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glamor: add EXT_gpu_shader4 support 

This enables a number of the GLSL 1.30 paths on GPUs that have
EXT_gpu_shader4 but don't have GLSL 1.30 exposed.

(Intel gen4/5 mainly)

Reviewed-by: Adam Jackson <ajax@redhat.com>
This commit is contained in:
Dave Airlie 2021-07-01 06:48:55 +10:00
parent a2f5b917f5
commit a955286869
4 changed files with 19 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
glamor/glamor.c
View File

@ -772,6 +772,10 @@ glamor_init(ScreenPtr screen, unsigned int flags)
goto fail;
}
if (!glamor_priv->is_gles && glamor_priv->glsl_version == 120 &&
epoxy_has_gl_extension("GL_ARB_instanced_arrays"))
glamor_priv->use_gpu_shader4 = epoxy_has_gl_extension("GL_EXT_gpu_shader4");
glamor_priv->has_rw_pbo = FALSE;
if (!glamor_priv->is_gles)
glamor_priv->has_rw_pbo = TRUE;

1
glamor/glamor_priv.h
View File

@ -213,6 +213,7 @@ typedef struct glamor_screen_private {
Bool has_texture_swizzle;
Bool is_core_profile;
Bool can_copyplane;
Bool use_gpu_shader4;
int max_fbo_size;
struct glamor_format formats[33];

15
glamor/glamor_program.c
View File

@ -187,6 +187,7 @@ fs_location_vars(glamor_program_location locations)
static const char vs_template[] =
"%s" /* version */
"%s" /* exts */
"%s" /* defines */
"%s" /* prim vs_vars */
"%s" /* fill vs_vars */
@ -199,6 +200,7 @@ static const char vs_template[] =
static const char fs_template[] =
"%s" /* version */
"%s" /* exts */
GLAMOR_DEFAULT_PRECISION
"%s" /* defines */
"%s" /* prim fs_vars */
@ -262,6 +264,7 @@ glamor_build_program(ScreenPtr screen,
char *fs_prog_string;
GLint fs_prog, vs_prog;
Bool gpu_shader4 = FALSE;
if (!fill)
fill = &facet_null_fill;
@ -270,8 +273,14 @@ glamor_build_program(ScreenPtr screen,
flags |= fill->flags;
version = MAX(version, fill->version);
if (version > glamor_priv->glsl_version)
goto fail;
if (version > glamor_priv->glsl_version) {
if (version == 130 && !glamor_priv->use_gpu_shader4)
goto fail;
else {
version = 120;
gpu_shader4 = TRUE;
}
}
vs_vars = vs_location_vars(locations);
fs_vars = fs_location_vars(locations);
@ -291,6 +300,7 @@ glamor_build_program(ScreenPtr screen,
if (asprintf(&vs_prog_string,
vs_template,
str(version_string),
gpu_shader4 ? "#extension GL_EXT_gpu_shader4 : require\n" : "",
str(defines),
str(prim->vs_vars),
str(fill->vs_vars),
@ -302,6 +312,7 @@ glamor_build_program(ScreenPtr screen,
if (asprintf(&fs_prog_string,
fs_template,
str(version_string),
gpu_shader4 ? "#extension GL_EXT_gpu_shader4 : require\n#define texelFetch texelFetch2D\n#define uint unsigned int\n" : "",
str(defines),
str(prim->fs_vars),
str(fill->fs_vars),

2
glamor/glamor_utils.h
View File

@ -734,7 +734,7 @@ glamor_glDrawArrays_GL_QUADS(glamor_screen_private *glamor_priv, unsigned count)
static inline Bool
glamor_glsl_has_ints(glamor_screen_private *glamor_priv) {
return glamor_priv->glsl_version >= 130;
return glamor_priv->glsl_version >= 130 || glamor_priv->use_gpu_shader4;
}
#endif