mirror of https://github.com/mpv-player/mpv
85 lines
3.5 KiB
C
85 lines
3.5 KiB
C
#ifndef MPGL_FORMATS_H_
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#define MPGL_FORMATS_H_
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#include "common.h"
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#include "ra.h"
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struct gl_format {
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const char *name; // symbolic name for user interaction/debugging
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GLint internal_format; // glTexImage argument
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GLenum format; // glTexImage argument
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GLenum type; // e.g. GL_UNSIGNED_SHORT
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int flags; // F_* flags
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};
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enum {
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// --- gl_format.flags
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// Version flags. If at least 1 flag matches, the format entry is considered
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// supported on the current GL context.
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F_GL2 = 1 << 0, // GL2.1-only
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F_GL3 = 1 << 1, // GL3.0 or later
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F_ES2 = 1 << 2, // ES2-only
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F_ES3 = 1 << 3, // ES3.0 or later
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F_ES32 = 1 << 4, // ES3.2 or later
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F_EXT16 = 1 << 5, // ES with GL_EXT_texture_norm16
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F_EXTF16 = 1 << 6, // GL_EXT_color_buffer_half_float
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F_GL2F = 1 << 7, // GL2.1-only with texture_rg + texture_float + FBOs
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F_APPL = 1 << 8, // GL_APPLE_rgb_422
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// Feature flags. They are additional and signal presence of features.
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F_CR = 1 << 16, // color-renderable
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F_TF = 1 << 17, // texture-filterable with GL_LINEAR
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F_CF = F_CR | F_TF,
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F_F16 = 1 << 18, // uses half-floats (16 bit) internally, even though
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// the format is still GL_FLOAT (32 bit)
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// --- Other constants.
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MPGL_TYPE_UNORM = RA_CTYPE_UNORM, // normalized integer (fixed point) formats
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MPGL_TYPE_UINT = RA_CTYPE_UINT, // full integer formats
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MPGL_TYPE_FLOAT = RA_CTYPE_FLOAT, // float formats (both full and half)
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};
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extern const struct gl_format gl_formats[];
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int gl_format_feature_flags(GL *gl);
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const struct gl_format *gl_find_internal_format(GL *gl, GLint internal_format);
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const struct gl_format *gl_find_format(GL *gl, int type, int flags,
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int bytes_per_component, int n_components);
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const struct gl_format *gl_find_unorm_format(GL *gl, int bytes_per_component,
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int n_components);
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const struct gl_format *gl_find_uint_format(GL *gl, int bytes_per_component,
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int n_components);
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const struct gl_format *gl_find_float16_format(GL *gl, int n_components);
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int gl_format_type(const struct gl_format *format);
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bool gl_format_is_regular(const struct gl_format *format);
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GLenum gl_integer_format_to_base(GLenum format);
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bool gl_is_integer_format(GLenum format);
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int gl_component_size(GLenum type);
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int gl_format_components(GLenum format);
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int gl_bytes_per_pixel(GLenum format, GLenum type);
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struct gl_imgfmt_desc {
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int num_planes;
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const struct gl_format *planes[4];
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// Chroma pixel size (1x1 is 4:4:4)
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uint8_t chroma_w, chroma_h;
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// Component storage size in bits (possibly padded). For formats with
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// different sizes per component, this is arbitrary. For padded formats
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// like P010 or YUV420P10, padding is included.
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int component_bits;
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// Like mp_regular_imgfmt.component_pad.
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int component_pad;
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// For each texture and each texture output (rgba order) describe what
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// component it returns.
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// The values are like the values in mp_regular_imgfmt_plane.components[].
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// Access as components[plane_nr][component_index]. Set unused items to 0.
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// This pretends GL_RG is used instead of GL_LUMINANCE_ALPHA. The renderer
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// fixes this later.
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uint8_t components[4][4];
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};
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bool gl_get_imgfmt_desc(GL *gl, int imgfmt, struct gl_imgfmt_desc *out);
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#endif
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