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meas: Use a read/write transfer when writing stencil component, but not touching the depth component.

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This commit is contained in:
José Fonseca 2009-06-11 11:47:20 +01:00
parent 337f559cd2
commit 96aca15c9d
1 changed files with 23 additions and 2 deletions
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25
src/mesa/state_tracker/st_cb_drawpixels.c
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@ -630,6 +630,7 @@ draw_stencil_pixels(GLcontext *ctx, GLint x, GLint y,
struct pipe_context *pipe = st->pipe;
struct pipe_screen *screen = pipe->screen;
struct st_renderbuffer *strb;
enum pipe_transfer_usage usage;
struct pipe_transfer *pt;
const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0;
GLint skipPixels;
@ -642,8 +643,14 @@ draw_stencil_pixels(GLcontext *ctx, GLint x, GLint y,
y = ctx->DrawBuffer->Height - y - height;
}
if(format == GL_DEPTH_STENCIL &&
pf_get_component_bits( strb->format, PIPE_FORMAT_COMP_Z ) != 0)
usage = PIPE_TRANSFER_READ_WRITE;
else
usage = PIPE_TRANSFER_WRITE;
pt = st_cond_flush_get_tex_transfer(st_context(ctx), strb->texture, 0, 0, 0,
PIPE_TRANSFER_WRITE, x, y,
usage, x, y,
width, height);
stmap = screen->transfer_map(screen, pt);
@ -694,6 +701,7 @@ draw_stencil_pixels(GLcontext *ctx, GLint x, GLint y,
case PIPE_FORMAT_S8_UNORM:
{
ubyte *dest = stmap + spanY * pt->stride + spanX;
assert(usage == PIPE_TRANSFER_WRITE);
memcpy(dest, sValues, spanWidth);
}
break;
@ -701,6 +709,7 @@ draw_stencil_pixels(GLcontext *ctx, GLint x, GLint y,
if (format == GL_DEPTH_STENCIL) {
uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);
GLint k;
assert(usage == PIPE_TRANSFER_WRITE);
for (k = 0; k < spanWidth; k++) {
dest[k] = zValues[k] | (sValues[k] << 24);
}
@ -708,6 +717,7 @@ draw_stencil_pixels(GLcontext *ctx, GLint x, GLint y,
else {
uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);
GLint k;
assert(usage == PIPE_TRANSFER_READ_WRITE);
for (k = 0; k < spanWidth; k++) {
dest[k] = (dest[k] & 0xffffff) | (sValues[k] << 24);
}
@ -717,6 +727,7 @@ draw_stencil_pixels(GLcontext *ctx, GLint x, GLint y,
if (format == GL_DEPTH_STENCIL) {
uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);
GLint k;
assert(usage == PIPE_TRANSFER_WRITE);
for (k = 0; k < spanWidth; k++) {
dest[k] = (zValues[k] << 8) | (sValues[k] & 0xff);
}
@ -724,6 +735,7 @@ draw_stencil_pixels(GLcontext *ctx, GLint x, GLint y,
else {
uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);
GLint k;
assert(usage == PIPE_TRANSFER_READ_WRITE);
for (k = 0; k < spanWidth; k++) {
dest[k] = (dest[k] & 0xffffff00) | (sValues[k] & 0xff);
}
@ -811,6 +823,7 @@ copy_stencil_pixels(GLcontext *ctx, GLint srcx, GLint srcy,
{
struct st_renderbuffer *rbDraw = st_renderbuffer(ctx->DrawBuffer->_StencilBuffer);
struct pipe_screen *screen = ctx->st->pipe->screen;
enum pipe_transfer_usage usage;
struct pipe_transfer *ptDraw;
ubyte *drawMap;
ubyte *buffer;
@ -827,9 +840,14 @@ copy_stencil_pixels(GLcontext *ctx, GLint srcx, GLint srcy,
GL_STENCIL_INDEX, GL_UNSIGNED_BYTE,
&ctx->DefaultPacking, buffer);
if(pf_get_component_bits( ptDraw->format, PIPE_FORMAT_COMP_Z ) != 0)
usage = PIPE_TRANSFER_READ_WRITE;
else
usage = PIPE_TRANSFER_WRITE;
ptDraw = st_cond_flush_get_tex_transfer(st_context(ctx),
rbDraw->texture, 0, 0, 0,
PIPE_TRANSFER_WRITE, dstx, dsty,
usage, dstx, dsty,
width, height);
assert(ptDraw->block.width == 1);
@ -859,6 +877,7 @@ copy_stencil_pixels(GLcontext *ctx, GLint srcx, GLint srcy,
{
uint *dst4 = (uint *) dst;
int j;
assert(usage == PIPE_TRANSFER_READ_WRITE);
for (j = 0; j < width; j++) {
*dst4 = (*dst4 & 0xffffff) | (src[j] << 24);
dst4++;
@ -869,6 +888,7 @@ copy_stencil_pixels(GLcontext *ctx, GLint srcx, GLint srcy,
{
uint *dst4 = (uint *) dst;
int j;
assert(usage == PIPE_TRANSFER_READ_WRITE);
for (j = 0; j < width; j++) {
*dst4 = (*dst4 & 0xffffff00) | (src[j] & 0xff);
dst4++;
@ -876,6 +896,7 @@ copy_stencil_pixels(GLcontext *ctx, GLint srcx, GLint srcy,
}
break;
case PIPE_FORMAT_S8_UNORM:
assert(usage == PIPE_TRANSFER_WRITE);
memcpy(dst, src, width);
break;
default: