| 0,0 → 1,326 |
|---|
| /* |
| * Mesa 3-D graphics library |
| * Version: 6.5.1 |
| * |
| * Copyright (C) 1999-2006 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. |
| */ |
| |
| |
| /** |
| * \file context.h |
| * Mesa context and visual-related functions. |
| * |
| * There are three large Mesa data types/classes which are meant to be |
| * used by device drivers: |
| * - struct gl_context: this contains the Mesa rendering state |
| * - struct gl_config: this describes the color buffer (RGB vs. ci), whether or not |
| * there's a depth buffer, stencil buffer, etc. |
| * - struct gl_framebuffer: 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, struct gl_context, struct gl_config, and struct gl_framebuffer are base classes |
| * which the device driver must derive from. |
| * |
| * The following functions create and destroy these data types. |
| */ |
| |
| |
| #ifndef CONTEXT_H |
| #define CONTEXT_H |
| |
| |
| #include "imports.h" |
| #include "mtypes.h" |
| |
| |
| struct _glapi_table; |
| |
| |
| /** \name Visual-related functions */ |
| /*@{*/ |
| |
| extern struct gl_config * |
| _mesa_create_visual( GLboolean dbFlag, |
| GLboolean stereoFlag, |
| GLint redBits, |
| GLint greenBits, |
| GLint blueBits, |
| GLint alphaBits, |
| GLint depthBits, |
| GLint stencilBits, |
| GLint accumRedBits, |
| GLint accumGreenBits, |
| GLint accumBlueBits, |
| GLint accumAlphaBits, |
| GLint numSamples ); |
| |
| extern GLboolean |
| _mesa_initialize_visual( struct gl_config *v, |
| GLboolean dbFlag, |
| GLboolean stereoFlag, |
| GLint redBits, |
| GLint greenBits, |
| GLint blueBits, |
| GLint alphaBits, |
| GLint depthBits, |
| GLint stencilBits, |
| GLint accumRedBits, |
| GLint accumGreenBits, |
| GLint accumBlueBits, |
| GLint accumAlphaBits, |
| GLint numSamples ); |
| |
| extern void |
| _mesa_destroy_visual( struct gl_config *vis ); |
| |
| /*@}*/ |
| |
| |
| /** \name Context-related functions */ |
| /*@{*/ |
| |
| extern struct gl_context * |
| _mesa_create_context( const struct gl_config *visual, |
| struct gl_context *share_list, |
| const struct dd_function_table *driverFunctions, |
| void *driverContext ); |
| |
| extern GLboolean |
| _mesa_initialize_context( struct gl_context *ctx, |
| const struct gl_config *visual, |
| struct gl_context *share_list, |
| const struct dd_function_table *driverFunctions, |
| void *driverContext ); |
| |
| extern struct gl_context * |
| _mesa_create_context_for_api(gl_api api, |
| const struct gl_config *visual, |
| struct gl_context *share_list, |
| const struct dd_function_table *driverFunctions, |
| void *driverContext); |
| |
| extern GLboolean |
| _mesa_initialize_context_for_api(struct gl_context *ctx, |
| gl_api api, |
| const struct gl_config *visual, |
| struct gl_context *share_list, |
| const struct dd_function_table *driverFunctions, |
| void *driverContext); |
| |
| extern void |
| _mesa_free_context_data( struct gl_context *ctx ); |
| |
| extern void |
| _mesa_destroy_context( struct gl_context *ctx ); |
| |
| |
| extern void |
| _mesa_copy_context(const struct gl_context *src, struct gl_context *dst, GLuint mask); |
| |
| |
| extern void |
| _mesa_check_init_viewport(struct gl_context *ctx, GLuint width, GLuint height); |
| |
| extern GLboolean |
| _mesa_make_current( struct gl_context *ctx, struct gl_framebuffer *drawBuffer, |
| struct gl_framebuffer *readBuffer ); |
| |
| extern GLboolean |
| _mesa_share_state(struct gl_context *ctx, struct gl_context *ctxToShare); |
| |
| extern struct gl_context * |
| _mesa_get_current_context(void); |
| |
| /*@}*/ |
| |
| extern void |
| _mesa_init_get_hash(struct gl_context *ctx); |
| |
| extern void |
| _mesa_notifySwapBuffers(struct gl_context *gc); |
| |
| |
| extern struct _glapi_table * |
| _mesa_get_dispatch(struct gl_context *ctx); |
| |
| |
| void |
| _mesa_set_mvp_with_dp4( struct gl_context *ctx, |
| GLboolean flag ); |
| |
| |
| extern GLboolean |
| _mesa_valid_to_render(struct gl_context *ctx, const char *where); |
| |
| |
| |
| /** \name Miscellaneous */ |
| /*@{*/ |
| |
| extern void |
| _mesa_record_error( struct gl_context *ctx, GLenum error ); |
| |
| |
| extern void |
| _mesa_finish(struct gl_context *ctx); |
| |
| extern void |
| _mesa_flush(struct gl_context *ctx); |
| |
| |
| extern void GLAPIENTRY |
| _mesa_Finish( void ); |
| |
| extern void GLAPIENTRY |
| _mesa_Flush( void ); |
| |
| /*@}*/ |
| |
| |
| /** |
| * \name Macros for flushing buffered rendering commands before state changes, |
| * checking if inside glBegin/glEnd, etc. |
| */ |
| /*@{*/ |
| |
| /** |
| * 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 |
| * __struct gl_contextRec::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 |
| * __struct gl_contextRec::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, "Inside glBegin/glEnd"); \ |
| 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, "Inside glBegin/glEnd"); \ |
| 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) |
| |
| /*@}*/ |
| |
| |
| |
| /** |
| * 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._Current && \ |
| ((CTX)->VertexProgram._Current != (CTX)->VertexProgram._TnlProgram) && \ |
| ((CTX)->VertexProgram._Current->Base.InputsRead & VERT_BIT_COLOR1)) \ |
| || ((CTX)->FragmentProgram._Current && \ |
| ((CTX)->FragmentProgram._Current != (CTX)->FragmentProgram._TexEnvProgram) && \ |
| ((CTX)->FragmentProgram._Current->Base.InputsRead & FRAG_BIT_COL1)) \ |
| ) |
| |
| |
| /** |
| * Is RGBA LogicOp enabled? |
| */ |
| #define RGBA_LOGICOP_ENABLED(CTX) \ |
| ((CTX)->Color.ColorLogicOpEnabled || \ |
| ((CTX)->Color.BlendEnabled && (CTX)->Color.BlendEquationRGB == GL_LOGIC_OP)) |
| |
| |
| #endif /* CONTEXT_H */ |