1 /* 2 * Copyright 2016 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * on the rights to use, copy, modify, merge, publish, distribute, sub 8 * license, and/or sell copies of the Software, and to permit persons to whom 9 * the Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 21 * USE OR OTHER DEALINGS IN THE SOFTWARE. 22 */ 23 24 #ifndef ST_PBO_H 25 #define ST_PBO_H 26 27 struct gl_pixelstore_attrib; 28 29 struct st_context; 30 31 struct st_pbo_addresses { 32 int xoffset; 33 int yoffset; 34 unsigned width; 35 unsigned height; 36 unsigned depth; 37 38 unsigned bytes_per_pixel; 39 40 /* Everything below is filled in by st_pbo_from_pixelstore */ 41 unsigned pixels_per_row; 42 unsigned image_height; 43 44 /* Everything below is filled in by st_pbo_setup_buffer */ 45 46 /* Buffer and view. */ 47 struct pipe_resource *buffer; /* non-owning pointer */ 48 unsigned first_element; 49 unsigned last_element; 50 51 /* Constant buffer for the fragment shader. */ 52 struct { 53 int32_t xoffset; 54 int32_t yoffset; 55 int32_t stride; 56 int32_t image_size; 57 int32_t layer_offset; 58 } constants; 59 }; 60 61 /* Conversion to apply in the fragment shader. */ 62 enum st_pbo_conversion { 63 ST_PBO_CONVERT_FLOAT = 0, 64 ST_PBO_CONVERT_UINT, 65 ST_PBO_CONVERT_SINT, 66 ST_PBO_CONVERT_UINT_TO_SINT, 67 ST_PBO_CONVERT_SINT_TO_UINT, 68 69 ST_NUM_PBO_CONVERSIONS 70 }; 71 72 const struct glsl_type * 73 st_pbo_sampler_type_for_target(enum pipe_texture_target target, 74 enum st_pbo_conversion conv); 75 bool 76 st_pbo_addresses_setup(struct st_context *st, 77 struct pipe_resource *buf, intptr_t buf_offset, 78 struct st_pbo_addresses *addr); 79 80 bool 81 st_pbo_addresses_pixelstore(struct st_context *st, 82 GLenum gl_target, bool skip_images, 83 const struct gl_pixelstore_attrib *store, 84 const void *pixels, 85 struct st_pbo_addresses *addr); 86 87 void 88 st_pbo_addresses_invert_y(struct st_pbo_addresses *addr, 89 unsigned viewport_height); 90 91 bool 92 st_pbo_draw(struct st_context *st, const struct st_pbo_addresses *addr, 93 unsigned surface_width, unsigned surface_height); 94 95 void * 96 st_pbo_create_vs(struct st_context *st); 97 98 void * 99 st_pbo_create_gs(struct st_context *st); 100 101 void * 102 st_pbo_get_upload_fs(struct st_context *st, 103 enum pipe_format src_format, 104 enum pipe_format dst_format, 105 bool need_layer); 106 107 void * 108 st_pbo_get_download_fs(struct st_context *st, enum pipe_texture_target target, 109 enum pipe_format src_format, 110 enum pipe_format dst_format, 111 bool need_layer); 112 113 bool 114 st_GetTexSubImage_shader(struct gl_context * ctx, 115 GLint xoffset, GLint yoffset, GLint zoffset, 116 GLsizei width, GLsizei height, GLint depth, 117 GLenum format, GLenum type, void * pixels, 118 struct gl_texture_image *texImage); 119 120 enum pipe_format 121 st_pbo_get_dst_format(struct gl_context *ctx, enum pipe_texture_target target, 122 enum pipe_format src_format, bool is_compressed, 123 GLenum format, GLenum type, unsigned bind); 124 enum pipe_format 125 st_pbo_get_src_format(struct pipe_screen *screen, enum pipe_format src_format, struct pipe_resource *src); 126 127 extern void 128 st_init_pbo_helpers(struct st_context *st); 129 130 extern void 131 st_destroy_pbo_helpers(struct st_context *st); 132 133 #endif /* ST_PBO_H */ 134