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Merge pull request #23 from JayFoxRox/anti-aliasing 

Very basic anti-aliasing handling
This commit is contained in:
espes 2015-07-29 08:34:56 +10:00
parent ce947a5458 4fc7b1bb7f
commit 80ac3f252f
1 changed files with 55 additions and 20 deletions
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75
hw/xbox/nv2a.c
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@ -763,6 +763,10 @@ static void gl_debug_label(GLenum target, GLuint name, const char *fmt, ...)
# define NV097_SET_SURFACE_FORMAT_TYPE 0x00000F00
# define NV097_SET_SURFACE_FORMAT_TYPE_PITCH 0x1
# define NV097_SET_SURFACE_FORMAT_TYPE_SWIZZLE 0x2
# define NV097_SET_SURFACE_FORMAT_ANTI_ALIASING 0x0000F000
# define NV097_SET_SURFACE_FORMAT_ANTI_ALIASING_CENTER_1 0
# define NV097_SET_SURFACE_FORMAT_ANTI_ALIASING_CENTER_CORNER_2 1
# define NV097_SET_SURFACE_FORMAT_ANTI_ALIASING_SQUARE_OFFSET_4 2
# define NV097_SET_SURFACE_FORMAT_WIDTH 0x00FF0000
# define NV097_SET_SURFACE_FORMAT_HEIGHT 0xFF000000
# define NV097_SET_SURFACE_PITCH 0x0097020C
@ -1383,6 +1387,7 @@ typedef struct SurfaceShape {
unsigned int log_width, log_height;
unsigned int clip_x, clip_y;
unsigned int clip_width, clip_height;
unsigned int anti_aliasing;
} SurfaceShape;
typedef struct TextureShape {
@ -2984,6 +2989,39 @@ static ShaderBinding* generate_shaders(const ShaderState state)
return ret;
}
static unsigned int pgraph_apply_anti_aliasing_factor(PGRAPHState *pg,
unsigned int *width,
unsigned int *height) {
switch (pg->surface_shape.anti_aliasing) {
case NV097_SET_SURFACE_FORMAT_ANTI_ALIASING_CENTER_1:
break;
case NV097_SET_SURFACE_FORMAT_ANTI_ALIASING_CENTER_CORNER_2:
if (width) { *width *= 2; }
break;
case NV097_SET_SURFACE_FORMAT_ANTI_ALIASING_SQUARE_OFFSET_4:
if (width) { *width *= 2; }
if (height) { *height *= 2; }
break;
default:
assert(false);
break;
}
}
static void pgraph_get_surface_dimensions(PGRAPHState *pg,
unsigned int *width,
unsigned int *height)
{
bool swizzle = (pg->surface_type == NV097_SET_SURFACE_FORMAT_TYPE_SWIZZLE);
if (swizzle) {
*width = 1 << pg->surface_shape.log_width;
*height = 1 << pg->surface_shape.log_height;
} else {
*width = pg->surface_shape.clip_width;
*height = pg->surface_shape.clip_height;
}
}
static void pgraph_bind_shaders(PGRAPHState *pg)
{
int i, j;
@ -3229,6 +3267,7 @@ static void pgraph_bind_shaders(PGRAPHState *pg)
}
/* estimate the viewport by assuming it matches the surface ... */
//FIXME: Get surface dimensions?
float m11 = 0.5 * pg->surface_shape.clip_width;
float m22 = -0.5 * pg->surface_shape.clip_height;
float m33 = zclip_max - zclip_min;
@ -3277,21 +3316,6 @@ static void pgraph_bind_shaders(PGRAPHState *pg)
NV2A_GL_DGROUP_END();
}
static void pgraph_get_surface_dimensions(NV2AState *d,
unsigned int *width,
unsigned int *height)
{
bool swizzle = (d->pgraph.surface_type
== NV097_SET_SURFACE_FORMAT_TYPE_SWIZZLE);
if (swizzle) {
*width = 1 << d->pgraph.surface_shape.log_width;
*height = 1 << d->pgraph.surface_shape.log_height;
} else {
*width = d->pgraph.surface_shape.clip_width;
*height = d->pgraph.surface_shape.clip_height;
}
}
static bool pgraph_framebuffer_dirty(PGRAPHState *pg)
{
bool shape_changed = memcmp(&pg->surface_shape, &pg->last_surface_shape,
@ -3336,7 +3360,8 @@ static void pgraph_update_surface(NV2AState *d,
NV_PGRAPH_SETUPRASTER_Z_FORMAT);
unsigned int width, height;
pgraph_get_surface_dimensions(d, &width, &height);
pgraph_get_surface_dimensions(pg, &width, &height);
pgraph_apply_anti_aliasing_factor(pg, &width, &height);
color = color && pgraph_color_write_enabled(pg);
zeta = zeta && pgraph_zeta_write_enabled(pg);
@ -4173,6 +4198,8 @@ static void pgraph_method(NV2AState *d,
GET_MASK(parameter, NV097_SET_SURFACE_FORMAT_ZETA);
pg->surface_type =
GET_MASK(parameter, NV097_SET_SURFACE_FORMAT_TYPE);
pg->surface_shape.anti_aliasing =
GET_MASK(parameter, NV097_SET_SURFACE_FORMAT_ANTI_ALIASING);
pg->surface_shape.log_width =
GET_MASK(parameter, NV097_SET_SURFACE_FORMAT_WIDTH);
pg->surface_shape.log_height =
@ -4884,7 +4911,8 @@ static void pgraph_method(NV2AState *d,
unsigned int width, height;
pgraph_get_surface_dimensions(d, &width, &height);
pgraph_get_surface_dimensions(pg, &width, &height);
pgraph_apply_anti_aliasing_factor(pg, &width, &height);
glViewport(0, 0, width, height);
pg->inline_elements_length = 0;
@ -5181,7 +5209,6 @@ static void pgraph_method(NV2AState *d,
(clear_color & 0xFF) / 255.0f, /* blue */
((clear_color >> 24) & 0xFF) / 255.0f);/* alpha */
}
pgraph_update_surface(d, true, write_color, write_zeta);
glEnable(GL_SCISSOR_TEST);
@ -5195,9 +5222,17 @@ static void pgraph_method(NV2AState *d,
unsigned int ymax = GET_MASK(pg->regs[NV_PGRAPH_CLEARRECTY],
NV_PGRAPH_CLEARRECTY_YMAX);
unsigned int scissor_x = xmin;
unsigned int scissor_y = pg->surface_shape.clip_height-ymax;
unsigned int scissor_width = xmax-xmin+1;
unsigned int scissor_height = ymax-ymin+1;
pgraph_apply_anti_aliasing_factor(pg, &scissor_x, &scissor_y);
pgraph_apply_anti_aliasing_factor(pg, &scissor_width, &scissor_height);
/* FIXME: Should this really be inverted instead of ymin? */
glScissor(xmin, pg->surface_shape.clip_height-ymax,
xmax-xmin+1, ymax-ymin+1);
glScissor(scissor_x, scissor_y, scissor_width, scissor_height);
NV2A_DPRINTF("------------------CLEAR 0x%x %d,%d - %d,%d %x---------------\n",
parameter, xmin, ymin, xmax, ymax, d->pgraph.regs[NV_PGRAPH_COLORCLEARVALUE]);