mirror of https://github.com/adamdruppe/arsd.git
Merge pull request #414 from analogjupiter/pixmaprenderer
Add OpenGL 1.x PixmapRenderer implementation
This commit is contained in:
Adam D. Ruppe
GitHub
commit
fa20b68161
|
|
@ -1,6 +1,6 @@
|
|||
/+
|
||||
== pixmappresenter ==
|
||||
Copyright Elias Batek (0xEAB) 2023.
|
||||
Copyright Elias Batek (0xEAB) 2023 - 2024.
|
||||
Distributed under the Boost Software License, Version 1.0.
|
||||
+/
|
||||
/++
|
||||
|
|
@ -291,6 +291,7 @@ struct Pixmap {
|
|||
}
|
||||
}
|
||||
|
||||
// viewport math
|
||||
private @safe pure nothrow @nogc {
|
||||
|
||||
// keep aspect ratio (contain)
|
||||
|
|
@ -336,6 +337,72 @@ private @safe pure nothrow @nogc {
|
|||
}
|
||||
}
|
||||
|
||||
///
|
||||
struct Viewport {
|
||||
Size size; ///
|
||||
Point offset; ///
|
||||
}
|
||||
|
||||
/++
|
||||
Calls `glViewport` with the data from the provided [Viewport].
|
||||
+/
|
||||
void glViewportPMP(const ref Viewport vp) {
|
||||
glViewport(vp.offset.x, vp.offset.y, vp.size.width, vp.size.height);
|
||||
}
|
||||
|
||||
/++
|
||||
Calculates the dimensions and position of the viewport for the provided config.
|
||||
|
||||
$(TIP
|
||||
Primary use case for this is [PixmapRenderer] implementations.
|
||||
)
|
||||
+/
|
||||
Viewport calculateViewport(const ref PresenterConfig config) @safe pure nothrow @nogc {
|
||||
Size size;
|
||||
|
||||
final switch (config.renderer.scaling) {
|
||||
|
||||
case Scaling.none:
|
||||
size = config.renderer.resolution;
|
||||
break;
|
||||
|
||||
case Scaling.stretch:
|
||||
size = config.window.size;
|
||||
break;
|
||||
|
||||
case Scaling.contain:
|
||||
const float scaleF = karContainScalingFactorF(config.renderer.resolution, config.window.size);
|
||||
size = Size(
|
||||
typeCast!int(scaleF * config.renderer.resolution.width),
|
||||
typeCast!int(scaleF * config.renderer.resolution.height),
|
||||
);
|
||||
break;
|
||||
|
||||
case Scaling.integer:
|
||||
const int scaleI = karContainScalingFactorInt(config.renderer.resolution, config.window.size);
|
||||
size = (config.renderer.resolution * scaleI);
|
||||
break;
|
||||
|
||||
case Scaling.intHybrid:
|
||||
if (karContainNeedsDownscaling(config.renderer.resolution, config.window.size)) {
|
||||
goto case Scaling.contain;
|
||||
}
|
||||
goto case Scaling.integer;
|
||||
|
||||
case Scaling.cover:
|
||||
const float fillF = karCoverScalingFactorF(config.renderer.resolution, config.window.size);
|
||||
size = Size(
|
||||
typeCast!int(fillF * config.renderer.resolution.width),
|
||||
typeCast!int(fillF * config.renderer.resolution.height),
|
||||
);
|
||||
break;
|
||||
}
|
||||
|
||||
const Point offset = offsetCenter(size, config.window.size);
|
||||
|
||||
return Viewport(size, offset);
|
||||
}
|
||||
|
||||
/++
|
||||
Scaling/Fit Modes
|
||||
|
||||
|
|
@ -540,7 +607,6 @@ final class OpenGl3PixmapRenderer : PixmapRenderer {
|
|||
return WantsOpenGl(3, 0, false);
|
||||
}
|
||||
|
||||
// TODO: make this ctor?
|
||||
public void setup(PresenterObjectsContainer* pro) {
|
||||
_poc = pro;
|
||||
_poc.window.visibleForTheFirstTime = &this.visibleForTheFirstTime;
|
||||
|
|
@ -672,48 +738,9 @@ final class OpenGl3PixmapRenderer : PixmapRenderer {
|
|||
}
|
||||
|
||||
public void reconfigure() {
|
||||
Size viewport;
|
||||
const Viewport viewport = calculateViewport(_poc.config);
|
||||
glViewportPMP(viewport);
|
||||
|
||||
final switch (_poc.config.renderer.scaling) {
|
||||
|
||||
case Scaling.none:
|
||||
viewport = _poc.config.renderer.resolution;
|
||||
break;
|
||||
|
||||
case Scaling.stretch:
|
||||
viewport = _poc.config.window.size;
|
||||
break;
|
||||
|
||||
case Scaling.contain:
|
||||
const float scaleF = karContainScalingFactorF(_poc.config.renderer.resolution, _poc.config.window.size);
|
||||
viewport = Size(
|
||||
typeCast!int(scaleF * _poc.config.renderer.resolution.width),
|
||||
typeCast!int(scaleF * _poc.config.renderer.resolution.height),
|
||||
);
|
||||
break;
|
||||
|
||||
case Scaling.integer:
|
||||
const int scaleI = karContainScalingFactorInt(_poc.config.renderer.resolution, _poc.config.window.size);
|
||||
viewport = (_poc.config.renderer.resolution * scaleI);
|
||||
break;
|
||||
|
||||
case Scaling.intHybrid:
|
||||
if (karContainNeedsDownscaling(_poc.config.renderer.resolution, _poc.config.window.size)) {
|
||||
goto case Scaling.contain;
|
||||
}
|
||||
goto case Scaling.integer;
|
||||
|
||||
case Scaling.cover:
|
||||
const float fillF = karCoverScalingFactorF(_poc.config.renderer.resolution, _poc.config.window.size);
|
||||
viewport = Size(
|
||||
typeCast!int(fillF * _poc.config.renderer.resolution.width),
|
||||
typeCast!int(fillF * _poc.config.renderer.resolution.height),
|
||||
);
|
||||
break;
|
||||
}
|
||||
|
||||
const Point viewportPos = offsetCenter(viewport, _poc.config.window.size);
|
||||
glViewport(viewportPos.x, viewportPos.y, viewport.width, viewport.height);
|
||||
this.setupTexture();
|
||||
_clear = true;
|
||||
}
|
||||
|
|
@ -746,6 +773,158 @@ final class OpenGl3PixmapRenderer : PixmapRenderer {
|
|||
}
|
||||
}
|
||||
|
||||
/++
|
||||
Legacy OpenGL (1.x) renderer implementation
|
||||
|
||||
Uses what is often called the $(I Fixed Function Pipeline).
|
||||
+/
|
||||
final class OpenGl1PixmapRenderer : PixmapRenderer {
|
||||
|
||||
private {
|
||||
PresenterObjectsContainer* _poc;
|
||||
bool _clear = true;
|
||||
|
||||
GLuint _texture = 0;
|
||||
}
|
||||
|
||||
public @safe pure nothrow @nogc {
|
||||
///
|
||||
this() {
|
||||
}
|
||||
|
||||
WantsOpenGl wantsOpenGl() pure nothrow @nogc @safe {
|
||||
return WantsOpenGl(1, 1, true);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
public void setup(PresenterObjectsContainer* poc) {
|
||||
_poc = poc;
|
||||
_poc.window.visibleForTheFirstTime = &this.visibleForTheFirstTime;
|
||||
_poc.window.redrawOpenGlScene = &this.redrawOpenGlScene;
|
||||
}
|
||||
|
||||
private {
|
||||
|
||||
void visibleForTheFirstTime() {
|
||||
//_poc.window.setAsCurrentOpenGlContext();
|
||||
// ↑-- reconfigure() does this, too.
|
||||
// |-- Uncomment if this functions does something else in the future.
|
||||
|
||||
this.reconfigure();
|
||||
}
|
||||
|
||||
void setupTexture() {
|
||||
if (_texture == 0) {
|
||||
glGenTextures(1, &_texture);
|
||||
}
|
||||
|
||||
glBindTexture(GL_TEXTURE_2D, _texture);
|
||||
|
||||
final switch (_poc.config.renderer.filter) with (ScalingFilter) {
|
||||
case nearest:
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
||||
break;
|
||||
case linear:
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
||||
break;
|
||||
}
|
||||
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
||||
glTexImage2D(
|
||||
GL_TEXTURE_2D,
|
||||
0,
|
||||
GL_RGBA8,
|
||||
_poc.config.renderer.resolution.width,
|
||||
_poc.config.renderer.resolution.height,
|
||||
0,
|
||||
GL_RGBA, GL_UNSIGNED_BYTE,
|
||||
null
|
||||
);
|
||||
|
||||
glBindTexture(GL_TEXTURE_2D, 0);
|
||||
}
|
||||
|
||||
void setupMatrix() {
|
||||
glMatrixMode(GL_PROJECTION);
|
||||
glLoadIdentity();
|
||||
glOrtho(
|
||||
0, _poc.config.renderer.resolution.width,
|
||||
_poc.config.renderer.resolution.height, 0,
|
||||
-1, 1
|
||||
);
|
||||
//glMatrixMode(GL_MODELVIEW);
|
||||
}
|
||||
|
||||
void redrawOpenGlScene() {
|
||||
if (_clear) {
|
||||
glClearColor(
|
||||
_poc.config.renderer.background.r,
|
||||
_poc.config.renderer.background.g,
|
||||
_poc.config.renderer.background.b,
|
||||
_poc.config.renderer.background.a,
|
||||
);
|
||||
glClear(GL_COLOR_BUFFER_BIT);
|
||||
_clear = false;
|
||||
}
|
||||
|
||||
glBindTexture(GL_TEXTURE_2D, _texture);
|
||||
glEnable(GL_TEXTURE_2D);
|
||||
{
|
||||
glTexSubImage2D(
|
||||
GL_TEXTURE_2D,
|
||||
0,
|
||||
0, 0,
|
||||
_poc.config.renderer.resolution.width, _poc.config.renderer.resolution.height,
|
||||
GL_RGBA, GL_UNSIGNED_BYTE,
|
||||
typeCast!(void*)(_poc.framebuffer.data.ptr)
|
||||
);
|
||||
|
||||
glBegin(GL_QUADS);
|
||||
{
|
||||
glTexCoord2f(0, 0);
|
||||
glVertex2i(0, 0);
|
||||
|
||||
glTexCoord2f(0, 1);
|
||||
glVertex2i(0, _poc.config.renderer.resolution.height);
|
||||
|
||||
glTexCoord2f(1, 1);
|
||||
glVertex2i(_poc.config.renderer.resolution.width, _poc.config.renderer.resolution.height);
|
||||
|
||||
glTexCoord2f(1, 0);
|
||||
glVertex2i(_poc.config.renderer.resolution.width, 0);
|
||||
}
|
||||
glEnd();
|
||||
}
|
||||
glDisable(GL_TEXTURE_2D);
|
||||
glBindTexture(GL_TEXTURE_2D, 0);
|
||||
}
|
||||
}
|
||||
|
||||
public void reconfigure() {
|
||||
_poc.window.setAsCurrentOpenGlContext();
|
||||
|
||||
const Viewport viewport = calculateViewport(_poc.config);
|
||||
glViewportPMP(viewport);
|
||||
|
||||
this.setupTexture();
|
||||
this.setupMatrix();
|
||||
|
||||
_clear = true;
|
||||
}
|
||||
|
||||
public void redrawSchedule() {
|
||||
_poc.window.redrawOpenGlSceneSoon();
|
||||
}
|
||||
|
||||
public void redrawNow() {
|
||||
_poc.window.redrawOpenGlSceneNow();
|
||||
}
|
||||
}
|
||||
|
||||
///
|
||||
struct LoopCtrl {
|
||||
int interval; /// in milliseconds
|
||||
|
|
|
|||
Loading…
Reference in New Issue