diff options
Diffstat (limited to 'src/mesa/main')
-rw-r--r-- | src/mesa/main/context.c | 41 | ||||
-rw-r--r-- | src/mesa/main/context.h | 3 | ||||
-rw-r--r-- | src/mesa/main/mtypes.h | 2 |
3 files changed, 34 insertions, 12 deletions
diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c index a947f69632f..0a4c9acdfe9 100644 --- a/src/mesa/main/context.c +++ b/src/mesa/main/context.c @@ -1256,6 +1256,24 @@ initialize_framebuffer_size(GLcontext *ctx, GLframebuffer *fb) /** + * Check if the viewport/scissor size has not yet been initialized. + * Initialize the size if the given width and height are non-zero. + */ +void +_mesa_check_init_viewport(GLcontext *ctx, GLuint width, GLuint height) +{ + if (!ctx->ViewportInitialized && width > 0 && height > 0) { + /* Note: set flag here, before calling _mesa_set_viewport(), to prevent + * potential infinite recursion. + */ + ctx->ViewportInitialized = GL_TRUE; + _mesa_set_viewport(ctx, 0, 0, width, height); + _mesa_set_scissor(ctx, 0, 0, width, height); + } +} + + +/** * Bind the given context to the given drawBuffer and readBuffer and * make it the current context for the calling thread. * We'll render into the drawBuffer and read pixels from the @@ -1372,25 +1390,24 @@ _mesa_make_current( GLcontext *newCtx, GLframebuffer *drawBuffer, ASSERT(drawBuffer->Height > 0); #endif - if (newCtx->FirstTimeCurrent) { - /* set initial viewport and scissor size now */ - _mesa_set_viewport(newCtx, 0, 0, - drawBuffer->Width, drawBuffer->Height); - _mesa_set_scissor(newCtx, 0, 0, - drawBuffer->Width, drawBuffer->Height ); - check_context_limits(newCtx); + if (drawBuffer) { + _mesa_check_init_viewport(newCtx, + drawBuffer->Width, drawBuffer->Height); } } - /* We can use this to help debug user's problems. Tell them to set - * the MESA_INFO env variable before running their app. Then the - * first time each context is made current we'll print some useful - * information. - */ if (newCtx->FirstTimeCurrent) { + check_context_limits(newCtx); + + /* We can use this to help debug user's problems. Tell them to set + * the MESA_INFO env variable before running their app. Then the + * first time each context is made current we'll print some useful + * information. + */ if (_mesa_getenv("MESA_INFO")) { _mesa_print_info(); } + newCtx->FirstTimeCurrent = GL_FALSE; } } diff --git a/src/mesa/main/context.h b/src/mesa/main/context.h index 6b3e1b2b973..0531ae8ee86 100644 --- a/src/mesa/main/context.h +++ b/src/mesa/main/context.h @@ -130,6 +130,9 @@ extern void _mesa_copy_context(const GLcontext *src, GLcontext *dst, GLuint mask); +extern void +_mesa_check_init_viewport(GLcontext *ctx, GLuint width, GLuint height); + extern GLboolean _mesa_make_current( GLcontext *ctx, GLframebuffer *drawBuffer, GLframebuffer *readBuffer ); diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h index 50dc2def87f..8872c8963f5 100644 --- a/src/mesa/main/mtypes.h +++ b/src/mesa/main/mtypes.h @@ -2947,6 +2947,8 @@ struct __GLcontextRec GLenum RenderMode; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */ GLbitfield NewState; /**< bitwise-or of _NEW_* flags */ + GLboolean ViewportInitialized; /**< has viewport size been initialized? */ + GLbitfield varying_vp_inputs; /**< mask of VERT_BIT_* flags */ /** \name Derived state */ |