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invert Y axis

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This commit is contained in:
Brian 2007-08-10 08:33:43 +01:00
parent c7157065b2
commit d2bfdae860
1 changed files with 16 additions and 19 deletions
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35
src/mesa/drivers/x11/xm_surface.c
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@ -63,24 +63,28 @@ xmesa_rb(struct softpipe_surface *sps)
}
#define FLIP(Y) Y = xrb->St.Base.Height - (Y) - 1;
/**
* quad reading/writing
* These functions are just wrappers around the existing renderbuffer
* functions.
* Note that Y=0 is the top of the surface.
*/
static void
read_quad_f(struct softpipe_surface *sps, GLint x, GLint y,
GLfloat (*rgba)[NUM_CHANNELS])
{
struct xmesa_surface *xms = xmesa_surf(sps);
struct xmesa_renderbuffer *xrb = xmesa_rb(sps);
GLubyte temp[16];
GLfloat *dst = (GLfloat *) rgba;
GLuint i;
GET_CURRENT_CONTEXT(ctx);
FLIP(y);
xrb->St.Base.GetRow(ctx, &xrb->St.Base, 2, x, y, temp);
xrb->St.Base.GetRow(ctx, &xrb->St.Base, 2, x, y + 1, temp + 8);
xrb->St.Base.GetRow(ctx, &xrb->St.Base, 2, x, y - 1, temp + 8);
for (i = 0; i < 16; i++) {
dst[i] = UBYTE_TO_FLOAT(temp[i]);
}
@ -90,14 +94,14 @@ static void
read_quad_f_swz(struct softpipe_surface *sps, GLint x, GLint y,
GLfloat (*rrrr)[QUAD_SIZE])
{
struct xmesa_surface *xms = xmesa_surf(sps);
struct xmesa_renderbuffer *xrb = xmesa_rb(sps);
GLubyte temp[16];
GLfloat *dst = (GLfloat *) rrrr;
GLuint i, j;
GET_CURRENT_CONTEXT(ctx);
FLIP(y);
xrb->St.Base.GetRow(ctx, &xrb->St.Base, 2, x, y, temp);
xrb->St.Base.GetRow(ctx, &xrb->St.Base, 2, x, y + 1, temp + 8);
xrb->St.Base.GetRow(ctx, &xrb->St.Base, 2, x, y - 1, temp + 8);
for (i = 0; i < 4; i++) {
for (j = 0; j < 4; j++) {
dst[j * 4 + i] = UBYTE_TO_FLOAT(temp[i * 4 + j]);
@ -114,11 +118,12 @@ write_quad_f(struct softpipe_surface *sps, GLint x, GLint y,
const GLfloat *src = (const GLfloat *) rgba;
GLuint i;
GET_CURRENT_CONTEXT(ctx);
FLIP(y);
for (i = 0; i < 16; i++) {
UNCLAMPED_FLOAT_TO_UBYTE(temp[i], src[i]);
}
xrb->St.Base.PutRow(ctx, &xrb->St.Base, 2, x, y, temp, NULL);
xrb->St.Base.PutRow(ctx, &xrb->St.Base, 2, x, y + 1, temp + 8, NULL);
xrb->St.Base.PutRow(ctx, &xrb->St.Base, 2, x, y - 1, temp + 8, NULL);
}
static void
@ -130,13 +135,14 @@ write_quad_f_swz(struct softpipe_surface *sps, GLint x, GLint y,
const GLfloat *src = (const GLfloat *) rrrr;
GLuint i, j;
GET_CURRENT_CONTEXT(ctx);
FLIP(y);
for (i = 0; i < 4; i++) {
for (j = 0; j < 4; j++) {
UNCLAMPED_FLOAT_TO_UBYTE(temp[j * 4 + i], src[i * 4 + j]);
}
}
xrb->St.Base.PutRow(ctx, &xrb->St.Base, 2, x, y, temp, NULL);
xrb->St.Base.PutRow(ctx, &xrb->St.Base, 2, x, y + 1, temp + 8, NULL);
xrb->St.Base.PutRow(ctx, &xrb->St.Base, 2, x, y - 1, temp + 8, NULL);
}
static void
@ -145,8 +151,9 @@ read_quad_ub(struct softpipe_surface *sps, GLint x, GLint y,
{
struct xmesa_renderbuffer *xrb = xmesa_rb(sps);
GET_CURRENT_CONTEXT(ctx);
FLIP(y);
xrb->St.Base.GetRow(ctx, &xrb->St.Base, 2, x, y, rgba);
xrb->St.Base.GetRow(ctx, &xrb->St.Base, 2, x, y + 1, rgba + 2);
xrb->St.Base.GetRow(ctx, &xrb->St.Base, 2, x, y - 1, rgba + 2);
}
static void
@ -155,21 +162,11 @@ write_quad_ub(struct softpipe_surface *sps, GLint x, GLint y,
{
struct xmesa_renderbuffer *xrb = xmesa_rb(sps);
GET_CURRENT_CONTEXT(ctx);
FLIP(y);
xrb->St.Base.GetRow(ctx, &xrb->St.Base, 2, x, y, rgba);
xrb->St.Base.GetRow(ctx, &xrb->St.Base, 2, x, y + 1, rgba + 2);
xrb->St.Base.GetRow(ctx, &xrb->St.Base, 2, x, y - 1, rgba + 2);
}
#if 0
static void
write_mono_row_ub(struct softpipe_surface *sps, GLuint count, GLint x, GLint y,
GLubyte rgba[NUM_CHANNELS])
{
struct xmesa_renderbuffer *xrb = xmesa_rb(sps);
GET_CURRENT_CONTEXT(ctx);
xrb->St.Base.PutMonoRow(ctx, &xrb->St.Base, count, x, y, rgba, NULL);
}
#endif
/**
* Called to create a pipe_surface for each X renderbuffer.