comparison: src/mesh.c
src/mesh.c
- changeset 116
- bfb2a7d62047
- parent 115
- e5f8c99b0987
equal
deleted
inserted
replaced
| 115:e5f8c99b0987 | 116:bfb2a7d62047 |
|---|---|
| 73 void asc_mesh_destroy(AscMesh *mesh) { | 73 void asc_mesh_destroy(AscMesh *mesh) { |
| 74 asc_mesh_free_buffers(mesh, 1); | 74 asc_mesh_free_buffers(mesh, 1); |
| 75 free(mesh->vtx_data); | 75 free(mesh->vtx_data); |
| 76 } | 76 } |
| 77 | 77 |
| 78 void asc_mesh_plane_2d(AscMesh *mesh) { | 78 void asc_mesh_init_plane_2d(AscMesh *mesh, struct asc_mesh_init_plane_2d_args args) { |
| 79 if (mesh->vbo == 0) { | 79 if (mesh->vbo == 0) { |
| 80 asc_mesh_allocate_buffers(mesh, 1); | 80 asc_mesh_allocate_buffers(mesh, 1); |
| 81 } | 81 } |
| 82 | |
| 83 // free any previous data | |
| 82 free(mesh->vtx_data); | 84 free(mesh->vtx_data); |
| 85 | |
| 86 // default values | |
| 87 if (args.size.x == 0.0f) args.size.x = 1.0f; | |
| 88 if (args.size.y == 0.0f) args.size.y = 1.0f; | |
| 89 if (args.uv_scale.x == 0.0f) args.uv_scale.x = 1.0f; | |
| 90 if (args.uv_scale.y == 0.0f) args.uv_scale.y = 1.0f; | |
| 91 | |
| 83 asc_dprintf("Create plane in VBO %u and VAO %u", mesh->vbo, mesh->vao); | 92 asc_dprintf("Create plane in VBO %u and VAO %u", mesh->vbo, mesh->vao); |
| 84 mesh->vtx_count = 4; | 93 mesh->vtx_count = 4; |
| 85 AscMeshVertex2d data[4] = { | 94 AscMeshVertex2d data[4] = { |
| 86 { | 95 { |
| 87 .pos = {{0.0f, 0.0f}}, | 96 .pos = {{0.0f, 0.0f}}, |
| 88 .uv = {{0.0f, 0.0f}}, | 97 .uv = {{args.uv_offset.x, args.uv_offset.y}}, |
| 89 } , // bottom left | 98 } , // bottom left |
| 90 { | 99 { |
| 91 .pos = {{0.0f, 1.0f}}, | 100 .pos = {{0.0f, args.size.y}}, |
| 92 .uv = {{0.0f, 1.0f}}, | 101 .uv = {{args.uv_offset.x, args.uv_offset.y + args.uv_scale.y}}, |
| 93 }, // top left | 102 }, // top left |
| 94 { | 103 { |
| 95 .pos = {{1.0f, 0.0f}}, | 104 .pos = {{args.size.x, 0.0f}}, |
| 96 .uv = {{1.0f, 0.0f}}, | 105 .uv = {{args.uv_offset.x + args.uv_scale.x, args.uv_offset.y}}, |
| 97 }, // bottom right | 106 }, // bottom right |
| 98 { | 107 { |
| 99 .pos = {{1.0f, 1.0f}}, | 108 .pos = {{args.size.x, args.size.y}}, |
| 100 .uv = {{1.0f, 1.0f}}, | 109 .uv = {{args.uv_offset.x + args.uv_scale.x, args.uv_offset.y + args.uv_scale.y}}, |
| 101 } // top right | 110 } // top right |
| 102 }; | 111 }; |
| 103 mesh->vtx_data = malloc(sizeof(data)); | 112 mesh->vtx_data = malloc(sizeof(data)); |
| 104 memcpy(mesh->vtx_data, data, sizeof(data)); | 113 memcpy(mesh->vtx_data, data, sizeof(data)); |
| 105 glBindBuffer(GL_ARRAY_BUFFER, mesh->vbo); | 114 glBindBuffer(GL_ARRAY_BUFFER, mesh->vbo); |
| 106 glBufferData(GL_ARRAY_BUFFER, sizeof(data), mesh->vtx_data, GL_STATIC_DRAW); | 115 glBufferData(GL_ARRAY_BUFFER, sizeof(data), mesh->vtx_data, GL_STATIC_DRAW); |
| 116 // TODO: this should not be repeated for every adjustment - but it will be moved to the batch renderer anyway | |
| 107 glBindVertexArray(mesh->vao); | 117 glBindVertexArray(mesh->vao); |
| 108 glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, sizeof(AscMeshVertex2d), (void*)offsetof(AscMeshVertex2d, pos)); | 118 glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, sizeof(AscMeshVertex2d), (void*)offsetof(AscMeshVertex2d, pos)); |
| 109 glEnableVertexAttribArray(0); | 119 glEnableVertexAttribArray(0); |
| 110 glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, sizeof(AscMeshVertex2d), (void*)offsetof(AscMeshVertex2d, uv)); | 120 glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, sizeof(AscMeshVertex2d), (void*)offsetof(AscMeshVertex2d, uv)); |
| 111 glEnableVertexAttribArray(1); | 121 glEnableVertexAttribArray(1); |
