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Switch: Interframe blending

This commit is contained in:
Vicki Pfau 2019-05-27 14:05:11 -07:00
parent 053b571bbd
commit 5b66a455b0
1 changed files with 57 additions and 8 deletions
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65
src/platform/switch/main.c
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@ -15,6 +15,7 @@
#include <switch.h>
#include <EGL/egl.h>
#include <GLES3/gl3.h>
#include <GLES3/gl31.h>
#define AUTO_INPUT 0x4E585031
#define SAMPLES 0x400
@ -67,11 +68,13 @@ static GLuint program;
static GLuint vbo;
static GLuint vao;
static GLuint pbo;
static GLuint copyFbo;
static GLuint texLocation;
static GLuint dimsLocation;
static GLuint insizeLocation;
static GLuint colorLocation;
static GLuint tex;
static GLuint oldTex;
static color_t* frameBuffer;
static struct mAVStream stream;
@ -95,6 +98,7 @@ static bool usePbo = true;
static u8 vmode;
static u32 vwidth;
static u32 vheight;
static bool interframeBlending = false;
static enum ScreenMode {
SM_PA,
@ -130,7 +134,8 @@ static bool initEgl() {
}
EGLint contextAttributeList[] = {
EGL_CONTEXT_CLIENT_VERSION, 3,
EGL_CONTEXT_MAJOR_VERSION, 3,
EGL_CONTEXT_MINOR_VERSION, 1,
EGL_NONE
};
s_context = eglCreateContext(s_display, config, EGL_NO_CONTEXT, contextAttributeList);
@ -283,6 +288,10 @@ static void _gameLoaded(struct mGUIRunner* runner) {
screenMode = mode;
}
int fakeBool;
mCoreConfigGetIntValue(&runner->config, "interframeBlending", &fakeBool);
interframeBlending = fakeBool;
rumble.up = 0;
rumble.down = 0;
}
@ -296,7 +305,7 @@ static void _gameUnloaded(struct mGUIRunner* runner) {
hidSendVibrationValues(vibrationDeviceHandles, values, 4);
}
static void _drawTex(struct mGUIRunner* runner, unsigned width, unsigned height, bool faded) {
static void _drawTex(struct mGUIRunner* runner, unsigned width, unsigned height, bool faded, bool blendTop) {
glViewport(0, 1080 - vheight, vwidth, vheight);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
@ -341,9 +350,9 @@ static void _drawTex(struct mGUIRunner* runner, unsigned width, unsigned height,
glUniform2f(insizeLocation, 1, 1);
}
if (!faded) {
glUniform4f(colorLocation, 1.0f, 1.0f, 1.0f, 1.0f);
glUniform4f(colorLocation, 1.0f, 1.0f, 1.0f, blendTop ? 0.5f : 1.0f);
} else {
glUniform4f(colorLocation, 0.8f, 0.8f, 0.8f, 0.8f);
glUniform4f(colorLocation, 0.8f, 0.8f, 0.8f, blendTop ? 0.4f : 0.8f);
}
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
@ -355,6 +364,20 @@ static void _drawTex(struct mGUIRunner* runner, unsigned width, unsigned height,
}
static void _prepareForFrame(struct mGUIRunner* runner) {
if (interframeBlending) {
glBindFramebuffer(GL_READ_FRAMEBUFFER, copyFbo);
glReadBuffer(GL_COLOR_ATTACHMENT0);
int width, height;
int format;
glBindTexture(GL_TEXTURE_2D, tex);
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &width);
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &height);
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_INTERNAL_FORMAT, &format);
glBindTexture(GL_TEXTURE_2D, oldTex);
glCopyTexImage2D(GL_TEXTURE_2D, 0, format, 0, 0, width, height, 0);
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
}
if (usePbo) {
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbo);
frameBuffer = glMapBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, 256 * 256 * 4, GL_MAP_WRITE_BIT);
@ -382,11 +405,19 @@ static void _drawFrame(struct mGUIRunner* runner, bool faded) {
glBindTexture(GL_TEXTURE_2D, tex);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 256, height, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
} else {
} else if (!interframeBlending) {
glBindTexture(GL_TEXTURE_2D, tex);
}
_drawTex(runner, width, height, faded);
if (interframeBlending) {
glBindTexture(GL_TEXTURE_2D, oldTex);
_drawTex(runner, width, height, faded, false);
glBindTexture(GL_TEXTURE_2D, tex);
_drawTex(runner, width, height, faded, true);
} else {
_drawTex(runner, width, height, faded, false);
}
HidVibrationValue values[4];
if (rumble.up) {
@ -412,7 +443,7 @@ static void _drawScreenshot(struct mGUIRunner* runner, const color_t* pixels, un
glBindTexture(GL_TEXTURE_2D, tex);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
_drawTex(runner, width, height, faded);
_drawTex(runner, width, height, faded, false);
}
static uint16_t _pollGameInput(struct mGUIRunner* runner) {
@ -556,20 +587,36 @@ int main(int argc, char* argv[]) {
glViewport(0, 1080 - vheight, vwidth, vheight);
glClearColor(0.f, 0.f, 0.f, 1.f);
glGenTextures(1, &tex);
glActiveTexture(GL_TEXTURE0);
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glGenTextures(1, &oldTex);
glBindTexture(GL_TEXTURE_2D, oldTex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glGenBuffers(1, &pbo);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbo);
glBufferData(GL_PIXEL_UNPACK_BUFFER, 256 * 256 * 4, NULL, GL_STREAM_DRAW);
frameBuffer = glMapBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, 256 * 256 * 4, GL_MAP_WRITE_BIT);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
glGenFramebuffers(1, &copyFbo);
glBindTexture(GL_TEXTURE_2D, tex);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 256, 256, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glBindTexture(GL_TEXTURE_2D, oldTex);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 256, 256, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glBindFramebuffer(GL_READ_FRAMEBUFFER, copyFbo);
glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex, 0);
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
program = glCreateProgram();
GLuint vertexShader = glCreateShader(GL_VERTEX_SHADER);
GLuint fragmentShader = glCreateShader(GL_FRAGMENT_SHADER);
@ -829,7 +876,9 @@ int main(int argc, char* argv[]) {
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
glDeleteBuffers(1, &pbo);
glDeleteFramebuffers(1, &copyFbo);
glDeleteTextures(1, &tex);
glDeleteTextures(1, &oldTex);
glDeleteBuffers(1, &vbo);
glDeleteProgram(program);
glDeleteVertexArrays(1, &vao);