diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/mesa/swrast/s_context.c | 19 | ||||
-rw-r--r-- | src/mesa/swrast/s_context.h | 7 | ||||
-rw-r--r-- | src/mesa/swrast/s_stencil.c | 15 |
3 files changed, 37 insertions, 4 deletions
diff --git a/src/mesa/swrast/s_context.c b/src/mesa/swrast/s_context.c index 2ebb649eade..49aa1d78884 100644 --- a/src/mesa/swrast/s_context.c +++ b/src/mesa/swrast/s_context.c @@ -798,6 +798,19 @@ _swrast_CreateContext( struct gl_context *ctx ) ctx->swrast_context = swrast; + swrast->stencil_temp.buf1 = (GLubyte *) malloc(MAX_WIDTH * sizeof(GLubyte)); + swrast->stencil_temp.buf2 = (GLubyte *) malloc(MAX_WIDTH * sizeof(GLubyte)); + swrast->stencil_temp.buf3 = (GLubyte *) malloc(MAX_WIDTH * sizeof(GLubyte)); + swrast->stencil_temp.buf4 = (GLubyte *) malloc(MAX_WIDTH * sizeof(GLubyte)); + + if (!swrast->stencil_temp.buf1 || + !swrast->stencil_temp.buf2 || + !swrast->stencil_temp.buf3 || + !swrast->stencil_temp.buf4) { + _swrast_DestroyContext(ctx); + return GL_FALSE; + } + return GL_TRUE; } @@ -814,6 +827,12 @@ _swrast_DestroyContext( struct gl_context *ctx ) if (swrast->ZoomedArrays) FREE( swrast->ZoomedArrays ); FREE( swrast->TexelBuffer ); + + free(swrast->stencil_temp.buf1); + free(swrast->stencil_temp.buf2); + free(swrast->stencil_temp.buf3); + free(swrast->stencil_temp.buf4); + FREE( swrast ); ctx->swrast_context = 0; diff --git a/src/mesa/swrast/s_context.h b/src/mesa/swrast/s_context.h index 9388c356928..26b97f78dec 100644 --- a/src/mesa/swrast/s_context.h +++ b/src/mesa/swrast/s_context.h @@ -306,6 +306,13 @@ typedef struct /** State used during execution of fragment programs */ struct gl_program_machine FragProgMachine; + /** Temporary arrays for stencil operations. To avoid large stack + * allocations. + */ + struct { + GLubyte *buf1, *buf2, *buf3, *buf4; + } stencil_temp; + } SWcontext; diff --git a/src/mesa/swrast/s_stencil.c b/src/mesa/swrast/s_stencil.c index bbfbf44cce2..3423737eebc 100644 --- a/src/mesa/swrast/s_stencil.c +++ b/src/mesa/swrast/s_stencil.c @@ -210,7 +210,8 @@ static GLboolean do_stencil_test(struct gl_context *ctx, GLuint face, GLuint n, GLubyte stencil[], GLubyte mask[], GLint stride) { - GLubyte fail[MAX_WIDTH]; + SWcontext *swrast = SWRAST_CONTEXT(ctx); + GLubyte *fail = swrast->stencil_temp.buf2; GLboolean allfail = GL_FALSE; GLuint i, j; const GLuint valueMask = ctx->Stencil.ValueMask[face]; @@ -347,6 +348,7 @@ put_s8_values(struct gl_context *ctx, struct gl_renderbuffer *rb, GLboolean _swrast_stencil_and_ztest_span(struct gl_context *ctx, SWspan *span) { + SWcontext *swrast = SWRAST_CONTEXT(ctx); struct gl_framebuffer *fb = ctx->DrawBuffer; struct gl_renderbuffer *rb = fb->Attachment[BUFFER_STENCIL].Renderbuffer; const GLint stencilOffset = get_stencil_offset(rb->Format); @@ -354,7 +356,7 @@ _swrast_stencil_and_ztest_span(struct gl_context *ctx, SWspan *span) const GLuint face = (span->facing == 0) ? 0 : ctx->Stencil._BackFace; const GLuint count = span->end; GLubyte *mask = span->array->mask; - GLubyte stencilTemp[MAX_WIDTH]; + GLubyte *stencilTemp = swrast->stencil_temp.buf1; GLubyte *stencilBuf; if (span->arrayMask & SPAN_XY) { @@ -402,7 +404,10 @@ _swrast_stencil_and_ztest_span(struct gl_context *ctx, SWspan *span) /* * Perform depth buffering, then apply zpass or zfail stencil function. */ - GLubyte passMask[MAX_WIDTH], failMask[MAX_WIDTH], origMask[MAX_WIDTH]; + SWcontext *swrast = SWRAST_CONTEXT(ctx); + GLubyte *passMask = swrast->stencil_temp.buf2; + GLubyte *failMask = swrast->stencil_temp.buf3; + GLubyte *origMask = swrast->stencil_temp.buf4; /* save the current mask bits */ memcpy(origMask, mask, count * sizeof(GLubyte)); @@ -488,6 +493,7 @@ void _swrast_write_stencil_span(struct gl_context *ctx, GLint n, GLint x, GLint y, const GLubyte stencil[] ) { + SWcontext *swrast = SWRAST_CONTEXT(ctx); struct gl_framebuffer *fb = ctx->DrawBuffer; struct gl_renderbuffer *rb = fb->Attachment[BUFFER_STENCIL].Renderbuffer; const GLuint stencilMax = (1 << fb->Visual.stencilBits) - 1; @@ -517,7 +523,8 @@ _swrast_write_stencil_span(struct gl_context *ctx, GLint n, GLint x, GLint y, if ((stencilMask & stencilMax) != stencilMax) { /* need to apply writemask */ - GLubyte destVals[MAX_WIDTH], newVals[MAX_WIDTH]; + GLubyte *destVals = swrast->stencil_temp.buf1; + GLubyte *newVals = swrast->stencil_temp.buf2; GLint i; _mesa_unpack_ubyte_stencil_row(rb->Format, n, stencilBuf, destVals); |