--- /dev/null
+/*
+ * Copyright © 2018 Broadcom
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "pipe/p_screen.h"
+#include "util/u_screen.h"
+
+/**
+ * Helper to use from a pipe_screen->get_param() implementation to return
+ * default values for unsupported PIPE_CAPs.
+ *
+ * Call this function from your pipe_screen->get_param() implementation's
+ * default case, so that implementors of new pipe caps don't need to
+ */
+int
+u_pipe_screen_get_param_defaults(struct pipe_screen *pscreen,
+ enum pipe_cap param)
+{
+ /* Let's keep these sorted by position in p_defines.h. */
+ switch (param) {
+ case PIPE_CAP_NPOT_TEXTURES:
+ case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
+ case PIPE_CAP_ANISOTROPIC_FILTER:
+ case PIPE_CAP_POINT_SPRITE:
+ return 0;
+
+ case PIPE_CAP_MAX_RENDER_TARGETS:
+ return 1;
+
+ case PIPE_CAP_OCCLUSION_QUERY:
+ case PIPE_CAP_QUERY_TIME_ELAPSED:
+ case PIPE_CAP_TEXTURE_SWIZZLE:
+ return 0;
+
+ case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
+ case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
+ case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
+ unreachable("driver must implement these.");
+
+ case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
+ case PIPE_CAP_BLEND_EQUATION_SEPARATE:
+ case PIPE_CAP_SM3:
+ case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS: /* enables EXT_transform_feedback */
+ case PIPE_CAP_PRIMITIVE_RESTART:
+ case PIPE_CAP_INDEP_BLEND_ENABLE:
+ case PIPE_CAP_INDEP_BLEND_FUNC:
+ return 0;
+
+ case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
+ unreachable("driver must implement these.");
+
+ case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
+ case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
+ case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
+ case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
+ case PIPE_CAP_DEPTH_CLIP_DISABLE:
+ case PIPE_CAP_SHADER_STENCIL_EXPORT:
+ case PIPE_CAP_TGSI_INSTANCEID:
+ case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
+ case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
+ case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
+ case PIPE_CAP_SEAMLESS_CUBE_MAP:
+ case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
+ return 0;
+
+ case PIPE_CAP_MIN_TEXEL_OFFSET:
+ /* GL 3.x minimum value. */
+ return -8;
+ case PIPE_CAP_MAX_TEXEL_OFFSET:
+ return 7;
+
+ case PIPE_CAP_CONDITIONAL_RENDER:
+ case PIPE_CAP_TEXTURE_BARRIER:
+ return 0;
+
+ case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
+ /* GL_EXT_transform_feedback minimum value. */
+ return 4;
+ case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
+ return 64;
+
+ case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
+ case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
+ case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
+ case PIPE_CAP_VERTEX_COLOR_CLAMPED:
+ return 0;
+
+ case PIPE_CAP_GLSL_FEATURE_LEVEL:
+ case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
+ /* Minimum GLSL level implemented by gallium drivers. */
+ return 120;
+
+ case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
+ case PIPE_CAP_USER_VERTEX_BUFFERS:
+ case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
+ case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
+ case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
+ case PIPE_CAP_COMPUTE:
+ return 0;
+
+ case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
+ /* GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT default value. */
+ return 1;
+
+ case PIPE_CAP_START_INSTANCE:
+ case PIPE_CAP_QUERY_TIMESTAMP:
+ case PIPE_CAP_TEXTURE_MULTISAMPLE:
+ return 0;
+
+ case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
+ /* GL_ARB_map_buffer_alignment minimum value. All drivers expose the
+ * extension.
+ */
+ return 64;
+
+ case PIPE_CAP_CUBE_MAP_ARRAY:
+ case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
+ return 0;
+
+ case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
+ /* GL_EXT_texture_buffer minimum value. */
+ return 256;
+
+ case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
+ case PIPE_CAP_TGSI_TEXCOORD:
+ return 0;
+
+ case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+ return 1;
+
+ case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
+ case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
+ return 0;
+
+ case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
+ /* GL_EXT_texture_buffer minimum value. */
+ return 65536;
+
+ case PIPE_CAP_MAX_VIEWPORTS:
+ return 1;
+
+ case PIPE_CAP_ENDIANNESS:
+ return PIPE_ENDIAN_LITTLE;
+
+ case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
+ case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
+ case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
+ case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
+ case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS: /* Enables ARB_texture_gather */
+ case PIPE_CAP_TEXTURE_GATHER_SM5:
+ case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
+ case PIPE_CAP_FAKE_SW_MSAA:
+ case PIPE_CAP_TEXTURE_QUERY_LOD:
+ return 0;
+
+ case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
+ return -8;
+ case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
+ return 7;
+
+ case PIPE_CAP_SAMPLE_SHADING:
+ case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
+ case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
+ case PIPE_CAP_MAX_VERTEX_STREAMS:
+ case PIPE_CAP_DRAW_INDIRECT:
+ case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
+ return 0;
+
+ case PIPE_CAP_VENDOR_ID:
+ case PIPE_CAP_DEVICE_ID:
+ return 0xffffffff;
+
+ case PIPE_CAP_ACCELERATED:
+ case PIPE_CAP_VIDEO_MEMORY:
+ case PIPE_CAP_UMA:
+ unreachable("driver must implement these.");
+
+ case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
+ return 0;
+
+ case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
+ /* GL minimum value */
+ return 2048;
+
+ case PIPE_CAP_SAMPLER_VIEW_TARGET:
+ case PIPE_CAP_CLIP_HALFZ:
+ case PIPE_CAP_VERTEXID_NOBASE:
+ case PIPE_CAP_POLYGON_OFFSET_CLAMP:
+ case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
+ case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
+ case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
+ case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
+ case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
+ case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
+ case PIPE_CAP_DEPTH_BOUNDS_TEST:
+ case PIPE_CAP_TGSI_TXQS:
+ case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
+ case PIPE_CAP_SHAREABLE_SHADERS:
+ case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
+ case PIPE_CAP_CLEAR_TEXTURE:
+ case PIPE_CAP_DRAW_PARAMETERS:
+ case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
+ case PIPE_CAP_MULTI_DRAW_INDIRECT:
+ case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
+ case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
+ case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
+ return 0;
+
+ case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
+ /* Enables GL_ARB_shader_storage_buffer_object */
+ return 0;
+
+ case PIPE_CAP_INVALIDATE_BUFFER:
+ case PIPE_CAP_GENERATE_MIPMAP:
+ case PIPE_CAP_STRING_MARKER:
+ case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
+ case PIPE_CAP_QUERY_BUFFER_OBJECT:
+ case PIPE_CAP_QUERY_MEMORY_INFO: /* Enables GL_ATI_meminfo */
+ return 0;
+
+ case PIPE_CAP_PCI_GROUP:
+ case PIPE_CAP_PCI_BUS:
+ case PIPE_CAP_PCI_DEVICE:
+ case PIPE_CAP_PCI_FUNCTION:
+ unreachable("driver must implement these.");
+
+ case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
+ case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
+ case PIPE_CAP_CULL_DISTANCE:
+ case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
+ case PIPE_CAP_TGSI_VOTE:
+ case PIPE_CAP_MAX_WINDOW_RECTANGLES: /* Enables EXT_window_rectangles */
+ case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
+ case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
+ case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
+ case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
+ case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
+ case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
+ case PIPE_CAP_NATIVE_FENCE_FD:
+ return 0;
+
+ case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
+ return 1;
+
+ case PIPE_CAP_TGSI_FS_FBFETCH:
+ case PIPE_CAP_TGSI_MUL_ZERO_WINS:
+ case PIPE_CAP_DOUBLES:
+ case PIPE_CAP_INT64:
+ case PIPE_CAP_INT64_DIVMOD:
+ case PIPE_CAP_TGSI_TEX_TXF_LZ:
+ case PIPE_CAP_TGSI_CLOCK:
+ case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
+ case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
+ case PIPE_CAP_TGSI_BALLOT:
+ case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
+ case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
+ return 0;
+
+ case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
+ /* Drivers generally support this, and it reduces GL overhead just to
+ * throw an error when buffers are mapped.
+ */
+ return 1;
+
+ case PIPE_CAP_POST_DEPTH_COVERAGE:
+ case PIPE_CAP_BINDLESS_TEXTURE:
+ case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
+ case PIPE_CAP_QUERY_SO_OVERFLOW:
+ case PIPE_CAP_MEMOBJ:
+ case PIPE_CAP_LOAD_CONSTBUF:
+ case PIPE_CAP_TGSI_ANY_REG_AS_ADDRESS:
+ case PIPE_CAP_TILE_RASTER_ORDER:
+ return 0;
+
+ case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
+ /* nonzero overrides defaults */
+ return 0;
+
+ case PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS:
+ case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
+ case PIPE_CAP_CONTEXT_PRIORITY_MASK:
+ case PIPE_CAP_FENCE_SIGNAL:
+ case PIPE_CAP_CONSTBUF0_FLAGS:
+ case PIPE_CAP_PACKED_UNIFORMS:
+ case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES:
+ case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES:
+ case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES:
+ case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES:
+ case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
+ case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
+ case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
+ return 0;
+
+ case PIPE_CAP_MAX_GS_INVOCATIONS:
+ return 32;
+
+ case PIPE_CAP_MAX_SHADER_BUFFER_SIZE:
+ return 1 << 27;
+
+ case PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE:
+ return 0;
+
+ default:
+ unreachable("bad PIPE_CAP_*");
+ }
+}
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