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nouveau: nv10: set projection matrix from viewport size

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This commit is contained in:
Patrice Mandin 2007-08-22 11:01:59 +02:00
parent 24746d0e32
commit a3750c989b
1 changed files with 33 additions and 18 deletions
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51
src/mesa/drivers/dri/nouveau/nv10_state.c
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@ -37,29 +37,43 @@ USE OR OTHER DEALINGS IN THE SOFTWARE.
static void nv10ViewportScale(nouveauContextPtr nmesa)
{
GLcontext *ctx = nmesa->glCtx;
GLuint w = ctx->Viewport.Width;
GLuint h = ctx->Viewport.Height;
GLuint w = ((GLfloat) ctx->Viewport.Width) * 0.5;
GLuint h = ((GLfloat) ctx->Viewport.Height) * 0.5;
GLfloat max_depth = (ctx->Viewport.Near + ctx->Viewport.Far) * 0.5;
/* if (ctx->DrawBuffer) {
switch (ctx->DrawBuffer->_DepthBuffer->DepthBits) {
case 16:
max_depth *= 32767.0;
break;
case 24:
max_depth *= 16777215.0;
break;
}
} else {*/
/* Default to 24 bits range */
max_depth *= 16777215.0;
/* }*/
GLfloat projection[16];
int i;
if (!ctx->DrawBuffer) {
return;
}
if (!ctx->DrawBuffer->_DepthBuffer) {
return;
}
switch (ctx->DrawBuffer->_DepthBuffer->DepthBits) {
case 16:
max_depth *= 32767.0;
break;
case 24:
max_depth *= 16777215.0;
break;
}
BEGIN_RING_CACHE(NvSub3D, NV10_TCL_PRIMITIVE_3D_VIEWPORT_SCALE_X, 4);
OUT_RING_CACHEf ((((GLfloat) w) * 0.5) - 2048.0);
OUT_RING_CACHEf ((((GLfloat) h) * 0.5) - 2048.0);
OUT_RING_CACHEf (w - 2048.0);
OUT_RING_CACHEf (h - 2048.0);
OUT_RING_CACHEf (max_depth);
OUT_RING_CACHEf (0.0);
memset(projection, 0, sizeof(projection));
projection[0*4+0] = w;
projection[1*4+1] = h;
projection[2*4+2] = max_depth;
projection[3*4+3] = 1.0;
BEGIN_RING_CACHE(NvSub3D, NV10_TCL_PRIMITIVE_3D_PROJECTION_MATRIX(0), 16);
for (i=0; i<16; i++) {
OUT_RING_CACHEf (projection[i]);
}
}
static void nv10AlphaFunc(GLcontext *ctx, GLenum func, GLfloat ref)
@ -774,6 +788,7 @@ static GLboolean nv10InitCard(nouveauContextPtr nmesa)
/* Set state for stuff not initialized in nouveau_state.c */
BEGIN_RING_SIZE(NvSub3D, NV10_TCL_PRIMITIVE_3D_TX_ENABLE(0), 2);
OUT_RING (0);
OUT_RING (0);
BEGIN_RING_SIZE(NvSub3D, NV10_TCL_PRIMITIVE_3D_RC_IN_ALPHA(0), 12);
OUT_RING (0x30141010);
OUT_RING (0);