mesa: Replace MESA_FORMAT_L8A8/A8L8 UNORM/SNORM/SRGB with an array format.

[mesa.git] / src / mesa / swrast / s_depth.c

diff --git a/src/mesa/swrast/s_depth.c b/src/mesa/swrast/s_depth.c
index 134f897c039fb31cd4743051b88119ca7f19eeed..6bc737c79568e16e3852caac7b39f0d22c16f18d 100644 (file)
--- a/src/mesa/swrast/s_depth.c
+++ b/src/mesa/swrast/s_depth.c
@@ -262,7 +262,7 @@ put_z32_values(struct gl_context *ctx, struct gl_renderbuffer *rb,
       }
    }
    else {
-      gl_pack_uint_z_func packZ = _mesa_get_pack_uint_z_func(rb->Format);
+      mesa_pack_uint_z_func packZ = _mesa_get_pack_uint_z_func(rb->Format);
       const GLint bpp = _mesa_get_format_bytes(rb->Format);
       const GLint rowStride = srb->RowStride;
       for (i = 0; i < count; i++) {
@@ -310,12 +310,6 @@ _swrast_depth_test_span(struct gl_context *ctx, SWspan *span)
       zBufferVals = zStart;
    }
    else {
-      if (_mesa_get_format_datatype(rb->Format) != GL_UNSIGNED_NORMALIZED) {
-         _mesa_problem(ctx, "Incorrectly writing swrast's integer depth "
-                       "values to %s depth buffer",
-                       _mesa_get_format_name(rb->Format));
-      }
-
       /* copy Z buffer values into temp buffer (32-bit Z values) */
       zBufferTemp = malloc(count * sizeof(GLuint));
       if (!zBufferTemp)
@@ -385,7 +379,7 @@ _swrast_depth_test_span(struct gl_context *ctx, SWspan *span)
       }
       else {
          /* horizontal row */
-         gl_pack_uint_z_func packZ = _mesa_get_pack_uint_z_func(rb->Format);
+         mesa_pack_uint_z_func packZ = _mesa_get_pack_uint_z_func(rb->Format);
          GLubyte *dst = zStart;
          GLuint i;
          for (i = 0; i < count; i++) {
@@ -419,8 +413,8 @@ _swrast_depth_bounds_test( struct gl_context *ctx, SWspan *span )
    struct gl_framebuffer *fb = ctx->DrawBuffer;
    struct gl_renderbuffer *rb = fb->Attachment[BUFFER_DEPTH].Renderbuffer;
    GLubyte *zStart;
-   GLuint zMin = (GLuint) (ctx->Depth.BoundsMin * fb->_DepthMaxF + 0.5F);
-   GLuint zMax = (GLuint) (ctx->Depth.BoundsMax * fb->_DepthMaxF + 0.5F);
+   GLuint zMin = (GLuint)((double)ctx->Depth.BoundsMin * 0xffffffff);
+   GLuint zMax = (GLuint)((double)ctx->Depth.BoundsMax * 0xffffffff);
    GLubyte *mask = span->array->mask;
    const GLuint count = span->end;
    GLuint i;
@@ -444,6 +438,16 @@ _swrast_depth_bounds_test( struct gl_context *ctx, SWspan *span )
       zBufferVals = (const GLuint *) zStart;
    }
    else {
+      /* Round the bounds to the precision of the zbuffer. */
+      if (rb->Format == MESA_FORMAT_Z_UNORM16) {
+         zMin = (zMin & 0xffff0000) | (zMin >> 16);
+         zMax = (zMax & 0xffff0000) | (zMax >> 16);
+      } else {
+         /* 24 bits */
+         zMin = (zMin & 0xffffff00) | (zMin >> 24);
+         zMax = (zMax & 0xffffff00) | (zMax >> 24);
+      }
+
       /* unpack Z values into a temporary array */
       if (span->arrayMask & SPAN_XY) {
          get_z32_values(ctx, rb, count, span->array->x, span->array->y,
@@ -560,7 +564,8 @@ _swrast_clear_depth_buffer(struct gl_context *ctx)
    }
 
    ctx->Driver.MapRenderbuffer(ctx, rb, x, y, width, height,
-                               mapMode, &map, &rowStride);
+                               mapMode, &map, &rowStride,
+                               ctx->DrawBuffer->FlipY);
    if (!map) {
       _mesa_error(ctx, GL_OUT_OF_MEMORY, "glClear(depth)");
       return;
@@ -685,7 +690,8 @@ _swrast_clear_depth_stencil_buffer(struct gl_context *ctx)
    }
 
    ctx->Driver.MapRenderbuffer(ctx, rb, x, y, width, height,
-                               mapMode, &map, &rowStride);
+                               mapMode, &map, &rowStride,
+                               ctx->DrawBuffer->FlipY);
    if (!map) {
       _mesa_error(ctx, GL_OUT_OF_MEMORY, "glClear(depth+stencil)");
       return;