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Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/main/context.h')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/main/context.h | 340 |
1 files changed, 340 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/main/context.h b/nx-X11/extras/Mesa/src/mesa/main/context.h new file mode 100644 index 000000000..8b7e7c995 --- /dev/null +++ b/nx-X11/extras/Mesa/src/mesa/main/context.h @@ -0,0 +1,340 @@ +/** + * \file context.h + * Mesa context/visual/framebuffer management functions. + * + * There are three Mesa data types which are meant to be used by device + * drivers: + * - GLcontext: this contains the Mesa rendering state + * - GLvisual: this describes the color buffer (RGB vs. ci), whether or not + * there's a depth buffer, stencil buffer, etc. + * - GLframebuffer: contains pointers to the depth buffer, stencil buffer, + * accum buffer and alpha buffers. + * + * These types should be encapsulated by corresponding device driver + * data types. See xmesa.h and xmesaP.h for an example. + * + * In OOP terms, GLcontext, GLvisual, and GLframebuffer are base classes + * which the device driver must derive from. + * + * The following functions create and destroy these data types. + */ + +/* + * Mesa 3-D graphics library + * Version: 6.1 + * + * Copyright (C) 1999-2004 Brian Paul 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 + * 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. + */ + + +#ifndef CONTEXT_H +#define CONTEXT_H + + +#include "glapi.h" +#include "imports.h" +#include "mtypes.h" + + +/**********************************************************************/ +/** \name Create/destroy a GLvisual. */ +/*@{*/ + +extern GLvisual * +_mesa_create_visual( GLboolean rgbFlag, + GLboolean dbFlag, + GLboolean stereoFlag, + GLint redBits, + GLint greenBits, + GLint blueBits, + GLint alphaBits, + GLint indexBits, + GLint depthBits, + GLint stencilBits, + GLint accumRedBits, + GLint accumGreenBits, + GLint accumBlueBits, + GLint accumAlphaBits, + GLint numSamples ); + +extern GLboolean +_mesa_initialize_visual( GLvisual *v, + GLboolean rgbFlag, + GLboolean dbFlag, + GLboolean stereoFlag, + GLint redBits, + GLint greenBits, + GLint blueBits, + GLint alphaBits, + GLint indexBits, + GLint depthBits, + GLint stencilBits, + GLint accumRedBits, + GLint accumGreenBits, + GLint accumBlueBits, + GLint accumAlphaBits, + GLint numSamples ); + +extern void +_mesa_destroy_visual( GLvisual *vis ); + +/*@}*/ + + +/**********************************************************************/ +/** \name Create/destroy a GLcontext. */ +/*@{*/ + +extern GLcontext * +_mesa_create_context( const GLvisual *visual, + GLcontext *share_list, + const struct dd_function_table *driverFunctions, + void *driverContext ); + +extern GLboolean +_mesa_initialize_context( GLcontext *ctx, + const GLvisual *visual, + GLcontext *share_list, + const struct dd_function_table *driverFunctions, + void *driverContext ); + +extern void +_mesa_free_context_data( GLcontext *ctx ); + +extern void +_mesa_destroy_context( GLcontext *ctx ); + + +extern void +_mesa_copy_context(const GLcontext *src, GLcontext *dst, GLuint mask); + + +extern void +_mesa_make_current( GLcontext *ctx, GLframebuffer *drawBuffer, + GLframebuffer *readBuffer ); + +extern GLboolean +_mesa_share_state(GLcontext *ctx, GLcontext *ctxToShare); + +extern GLcontext * +_mesa_get_current_context(void); + +/*@}*/ + + +/**********************************************************************/ +/** \name OpenGL SI-style export functions. */ +/*@{*/ + +extern GLboolean +_mesa_destroyContext(__GLcontext *gc); + +extern GLboolean +_mesa_loseCurrent(__GLcontext *gc); + +extern GLboolean +_mesa_makeCurrent(__GLcontext *gc); + +extern GLboolean +_mesa_shareContext(__GLcontext *gc, __GLcontext *gcShare); + +extern GLboolean +_mesa_copyContext(__GLcontext *dst, const __GLcontext *src, GLuint mask); + +extern GLboolean +_mesa_forceCurrent(__GLcontext *gc); + +extern GLboolean +_mesa_notifyResize(__GLcontext *gc); + +extern void +_mesa_notifyDestroy(__GLcontext *gc); + +extern void +_mesa_notifySwapBuffers(__GLcontext *gc); + +extern struct __GLdispatchStateRec * +_mesa_dispatchExec(__GLcontext *gc); + +extern void +_mesa_beginDispatchOverride(__GLcontext *gc); + +extern void +_mesa_endDispatchOverride(__GLcontext *gc); + +/*@}*/ + + +extern struct _glapi_table * +_mesa_get_dispatch(GLcontext *ctx); + + + +/**********************************************************************/ +/** \name Miscellaneous */ +/*@{*/ + +extern void +_mesa_record_error( GLcontext *ctx, GLenum error ); + + +extern void GLAPIENTRY +_mesa_Finish( void ); + +extern void GLAPIENTRY +_mesa_Flush( void ); + +/*@}*/ + + + +/**********************************************************************/ +/** \name Macros for contexts/flushing. */ +/*@{*/ + + +/** + * Flush vertices. + * + * \param ctx GL context. + * \param newstate new state. + * + * Checks if dd_function_table::NeedFlush is marked to flush stored vertices, + * and calls dd_function_table::FlushVertices if so. Marks + * __GLcontextRec::NewState with \p newstate. + */ +#define FLUSH_VERTICES(ctx, newstate) \ +do { \ + if (MESA_VERBOSE & VERBOSE_STATE) \ + _mesa_debug(ctx, "FLUSH_VERTICES in %s\n", MESA_FUNCTION);\ + if (ctx->Driver.NeedFlush & FLUSH_STORED_VERTICES) \ + ctx->Driver.FlushVertices(ctx, FLUSH_STORED_VERTICES); \ + ctx->NewState |= newstate; \ +} while (0) + +/** + * Flush current state. + * + * \param ctx GL context. + * \param newstate new state. + * + * Checks if dd_function_table::NeedFlush is marked to flush current state, + * and calls dd_function_table::FlushVertices if so. Marks + * __GLcontextRec::NewState with \p newstate. + */ +#define FLUSH_CURRENT(ctx, newstate) \ +do { \ + if (MESA_VERBOSE & VERBOSE_STATE) \ + _mesa_debug(ctx, "FLUSH_CURRENT in %s\n", MESA_FUNCTION); \ + if (ctx->Driver.NeedFlush & FLUSH_UPDATE_CURRENT) \ + ctx->Driver.FlushVertices(ctx, FLUSH_UPDATE_CURRENT); \ + ctx->NewState |= newstate; \ +} while (0) + +/** + * Macro to assert that the API call was made outside the + * glBegin()/glEnd() pair, with return value. + * + * \param ctx GL context. + * \param retval value to return value in case the assertion fails. + */ +#define ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, retval) \ +do { \ + if (ctx->Driver.CurrentExecPrimitive != PRIM_OUTSIDE_BEGIN_END) { \ + _mesa_error( ctx, GL_INVALID_OPERATION, "begin/end" ); \ + return retval; \ + } \ +} while (0) + +/** + * Macro to assert that the API call was made outside the + * glBegin()/glEnd() pair. + * + * \param ctx GL context. + */ +#define ASSERT_OUTSIDE_BEGIN_END(ctx) \ +do { \ + if (ctx->Driver.CurrentExecPrimitive != PRIM_OUTSIDE_BEGIN_END) { \ + _mesa_error( ctx, GL_INVALID_OPERATION, "begin/end" ); \ + return; \ + } \ +} while (0) + +/** + * Macro to assert that the API call was made outside the + * glBegin()/glEnd() pair and flush the vertices. + * + * \param ctx GL context. + */ +#define ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx) \ +do { \ + ASSERT_OUTSIDE_BEGIN_END(ctx); \ + FLUSH_VERTICES(ctx, 0); \ +} while (0) + +/** + * Macro to assert that the API call was made outside the + * glBegin()/glEnd() pair and flush the vertices, with return value. + * + * \param ctx GL context. + * \param retval value to return value in case the assertion fails. + */ +#define ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH_WITH_RETVAL(ctx, retval) \ +do { \ + ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, retval); \ + FLUSH_VERTICES(ctx, 0); \ +} while (0) + + +/*@}*/ + + + +/** + * Macros to help evaluate current state conditions + */ + +/*@{*/ + +/** + * Is the secondary color needed? + */ +#define NEED_SECONDARY_COLOR(CTX) \ + (((CTX)->Light.Enabled && \ + (CTX)->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR) \ + || (CTX)->Fog.ColorSumEnabled \ + || ((CTX)->VertexProgram._Enabled && \ + ((CTX)->VertexProgram.Current->InputsRead & VERT_BIT_COLOR1)) \ + || ((CTX)->FragmentProgram._Enabled && \ + ((CTX)->FragmentProgram.Current->InputsRead & FRAG_BIT_COL1)) \ + ) + + +/** + * Is two-sided lighting in effect? + */ +#define NEED_TWO_SIDED_LIGHTING(CTX) \ + (ctx->Light.Enabled && ctx->Light.Model.TwoSide) + + +/*@}*/ + + +#endif |