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authorKonstantin Käfer <mail@kkaefer.com>2014-07-16 18:53:56 -0700
committerKonstantin Käfer <mail@kkaefer.com>2014-07-16 18:53:56 -0700
commit4ea281c750c5afcc68f2832bb42d98a1cbce6735 (patch)
tree60bc7d3ccba2c54859e2e023997cc027cc67aea7 /include/llmr/geometry/buffer.hpp
parentc1a64dc5fa73b54cc5de77629781dfc74302a1e7 (diff)
downloadqtlocation-mapboxgl-4ea281c750c5afcc68f2832bb42d98a1cbce6735.tar.gz
rename llmr => mbgl
Diffstat (limited to 'include/llmr/geometry/buffer.hpp')
-rw-r--r--include/llmr/geometry/buffer.hpp114
1 files changed, 0 insertions, 114 deletions
diff --git a/include/llmr/geometry/buffer.hpp b/include/llmr/geometry/buffer.hpp
deleted file mode 100644
index 607f902bf1..0000000000
--- a/include/llmr/geometry/buffer.hpp
+++ /dev/null
@@ -1,114 +0,0 @@
-#ifndef LLMR_GEOMETRY_BUFFER
-#define LLMR_GEOMETRY_BUFFER
-
-#include <llmr/platform/gl.hpp>
-#include <llmr/util/noncopyable.hpp>
-
-#include <cstdlib>
-#include <cassert>
-#include <stdexcept>
-
-namespace llmr {
-
-template <
- size_t item_size,
- int bufferType = GL_ARRAY_BUFFER,
- size_t defaultLength = 8192,
- bool retainAfterUpload = false
->
-class Buffer : private util::noncopyable {
-public:
- ~Buffer() {
- cleanup();
- if (buffer != 0) {
- glDeleteBuffers(1, &buffer);
- buffer = 0;
- }
- }
-
- // Returns the number of elements in this buffer. This is not the number of
- // bytes, but rather the number of coordinates with associated information.
- inline size_t index() const {
- return pos / itemSize;
- }
-
- inline bool empty() const {
- return pos == 0;
- }
-
- // Transfers this buffer to the GPU and binds the buffer to the GL context.
- void bind(bool force = false) {
- if (buffer == 0) {
- glGenBuffers(1, &buffer);
- force = true;
- }
- glBindBuffer(bufferType, buffer);
- if (force) {
- if (array == nullptr) {
- throw std::runtime_error("Buffer was already deleted or doesn't contain elements");
- }
-
- glBufferData(bufferType, pos, array, GL_STATIC_DRAW);
- if (!retainAfterUpload) {
- cleanup();
- }
- }
- }
-
- void cleanup() {
- if (array) {
- free(array);
- array = nullptr;
- }
- }
-
-protected:
- // increase the buffer size by at least /required/ bytes.
- inline void *addElement() {
- if (buffer != 0) {
- throw std::runtime_error("Can't add elements after buffer was bound to GPU");
- }
- if (length < pos + itemSize) {
- while (length < pos + itemSize) length += defaultLength;
- array = realloc(array, length);
- if (array == nullptr) {
- throw std::runtime_error("Buffer reallocation failed¯");
- }
- }
- pos += itemSize;
- return static_cast<char *>(array) + (pos - itemSize);
- }
-
- // Get a pointer to the item at a given index.
- inline void *getElement(size_t index) {
- if (array == nullptr) {
- throw std::runtime_error("Buffer was already deleted or doesn't contain elements");
- }
-
- if (index * itemSize >= pos) {
- throw new std::runtime_error("Can't get element after array bounds");
- } else {
- return static_cast<char *>(array) + (index * itemSize);
- }
- }
-
-public:
- static const size_t itemSize = item_size;
-
-private:
- // CPU buffer
- void *array = nullptr;
-
- // Byte position where we are writing.
- size_t pos = 0;
-
- // Number of bytes that are valid in this buffer.
- size_t length = 0;
-
- // GL buffer ID
- uint32_t buffer = 0;
-};
-
-}
-
-#endif