver_configs, void *data) +{ + static const __DRIextension *emptyExtensionList[] = { NULL }; + __DRIscreen *psp; + __DRIconfig **configs8, **configs16, **configs32; + + (void) data; + + TRACE; + + psp = _mesa_calloc(sizeof(*psp)); + if (!psp) + return NULL; + + setupLoaderExtensions(psp, extensions); + + psp->num = scrn; + psp->extensions = emptyExtensionList; + + configs8 = swrastFillInModes(psp, 8, 8, 0, 1); + configs16 = swrastFillInModes(psp, 16, 16, 0, 1); + configs32 = swrastFillInModes(psp, 32, 24, 8, 1); + + configs16 = (__DRIconfig **)driConcatConfigs(configs8, configs16); + + *driver_configs = driConcatConfigs(configs16, configs32); + + driInitExtensions( NULL, card_extensions, GL_FALSE ); + + return psp; +} + +static void driDestroyScreen(__DRIscreen *psp) +{ + TRACE; + + if (psp) { + _mesa_free(psp); + } +} + +static const __DRIextension **driGetExtensions(__DRIscreen *psp) +{ + TRACE; + + return psp->extensions; +} + + +/** + * Framebuffer and renderbuffer-related functions. + */ + +static GLuint +choose_pixel_format(const GLvisual *v) +{ + if (v->rgbMode) { + int bpp = v->rgbBits; + + if (bpp == 32 + && v->redMask == 0xff0000 + && v->greenMask == 0x00ff00 + && v->blueMask == 0x0000ff) + return PF_A8R8G8B8; + else if (bpp == 16 + && v->redMask == 0xf800 + && v->greenMask == 0x07e0 + && v->blueMask == 0x001f) + return PF_R5G6B5; + else if (bpp == 8 + && v->redMask == 0x07 + && v->greenMask == 0x38 + && v->blueMask == 0xc0) + return PF_R3G3B2; + } + else { + if (v->indexBits == 8) + return PF_CI8; + } + + _mesa_problem( NULL, "unexpected format in %s", __FUNCTION__ ); + return 0; +} + +static void +swrast_delete_renderbuffer(struct gl_renderbuffer *rb) +{ + TRACE; + + _mesa_free(rb->Data); + _mesa_free(rb); +} + +static GLboolean +swrast_alloc_front_storage(GLcontext *ctx, struct gl_renderbuffer *rb, + GLenum internalFormat, GLuint width, GLuint height) +{ + struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb); + int bpp; + unsigned mask = PITCH_ALIGN_BITS - 1; + + TRACE; + + rb->Data = NULL; + rb->Width = width; + rb->Height = height; + + switch (internalFormat) { + case GL_RGB: + bpp = rb->RedBits + rb->GreenBits + rb->BlueBits; + break; + case GL_RGBA: + bpp = rb->RedBits + rb->GreenBits + rb->BlueBits + rb->AlphaBits; + break; + case GL_COLOR_INDEX8_EXT: + bpp = rb->IndexBits; + break; + default: + _mesa_problem( NULL, "unexpected format in %s", __FUNCTION__ ); + return GL_FALSE; + } + + /* always pad to PITCH_ALIGN_BITS */ + xrb->pitch = ((width * bpp + mask) & ~mask) / 8; + + return GL_TRUE; +} + +static GLboolean +swrast_alloc_back_storage(GLcontext *ctx, struct gl_renderbuffer *rb, + GLenum internalFormat, GLuint width, GLuint height) +{ + struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb); + + TRACE; + + _mesa_free(rb->Data); + + swrast_alloc_front_storage(ctx, rb, internalFormat, width, height); + + rb->Data = _mesa_malloc(height * xrb->pitch); + + return GL_TRUE; +} + +static struct swrast_renderbuffer * +swrast_new_renderbuffer(const GLvisual *visual, GLboolean front) +{ + struct swrast_renderbuffer *xrb = _mesa_calloc(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.InternalFormat = GL_RGBA; + xrb->Base._BaseFormat = GL_RGBA; + xrb->Base.DataType = GL_UNSIGNED_BYTE; + xrb->Base.RedBits = 8 * sizeof(GLubyte); + xrb->Base.GreenBits = 8 * sizeof(GLubyte); + xrb->Base.BlueBits = 8 * sizeof(GLubyte); + xrb->Base.AlphaBits = 8 * sizeof(GLubyte); + break; + case PF_R5G6B5: + xrb->Base.InternalFormat = GL_RGB; + xrb->Base._BaseFormat = GL_RGB; + xrb->Base.DataType = GL_UNSIGNED_BYTE; + xrb->Base.RedBits = 5 * sizeof(GLubyte); + xrb->Base.GreenBits = 6 * sizeof(GLubyte); + xrb->Base.BlueBits = 5 * sizeof(GLubyte); + xrb->Base.AlphaBits = 0; + break; + case PF_R3G3B2: + xrb->Base.InternalFormat = GL_RGB; + xrb->Base._BaseFormat = GL_RGB; + xrb->Base.DataType = GL_UNSIGNED_BYTE; + xrb->Base.RedBits = 3 * sizeof(GLubyte); + xrb->Base.GreenBits = 3 * sizeof(GLubyte); + xrb->Base.BlueBits = 2 * sizeof(GLubyte); + xrb->Base.AlphaBits = 0; + break; + case PF_CI8: + xrb->Base.InternalFormat = GL_COLOR_INDEX8_EXT; + xrb->Base._BaseFormat = GL_COLOR_INDEX; + xrb->Base.DataType = GL_UNSIGNED_BYTE; + xrb->Base.IndexBits = 8 * sizeof(GLubyte); + break; + default: + return NULL; + } + + return xrb; +} + +static __DRIdrawable * +driCreateNewDrawable(__DRIscreen *screen, + const __DRIconfig *config, void *data) +{ + __DRIdrawable *buf; + struct swrast_renderbuffer *frontrb, *backrb; + + TRACE; + + buf = _mesa_calloc(sizeof *buf); + if (!buf) + return NULL; + + buf->loaderPrivate = data; + + buf->driScreenPriv = screen; + + buf->row = _mesa_malloc(MAX_WIDTH * 4); + + /* basic framebuffer setup */ + _mesa_initialize_framebuffer(&buf->Base, &config->modes); + + /* add front renderbuffer */ + frontrb = swrast_new_renderbuffer(&config->modes, GL_TRUE); + _mesa_add_renderbuffer(&buf->Base, BUFFER_FRONT_LEFT, &frontrb->Base); + + /* add back renderbuffer */ + if (config->modes.doubleBufferMode) { + backrb = swrast_new_renderbuffer(&config->modes, GL_FALSE); + _mesa_add_renderbuffer(&buf->Base, BUFFER_BACK_LEFT, &backrb->Base); + } + + /* add software renderbuffers */ + _mesa_add_soft_renderbuffers(&buf->Base, + GL_FALSE, /* color */ + config->modes.haveDepthBuffer, + config->modes.haveStencilBuffer, + config->modes.haveAccumBuffer, + GL_FALSE, /* alpha */ + GL_FALSE /* aux bufs */); + + return buf; +} + +static void +driDestroyDrawable(__DRIdrawable *buf) +{ + TRACE; + + if (buf) { + struct gl_framebuffer *fb = &buf->Base; + + _mesa_free(buf->row); + + fb->DeletePending = GL_TRUE; + _mesa_unreference_framebuffer(&fb); + } +} + +static void driSwapBuffers(__DRIdrawable *buf) +{ + GET_CURRENT_CONTEXT(ctx); + + struct swrast_renderbuffer *frontrb = + swrast_renderbuffer(buf->Base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer); + struct swrast_renderbuffer *backrb = + swrast_renderbuffer(buf->Base.Attachment[BUFFER_BACK_LEFT].Renderbuffer); + + __DRIscreen *screen = buf->driScreenPriv; + + TRACE; + + /* check for signle-buffered */ + if (backrb == NULL) + return; + + /* check if swapping currently bound buffer */ + if (ctx && ctx->DrawBuffer == &(buf->Base)) { + /* flush pending rendering */ + _mesa_notifySwapBuffers(ctx); + } + + screen->swrast_loader->putImage(buf, __DRI_SWRAST_IMAGE_OP_SWAP, + 0, 0, + frontrb->Base.Width, + frontrb->Base.Height, + backrb->Base.Data, + buf->loaderPrivate); +} + + +/** + * General device driver functions. + */ + +static void +get_window_size( GLframebuffer *fb, GLsizei *w, GLsizei *h ) +{ + __DRIdrawable *buf = swrast_drawable(fb); + __DRIscreen *screen = buf->driScreenPriv; + int x, y; + + screen->swrast_loader->getDrawableInfo(buf, + &x, &y, w, h, + buf->loaderPrivate); +} + +static void +swrast_check_and_update_window_size( GLcontext *ctx, GLframebuffer *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(GLcontext *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( GLcontext *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(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h) +{ + GLframebuffer *draw = ctx->WinSysDrawBuffer; + GLframebuffer *read = ctx->WinSysReadBuffer; + + swrast_check_and_update_window_size(ctx, draw); + swrast_check_and_update_window_size(ctx, read); +} + +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; +} + + +/** + * Context-related functions. + */ + +static __DRIcontext * +driCreateNewContext(__DRIscreen *screen, const __DRIconfig *config, + __DRIcontext *shared, void *data) +{ + __DRIcontext *ctx; + GLcontext *mesaCtx; + struct dd_function_table functions; + + TRACE; + + ctx = _mesa_calloc(sizeof *ctx); + if (!ctx) + return NULL; + + ctx->loaderPrivate = data; + + ctx->driScreenPriv = screen; + + /* build table of device driver functions */ + _mesa_init_driver_functions(&functions); + swrast_init_driver_functions(&functions); + + if (!_mesa_initialize_context(&ctx->Base, &config->modes, + shared ? &shared->Base : NULL, + &functions, (void *) ctx)) { + _mesa_free(ctx); + return NULL; + } + + mesaCtx = &ctx->Base; + + /* 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_enable_sw_extensions(mesaCtx); + _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); + + return ctx; +} + +static void +driDestroyContext(__DRIcontext *ctx) +{ + GLcontext *mesaCtx; + TRACE; + + if (ctx) { + mesaCtx = &ctx->Base; + _swsetup_DestroyContext( mesaCtx ); + _swrast_DestroyContext( mesaCtx ); + _tnl_DestroyContext( mesaCtx ); + _vbo_DestroyContext( mesaCtx ); + _mesa_destroy_context( mesaCtx ); + } +} + +static int +driCopyContext(__DRIcontext *dst, __DRIcontext *src, unsigned long mask) +{ + TRACE; + + _mesa_copy_context(&src->Base, &dst->Base, mask); + return GL_TRUE; +} + +static int driBindContext(__DRIcontext *ctx, + __DRIdrawable *draw, + __DRIdrawable *read) +{ + GLcontext *mesaCtx; + GLframebuffer *mesaDraw; + GLframebuffer *mesaRead; + TRACE; + + if (ctx) { + if (!draw || !read) + return GL_FALSE; + + 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 (read != draw) + 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 int driUnbindContext(__DRIcontext *ctx) +{ + TRACE; + (void) ctx; + return GL_TRUE; +} + + +static const __DRIcoreExtension driCoreExtension = { + { __DRI_CORE, __DRI_CORE_VERSION }, + NULL, /* driCreateNewScreen */ + driDestroyScreen, + driGetExtensions, + driGetConfigAttrib, + driIndexConfigAttrib, + NULL, /* driCreateNewDrawable */ + driDestroyDrawable, + driSwapBuffers, + driCreateNewContext, + driCopyContext, + driDestroyContext, + driBindContext, + driUnbindContext +}; + +static const __DRIswrastExtension driSWRastExtension = { + { __DRI_SWRAST, __DRI_SWRAST_VERSION }, + driCreateNewScreen, + driCreateNewDrawable +}; + +/* This is the table of extensions that the loader will dlsym() for. */ +PUBLIC const __DRIextension *__driDriverExtensions[] = { + &driCoreExtension.base, + &driSWRastExtension.base, + NULL +}; |