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Makes ScanTarget a little more communicative and orthogonal.

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This commit is contained in:
Thomas Harte
2018-11-10 19:52:57 -05:00
parent 491817d85c
commit 6d277fecd5
13 changed files with 76 additions and 51 deletions
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Outputs/OpenGL/ScanTarget.cpp
+5 -3
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@@ -56,12 +56,14 @@ ScanTarget::ScanTarget() {
// write straight into it.
glGenTextures(1, &write_area_texture_name_);
glGenVertexArrays(1, &vertex_array_);
}
ScanTarget::~ScanTarget() {
// Release scan space.
glDeleteBuffers(1, &scan_buffer_name_);
glDeleteTextures(1, &write_area_texture_name_);
glDeleteVertexArrays(1, &vertex_array_);
}
void ScanTarget::set_modals(Modals modals) {
@@ -81,7 +83,7 @@ void ScanTarget::set_modals(Modals modals) {
}
}
Outputs::Display::ScanTarget::Scan *ScanTarget::get_scan() {
Outputs::Display::ScanTarget::Scan *ScanTarget::begin_scan() {
if(allocation_has_failed_) return nullptr;
const auto result = &scan_buffer_[write_pointers_.scan_buffer];
@@ -104,7 +106,7 @@ Outputs::Display::ScanTarget::Scan *ScanTarget::get_scan() {
return static_cast<Outputs::Display::ScanTarget::Scan *>(result);
}
uint8_t *ScanTarget::allocate_write_area(size_t required_length, size_t required_alignment) {
uint8_t *ScanTarget::begin_data(size_t required_length, size_t required_alignment) {
if(allocation_has_failed_) return nullptr;
// Determine where the proposed write area would start and end.
@@ -143,7 +145,7 @@ uint8_t *ScanTarget::allocate_write_area(size_t required_length, size_t required
// write_pointers_.write_area points to the first pixel the client is expected to draw to.
}
void ScanTarget::reduce_previous_allocation_to(size_t actual_length) {
void ScanTarget::end_data(size_t actual_length) {
if(allocation_has_failed_) return;
// The write area was allocated in the knowledge that there's sufficient