#include <stdint.h>
#include <stdbool.h>
-#include <panfrost-misc.h>
-
-enum mali_job_type {
- JOB_NOT_STARTED = 0,
- JOB_TYPE_NULL = 1,
- JOB_TYPE_WRITE_VALUE = 2,
- JOB_TYPE_CACHE_FLUSH = 3,
- JOB_TYPE_COMPUTE = 4,
- JOB_TYPE_VERTEX = 5,
- JOB_TYPE_GEOMETRY = 6,
- JOB_TYPE_TILER = 7,
- JOB_TYPE_FUSED = 8,
- JOB_TYPE_FRAGMENT = 9,
-};
+#include <inttypes.h>
-enum mali_draw_mode {
- MALI_DRAW_NONE = 0x0,
- MALI_POINTS = 0x1,
- MALI_LINES = 0x2,
- MALI_LINE_STRIP = 0x4,
- MALI_LINE_LOOP = 0x6,
- MALI_TRIANGLES = 0x8,
- MALI_TRIANGLE_STRIP = 0xA,
- MALI_TRIANGLE_FAN = 0xC,
- MALI_POLYGON = 0xD,
- MALI_QUADS = 0xE,
- MALI_QUAD_STRIP = 0xF,
-
- /* All other modes invalid */
-};
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+typedef uint64_t u64;
+typedef uint64_t mali_ptr;
/* Applies to tiler_gl_enables */
#define MALI_CULL_FACE_FRONT (1 << 6)
#define MALI_CULL_FACE_BACK (1 << 7)
-/* Used in stencil and depth tests */
-
-enum mali_func {
- MALI_FUNC_NEVER = 0,
- MALI_FUNC_LESS = 1,
- MALI_FUNC_EQUAL = 2,
- MALI_FUNC_LEQUAL = 3,
- MALI_FUNC_GREATER = 4,
- MALI_FUNC_NOTEQUAL = 5,
- MALI_FUNC_GEQUAL = 6,
- MALI_FUNC_ALWAYS = 7
-};
-
/* Flags apply to unknown2_3? */
#define MALI_HAS_MSAA (1 << 0)
+
+/* Execute fragment shader per-sample if set (e.g. to implement gl_SampleID
+ * reads) */
+#define MALI_PER_SAMPLE (1 << 2)
#define MALI_CAN_DISCARD (1 << 5)
/* Applies on SFBD systems, specifying that programmable blending is in use */
#define MALI_DEPTH_WRITEMASK (1 << 11)
+#define MALI_DEPTH_CLIP_NEAR (1 << 12)
+#define MALI_DEPTH_CLIP_FAR (1 << 13)
+
/* Next flags to unknown2_4 */
#define MALI_STENCIL_TEST (1 << 0)
-/* What?! */
-#define MALI_SAMPLE_ALPHA_TO_COVERAGE_NO_BLEND_SHADER (1 << 1)
+#define MALI_ALPHA_TO_COVERAGE (1 << 1)
+#define MALI_SFBD_ENABLE (1 << 4)
+#define MALI_SFBD_SRGB (1 << 8)
#define MALI_NO_DITHER (1 << 9)
#define MALI_DEPTH_RANGE_A (1 << 12)
#define MALI_DEPTH_RANGE_B (1 << 13)
#define MALI_NO_MSAA (1 << 14)
-/* Stencil test state is all encoded in a single u32, just with a lot of
- * enums... */
-
-enum mali_stencil_op {
- MALI_STENCIL_KEEP = 0,
- MALI_STENCIL_REPLACE = 1,
- MALI_STENCIL_ZERO = 2,
- MALI_STENCIL_INVERT = 3,
- MALI_STENCIL_INCR_WRAP = 4,
- MALI_STENCIL_DECR_WRAP = 5,
- MALI_STENCIL_INCR = 6,
- MALI_STENCIL_DECR = 7
-};
-
-struct mali_stencil_test {
- unsigned ref : 8;
- unsigned mask : 8;
- enum mali_func func : 3;
- enum mali_stencil_op sfail : 3;
- enum mali_stencil_op dpfail : 3;
- enum mali_stencil_op dppass : 3;
- unsigned zero : 4;
-} __attribute__((packed));
-
#define MALI_MASK_R (1 << 0)
#define MALI_MASK_G (1 << 1)
#define MALI_MASK_B (1 << 2)
unsigned complement_dominant : 1;
} __attribute__((packed));
-struct mali_blend_equation {
- /* Of type mali_blend_mode */
- unsigned rgb_mode : 12;
- unsigned alpha_mode : 12;
-
- unsigned zero1 : 4;
-
- /* Corresponds to MALI_MASK_* above and glColorMask arguments */
-
- unsigned color_mask : 4;
-} __attribute__((packed));
-
-/* Used with channel swizzling */
-enum mali_channel {
- MALI_CHANNEL_RED = 0,
- MALI_CHANNEL_GREEN = 1,
- MALI_CHANNEL_BLUE = 2,
- MALI_CHANNEL_ALPHA = 3,
- MALI_CHANNEL_ZERO = 4,
- MALI_CHANNEL_ONE = 5,
- MALI_CHANNEL_RESERVED_0 = 6,
- MALI_CHANNEL_RESERVED_1 = 7,
-};
-
-struct mali_channel_swizzle {
- enum mali_channel r : 3;
- enum mali_channel g : 3;
- enum mali_channel b : 3;
- enum mali_channel a : 3;
-} __attribute__((packed));
-
/* Compressed per-pixel formats. Each of these formats expands to one to four
* floating-point or integer numbers, as defined by the OpenGL specification.
* There are various places in OpenGL where the user can specify a compressed
* for Bifrost framebuffer output.
*/
#define MALI_FORMAT_SPECIAL2 (7 << 5)
+#define MALI_EXTRACT_TYPE(fmt) ((fmt) & 0xe0)
/* If the high 3 bits are 3 to 6 these two bits say how many components
* there are.
*/
#define MALI_NR_CHANNELS(n) ((n - 1) << 3)
+#define MALI_EXTRACT_CHANNELS(fmt) ((((fmt) >> 3) & 3) + 1)
/* If the high 3 bits are 3 to 6, then the low 3 bits say how big each
* component is, except the special MALI_CHANNEL_FLOAT which overrides what the
* MALI_FORMAT_UNORM, it means a 32-bit float.
*/
#define MALI_CHANNEL_FLOAT 7
-
-enum mali_format {
- MALI_ETC2_RGB8 = MALI_FORMAT_COMPRESSED | 0x1,
- MALI_ETC2_R11_UNORM = MALI_FORMAT_COMPRESSED | 0x2,
- MALI_ETC2_RGBA8 = MALI_FORMAT_COMPRESSED | 0x3,
- MALI_ETC2_RG11_UNORM = MALI_FORMAT_COMPRESSED | 0x4,
- MALI_ETC2_R11_SNORM = MALI_FORMAT_COMPRESSED | 0x11,
- MALI_ETC2_RG11_SNORM = MALI_FORMAT_COMPRESSED | 0x12,
- MALI_ETC2_RGB8A1 = MALI_FORMAT_COMPRESSED | 0x13,
- MALI_ASTC_SRGB_SUPP = MALI_FORMAT_COMPRESSED | 0x16,
- MALI_ASTC_HDR_SUPP = MALI_FORMAT_COMPRESSED | 0x17,
-
- MALI_RGB565 = MALI_FORMAT_SPECIAL | 0x0,
- MALI_RGB5_X1_UNORM = MALI_FORMAT_SPECIAL | 0x1,
- MALI_RGB5_A1_UNORM = MALI_FORMAT_SPECIAL | 0x2,
- MALI_RGB10_A2_UNORM = MALI_FORMAT_SPECIAL | 0x3,
- MALI_RGB10_A2_SNORM = MALI_FORMAT_SPECIAL | 0x5,
- MALI_RGB10_A2UI = MALI_FORMAT_SPECIAL | 0x7,
- MALI_RGB10_A2I = MALI_FORMAT_SPECIAL | 0x9,
-
- /* YUV formats */
- MALI_NV12 = MALI_FORMAT_SPECIAL | 0xc,
-
- MALI_Z32_UNORM = MALI_FORMAT_SPECIAL | 0xD,
- MALI_R32_FIXED = MALI_FORMAT_SPECIAL | 0x11,
- MALI_RG32_FIXED = MALI_FORMAT_SPECIAL | 0x12,
- MALI_RGB32_FIXED = MALI_FORMAT_SPECIAL | 0x13,
- MALI_RGBA32_FIXED = MALI_FORMAT_SPECIAL | 0x14,
- MALI_R11F_G11F_B10F = MALI_FORMAT_SPECIAL | 0x19,
- MALI_R9F_G9F_B9F_E5F = MALI_FORMAT_SPECIAL | 0x1b,
- /* Only used for varyings, to indicate the transformed gl_Position */
- MALI_VARYING_POS = MALI_FORMAT_SPECIAL | 0x1e,
- /* Only used for varyings, to indicate that the write should be
- * discarded.
- */
- MALI_VARYING_DISCARD = MALI_FORMAT_SPECIAL | 0x1f,
-
- MALI_R8_SNORM = MALI_FORMAT_SNORM | MALI_NR_CHANNELS(1) | MALI_CHANNEL_8,
- MALI_R16_SNORM = MALI_FORMAT_SNORM | MALI_NR_CHANNELS(1) | MALI_CHANNEL_16,
- MALI_R32_SNORM = MALI_FORMAT_SNORM | MALI_NR_CHANNELS(1) | MALI_CHANNEL_32,
- MALI_RG8_SNORM = MALI_FORMAT_SNORM | MALI_NR_CHANNELS(2) | MALI_CHANNEL_8,
- MALI_RG16_SNORM = MALI_FORMAT_SNORM | MALI_NR_CHANNELS(2) | MALI_CHANNEL_16,
- MALI_RG32_SNORM = MALI_FORMAT_SNORM | MALI_NR_CHANNELS(2) | MALI_CHANNEL_32,
- MALI_RGB8_SNORM = MALI_FORMAT_SNORM | MALI_NR_CHANNELS(3) | MALI_CHANNEL_8,
- MALI_RGB16_SNORM = MALI_FORMAT_SNORM | MALI_NR_CHANNELS(3) | MALI_CHANNEL_16,
- MALI_RGB32_SNORM = MALI_FORMAT_SNORM | MALI_NR_CHANNELS(3) | MALI_CHANNEL_32,
- MALI_RGBA8_SNORM = MALI_FORMAT_SNORM | MALI_NR_CHANNELS(4) | MALI_CHANNEL_8,
- MALI_RGBA16_SNORM = MALI_FORMAT_SNORM | MALI_NR_CHANNELS(4) | MALI_CHANNEL_16,
- MALI_RGBA32_SNORM = MALI_FORMAT_SNORM | MALI_NR_CHANNELS(4) | MALI_CHANNEL_32,
-
- MALI_R8UI = MALI_FORMAT_UINT | MALI_NR_CHANNELS(1) | MALI_CHANNEL_8,
- MALI_R16UI = MALI_FORMAT_UINT | MALI_NR_CHANNELS(1) | MALI_CHANNEL_16,
- MALI_R32UI = MALI_FORMAT_UINT | MALI_NR_CHANNELS(1) | MALI_CHANNEL_32,
- MALI_RG8UI = MALI_FORMAT_UINT | MALI_NR_CHANNELS(2) | MALI_CHANNEL_8,
- MALI_RG16UI = MALI_FORMAT_UINT | MALI_NR_CHANNELS(2) | MALI_CHANNEL_16,
- MALI_RG32UI = MALI_FORMAT_UINT | MALI_NR_CHANNELS(2) | MALI_CHANNEL_32,
- MALI_RGB8UI = MALI_FORMAT_UINT | MALI_NR_CHANNELS(3) | MALI_CHANNEL_8,
- MALI_RGB16UI = MALI_FORMAT_UINT | MALI_NR_CHANNELS(3) | MALI_CHANNEL_16,
- MALI_RGB32UI = MALI_FORMAT_UINT | MALI_NR_CHANNELS(3) | MALI_CHANNEL_32,
- MALI_RGBA8UI = MALI_FORMAT_UINT | MALI_NR_CHANNELS(4) | MALI_CHANNEL_8,
- MALI_RGBA16UI = MALI_FORMAT_UINT | MALI_NR_CHANNELS(4) | MALI_CHANNEL_16,
- MALI_RGBA32UI = MALI_FORMAT_UINT | MALI_NR_CHANNELS(4) | MALI_CHANNEL_32,
-
- MALI_R8_UNORM = MALI_FORMAT_UNORM | MALI_NR_CHANNELS(1) | MALI_CHANNEL_8,
- MALI_R16_UNORM = MALI_FORMAT_UNORM | MALI_NR_CHANNELS(1) | MALI_CHANNEL_16,
- MALI_R32_UNORM = MALI_FORMAT_UNORM | MALI_NR_CHANNELS(1) | MALI_CHANNEL_32,
- MALI_R32F = MALI_FORMAT_UNORM | MALI_NR_CHANNELS(1) | MALI_CHANNEL_FLOAT,
- MALI_RG8_UNORM = MALI_FORMAT_UNORM | MALI_NR_CHANNELS(2) | MALI_CHANNEL_8,
- MALI_RG16_UNORM = MALI_FORMAT_UNORM | MALI_NR_CHANNELS(2) | MALI_CHANNEL_16,
- MALI_RG32_UNORM = MALI_FORMAT_UNORM | MALI_NR_CHANNELS(2) | MALI_CHANNEL_32,
- MALI_RG32F = MALI_FORMAT_UNORM | MALI_NR_CHANNELS(2) | MALI_CHANNEL_FLOAT,
- MALI_RGB8_UNORM = MALI_FORMAT_UNORM | MALI_NR_CHANNELS(3) | MALI_CHANNEL_8,
- MALI_RGB16_UNORM = MALI_FORMAT_UNORM | MALI_NR_CHANNELS(3) | MALI_CHANNEL_16,
- MALI_RGB32_UNORM = MALI_FORMAT_UNORM | MALI_NR_CHANNELS(3) | MALI_CHANNEL_32,
- MALI_RGB32F = MALI_FORMAT_UNORM | MALI_NR_CHANNELS(3) | MALI_CHANNEL_FLOAT,
- MALI_RGBA4_UNORM = MALI_FORMAT_UNORM | MALI_NR_CHANNELS(4) | MALI_CHANNEL_4,
- MALI_RGBA8_UNORM = MALI_FORMAT_UNORM | MALI_NR_CHANNELS(4) | MALI_CHANNEL_8,
- MALI_RGBA16_UNORM = MALI_FORMAT_UNORM | MALI_NR_CHANNELS(4) | MALI_CHANNEL_16,
- MALI_RGBA32_UNORM = MALI_FORMAT_UNORM | MALI_NR_CHANNELS(4) | MALI_CHANNEL_32,
- MALI_RGBA32F = MALI_FORMAT_UNORM | MALI_NR_CHANNELS(4) | MALI_CHANNEL_FLOAT,
-
- MALI_R8I = MALI_FORMAT_SINT | MALI_NR_CHANNELS(1) | MALI_CHANNEL_8,
- MALI_R16I = MALI_FORMAT_SINT | MALI_NR_CHANNELS(1) | MALI_CHANNEL_16,
- MALI_R32I = MALI_FORMAT_SINT | MALI_NR_CHANNELS(1) | MALI_CHANNEL_32,
- MALI_R16F = MALI_FORMAT_SINT | MALI_NR_CHANNELS(1) | MALI_CHANNEL_FLOAT,
- MALI_RG8I = MALI_FORMAT_SINT | MALI_NR_CHANNELS(2) | MALI_CHANNEL_8,
- MALI_RG16I = MALI_FORMAT_SINT | MALI_NR_CHANNELS(2) | MALI_CHANNEL_16,
- MALI_RG32I = MALI_FORMAT_SINT | MALI_NR_CHANNELS(2) | MALI_CHANNEL_32,
- MALI_RG16F = MALI_FORMAT_SINT | MALI_NR_CHANNELS(2) | MALI_CHANNEL_FLOAT,
- MALI_RGB8I = MALI_FORMAT_SINT | MALI_NR_CHANNELS(3) | MALI_CHANNEL_8,
- MALI_RGB16I = MALI_FORMAT_SINT | MALI_NR_CHANNELS(3) | MALI_CHANNEL_16,
- MALI_RGB32I = MALI_FORMAT_SINT | MALI_NR_CHANNELS(3) | MALI_CHANNEL_32,
- MALI_RGB16F = MALI_FORMAT_SINT | MALI_NR_CHANNELS(3) | MALI_CHANNEL_FLOAT,
- MALI_RGBA8I = MALI_FORMAT_SINT | MALI_NR_CHANNELS(4) | MALI_CHANNEL_8,
- MALI_RGBA16I = MALI_FORMAT_SINT | MALI_NR_CHANNELS(4) | MALI_CHANNEL_16,
- MALI_RGBA32I = MALI_FORMAT_SINT | MALI_NR_CHANNELS(4) | MALI_CHANNEL_32,
- MALI_RGBA16F = MALI_FORMAT_SINT | MALI_NR_CHANNELS(4) | MALI_CHANNEL_FLOAT,
-
- MALI_RGBA4 = MALI_FORMAT_SPECIAL2 | 0x8,
- MALI_RGBA8_2 = MALI_FORMAT_SPECIAL2 | 0xd,
- MALI_RGB10_A2_2 = MALI_FORMAT_SPECIAL2 | 0xe,
-};
-
-
-/* Alpha coverage is encoded as 4-bits (from a clampf), with inversion
- * literally performing a bitwise invert. This function produces slightly wrong
- * results and I'm not sure why; some rounding issue I suppose... */
-
-#define MALI_ALPHA_COVERAGE(clampf) ((uint16_t) (int) (clampf * 15.0f))
-#define MALI_GET_ALPHA_COVERAGE(nibble) ((float) nibble / 15.0f)
-
-/* Applies to midgard1.flags_lo */
-
-/* Should be set when the fragment shader updates the depth value. */
-#define MALI_WRITES_Z (1 << 4)
-
-/* Should the hardware perform early-Z testing? Normally should be set
- * for performance reasons. Clear if you use: discard,
- * alpha-to-coverage... * It's also possible this disables
- * forward-pixel kill; we're not quite sure which bit is which yet.
- * TODO: How does this interact with blending?*/
-
-#define MALI_EARLY_Z (1 << 6)
-
-/* Should the hardware calculate derivatives (via helper invocations)? Set in a
- * fragment shader that uses texturing or derivative functions */
-
-#define MALI_HELPER_INVOCATIONS (1 << 7)
-
-/* Flags denoting the fragment shader's use of tilebuffer readback. If the
- * shader might read any part of the tilebuffer, set MALI_READS_TILEBUFFER. If
- * it might read depth/stencil in particular, also set MALI_READS_ZS */
-
-#define MALI_READS_ZS (1 << 8)
-#define MALI_READS_TILEBUFFER (1 << 12)
-
-/* Applies to midgard1.flags_hi */
-
-/* Should be set when the fragment shader updates the stencil value. */
-#define MALI_WRITES_S (1 << 2)
+#define MALI_EXTRACT_BITS(fmt) (fmt & 0x7)
/* The raw Midgard blend payload can either be an equation or a shader
* address, depending on the context */
mali_ptr shader;
struct {
- struct mali_blend_equation equation;
+ struct mali_blend_equation_packed equation;
float constant;
};
};
-/* We need to load the tilebuffer to blend (i.e. the destination factor is not
- * ZERO) */
-
-#define MALI_BLEND_LOAD_TIB (0x1)
-
-/* A blend shader is used to blend this render target */
-#define MALI_BLEND_MRT_SHADER (0x2)
-
-/* On MRT Midgard systems (using an MFBD), each render target gets its own
- * blend descriptor */
-
-#define MALI_BLEND_SRGB (0x400)
-
-/* Dithering is specified here for MFBD, otherwise NO_DITHER for SFBD */
-#define MALI_BLEND_NO_DITHER (0x800)
-
struct midgard_blend_rt {
- /* Flags base value of 0x200 to enable the render target.
- * OR with 0x1 for blending (anything other than REPLACE).
- * OR with 0x2 for programmable blending
- * OR with MALI_BLEND_SRGB for implicit sRGB
- */
-
- u64 flags;
+ struct mali_blend_flags_packed flags;
+ u32 zero;
union midgard_blend blend;
} __attribute__((packed));
/* On Bifrost systems (all MRT), each render target gets one of these
* descriptors */
+enum bifrost_shader_type {
+ BIFROST_BLEND_F16 = 0,
+ BIFROST_BLEND_F32 = 1,
+ BIFROST_BLEND_I32 = 2,
+ BIFROST_BLEND_U32 = 3,
+ BIFROST_BLEND_I16 = 4,
+ BIFROST_BLEND_U16 = 5,
+};
+
+#define BIFROST_MAX_RENDER_TARGET_COUNT 8
+
struct bifrost_blend_rt {
/* This is likely an analogue of the flags on
* midgard_blend_rt */
* constant_hi = int(f / 255)
* constant_lo = 65535*f - (65535/255) * constant_hi
*/
-
u16 constant;
- struct mali_blend_equation equation;
+ struct mali_blend_equation_packed equation;
+
/*
* - 0x19 normally
* - 0x3 when this slot is unused (everything else is 0 except the index)
* - 0x11 when this is the fourth slot (and it's used)
-+ * - 0 when there is a blend shader
+ * - 0 when there is a blend shader
*/
u16 unk2;
+
/* increments from 0 to 3 */
u16 index;
- union {
- struct {
- /* So far, I've only seen:
- * - R001 for 1-component formats
- * - RG01 for 2-component formats
- * - RGB1 for 3-component formats
- * - RGBA for 4-component formats
- */
- u32 swizzle : 12;
- enum mali_format format : 8;
-
- /* Type of the shader output variable. Note, this can
- * be different from the format.
- *
- * 0: f16 (mediump float)
- * 1: f32 (highp float)
- * 2: i32 (highp int)
- * 3: u32 (highp uint)
- * 4: i16 (mediump int)
- * 5: u16 (mediump uint)
- */
- u32 shader_type : 3;
- u32 zero : 9;
- };
-
- /* Only the low 32 bits of the blend shader are stored, the
- * high 32 bits are implicitly the same as the original shader.
- * According to the kernel driver, the program counter for
- * shaders is actually only 24 bits, so shaders cannot cross
- * the 2^24-byte boundary, and neither can the blend shader.
- * The blob handles this by allocating a 2^24 byte pool for
- * shaders, and making sure that any blend shaders are stored
- * in the same pool as the original shader. The kernel will
- * make sure this allocation is aligned to 2^24 bytes.
- */
- u32 shader;
- };
+ union {
+ struct {
+ /* So far, I've only seen:
+ * - R001 for 1-component formats
+ * - RG01 for 2-component formats
+ * - RGB1 for 3-component formats
+ * - RGBA for 4-component formats
+ */
+ u32 swizzle : 12;
+ enum mali_format format : 8;
+
+ /* Type of the shader output variable. Note, this can
+ * be different from the format.
+ * enum bifrost_shader_type
+ */
+ u32 zero1 : 4;
+ u32 shader_type : 3;
+ u32 zero2 : 5;
+ };
+
+ /* Only the low 32 bits of the blend shader are stored, the
+ * high 32 bits are implicitly the same as the original shader.
+ * According to the kernel driver, the program counter for
+ * shaders is actually only 24 bits, so shaders cannot cross
+ * the 2^24-byte boundary, and neither can the blend shader.
+ * The blob handles this by allocating a 2^24 byte pool for
+ * shaders, and making sure that any blend shaders are stored
+ * in the same pool as the original shader. The kernel will
+ * make sure this allocation is aligned to 2^24 bytes.
+ */
+ u32 shader;
+ };
} __attribute__((packed));
/* Descriptor for the shader. Following this is at least one, up to four blend
u16 varying_count;
union {
- struct {
- u32 uniform_buffer_count : 4;
- u32 unk1 : 28; // = 0x800000 for vertex, 0x958020 for tiler
- } bifrost1;
- struct {
- unsigned uniform_buffer_count : 4;
- unsigned flags_lo : 12;
-
- /* vec4 units */
- unsigned work_count : 5;
- unsigned uniform_count : 5;
- unsigned flags_hi : 6;
- } midgard1;
+ struct mali_bifrost_properties_packed bifrost_props;
+ struct mali_midgard_properties_packed midgard_props;
};
/* Same as glPolygoOffset() arguments */
u32 unknown2_2;
- u16 alpha_coverage;
+ /* Generated from SAMPLE_COVERAGE_VALUE and SAMPLE_COVERAGE_INVERT. See
+ * 13.8.3 ("Multisample Fragment Operations") in the OpenGL ES 3.2
+ * specification. Only matters when multisampling is enabled. */
+ u16 coverage_mask;
+
u16 unknown2_3;
u8 stencil_mask_front;
u8 stencil_mask_back;
u16 unknown2_4;
- struct mali_stencil_test stencil_front;
- struct mali_stencil_test stencil_back;
+ struct mali_stencil_packed stencil_front;
+ struct mali_stencil_packed stencil_back;
union {
- struct {
- u32 unk3 : 7;
- /* On Bifrost, some system values are preloaded in
- * registers R55-R62 by the thread dispatcher prior to
- * the start of shader execution. This is a bitfield
- * with one entry for each register saying which
- * registers need to be preloaded. Right now, the known
- * values are:
- *
- * Vertex/compute:
- * - R55 : gl_LocalInvocationID.xy
- * - R56 : gl_LocalInvocationID.z + unknown in high 16 bits
- * - R57 : gl_WorkGroupID.x
- * - R58 : gl_WorkGroupID.y
- * - R59 : gl_WorkGroupID.z
- * - R60 : gl_GlobalInvocationID.x
- * - R61 : gl_GlobalInvocationID.y/gl_VertexID (without base)
- * - R62 : gl_GlobalInvocationID.z/gl_InstanceID (without base)
- *
- * Fragment:
- * - R55 : unknown, never seen (but the bit for this is
- * always set?)
- * - R56 : unknown (bit always unset)
- * - R57 : gl_PrimitiveID
- * - R58 : gl_FrontFacing in low bit, potentially other stuff
- * - R59 : u16 fragment coordinates (used to compute
- * gl_FragCoord.xy, together with sample positions)
- * - R60 : gl_SampleMask (used in epilog, so pretty
- * much always used, but the bit is always 0 -- is
- * this just always pushed?)
- * - R61 : gl_SampleMaskIn and gl_SampleID, used by
- * varying interpolation.
- * - R62 : unknown (bit always unset).
- *
- * Later GPUs (starting with Mali-G52?) support
- * preloading float varyings into r0-r7. This is
- * indicated by setting 0x40. There is no distinction
- * here between 1 varying and 2.
- */
- u32 preload_regs : 8;
- /* In units of 8 bytes or 64 bits, since the
- * uniform/const port loads 64 bits at a time.
- */
- u32 uniform_count : 7;
- u32 unk4 : 10; // = 2
- } bifrost2;
+ struct mali_preload_packed bifrost_preload;
struct {
u32 unknown2_7;
} midgard2;
u64 next_job;
} __attribute__((packed));
-/* These concern exception_status */
-
-/* Access type causing a fault, paralleling AS_FAULTSTATUS_* entries in the
- * kernel */
-
-enum mali_exception_access {
- /* Atomic in the kernel for MMU, but that doesn't make sense for a job
- * fault so it's just unused */
- MALI_EXCEPTION_ACCESS_NONE = 0,
-
- MALI_EXCEPTION_ACCESS_EXECUTE = 1,
- MALI_EXCEPTION_ACCESS_READ = 2,
- MALI_EXCEPTION_ACCESS_WRITE = 3
-};
-
/* Details about write_value from panfrost igt tests which use it as a generic
* dword write primitive */
* 3. If e <= 2^shift, then we need to use the round-down algorithm. Set
* magic_divisor = m - 1 and extra_flags = 1.
* 4. Otherwise, set magic_divisor = m and extra_flags = 0.
- *
- * Unrelated to instancing/actual attributes, images (the OpenCL kind) are
- * implemented as special attributes, denoted by MALI_ATTR_IMAGE. For images,
- * let shift=extra_flags=0. Stride is set to the image format's bytes-per-pixel
- * (*NOT the row stride*). Size is set to the size of the image itself.
- *
- * Special internal attribtues and varyings (gl_VertexID, gl_FrontFacing, etc)
- * use particular fixed addresses with modified structures.
*/
-enum mali_attr_mode {
- MALI_ATTR_UNUSED = 0,
- MALI_ATTR_LINEAR = 1,
- MALI_ATTR_POT_DIVIDE = 2,
- MALI_ATTR_MODULO = 3,
- MALI_ATTR_NPOT_DIVIDE = 4,
- MALI_ATTR_IMAGE = 5,
-};
-
-/* Pseudo-address for gl_VertexID, gl_FragCoord, gl_FrontFacing */
-
-#define MALI_ATTR_VERTEXID (0x22)
-#define MALI_ATTR_INSTANCEID (0x24)
-#define MALI_VARYING_FRAG_COORD (0x25)
-#define MALI_VARYING_FRONT_FACING (0x26)
-
-/* This magic "pseudo-address" is used as `elements` to implement
- * gl_PointCoord. When read from a fragment shader, it generates a point
- * coordinate per the OpenGL ES 2.0 specification. Flipped coordinate spaces
- * require an affine transformation in the shader. */
-
-#define MALI_VARYING_POINT_COORD (0x61)
-
-/* Used for comparison to check if an address is special. Mostly a guess, but
- * it doesn't really matter. */
-
-#define MALI_RECORD_SPECIAL (0x100)
-
-union mali_attr {
- /* This is used for actual attributes. */
- struct {
- /* The bottom 3 bits are the mode */
- mali_ptr elements : 64 - 8;
- u32 shift : 5;
- u32 extra_flags : 3;
- u32 stride;
- u32 size;
- };
- /* The entry after an NPOT_DIVIDE entry has this format. It stores
- * extra information that wouldn't fit in a normal entry.
- */
- struct {
- u32 unk; /* = 0x20 */
- u32 magic_divisor;
- u32 zero;
- /* This is the original, GL-level divisor. */
- u32 divisor;
- };
-} __attribute__((packed));
-
-struct mali_attr_meta {
- /* Vertex buffer index */
- u8 index;
-
- unsigned unknown1 : 2;
- unsigned swizzle : 12;
- enum mali_format format : 8;
-
- /* Always observed to be zero at the moment */
- unsigned unknown3 : 2;
-
- /* When packing multiple attributes in a buffer, offset addresses by
- * this value. Obscurely, this is signed. */
- int32_t src_offset;
-} __attribute__((packed));
-
#define FBD_MASK (~0x3f)
/* MFBD, rather than SFBD */
/* ORed into an MFBD address to specify the fbx section is included */
#define MALI_MFBD_TAG_EXTRA (0x2)
-/* Uniform buffer objects are 64-bit fields divided as:
- *
- * u64 size : 10;
- * mali_ptr ptr : 64 - 10;
- *
- * The size is actually the size minus 1 (MALI_POSITIVE), in units of 16 bytes.
- * This gives a maximum of 2^14 bytes, which just so happens to be the GL
- * minimum-maximum for GL_MAX_UNIFORM_BLOCK_SIZE.
- *
- * The pointer is missing the bottom 2 bits and top 8 bits. The top 8 bits
- * should be 0 for userspace pointers, according to
- * https://lwn.net/Articles/718895/. By reusing these bits, we can make each
- * entry in the table only 64 bits.
- */
-
-#define MALI_MAKE_UBO(elements, ptr) \
- (MALI_POSITIVE((elements)) | (((ptr) >> 2) << 10))
-
/* On Bifrost, these fields are the same between the vertex and tiler payloads.
* They also seem to be the same between Bifrost and Midgard. They're shared in
* fused payloads.
u64 pointer;
};
-struct bifrost_vertex_only {
- u32 unk2; /* =0x2 */
-
- u32 zero0;
-
- u64 zero1;
-} __attribute__((packed));
-
struct bifrost_tiler_heap_meta {
u32 zero;
u32 heap_size;
mali_ptr tiler_heap_end;
/* hierarchy weights? but they're still 0 after the job has run... */
- u32 zeros[12];
+ u32 zeros[10];
+ u32 unk1;
+ u32 unk7e007e;
} __attribute__((packed));
struct bifrost_tiler_meta {
- u64 zero0;
- u16 hierarchy_mask;
+ u32 tiler_heap_next_start; /* To be written by the GPU */
+ u32 used_hierarchy_mask; /* To be written by the GPU */
+ u16 hierarchy_mask; /* Five values observed: 0xa, 0x14, 0x28, 0x50, 0xa0 */
u16 flags;
u16 width;
u16 height;
- u64 zero1;
+ u64 zero0;
mali_ptr tiler_heap_meta;
/* TODO what is this used for? */
u64 zeros[20];
mali_ptr tiler_meta;
u64 zero1, zero2, zero3, zero4, zero5, zero6;
-
- u32 gl_enables;
- u32 zero7;
- u64 zero8;
} __attribute__((packed));
struct mali_vertex_tiler_postfix {
+ u16 gl_enables; // 0x6 on Midgard, 0x2 on Bifrost
+
+ /* Both zero for non-instanced draws. For instanced draws, a
+ * decomposition of padded_num_vertices. See the comments about the
+ * corresponding fields in mali_attr for context. */
+
+ unsigned instance_shift : 5;
+ unsigned instance_odd : 3;
+
+ u8 zero4;
+
+ /* Offset for first vertex in buffer */
+ u32 offset_start;
+
+ u64 zero5;
+
/* Zero for vertex jobs. Pointer to the position (gl_Position) varying
* output from the vertex shader for tiler jobs.
*/
*/
u64 uniform_buffers;
- /* This is a pointer to an array of pointers to the texture
+ /* On Bifrost, this is a pointer to an array of bifrost_texture_descriptor.
+ * On Midgard, this is a pointer to an array of pointers to the texture
* descriptors, number of pointers bounded by number of textures. The
* indirection is needed to accomodate varying numbers and sizes of
* texture descriptors */
- u64 texture_trampoline;
+ u64 textures;
/* For OpenGL, from what I've seen, this is intimately connected to
* texture_meta. cwabbott says this is not the case under Vulkan, hence
struct midgard_payload_vertex_tiler {
struct mali_vertex_tiler_prefix prefix;
-
- u16 gl_enables; // 0x5
-
- /* Both zero for non-instanced draws. For instanced draws, a
- * decomposition of padded_num_vertices. See the comments about the
- * corresponding fields in mali_attr for context. */
-
- unsigned instance_shift : 5;
- unsigned instance_odd : 3;
-
- u8 zero4;
-
- /* Offset for first vertex in buffer */
- u32 offset_start;
-
- u64 zero5;
-
struct mali_vertex_tiler_postfix postfix;
union midgard_primitive_size primitive_size;
struct bifrost_payload_vertex {
struct mali_vertex_tiler_prefix prefix;
- struct bifrost_vertex_only vertex;
struct mali_vertex_tiler_postfix postfix;
} __attribute__((packed));
struct bifrost_tiler_only tiler;
struct mali_vertex_tiler_postfix tiler_postfix;
u64 padding; /* zero */
- struct bifrost_vertex_only vertex;
struct mali_vertex_tiler_postfix vertex_postfix;
} __attribute__((packed));
#define MALI_POSITIVE(dim) (dim - 1)
-/* Used with wrapping. Unclear what top bit conveys */
-
-enum mali_wrap_mode {
- MALI_WRAP_REPEAT = 0x8 | 0x0,
- MALI_WRAP_CLAMP_TO_EDGE = 0x8 | 0x1,
- MALI_WRAP_CLAMP = 0x8 | 0x2,
- MALI_WRAP_CLAMP_TO_BORDER = 0x8 | 0x3,
- MALI_WRAP_MIRRORED_REPEAT = 0x8 | 0x4 | 0x0,
- MALI_WRAP_MIRRORED_CLAMP_TO_EDGE = 0x8 | 0x4 | 0x1,
- MALI_WRAP_MIRRORED_CLAMP = 0x8 | 0x4 | 0x2,
- MALI_WRAP_MIRRORED_CLAMP_TO_BORDER = 0x8 | 0x4 | 0x3,
-};
-
-/* Shared across both command stream and Midgard, and even with Bifrost */
-
-enum mali_texture_type {
- MALI_TEX_CUBE = 0x0,
- MALI_TEX_1D = 0x1,
- MALI_TEX_2D = 0x2,
- MALI_TEX_3D = 0x3
-};
-
/* 8192x8192 */
#define MAX_MIP_LEVELS (13)
/* For each pointer, there is an address and optionally also a stride */
#define MAX_ELEMENTS (2)
-/* It's not known why there are 4-bits allocated -- this enum is almost
- * certainly incomplete */
-
-enum mali_texture_layout {
- /* For a Z/S texture, this is linear */
- MALI_TEXTURE_TILED = 0x1,
-
- /* Z/S textures cannot be tiled */
- MALI_TEXTURE_LINEAR = 0x2,
-
- /* 16x16 sparse */
- MALI_TEXTURE_AFBC = 0xC
-};
-
-/* Corresponds to the type passed to glTexImage2D and so forth */
-
-struct mali_texture_format {
- unsigned swizzle : 12;
- enum mali_format format : 8;
-
- unsigned srgb : 1;
- unsigned unknown1 : 1;
-
- enum mali_texture_type type : 2;
- enum mali_texture_layout layout : 4;
-
- /* Always set */
- unsigned unknown2 : 1;
-
- /* Set to allow packing an explicit stride */
- unsigned manual_stride : 1;
-
- unsigned zero : 2;
-} __attribute__((packed));
-
-struct mali_texture_descriptor {
- uint16_t width;
- uint16_t height;
- uint16_t depth;
- uint16_t array_size;
-
- struct mali_texture_format format;
-
- uint16_t unknown3;
-
- /* One for non-mipmapped, zero for mipmapped */
- uint8_t unknown3A;
-
- /* Zero for non-mipmapped, (number of levels - 1) for mipmapped */
- uint8_t levels;
-
- /* Swizzling is a single 32-bit word, broken up here for convenience.
- * Here, swizzling refers to the ES 3.0 texture parameters for channel
- * level swizzling, not the internal pixel-level swizzling which is
- * below OpenGL's reach */
-
- unsigned swizzle : 12;
- unsigned swizzle_zero : 20;
-
- uint32_t unknown5;
- uint32_t unknown6;
- uint32_t unknown7;
-} __attribute__((packed));
-
-/* filter_mode */
-
-#define MALI_SAMP_MAG_NEAREST (1 << 0)
-#define MALI_SAMP_MIN_NEAREST (1 << 1)
-
-/* TODO: What do these bits mean individually? Only seen set together */
-
-#define MALI_SAMP_MIP_LINEAR_1 (1 << 3)
-#define MALI_SAMP_MIP_LINEAR_2 (1 << 4)
-
-/* Flag in filter_mode, corresponding to OpenCL's NORMALIZED_COORDS_TRUE
- * sampler_t flag. For typical OpenGL textures, this is always set. */
-
-#define MALI_SAMP_NORM_COORDS (1 << 5)
-
/* Used for lod encoding. Thanks @urjaman for pointing out these routines can
* be cleaned up a lot. */
return (int) (x * 256.0);
}
-struct mali_sampler_descriptor {
- uint16_t filter_mode;
-
- /* Fixed point, signed.
- * Upper 7 bits before the decimal point, although it caps [0-31].
- * Lower 8 bits after the decimal point: int(round(x * 256)) */
-
- int16_t lod_bias;
- int16_t min_lod;
- int16_t max_lod;
-
- /* All one word in reality, but packed a bit. Comparisons are flipped
- * from OpenGL. */
-
- enum mali_wrap_mode wrap_s : 4;
- enum mali_wrap_mode wrap_t : 4;
- enum mali_wrap_mode wrap_r : 4;
- enum mali_func compare_func : 3;
-
- /* No effect on 2D textures. For cubemaps, set for ES3 and clear for
- * ES2, controlling seamless cubemapping */
- unsigned seamless_cube_map : 1;
-
- unsigned zero : 16;
-
- uint32_t zero2;
- float border_color[4];
-} __attribute__((packed));
-
-/* viewport0/viewport1 form the arguments to glViewport. viewport1 is
- * modified by MALI_POSITIVE; viewport0 is as-is.
- */
-
-struct mali_viewport {
- /* XY clipping planes */
- float clip_minx;
- float clip_miny;
- float clip_maxx;
- float clip_maxy;
-
- /* Depth clipping planes */
- float clip_minz;
- float clip_maxz;
-
- u16 viewport0[2];
- u16 viewport1[2];
-} __attribute__((packed));
-
/* From presentations, 16x16 tiles externally. Use shift for fast computation
* of tile numbers. */
u32 weights[8];
};
-enum mali_block_format {
- MALI_BLOCK_TILED = 0x0,
- MALI_BLOCK_UNKNOWN = 0x1,
- MALI_BLOCK_LINEAR = 0x2,
- MALI_BLOCK_AFBC = 0x3,
-};
-
struct mali_sfbd_format {
/* 0x1 */
unsigned unk1 : 6;
/* More below this, maybe */
} __attribute__((packed));
-/* Format bits for the render target flags */
-#define MALI_MFBD_FORMAT_MSAA (1 << 1)
-#define MALI_MFBD_FORMAT_SRGB (1 << 2)
+#define MALI_MFBD_FORMAT_SRGB (1 << 0)
struct mali_rt_format {
unsigned unk1 : 32;
unsigned nr_channels : 2; /* MALI_POSITIVE */
- unsigned unk3 : 5;
+ unsigned unk3 : 4;
+ unsigned unk4 : 1;
enum mali_block_format block : 2;
- unsigned flags : 4;
+ enum mali_msaa msaa : 2;
+ unsigned flags : 2;
unsigned swizzle : 12;
unsigned no_preload : 1;
} __attribute__((packed));
+/* Flags for afbc.flags and ds_afbc.flags */
+
+#define MALI_AFBC_FLAGS 0x10009
+
+/* Lossless RGB and RGBA colorspace transform */
+#define MALI_AFBC_YTR (1 << 17)
+
struct mali_render_target {
struct mali_rt_format format;
mali_ptr metadata;
u32 stride; // stride in units of tiles
- u32 unk; // = 0x20000
+ u32 flags; // = 0x20000
} afbc;
mali_ptr framebuffer;
u32 zero2 : 4;
- u32 framebuffer_stride : 28; // in units of bytes
- u32 zero3;
+ u32 framebuffer_stride : 28; // in units of bytes, row to next
+ u32 layer_stride; /* For multisample rendering */
u32 clear_color_1; // RGBA8888 from glClear, actually used by hardware
u32 clear_color_2; // always equal, but unclear function?
*/
/* flags_hi */
-#define MALI_EXTRA_PRESENT (0x10)
+#define MALI_EXTRA_PRESENT (0x1)
/* flags_lo */
#define MALI_EXTRA_ZS (0x4)
unsigned flags_lo : 4;
enum mali_block_format zs_block : 2;
- unsigned flags_hi : 26;
+
+ /* Number of samples in Z/S attachment, MALI_POSITIVE. So zero for
+ * 1-sample (non-MSAA), 0x3 for MSAA 4x, etc */
+ unsigned zs_samples : 4;
+ unsigned flags_hi : 22;
union {
/* Note: AFBC is only allowed for 24/8 combined depth/stencil. */
struct {
mali_ptr depth_stencil_afbc_metadata;
u32 depth_stencil_afbc_stride; // in units of tiles
- u32 zero1;
+ u32 flags;
mali_ptr depth_stencil;
mali_ptr depth;
u32 depth_stride_zero : 4;
u32 depth_stride : 28;
- u32 zero1;
+ u32 depth_layer_stride;
mali_ptr stencil;
u32 stencil_stride_zero : 4;
u32 stencil_stride : 28;
- u32 zero2;
+ u32 stencil_layer_stride;
} ds_linear;
};
- u64 zero3, zero4;
+ u32 clear_color_1;
+ u32 clear_color_2;
+ u64 zero3;
} __attribute__((packed));
/* Flags for mfbd_flags */
u32 zero3;
u16 width2, height2;
u32 unk1 : 19; // = 0x01000
- u32 rt_count_1 : 2; // off-by-one (use MALI_POSITIVE)
- u32 unk2 : 3; // = 0
+ u32 rt_count_1 : 3; // off-by-one (use MALI_POSITIVE)
+ u32 unk2 : 2; // = 0
u32 rt_count_2 : 3; // no off-by-one
u32 zero4 : 5;
/* 0x30 */
u32 mfbd_flags : 24; // = 0x100
float clear_depth;
- struct midgard_tiler_descriptor tiler;
+ union {
+ struct midgard_tiler_descriptor tiler;
+ struct {
+ mali_ptr tiler_meta;
+ u32 zeros[16];
+ };
+ };
/* optional: struct mali_framebuffer_extra extra */
/* struct mali_render_target rts[] */
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