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virgl: Support v2 caps struct (v2) 

This struct allows us to report:
- accurate max point size/line width.
- accurate texel and texture gather offsets
- vertex/geometry limits.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Stéphane Marchesin 2018-02-09 17:21:59 -08:00 committed by Dave Airlie
parent 10457712ed
commit 5e4a2b394e
3 changed files with 82 additions and 13 deletions
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28
src/gallium/drivers/virgl/virgl_hw.h
View File

@ -232,6 +232,11 @@ struct virgl_caps_bool_set1 {
unsigned poly_stipple:1; /* not in GL 3.1 core profile */
unsigned mirror_clamp:1;
unsigned texture_query_lod:1;
unsigned has_fp64:1;
unsigned has_tessellation_shaders:1;
unsigned has_indirect_draw:1;
unsigned has_sample_shading:1;
unsigned has_cull:1;
};
/* endless expansion capabilites - current gallium has 252 formats */
@ -259,9 +264,32 @@ struct virgl_caps_v1 {
uint32_t max_texture_gather_components;
};
struct virgl_caps_v2 {
struct virgl_caps_v1 v1;
float min_aliased_point_size;
float max_aliased_point_size;
float min_smooth_point_size;
float max_smooth_point_size;
float min_aliased_line_width;
float max_aliased_line_width;
float min_smooth_line_width;
float max_smooth_line_width;
float max_texture_lod_bias;
uint32_t max_geom_output_vertices;
uint32_t max_geom_total_output_components;
uint32_t max_vertex_outputs;
uint32_t max_vertex_attribs;
uint32_t max_shader_patch_varyings;
int32_t min_texel_offset;
int32_t max_texel_offset;
int32_t min_texture_gather_offset;
int32_t max_texture_gather_offset;
};
union virgl_caps {
uint32_t max_version;
struct virgl_caps_v1 v1;
struct virgl_caps_v2 v2;
};
enum virgl_errors {

29
src/gallium/drivers/virgl/virgl_screen.c
View File

@ -113,11 +113,13 @@ virgl_get_param(struct pipe_screen *screen, enum pipe_cap param)
case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
return vscreen->caps.caps.v1.max_texture_array_layers;
case PIPE_CAP_MIN_TEXEL_OFFSET:
return vscreen->caps.caps.v2.min_texel_offset;
case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
return -8;
return vscreen->caps.caps.v2.min_texture_gather_offset;
case PIPE_CAP_MAX_TEXEL_OFFSET:
return vscreen->caps.caps.v2.max_texel_offset;
case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
return 7;
return vscreen->caps.caps.v2.max_texture_gather_offset;
case PIPE_CAP_CONDITIONAL_RENDER:
return vscreen->caps.caps.v1.bset.conditional_render;
case PIPE_CAP_TEXTURE_BARRIER:
@ -182,9 +184,9 @@ virgl_get_param(struct pipe_screen *screen, enum pipe_cap param)
case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
return 0;
case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
return 256;
return vscreen->caps.caps.v2.max_geom_output_vertices;
case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
return 16384;
return vscreen->caps.caps.v2.max_geom_total_output_components;
case PIPE_CAP_TEXTURE_QUERY_LOD:
return vscreen->caps.caps.v1.bset.texture_query_lod;
case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
@ -310,11 +312,13 @@ virgl_get_shader_param(struct pipe_screen *screen,
return 1;
case PIPE_SHADER_CAP_MAX_INPUTS:
if (vscreen->caps.caps.v1.glsl_level < 150)
return 16;
return vscreen->caps.caps.v2.max_vertex_attribs;
return (shader == PIPE_SHADER_VERTEX ||
shader == PIPE_SHADER_GEOMETRY) ? 16 : 32;
shader == PIPE_SHADER_GEOMETRY) ? vscreen->caps.caps.v2.max_vertex_attribs : 32;
case PIPE_SHADER_CAP_MAX_OUTPUTS:
return 32;
if (shader == PIPE_SHADER_FRAGMENT)
return vscreen->caps.caps.v1.max_render_targets;
return vscreen->caps.caps.v2.max_vertex_outputs;
// case PIPE_SHADER_CAP_MAX_CONSTS:
// return 4096;
case PIPE_SHADER_CAP_MAX_TEMPS:
@ -350,19 +354,20 @@ virgl_get_shader_param(struct pipe_screen *screen,
static float
virgl_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
{
struct virgl_screen *vscreen = virgl_screen(screen);
switch (param) {
case PIPE_CAPF_MAX_LINE_WIDTH:
/* fall-through */
return vscreen->caps.caps.v2.max_aliased_line_width;
case PIPE_CAPF_MAX_LINE_WIDTH_AA:
return 255.0; /* arbitrary */
return vscreen->caps.caps.v2.max_smooth_line_width;
case PIPE_CAPF_MAX_POINT_WIDTH:
/* fall-through */
return vscreen->caps.caps.v2.max_aliased_point_size;
case PIPE_CAPF_MAX_POINT_WIDTH_AA:
return 255.0; /* arbitrary */
return vscreen->caps.caps.v2.max_smooth_point_size;
case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
return 16.0;
case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
return 16.0; /* arbitrary */
return vscreen->caps.caps.v2.max_texture_lod_bias;
case PIPE_CAPF_GUARD_BAND_LEFT:
case PIPE_CAPF_GUARD_BAND_TOP:
case PIPE_CAPF_GUARD_BAND_RIGHT:

38
src/gallium/winsys/virgl/drm/virgl_drm_winsys.c
View File

@ -704,13 +704,49 @@ static int virgl_drm_get_caps(struct virgl_winsys *vws,
{
struct virgl_drm_winsys *vdws = virgl_drm_winsys(vws);
struct drm_virtgpu_get_caps args;
int ret;
bool fill_v2 = false;
memset(&args, 0, sizeof(args));
args.cap_set_id = 1;
args.addr = (unsigned long)&caps->caps;
args.size = sizeof(union virgl_caps);
return drmIoctl(vdws->fd, DRM_IOCTL_VIRTGPU_GET_CAPS, &args);
ret = drmIoctl(vdws->fd, DRM_IOCTL_VIRTGPU_GET_CAPS, &args);
if (ret == -1 && errno == EINVAL) {
/* Fallback to v1 */
args.size = sizeof(struct virgl_caps_v1);
ret = drmIoctl(vdws->fd, DRM_IOCTL_VIRTGPU_GET_CAPS, &args);
if (ret == -1)
return ret;
fill_v2 = true;
}
if (caps->caps.max_version == 1)
fill_v2 = true;
if (fill_v2) {
caps->caps.v2.min_aliased_point_size = 0.f;
caps->caps.v2.max_aliased_point_size = 255.f;
caps->caps.v2.min_smooth_point_size = 0.f;
caps->caps.v2.max_smooth_point_size = 255.f;
caps->caps.v2.min_aliased_line_width = 0.f;
caps->caps.v2.max_aliased_line_width = 255.f;
caps->caps.v2.min_smooth_line_width = 0.f;
caps->caps.v2.max_smooth_line_width = 255.f;
caps->caps.v2.max_texture_lod_bias = 16.0f;
caps->caps.v2.max_geom_output_vertices = 256;
caps->caps.v2.max_geom_total_output_components = 16384;
caps->caps.v2.max_vertex_outputs = 32;
caps->caps.v2.max_vertex_attribs = 16;
caps->caps.v2.max_shader_patch_varyings = 0;
caps->caps.v2.min_texel_offset = -8;
caps->caps.v2.max_texel_offset = 7;
caps->caps.v2.min_texture_gather_offset = -8;
caps->caps.v2.max_texture_gather_offset = 7;
}
return ret;
}
#define PTR_TO_UINT(x) ((unsigned)((intptr_t)(x)))