diff options
Diffstat (limited to 'src/mesa/main/depth.c')
| -rw-r--r-- | src/mesa/main/depth.c | 64 |
1 files changed, 38 insertions, 26 deletions
diff --git a/src/mesa/main/depth.c b/src/mesa/main/depth.c index 2f9697616e0..88a0a1a69db 100644 --- a/src/mesa/main/depth.c +++ b/src/mesa/main/depth.c @@ -1,4 +1,4 @@ -/* $Id: depth.c,v 1.15 2000/03/19 01:10:11 brianp Exp $ */ +/* $Id: depth.c,v 1.16 2000/04/04 00:54:23 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -382,7 +382,7 @@ depth_test_span16( GLcontext *ctx, GLuint n, GLint x, GLint y, } break; case GL_NEVER: - MEMSET(mask, 0, n * sizeof(GLubyte)); + BZERO(mask, n * sizeof(GLubyte)); break; default: gl_problem(ctx, "Bad depth func in depth_test_span16"); @@ -611,7 +611,7 @@ depth_test_span32( GLcontext *ctx, GLuint n, GLint x, GLint y, } break; case GL_NEVER: - MEMSET(mask, 0, n * sizeof(GLubyte)); + BZERO(mask, n * sizeof(GLubyte)); break; default: gl_problem(ctx, "Bad depth func in depth_test_span32"); @@ -894,7 +894,7 @@ software_depth_test_pixels16( GLcontext *ctx, GLuint n, break; case GL_NEVER: /* depth test never passes */ - MEMSET(mask, 0, n * sizeof(GLubyte)); + BZERO(mask, n * sizeof(GLubyte)); break; default: gl_problem(ctx, "Bad depth func in software_depth_test_pixels"); @@ -1140,7 +1140,7 @@ software_depth_test_pixels32( GLcontext *ctx, GLuint n, break; case GL_NEVER: /* depth test never passes */ - MEMSET(mask, 0, n * sizeof(GLubyte)); + BZERO(mask, n * sizeof(GLubyte)); break; default: gl_problem(ctx, "Bad depth func in software_depth_test_pixels"); @@ -1374,7 +1374,7 @@ hardware_depth_test_pixels( GLcontext *ctx, GLuint n, GLdepth zbuffer[], break; case GL_NEVER: /* depth test never passes */ - MEMSET(mask, 0, n * sizeof(GLubyte)); + BZERO(mask, n * sizeof(GLubyte)); break; default: gl_problem(ctx, "Bad depth func in hardware_depth_test_pixels"); @@ -1459,7 +1459,7 @@ _mesa_read_depth_span_float( GLcontext* ctx, } else { /* no depth buffer */ - MEMSET(depth, 0, n * sizeof(GLfloat)); + BZERO(depth, n * sizeof(GLfloat)); } } @@ -1565,9 +1565,15 @@ _mesa_clear_depth_buffer( GLcontext *ctx ) if (ctx->Visual->DepthBits <= 16) { const GLushort clearValue = (GLushort) (ctx->Depth.Clear * ctx->Visual->DepthMax); if ((clearValue & 0xff) == (clearValue >> 8)) { - /* lower and upper bytes of clear_value are same, use MEMSET */ - MEMSET( ctx->DrawBuffer->DepthBuffer, clearValue & 0xff, - 2 * ctx->DrawBuffer->Width * ctx->DrawBuffer->Height); + if (clearValue == 0) { + BZERO(ctx->DrawBuffer->DepthBuffer, + 2*ctx->DrawBuffer->Width*ctx->DrawBuffer->Height); + } + else { + /* lower and upper bytes of clear_value are same, use MEMSET */ + MEMSET( ctx->DrawBuffer->DepthBuffer, clearValue & 0xff, + 2 * ctx->DrawBuffer->Width * ctx->DrawBuffer->Height); + } } else { GLushort *d = (GLushort *) ctx->DrawBuffer->DepthBuffer; @@ -1592,24 +1598,30 @@ _mesa_clear_depth_buffer( GLcontext *ctx ) } else { /* >16 bit depth buffer */ - GLuint *d = (GLuint *) ctx->DrawBuffer->DepthBuffer; const GLuint clearValue = (GLuint) (ctx->Depth.Clear * ctx->Visual->DepthMax); - GLint n = ctx->DrawBuffer->Width * ctx->DrawBuffer->Height; - while (n >= 16) { - d[0] = clearValue; d[1] = clearValue; - d[2] = clearValue; d[3] = clearValue; - d[4] = clearValue; d[5] = clearValue; - d[6] = clearValue; d[7] = clearValue; - d[8] = clearValue; d[9] = clearValue; - d[10] = clearValue; d[11] = clearValue; - d[12] = clearValue; d[13] = clearValue; - d[14] = clearValue; d[15] = clearValue; - d += 16; - n -= 16; + if (clearValue == 0) { + BZERO(ctx->DrawBuffer->DepthBuffer, + ctx->DrawBuffer->Width*ctx->DrawBuffer->Height*sizeof(GLuint)); } - while (n > 0) { - *d++ = clearValue; - n--; + else { + GLint n = ctx->DrawBuffer->Width * ctx->DrawBuffer->Height; + GLuint *d = (GLuint *) ctx->DrawBuffer->DepthBuffer; + while (n >= 16) { + d[0] = clearValue; d[1] = clearValue; + d[2] = clearValue; d[3] = clearValue; + d[4] = clearValue; d[5] = clearValue; + d[6] = clearValue; d[7] = clearValue; + d[8] = clearValue; d[9] = clearValue; + d[10] = clearValue; d[11] = clearValue; + d[12] = clearValue; d[13] = clearValue; + d[14] = clearValue; d[15] = clearValue; + d += 16; + n -= 16; + } + while (n > 0) { + *d++ = clearValue; + n--; + } } } } |