gallium: Add PIPE_CAP_DEMOTE_TO_HELPER_INVOCATION
To enable EXT_demote_to_helper_invocation: This extension adds a "demote" keyword that is similar to "discard" but only suppresses subsequent writes and outputs to the framebuffer, and does not terminate the execution of the invocation. For the remainder of the execution, the invocation is "demoted" to act like a helper invocation. Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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@ -380,6 +380,9 @@ u_pipe_screen_get_param_defaults(struct pipe_screen *pscreen,
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case PIPE_CAP_GL_SPIRV_VARIABLE_POINTERS:
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return 0;
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case PIPE_CAP_DEMOTE_TO_HELPER_INVOCATION:
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return 0;
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case PIPE_CAP_DMABUF:
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#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_BSD)
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return 1;
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@ -557,6 +557,7 @@ The integer capabilities:
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efficient manner.
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* ``PIPE_CAP_GL_SPIRV``: True if the driver supports ARB_gl_spirv extension.
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* ``PIPE_CAP_GL_SPIRV_VARIABLE_POINTERS``: True if the driver supports Variable Pointers in SPIR-V shaders.
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* ``PIPE_CAP_DEMOTE_TO_HELPER_INVOCATION``: True if driver supports demote keyword in GLSL programs.
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.. _pipe_capf:
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@ -901,6 +901,7 @@ enum pipe_cap
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PIPE_CAP_PREFER_IMM_ARRAYS_AS_CONSTBUF,
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PIPE_CAP_GL_SPIRV,
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PIPE_CAP_GL_SPIRV_VARIABLE_POINTERS,
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PIPE_CAP_DEMOTE_TO_HELPER_INVOCATION,
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};
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/**
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@ -749,6 +749,7 @@ void st_init_extensions(struct pipe_screen *screen,
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{ o(ARB_fragment_shader_interlock), PIPE_CAP_FRAGMENT_SHADER_INTERLOCK },
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{ o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
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{ o(EXT_demote_to_helper_invocation), PIPE_CAP_DEMOTE_TO_HELPER_INVOCATION },
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{ o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
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{ o(EXT_disjoint_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
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{ o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
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